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1. Adsorption of Cu2+, Pb2+, and Cd2+ onto oiltea shell from water

Author:
Liu, Jiayang; Hu, Changwei; Huang, Qingguo
Source:
Bioresource technology 2019 v.271 pp. 487-491
ISSN:
0960-8524
Subject:
temperature,   etc   ; adsorbents; adsorption; aqueous solutions; biosorbents; cadmium; copper; endothermy; heavy metals; lead; metal ions; methylene blue; models; pH; pollutants; sorption isotherms; wastes; wastewater treatment;     Show all 18 Subjects
Abstract:
... Agro-processing waste oiltea shell (OTS) has been previously proven effective in removing dye from water by adsorption. This study further evaluated its capability to adsorb heavy metals in aqueous solution. Adsorbent dosage, pH, ion concentration, temperature, and contact time were investigated in batch experiments. Pseudo-second order kinetic better described the adsorption process for the three ...
DOI:
10.1016/j.biortech.2018.09.040

2. Effect of thermal regeneration of diatomite adsorbent on its efficacy for removal of dye from water

Author:
Aguedal, H.; Iddou, A.; Aziz, A.; Shishkin, A.; Ločs, J.; Juhna, T.
Source:
International journal of environmental science and technology 2019 v.16 no.1 pp. 113-124
ISSN:
1735-1472
Subject:
temperature,   etc   ; X-ray diffraction; adsorbents; adsorption; diatomaceous earth; dyes; energy-dispersive X-ray analysis; fabrics; heat treatment; kinetics; models; pH; particle size; recycling; sorption isotherms; wastewater; water treatment;     Show all 17 Subjects
Abstract:
... Reduction in adsorption capacities of adsorbents is limiting of its wider application for water treatment. In this study, we developed a new approach for recycling diatomite to be used adsorbent. The laser scattering particle size analyzer, X-ray diffraction, scanning electron microscopy/energy-dispersive X-ray and Brunauer–Emmett–Teller analysis were used to evaluate the structural characteristic ...
DOI:
10.1007/s13762-018-1647-5

3. Efficient removal of ethidium bromide from aqueous solution by using DNA-loaded Fe3O4 nanoparticles

Author:
Ge, Zhiqiang; Sun, Tingting; Xing, Jinfeng; Fan, Xuejiao
Source:
Environmental science and pollution research international 2019 v.26 no.3 pp. 2387-2396
ISSN:
0944-1344
Subject:
temperature,   etc   ; DNA; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; batch systems; carcinogens; chemical bonding; crystal structure; dyes; ethidium; heat production; iron oxides; magnetism; models; mutagens; nanoparticles; pH; reaction kinetics; scanning electron microscopy; sorption isotherms; transmission electron microscopy; zeta potential;     Show all 25 Subjects
Abstract:
... Ethidium bromide (EtBr) is widely used as DNA-staining dyes for the detection of nucleic acids in laboratories and known to be powerful mutagens and carcinogens. In the present paper, the removal of EtBr from aqueous solutions in a batch system using DNA-loaded Fe₃O₄ nanoparticles as a simple and efficient method was investigated. DNA was covalently loaded on the surface of Fe₃O₄ magnetic nanopart ...
DOI:
10.1007/s11356-018-3747-7

4. Fabrication of phosphonium bamboo cellulose by triphenylphosphine: preparation, characterization, and adsorption of Acid Black 24

Author:
Xiong, Wei; Hu, Dongying
Source:
Environmental science and pollution research international 2019 v.26 no.2 pp. 1880-1891
ISSN:
0944-1344
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; activation energy; adsorbents; adsorption; aqueous solutions; bamboos; biomass; cellulose; chemical structure; dyes; endothermy; models; pH; purification methods; scanning electron microscopy; sorption isotherms;     Show all 17 Subjects
Abstract:
... Cellulose from bamboo shavings (BC) separated and modified by grafting triphenylphosphine, which was used as an adsorbent for the removal of Acid Black 24 from aqueous solution. The quaternary phosphonium-based bamboo cellulose (PBC) was characterized by FTIR and SEM measurements. The FTIR studies showed that the quaternary phosphonium group was successfully grafted onto the BC molecular structure ...
DOI:
10.1007/s11356-018-3711-6

5. Novel Fe3O4@lignosulfonate/phenolic core-shell microspheres for highly efficient removal of cationic dyes from aqueous solution

Author:
Wang, Guanhua; Liu, Qingjun; Chang, Minmin; Jang, Jinmyung; Sui, Wenjie; Si, Chuanling; Ni, Yonghao
Source:
Industrial crops and products 2019 v.127 pp. 110-118
ISSN:
0926-6690
Subject:
temperature,   etc   ; adsorbents; adsorption; aqueous solutions; biomass; crosslinking; emulsions; endothermy; ethanol; iron oxides; lignin; lignosulfonates; methylene blue; microparticles; models; pH; phenolic resins; polymerization; solvents; sorption isotherms; wastewater; wastewater treatment;     Show all 22 Subjects
Abstract:
... The application of green adsorbents from renewable biomass for dye wastewater treatment has received wide attention in recent years. In this work, novel lignin-based Fe3O4@lignosulfonate/phenolic core-shell microspheres were fabricated for the first time to remove cationic dyes from aqueous solutions. The emulsion polymerization using p-toluenesulfonic acid as a curing agent was employed to synthe ...
DOI:
10.1016/j.indcrop.2018.10.056

6. Removal of Pb(II) from aqueous solutions by adsorption on magnetic bentonite

Author:
Zou, Chenglong; Jiang, Wei; Liang, Jiyan; Sun, Xiaohang; Guan, Yinyan
Source:
Environmental science and pollution research international 2019 v.26 no.2 pp. 1315-1322
ISSN:
0944-1344
Subject:
temperature,   etc   ; adsorbents; adsorption; aqueous solutions; bentonite; clay; endothermy; heavy metals; ions; lead; magnetism; models; pH; pollutants; remediation; sorption isotherms; thermodynamics; wastewater;     Show all 18 Subjects
Abstract:
... Bentonite is a porous clay material that shows good performance for adsorbing heavy metals and other pollutants for wastewater remediation. In our previous study, magnetic bentonite (M-B) was prepared to solve the separation problem and improve the operability. In this study, we investigated the influence of various parameters on the Pb(II) adsorption of M-B, and it showed effective performance. A ...
DOI:
10.1007/s11356-018-3652-0

7. Removing mercury from aqueous solution using sulfurized biochar and associated mechanisms

Author:
Park, Jong-Hwan; Wang, Jim J.; Zhou, Baoyue; Mikhael, Joseph E.R.; DeLaune, Ronald D.
Source:
Environmental pollution 2019 v.244 pp. 627-635
ISSN:
0269-7491
Subject:
temperature,   etc   ; X-ray photoelectron spectroscopy; absorbents; adsorption; aqueous solutions; biochar; carbon; energy-dispersive X-ray analysis; heavy metals; mercury; models; moieties; oxygen; pH; pyrolysis; salt concentration; scanning electron microscopy; sorption isotherms; sulfur; wastewater; wood; wood chips;     Show all 22 Subjects
Abstract:
... Biochar has been used to remove heavy metals from aqueous solutions. In this study, a sulfurized wood biochar (SWB) by direct impregnation with elemental sulfur was produced and evaluated along with pristine wood biochar (WB) for adsorption characteristics and mechanism of mercury. Mercury adsorption by WB and SWB was well described by Langmuir model and pseudo second order model and the maximum a ...
DOI:
10.1016/j.envpol.2018.10.069

8. The applicability of evaluable wastes for the adsorption of Reactive Black 5

Author:
Çelebi, H.
Source:
International journal of environmental science and technology 2019 v.16 no.1 pp. 135-146
ISSN:
1735-1472
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; Gibbs free energy; adsorbents; adsorption; aqueous solutions; dyes; egg shell; energy-dispersive X-ray analysis; enthalpy; entropy; heat production; hulls; models; pH; pumpkins; scanning electron microscopy; sorption isotherms; wastes;     Show all 19 Subjects
Abstract:
... In this study, it is proposed that pumpkin seed hulls and eggshells that are household wastes are low-cost materials to remove the Reactive Black 5 from water media. Through a number of experiments, the influences of the contact time, adsorption quantity, temperature, and pH of the solution were studied. Characterization of pumpkin seed hulls and eggshells was done by using Fourier transform infra ...
DOI:
10.1007/s13762-018-1969-3

9. Application of experimental design methodology to optimize antibiotics removal by walnut shell based activated carbon

Author:
Teixeira, S.; Delerue-Matos, C.; Santos, L.
Source:
The Science of the total environment 2019 v.646 pp. 168-176
ISSN:
0048-9697
Subject:
temperature,   etc   ; activated carbon; adsorption; antibiotics; equations; experimental design; metronidazole; models; pH; response surface methodology; sorption isotherms; sulfamethoxazole; walnut hulls;     Show all 13 Subjects
Abstract:
... Three-level Box-Behnken experimental design with three factors (pH, temperature and antibiotic initial concentration) combined with response surface methodology (RSM) was applied to study the removal of Metronidazole and Sulfamethoxazole by walnut shell based activated carbon. This methodology enabled to identify the effects of the different factors studied and their interactions in the response o ...
DOI:
10.1016/j.scitotenv.2018.07.204

10. Core-Shell Bimagnetic Nanoadsorbents for Hexavalent Chromium Removal from Aqueous Solutions

Author:
Campos, Alex Fabiano Cortez; de Oliveira, Helena Augusta Lisboa; da Silva, Fabiana Narciso; da Silva, Franciscarlos Gomes; Coppola, Priscilla; Aquino, Renata; Mezzi, Alessio; Depeyrot, Jerome
Source:
Journal of hazardous materials 2019 v.362 pp. 82-91
ISSN:
0304-3894
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; aqueous solutions; chromium; endothermy; ions; magnetism; models; nanoparticles; pH; pollutants; separation; sorbents; sorption isotherms; surface area; transmission electron microscopy; water pollution;     Show all 20 Subjects
Abstract:
... Novel nanoadsorbents based on core-shell bimagnetic nanoparticles (CoFe2O4@ɣ-Fe2O3) with two different mean sizes were elaborated, characterized and applied as potential sorbents for Cr(VI) removal from aqueous solutions through magnetically assisted chemical separation. The nanoadsorbents were characterized by XRD, TEM, FTIR, XPS, potentiometric-conductometric titrations, BET and vibrating sample ...
DOI:
10.1016/j.jhazmat.2018.09.008

11. Enhancing adsorption capacity of Egyptian diatomaceous earth by thermo-chemical purification: Methylene blue uptake

Author:
Mohamed, Essam A.; Selim, Ali Q.; Zayed, Ahmed M.; Komarneni, Sridhar; Mobarak, Mohamed; Seliem, Moaaz K.
Source:
Journal of colloid and interface science 2019 v.534 pp. 408-419
ISSN:
0021-9797
Subject:
temperature,   etc   ; Bacillariophyceae; Fourier transform infrared spectroscopy; X-ray diffraction; X-ray fluorescence spectroscopy; active sites; adsorbents; adsorption; diatomaceous earth; endothermy; light microscopy; methylene blue; models; pH; scanning electron microscopy; silica; sorption isotherms; thermodynamics;     Show all 18 Subjects
Abstract:
... In the current study, calcination and thermo-chemical methods were applied in treatment of the processed diatomite fraction (<45 μm), which containing nearly 82.6 wt.% of the raw Egyptian diatomaceous earth. The untreated and modified diatomite fractions were characterized by optical microscopy (OM), X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier ...
DOI:
10.1016/j.jcis.2018.09.024

12. Facile synthesis of graphene oxide–silver nanocomposite for decontamination of water from multiple pollutants by adsorption, catalysis and antibacterial activity

Author:
Naeem, Hina; Ajmal, Muhammad; Qureshi, Raheela Beenish; Muntha, Sedra Tul; Farooq, Muhammad; Siddiq, Muhammad
Source:
Journal of environmental management 2019 v.230 pp. 199-211
ISSN:
0301-4797
Subject:
temperature,   etc   ; Escherichia coli; Fourier transform infrared spectroscopy; Gram-negative bacteria; Gram-positive bacteria; Staphylococcus aureus; X-radiation; X-ray diffraction; adsorbents; adsorption; antibacterial properties; antibiotics; catalysts; catalytic activity; chemical reduction; decontamination; energy-dispersive X-ray analysis; graphene; ions; kinetics; malachite green; models; nanocomposites; nanosilver; nitroanilines; pH; pathogens; pollutants; scanning electron microscopy; silver; sorption isotherms; thermogravimetry; toxicity; transmission electron microscopy; wastewater;     Show all 35 Subjects
Abstract:
... Here in, we presented a facile one-step method for the synthesis of Graphene oxide–silver (GO–Ag) nanocomposite and its applications as a sorbent for the elimination of some toxic pollutants from aqueous medium, as an efficient catalyst in the individual as well as simultaneous reduction reactions of multiple compounds, and as an antibacterial agent for the destruction of some harmful microorganis ...
DOI:
10.1016/j.jenvman.2018.09.061

13. Corncob-supported aluminium-manganese binary oxide composite enhanced removal of cadmium ions

Author:
Zheng, Liuchun; Peng, Dan; Meng, Peipei
Source:
Colloids and surfaces 2019 v.561 pp. 109-119
ISSN:
0927-7757
Subject:
temperature,   etc   ; adsorbents; adsorption; analytical methods; cadmium; colloids; coordination compounds; corn cobs; electrostatic interactions; endothermy; equations; ions; manganese oxides; models; moieties; pH; sorption isotherms; thermodynamics;     Show all 18 Subjects
Abstract:
... Aluminium-manganese binary oxide was coated successfully on raw corncob (RCC) to increase the oxygenic functional groups, and then produced an adsorbent (named as AMOCC). Accordingly, conventional factors, such as dosages, pH values, contact time and temperature, were evaluated for its absorptive properties, while it was characterized by several analytical methods. Moreover, adsorption isotherms, ...
DOI:
10.1016/j.colsurfa.2018.10.075

14. Fabrication of highly porous adsorbent derived from bio-based polymer metal complex for the remediation of water pollutants

Author:
Ahamad, Tansir; Ruksana,; Naushad, Mu.; Al-Maswari, Basheer M.; Alshehri, Saad M.
Source:
Journal of cleaner production 2019 v.208 pp. 1317-1326
ISSN:
0959-6526
Subject:
temperature,   etc   ; adsorbents; adsorption; analytical methods; cadmium; carbon; cobalt; electron microscopy; ferrimagnetic materials; methylene blue; models; nanocomposites; nanoparticles; nitrogen; pH; pollutants; polymers; remediation; sorption isotherms; surface area; zeta potential;     Show all 21 Subjects
Abstract:
... In this study, the adsorption of methylene-blue (MB) and Cd(II) onto low cost material and easy separation towards cleaner environment was investigated. The cobalt ferrite embedded nitrogen doped carbon nanocomposite (CF@NC) was fabricated using albumen protein bi-metals complexes. The prepared nanocomposite was characterized using several analytical techniques. The electron microscopy results rev ...
DOI:
10.1016/j.jclepro.2018.10.174

15. Convenient pH-responsive removal of Acid Black 1 by green l-histidine/iron oxide magnetic nanoadsorbent from water: performance and mechanistic studies

Author:
Qurrat-ul-Ain,; Khatoon, Jaweria; Shah, Muhammad Raza; Malik, Muhammad Imran; Khan, Iffat Abdul Tawab; Khurshid, Sumaira; Naz, Raheela
Source:
RSC advances 2019 v.9 no.6 pp. 2978-2996
ISSN:
2046-2069
Subject:
temperature,   etc   ; activation energy; adsorbents; adsorption; aqueous solutions; atomic force microscopy; azo dyes; coatings; compliance; energy; heat production; histidine; ionic strength; iron oxides; magnetism; models; nanoparticles; pH; sorption isotherms; spectroscopy; thermogravimetry; wastewater;     Show all 22 Subjects
Abstract:
... This study was aimed at developing green histidine-modified Fe₃O₄ nanoparticles (His-MNPs) for the adsorptive removal of Acid Black 1 (AB1) from aqueous solution. The His-MNPs were characterized by atomic force microscopy, scanning electron microscopy-energy dispersive X-ray spectrometry, infra-red spectra and thermogravimetry. These MNPs were spherical (average diameter 11–28 nm) with polydispers ...
DOI:
10.1039/c8ra09279f

16. Biosorption of lead by cotton shells powder: Characterization and equilibrium modeling study

Author:
Akram, Muhammad; Khan, Binish; Imran, Muhammad; Ahmad, Iftikhar; Ajaz, Humayun; Tahir, Muhammad; Rabbani, Faiz; Kaleem, Imdad; Nadeem Akhtar, Muhammad; Ahmad, Naveed; Samad Shah, Noor
Source:
International journal of phytoremediation 2019 v.21 no.2 pp. 138-144
ISSN:
1549-7879
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; Gossypium hirsutum; adsorbents; biomass; biosorption; cotton; heavy metals; humans; ion exchange; lead; models; moieties; pH; phytoremediation; porosity; porous media; risk; scanning electron microscopy; sorption isotherms; surface area; toxicity; water pollution;     Show all 23 Subjects
Abstract:
... Lead (Pb) is a toxic heavy metal causing serious health risks to humans and animals. In the present study, cotton (Gossypium hirsutum L.) shells powder was used as adsorbent for the treatment of synthetic Pb-contaminated water. The batch scale biosorption capacity of cotton shells powder was evaluated to study the effects of Pb concentrations, adsorbent doses and contact time at constant pH (6) an ...
DOI:
10.1080/15226514.2018.1488810

17. Adsorption of micronutrient metal ion onto struvite to prepare slow release multielement fertilizer: Copper(II) doped-struvite

Author:
Arslanoglu, Hasan
Source:
Chemosphere 2019 v.217 pp. 393-401
ISSN:
0045-6535
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; activation energy; adsorbents; adsorption; aqueous solutions; copper; copper hydroxide; electrostatic interactions; endothermy; energy; energy-dispersive X-ray analysis; fertilizers; kinetics; magnesium; magnesium ammonium phosphate; models; nitrogen; pH; particle size; phosphorus; scanning electron microscopy; solubility; sorption isotherms; surface area;     Show all 26 Subjects
Abstract:
... In this study, struvite (MgNH4PO4.6H2O) sample was prepared by precipitation. Synthetic struvite was used as an adsorbent to remove Cu(II) from aqueous solution. Struvite was characterized by X-ray diffraction, FTIR, particle size analysis, SEM-EDX, surface area and true density. Solubility of struvite in water and acid solutions was investigated. Batch adsorption experiments were carried out by c ...
DOI:
10.1016/j.chemosphere.2018.10.207

18. Adsorptive removal of anionic dye using calcined oyster shells: isotherms, kinetics, and thermodynamics

Author:
Inthapanya, Xayanto; Wu, Shaohua; Han, Zhenfeng; Zeng, Guangming; Wu, Mengjie; Yang, Chunping
Source:
Environmental science and pollution research international 2019 v.26 no.6 pp. 5944-5954
ISSN:
0944-1344
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; calcium carbonate; dyes; endothermy; models; oyster shells; pH; porosity; scanning electron microscopy; sorption isotherms; surface area; thermodynamics;     Show all 16 Subjects
Abstract:
... Oyster shells are a type of biogenic materials with excellent characteristics in surface area, porosity, sorption capacity, and high concentration of CaCO₃ (up to 90 wt%), and can be easily converted into a calcium-based alkali adsorbent. In this research, oyster shells calcined at 900 °C were applied as an adsorbent for acid green 25 (AG25) removal from aqueous solutions. The adsorption performan ...
DOI:
10.1007/s11356-018-3980-0

19. Daptomycin adsorption on magnetic ultra-fine wood-based biochars from water: Kinetics, isotherms, and mechanism studies

Author:
Ai, Tian; Jiang, Xiaojun; Liu, Qingyu; Lv, Linlin; Wu, Hang
Source:
Bioresource technology 2019 v.273 pp. 8-15
ISSN:
0960-8524
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; biochar; daptomycin; differential thermal analysis; endothermy; magnetism; milling; models; pH; particle size; scanning electron microscopy; sorption isotherms; thermodynamics; thermogravimetry;     Show all 17 Subjects
Abstract:
... The adsorption of a new antibiotic, daptomycin, on two magnetic ultra-fine wood-based biochars were investigated in detail using batch experiments. The adsorbent materials was prepared by ball milling method, which was characterized by laser particle size analyzer, elemental analyzer, ICP-OES, VSM, BET, TG-DTG, FTIR and SEM. Furthermore, the effects of most important variables in the adsorption pr ...
DOI:
10.1016/j.biortech.2018.10.039

20. Enhancing adsorption of malachite green dye using base-modified Artocarpus odoratissimus leaves as adsorbents

Author:
Zaidi, Nur Afiqah Hazirah Mohamad; Lim, Linda Biaw Leng; Usman, Anwar
Source:
Environmental technology & innovation 2019 v.13 pp. 211-223
ISSN:
2352-1864
Subject:
temperature,   etc   ; Artocarpus; adsorbents; adsorption; environmental technology; ionic strength; leaves; malachite green; models; pH; sodium hydroxide; sorption isotherms;     Show all 12 Subjects
Abstract:
... As an extension to successful adsorption of malachite green dye onto Artocarpus odoratissimus (Tarap) leaves, the surface of the leaves was modified by using a strong base, namely sodium hydroxide (NaOH). The isotherm was best fitted to the Redlich–Peterson model. Based on monolayer adsorption using Langmuir model, the qmax value of Tarap leaves enhanced from 254.9 to 422.0 mg/g upon the modificat ...
DOI:
10.1016/j.eti.2018.12.002

21. Hematite–titaniferous sand as a new low-cost adsorbent for orthophosphates removal: Adsorption, mechanism and Process Capability study

Author:
Benafqir, Mohamed; Anfar, Zakaria; Abbaz, Mohamed; El Haouti, Rachid; Lhanafi, Saaida; Azougarh, Youssef; Ait El Fakir, Abdellah; Ez-zahery, Mohamed; El Alem, Noureddine
Source:
Environmental technology & innovation 2019 v.13 pp. 153-165
ISSN:
2352-1864
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-radiation; X-ray diffraction; X-ray fluorescence spectroscopy; adsorbents; adsorption; energy-dispersive X-ray analysis; environmental technology; kinetics; models; orthophosphates; pH; sand; scanning electron microscopy; sorption isotherms; thermodynamics;     Show all 17 Subjects
Abstract:
... In this work, a new natural performing material Hematite–titaniferous sand (HTS) is used to study the adsorption of Orthophosphates, and to obtain the optimum conditions for maximum removal. The adsorbent used was characterized and inspected employing (XRD) X-ray diffraction, (XRF) X-ray fluorescence, (SEM) scanning electron microscopy coupled with (EDS) energy dispersive X-ray spectroscopy and (F ...
DOI:
10.1016/j.eti.2018.10.009

22. Highly adsorptive chitosan/saponin-bentonite composite film for removal of methyl orange and Cr(VI)

Author:
Laysandra, Livy; Ondang, Immanuel Joseph; Ju, Yi-Hsu; Ariandini, Benedikta Hervina; Mariska, Agatha; Soetaredjo, Felycia Edi; Putro, Jindrayani Nyoo; Santoso, Shella Permatasari; Darsono, Farida Lanawati; Ismadji, Suryadi
Source:
Environmental science and pollution research international 2019 v.26 no.5 pp. 5020-5037
ISSN:
0944-1344
Subject:
temperature,   etc   ; adsorption; bentonite; chitosan; chromium; composite films; composite materials; equations; methyl orange; models; pH; saponins; sorption isotherms; thermodynamics;     Show all 14 Subjects
Abstract:
... Robust and simple composite films for the removal of methyl orange (MO) and Cr(VI) have been prepared by combining chitosan, saponin, and bentonite at a specific ratio. There are several composite films (chitosan-saponin-bentonite (CSB)) prepared; among them, the composite films CSB₂:₃ and CSB₁:₁ have the highest removal efficiency toward MO and Cr(VI) where the maximum removal is 70.4% (pH 4.80) ...
DOI:
10.1007/s11356-018-4035-2

23. Potentiality of white-rot fungi in biosorption of nickel and cadmium: Modeling optimization and kinetics study

Author:
Noormohamadi, Hamid Reza; Fat'hi, Mohammad Reza; Ghaedi, Mehrorang; Ghezelbash, Gholam Reza
Source:
Chemosphere 2019 v.216 pp. 124-130
ISSN:
0045-6535
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; Phanerochaete chrysosporium; biosorbents; biosorption; cadmium; energy-dispersive X-ray analysis; ions; kinetics; mixing; models; moieties; nickel; pH; response surface methodology; scanning electron microscopy; sorption isotherms; white-rot fungi;     Show all 18 Subjects
Abstract:
... The present study aimed to analyze simultaneous biosorption of Cd+2 and Ni+2 by living Phanerochaete chrysosporium as low-cost and eco-friendly biosorbent following optimization by applying a central composite design. The effect of operating parameters such as solution pH (4.0–8.0), temperature (20–40 °C), contact time (3–15 h), initial Cd+2 and Ni+2 concentrations (15–35, 5–25 mg L−1, respectivel ...
DOI:
10.1016/j.chemosphere.2018.10.113

24. Synthesis of novel surface-modified hematite nanoparticles for the removal of cobalt-60 radiocations from aqueous solution

Author:
Hashemzadeh, M.; Nilchi, A.; Hassani, A. H.; Saberi, R.
Source:
International journal of environmental science and technology 2019 v.16 no.2 pp. 775-792
ISSN:
1735-1472
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; ferric chloride; hematite; hot water treatment; iron; models; nanoparticles; nanorods; oleic acid; pH; raw materials; scanning electron microscopes; sorption isotherms; surface area; transmission electron microscopy;     Show all 20 Subjects
Abstract:
... In this study, novel surface-modified hematite nanoparticles (α-Fe₂O₃ NPₛ) were prepared at 250 °C using iron(III) chloride hexahydrate (FeCl₃·6H₂O) and oleic acid (C₁₈H₃₄O₂) as raw materials for the removal of cobalt-60 radiocations from aqueous solutions by hydrothermal method. α-Fe₂O₃ NPₛ were characterized by X-ray diffraction, Fourier transform infrared (FT-IR), scanning electron microscope, ...
DOI:
10.1007/s13762-018-1656-4

25. Synthesis of novel waste batteries-sawdust-based adsorbent via a two-stage activation method for Pb2+ removal

Author:
Niu, Zhirui; Zhang, Shaokang; Ma, Mengfan; Wang, Zhenyang; Zhao, Hanyang; Wang, Yingying
Source:
Environmental science and pollution research international 2019 v.26 no.5 pp. 4730-4745
ISSN:
0944-1344
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; batteries; biomass; cation exchange capacity; electrodes; endothermy; iodine; lead; models; pH; raw materials; sawdust; scanning electron microscopy; sorption isotherms; thermodynamics; waste treatment; wastes;     Show all 21 Subjects
Abstract:
... The novel waste alkaline battery-sawdust-based adsorbents (WABAs) are prepared by a two-stage activation method with the negative electrode materials as activator and different doping ratio of the positive electrode materials and pine sawdust as raw materials. The characteristics of the WABAs are analyzed by SEM, XRD, FT-IR, and specific surface determination (SBET). The Pb²⁺ adsorption properties ...
DOI:
10.1007/s11356-018-3883-0

26. Ultrasonic assisted graphene oxide nanosheet for the removal of phenol containing solution

Author:
Mukherjee, Maloshree; Goswami, Sudipta; Banerjee, Priya; Sengupta, Shubhalakshmi; Das, Papita; Banerjee, Prasanta K.; Datta, Siddhartha
Source:
Environmental technology & innovation 2019 v.13 pp. 398-407
ISSN:
2352-1864
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; environmental technology; graphene oxide; irradiation; models; nanosheets; pH; phenol; scanning electron microscopy; sorption isotherms; ultrasonics;     Show all 15 Subjects
Abstract:
... The present study investigated the efficiency of graphene oxide nanosheet as adsorbent for the treatment of phenol containing solution in presence of ultrasonic irradiation. Graphene oxide was synthesized using modified Hummer’s method and was further subjected to ultrasonic irradiation. The characterization of graphene oxide was performed using scanning electron microscopy (SEM) and Fourier trans ...
DOI:
10.1016/j.eti.2016.11.006

27. Adsorption of Hg (II) ions from aqueous solution by diethylenetriaminepentaacetic acid-modified cellulose

Author:
Li, Bo; Li, Ming; Zhang, Jinyao; Pan, Yuanfeng; Huang, Zhihong; Xiao, Huining
Source:
International journal of biological macromolecules 2019 v.122 pp. 149-156
ISSN:
0141-8130
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; binding properties; cellulose; cross-linking reagents; ethylenediamines; heavy metals; kinetics; ligands; mercury; metal ions; models; pH; scanning electron microscopy; sorption isotherms;     Show all 19 Subjects
Abstract:
... The diethylenetriaminepentaacetic acid (DTPA)-modified cellulose adsorbent was prepared using N‑[3‑(trimethoxysilyl)propyl]ethylenediamine as a crosslinking reagent and used for the removal of Hg (II) ions from aqueous solution. The resulting adsorbents were comprehensively characterized with FTIR, XRD and SEM. The results showed that DTPA successfully functionalized cellulose, and coordinating DT ...
DOI:
10.1016/j.ijbiomac.2018.10.162

28. Karaya gum-graft-poly(2-(dimethylamino)ethyl methacrylate) gel: An efficient adsorbent for removal of ionic dyes from water

Author:
Bidarakatte Krishnappa, Preetha; Badalamoole, Vishalakshi
Source:
International journal of biological macromolecules 2019 v.122 pp. 997-1007
ISSN:
0141-8130
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; composite polymers; copolymerization; hydrogels; indigo carmine; kinetics; methylene blue; microwave radiation; models; pH; polysaccharides; scanning electron microscopy; sorption isotherms; thermodynamics; thermogravimetry;     Show all 19 Subjects
Abstract:
... In the present study, a novel hydrogel based on the polysaccharide, ‘Karaya gum’ has been synthesised by graft copolymerization and evaluated as an adsorbent for the removal of ionic dyes from aqueous solution. The hydrogel was made by simultaneous grafting and cross linking of Karaya gum using 2-(dimethylamino)ethyl methacrylate (DMAEMA) and N,N′-methylene-bis-acrylamide via microwave irradiation ...
DOI:
10.1016/j.ijbiomac.2018.09.038

29. Preparation of NiAl-LDH/Polypyrrole composites for uranium(VI) extraction from simulated seawater

Author:
Zhong, Chongna; Su, Shouzheng; Xu, Li; Liu, Qi; Zhang, Hongsen; Yang, Piaoping; Zhang, Milin; Bai, Xuefeng; Wang, Jun
Source:
Colloids and surfaces 2019 v.562 pp. 329-335
ISSN:
0927-7757
Subject:
temperature,   etc   ; adsorption; colloids; endothermy; models; pH; seawater; sorption isotherms; uranium;     Show all 9 Subjects
Abstract:
... In this work, NiAl-LDH/Polypyrrole (NiAl-LDH/PPy) was synthesized by a simple method for the adsorption of uranium(VI) (U(VI)) from simulated seawater. The parameters studied contained pH, contact time, initial concentration and temperatures. The kinetic parameters showed that it could be well consistent with pseudo-second-order model. Langmuir and Freundlich isotherm models were used to describe ...
DOI:
10.1016/j.colsurfa.2018.11.029

30. Alginate/PAMAM dendrimer – Halloysite beads for removal of cationic and anionic dyes

Author:
Kurczewska, Joanna; Cegłowski, Michał; Schroeder, Grzegorz
Source:
International journal of biological macromolecules 2019 v.123 pp. 398-408
ISSN:
0141-8130
Subject:
temperature,   etc   ; adsorbents; adsorption; alginates; dendrimers; dyes; encapsulation; endothermy; halloysite; mass transfer; models; nanotubes; pH; sorption isotherms; thermodynamics;     Show all 15 Subjects
Abstract:
... The alginate beads have been widely used for dye removal. However, most of the systems described in literature refer to one type of dyes and the adsorbents of cationic ones are dominant. In this study, the composite alginate beads were prepared and characterized. The system was obtained by encapsulation of polyamidoamine – functionalized halloysite nanotubes in alginate (Alg/Hal_PAMAM beads). The ...
DOI:
10.1016/j.ijbiomac.2018.11.119

31. A novel thiosemicarbazide modified chitosan (TSFCS) for efficiency removal of Pb (II) and methyl red from aqueous solution

Author:
Mozaffari, Maede; Emami, Mohammad Reza Sarmasti; Binaeian, Ehsan
Source:
International journal of biological macromolecules 2019 v.123 pp. 457-467
ISSN:
0141-8130
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; chitosan; endothermy; lead; models; pH; scanning electron microscopy; sorption isotherms; thermodynamics; thermogravimetry;     Show all 14 Subjects
Abstract:
... Thiosemicarbazide modified chitosan, TSFCS, was prepared and characterized by FTIR, SEM and TGA techniques and its application as a novel adsorbent for the removal of Pb(II) and methyl red (MR) was investigated. The effect of some adsorption parameters such as pH, TSFCS dosage and initial concentration of solutions were evaluated. The maximum removal percentage for MR and Pb(II) was found to be ab ...
DOI:
10.1016/j.ijbiomac.2018.11.106

32. Easy fabrication of aromatic-rich cellulose-urethane polymer for preferential adsorption of acetophenone over 1-phenylethanol

Author:
Li, Guoyu; Chai, Kungang; Zhou, Liqin; Tong, Zhangfa; Ji, Hongbing
Source:
Carbohydrate polymers 2019 v.206 pp. 716-725
ISSN:
0144-8617
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; acetophenones; adsorbents; adsorption; agitation; carbon; cellulose; crosslinking; equations; hydrogen bonding; ionic strength; models; nuclear magnetic resonance spectroscopy; pH; packaging materials; polymers; scanning electron microscopy; solutes; sorption isotherms; stable isotopes; thermogravimetry;     Show all 24 Subjects
Abstract:
... A novel aromatic-rich cellulose-urethane polymer (ACUP) was easily fabricated by crosslinking cellulose with 4,4’,4’’-triphenylmethane triisocyanate for preferential adsorption of acetophenone (AP) over 1-phenyethanol (PE). The successful synthesis of ACUP was confirmed by the instrumental analyses, e.g., FTIR, TG, XPS, FE-SEM, 13C CP/MAS NMR and XRD. For single-solute adsorption of AP or PE onto ...
DOI:
10.1016/j.carbpol.2018.11.057

33. Efficient adsorption of methylene blue and lead ions in aqueous solutions by 5-sulfosalicylic acid modified lignin

Author:
Jin, Yanqiao; Zeng, Chaomin; Lü, Qiu-Feng; Yu, Yan
Source:
International journal of biological macromolecules 2019 v.123 pp. 50-58
ISSN:
0141-8130
Subject:
temperature,   etc   ; adsorbents; adsorption; aqueous solutions; biomass; heavy metals; ions; lead; lignin; methylene blue; models; pH; sorption isotherms; wastewater;     Show all 14 Subjects
Abstract:
... As a kind of biomass that exists widely in plants, lignin shows much diversity as a functional material. In order to improve the adsorption ability, lignin was chemically modified by 5-sulfosalicylic acid and then used to adsorb methylene blue (MB) and Pb2+ from aqueous solutions. The results showed that the 5-sulfosalicylic acid modified lignin exhibited a high adsorption ability for dyes or heav ...
DOI:
10.1016/j.ijbiomac.2018.10.213

34. Factors affecting the sorption of halogenated phenols onto polymer/biomass-derived biochar: Effects of pH, hydrophobicity, and deprotonation

Author:
Oh, Seok-Young; Seo, Yong-Deuk
Source:
Journal of environmental management 2019 v.232 pp. 145-152
ISSN:
0301-4797
Subject:
temperature,   etc   ; 2,4-dichlorophenol; biochar; biomass; copper; deprotonation; hydrophobicity; models; pH; pyrolysis; rice straw; sorbents; sorption; sorption isotherms; thermoplastics; wastes; zinc;     Show all 17 Subjects
Abstract:
... High-performance biochar synthesized via co-pyrolysis of a polymer and rice straw (RS) was evaluated as a sorbent for ionizable halogenated phenols. Compared with RS-derived biochar, the sorption of 2,4-dichlorophenol (DCP), 2,4-dibromophenol (DBP), and 2,4-difluorophenol (DFP) onto polymer/RS-derived biochar was significantly enhanced by the properties of biochar changing due to polymer residues. ...
DOI:
10.1016/j.jenvman.2018.11.064

35. Kinetics, thermodynamics, equilibrium isotherms, and reusability studies of cationic dye adsorption by magnetic alginate/oxidized multiwalled carbon nanotubes composites

Author:
Boukhalfa, Nadia; Boutahala, Mokhtar; Djebri, Nassima; Idris, Ani
Source:
International journal of biological macromolecules 2019 v.123 pp. 539-548
ISSN:
0141-8130
Subject:
temperature,   etc   ; X-ray diffraction; adsorbents; adsorption; alginates; carbon nanotubes; citrates; endothermy; ferric oxide; maghemite; magnetism; methylene blue; models; nanoparticles; pH; sorption isotherms; thermodynamics;     Show all 17 Subjects
Abstract:
... Magnetic beads (AO-γ-Fe2O3) of alginate (A) impregnated with citrate coated maghemite nanoparticles (γ-Fe2O3) and oxidized multiwalled carbon nanotubes (OMWCNTs) were synthesized and used as adsorbent for the removal of methylene blue from water. The XRD analysis revealed that the diameter of γ-Fe2O3 is 10.24 nm. The mass saturation magnetization of AO-γ-Fe2O3 and γ-Fe2O3 were found to be 27.16 an ...
DOI:
10.1016/j.ijbiomac.2018.11.102

36. Removal of p-cresol and tylosin from water using a novel composite of alginate, recycled MnO2 and activated carbon

Author:
Shim, Jaehong; Kumar, Manish; Goswami, Ritusmita; Mazumder, Payal; Oh, Byung-Taek; Shea, Patrick J.
Source:
Journal of hazardous materials 2019 v.364 pp. 419-428
ISSN:
0304-3894
Subject:
temperature,   etc   ; activated carbon; adsorbents; adsorption; agitation; alginates; batteries; environmental impact; hazardous waste; livestock production; manganese dioxide; manufacturing; models; p-cresol; pH; pollutants; sorption isotherms; swine; tylosin; wastewater; wastewater treatment;     Show all 21 Subjects
Abstract:
... For sustainable production, there is an urgent need to minimize the adverse environmental impacts of swine farming, which is a major contributor of the pollutants p-cresol and tylosin. Novel reactive composite alginate beads (CAB-MOACs) were fabricated by combining alginate with activated carbon (AC) and MnO2 recovered from spent battery waste and used for efficient removal of p-cresol and tylosin ...
DOI:
10.1016/j.jhazmat.2018.09.065

37. Reusable bentonite clay: modelling and optimization of hazardous lead and p-nitrophenol adsorption using a response surface methodology approach

Author:
Zbair, Mohamed; Anfar, Zakaria; Ahsaine, Hassan Ait
Source:
RSC advances 2019 v.9 no.10 pp. 5756-5769
ISSN:
2046-2069
Subject:
temperature,   etc   ; adsorbents; adsorption; bentonite; clay; lead; models; p-nitrophenol; pH; response surface methodology; sorption isotherms; water pollution;     Show all 12 Subjects
Abstract:
... In this work, bentonite clay (BC) calcined at 500 °C was used as an adsorbent (BC-500) for the adsorption of Pb²⁺ and p-nitrophenol. The ability of BC-500 for the removal of Pb²⁺ and p-nitrophenol has been investigated. The adsorption studies tailored well the pseudo-first-order and the Langmuir model for Pb²⁺ and p-nitrophenol both. In addition, the optimal removal of Pb²⁺ and p-nitrophenol was f ...
DOI:
10.1039/c9ra00079h

38. Decontamination of organic pollutants from aqueous media using cotton fiber–graphene oxide composite, utilizing batch and filter adsorption techniques: a comparative study

Author:
Abd-Elhamid, A. I.; Nayl, A. A.; El. Shanshory, Ahmed A.; Soliman, Hesham M. A.; Aly, H. F.
Source:
RSC advances 2019 v.9 no.10 pp. 5770-5785
ISSN:
2046-2069
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; adsorption; aqueous solutions; decontamination; gentian violet; lint cotton; methylene blue; mixing; models; pH; pollutants; scanning electron microscopy; sodium chloride; sorption isotherms; thermogravimetry; transmission electron microscopy;     Show all 19 Subjects
Abstract:
... Cotton fiber–graphene oxide (C–GO) composite with high adsorptive properties towards the cationic dye, crystal violet (CV), was successfully fabricated by simple mixing of cotton fiber and GO in aqueous solution using a homogenizer. The as-prepared composite was characterized using TEM, SEM, LOM, XRD, FTIR, Raman and TGA. The characterization indicated that the formation of a homogeneous composite ...
DOI:
10.1039/c8ra10449b

39. Linear β-Cyclodextrin Polymer Functionalized Multiwalled Carbon Nanotubes as Nanoadsorbent for Highly Effective Removal of U(VI) from Aqueous Solution Based on Inner-Sphere Surface Complexation

Author:
Xue, Jin-Hua; Zhang, Hui; Ding, D. X.; Hu, Nan; Wang, Yong-Dong; Wang, Yong-Sheng
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.10 pp. 4074-4083
ISSN:
1520-5045
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; beta-cyclodextrin; carbon nanotubes; effluents; endothermy; models; pH; polymers; process design; scanning electron microscopy; sorption isotherms; thermodynamics; uranium; uranyl ions; wastewater;     Show all 20 Subjects
Abstract:
... Linear β-cyclodextrin polymer functionalized multiwalled carbon nanotubes (MWCNTs-CDP) were synthesized and employed as a novel nanoadsorbent to remove uranyl ions in wastewater solutions. The characterization of MWCNTs-CDP, with Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET), suggested that the CDP was successfully ...
DOI:
10.1021/acs.iecr.8b05453

40. Synthesis of Co3O4 nanoparticles and their performance towards methyl orange dye removal: Characterisation, adsorption and response surface methodology

Author:
Uddin, Mohammad Kashif; Baig, Umair
Source:
Journal of cleaner production 2019 v.211 pp. 1141-1153
ISSN:
0959-6526
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; analysis of variance; aqueous solutions; cobalt oxide; dyes; energy-dispersive X-ray analysis; experimental design; heat production; kinetics; methyl orange; models; nanoparticles; pH; particle size; response surface methodology; scanning electron microscopy; sorption isotherms; transmission electron microscopy; wastewater treatment;     Show all 22 Subjects
Abstract:
... This research article describes the synthesis of cobalt-oxide nanoparticles by simple precipitation technique and their environmental application. The prepared Co3O4 nanoparticles were characterised by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, selected area diffraction, and energy-dispersive X-ray spec ...
DOI:
10.1016/j.jclepro.2018.11.232

41. Taguchi design-based enhancement of heavy metals bioremoval by agroindustrial waste biomass from artichoke

Author:
Fernández-López, José A.; Angosto, José M.; Roca, María J.; Doval Miñarro, Marta
Source:
The Science of the total environment 2019 v.653 pp. 55-63
ISSN:
0048-9697
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; Taguchi method; agricultural wastes; aqueous solutions; artichokes; biomass; cadmium; chemical composition; copper; heavy metals; lead; metal ions; models; moieties; pH; remediation; sorbents; sorption; sorption isotherms; toxicity;     Show all 21 Subjects
Abstract:
... The Taguchi method of designing experiments is based on a system of tabulated designs (arrays) that enables the maximum number of variables to be estimated in a neutral (orthogonal) balanced manner with a minimum number of experimental sets. Heavy metals remediation of aqueous streams is of special concern due to its highly toxic and persistent nature. Taguchi approach was used for enhanced bioads ...
DOI:
10.1016/j.scitotenv.2018.10.343

42. Adsorption of arsenate from aqueous solution by ferric oxide-impregnated Dowex Marathon MSA anion exchange resin: application of non-linear isotherm modeling and thermodynamic studies

Author:
Tandorn, Sujitra; Arqueropanyo, Orn-anong; Naksata, Wimol; Sooksamiti, Ponlayuth; Chaisri, Ingon
Source:
Environmental earth sciences 2019 v.78 no.5 pp. 136
ISSN:
1866-6280
Subject:
temperature,   etc   ; Gibbs free energy; adsorbents; adsorption; anion exchange resins; aqueous solutions; arsenates; arsenic; endothermy; enthalpy; entropy; equations; models; pH; regression analysis; sorption isotherms;     Show all 16 Subjects
Abstract:
... The characteristic of adsorption of As(V) onto ferric oxide-impregnated anion resin Dowex marathon MSA (FO-Dowex) was investigated. Batch adsorption experiment was studied as a function of pH, contact time, initial As(V) concentration, and temperature. The results revealed that the adsorption of As(V) onto FO-Dowex was highly pH-dependent and that the equilibrium time was attained within 360 min. ...
DOI:
10.1007/s12665-019-8138-y

43. Biochar synthesized via pyrolysis of Broussonetia papyrifera leaves: mechanisms and potential applications for phosphate removal

Author:
Qiu, Guoqiang; Zhao, Yunlin; Wang, Hui; Tan, Xiaofei; Chen, Fangxu; Hu, Xinjiang
Source:
Environmental science and pollution research international 2019 v.26 no.7 pp. 6565-6575
ISSN:
0944-1344
Subject:
temperature,   etc   ; Broussonetia papyrifera; Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anaerobic conditions; biochar; decontamination; eutrophication; forests; ionic strength; ions; leaves; manganese; models; pH; phosphates; phosphorus; pyrolysis; scanning electron microscopes; scanning electron microscopy; sorption isotherms; surface water; thermogravimetry; wastes; zeta potential; China;     Show all 28 Subjects
Abstract:
... In this study, Broussonetia papyrifera leaves collected from land near a restored manganese mine in the Hunan Province of China were converted into biochar under high-temperature anaerobic conditions, regeneration and utilization of agricultural and forest waste, and applied to the prevention of eutrophication. The physicochemical properties of the B. papyrifera biochar were characterized using Mi ...
DOI:
10.1007/s11356-018-04095-w

44. Biosorption of heavy metal ions on peel of Artocarpus nobilis fruit: 1—Ni(II) sorption under static and dynamic conditions

Author:
Priyantha, Namal; Kotabewatta, P. A.
Source:
Applied water science 2019 v.9 no.2 pp. 37
ISSN:
2190-5487
Subject:
temperature,   etc   ; Artocarpus; adsorption; air drying; biosorbents; biosorption; edible fruits; heavy metals; metal ions; models; nickel; pH; regression analysis; sorption isotherms; wastewater; Sri Lanka;     Show all 16 Subjects
Abstract:
... The peel of the edible fruit, Artocarpus nobilis, a plant endemic to Sri Lanka, shows remarkable adsorption capabilities toward Ni(II), a heavy metal ion. Removal efficiency of 50% obtained with air-dried particles (0.710 mm < d < 1.0 mm) of the above waste material under both static and dynamic conditions. It is enhanced to 71% after optimization of shaking time, settling time and processed tempe ...
DOI:
10.1007/s13201-019-0911-2

45. Biosorption of Ni(II) ions from aqueous solution using modified Aloe barbadensis Miller leaf powder

Author:
Gupta, Shweta; Sharma, S.K.; Kumar, Arinjay
Source:
Water Science and Engineering 2019 v.12 no.1 pp. 27-36
ISSN:
1674-2370
Subject:
temperature,   etc   ; Aloe vera; Fourier transform infrared spectroscopy; aqueous solutions; biosorbents; biosorption; functional properties; ions; kinetics; leaves; models; nickel; pH; probability; scanning electron microscopy; sorption isotherms; surface area; zeta potential;     Show all 18 Subjects
Abstract:
... This study aimed to investigate the biosorption potential of Na2CO3-modified Aloe barbadensis Miller (Aloe vera) leaf (MABL) powder for removal of Ni(II) ions from a synthetic aqueous solution. Effects of various process parameters (pH, equilibrium time, and temperature) were investigated in order to optimize the biosorptive removal. The maximum biosorption capacity of MABL was observed to be 28.9 ...
DOI:
10.1016/j.wse.2019.04.003

46. Preparation, characterization and performance of an electrospun carbon nanofiber mat applied in hexavalent chromium removal from aqueous solution

Author:
Yuan, Zhihua; Cheng, Xiaoxia; Zhong, Lubin; Wu, Renxiang; Zheng, Yuming
Source:
Journal of environmental sciences (China) 2019 v.77 pp. 75-84
ISSN:
1001-0742
Subject:
temperature,   etc   ; X-ray photoelectron spectroscopy; adsorption; aqueous solutions; carbon nanofibers; carbonization; carcinogens; chromium; electrostatic interactions; human health; models; mutagens; oxyanions; pH; polyacrylonitrile; redox reactions; scanning electron microscopy; sodium hydroxide; sorption isotherms; titration; toxicity; water purification;     Show all 22 Subjects
Abstract:
... Hexavalent chromium, Cr(VI), a highly toxic oxyanion known as a carcinogen and mutagen, is an issue of concern due to its adverse impact on human health. Therefore, development of effective technologies and/or materials for Cr(VI) removal from water has been of great interest for researchers. In this study, an electrospun carbon nanofiber (CNF) mat was prepared via electrospinning polyacrylonitril ...
DOI:
10.1016/j.jes.2018.06.016

47. Production of Biochar from Food Waste and its Application for Phenol Removal from Aqueous Solution

Author:
Lee, Chang-Gu; Hong, Seung-Hee; Hong, Seong-Gu; Choi, Jae-Woo; Park, Seong-Jik
Source:
Water, air, and soil pollution 2019 v.230 no.3 pp. 70
ISSN:
0049-6979
Subject:
temperature,   etc   ; adsorbents; adsorption; aqueous solutions; biochar; copper sulfate; elemental composition; endothermy; environmental protection; food waste; ions; models; moieties; pH; phenol; pyrolysis; sorption isotherms; surface area; thermodynamics;     Show all 19 Subjects
Abstract:
... Deriving biochar from biowaste facilitates its reuse and application for environmental protection. This study addresses the adsorption of phenol onto food waste–based biochar (FWC). Phenol adsorption on FWC was affected by pyrolysis temperature, and the highest adsorption capacity was found at a temperature of 700 °C (FWC700). The characteristics of the biochar including morphology, surface area, ...
DOI:
10.1007/s11270-019-4125-x

48. Study of various diameter and functionality of TEMPO-oxidized cellulose nanofibers on paraquat adsorptions

Author:
Huang, Chih-Feng; Tu, Cheng-Wei; Lee, Rong-Ho; Yang, Cheng-Han; Hung, Wei-Chen; Andrew Lin, Kun-Yi
Source:
Polymer degradation and stability 2019 v.161 pp. 206-212
ISSN:
0141-3910
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; absorption; active sites; adsorption; cations; cellulose; cellulose nanofibers; cellulosic fibers; hemicellulose; models; moieties; oxidation; pH; paraquat; scanning electron microscopy; sorption isotherms; surface area; wide-angle X-ray scattering;     Show all 20 Subjects
Abstract:
... The adsorption of paraquat was examined in the presence of renewable nanomaterials of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) oxidized cellulose nanofibers (TOCNs) with different oxidation time (i.e. TOCN-1h, TOCN-4h, TOCN-8h, and TOCN-24h). First, we monitored the relationships among TEMPO-mediated oxidation times, cellulose surface functional groups, and fiber diameters. We observed the oxi ...
DOI:
10.1016/j.polymdegradstab.2019.01.023

49. Adsorption properties, kinetics & thermodynamics of tetracycline on carboxymethyl-chitosan reformed montmorillonite

Author:
Ma, Jianzhe; Lei, Yang; Khan, Muhammad Asim; Wang, Fengyun; Chu, Yuting; Lei, Wu; Xia, Mingzhu; Zhu, Sidi
Source:
International journal of biological macromolecules 2019 v.124 pp. 557-567
ISSN:
0141-8130
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; chlortetracycline; heat production; models; montmorillonite; pH; pollutants; sorption isotherms; tetracycline; thermogravimetry; wastewater treatment;     Show all 15 Subjects
Abstract:
... This paper describes a modification method of Na-montmorillonite (Na-Mt) with carboxymethyl-chitosan (CMC). The as-prepared samples were analyzed by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface analyzer and thermogravimetric analysis (TGA). Two common tetracycline antibiotics, tetracycline (TET) and chlortetracycline (CTC), were selected as the ...
DOI:
10.1016/j.ijbiomac.2018.11.235

50. Study on adsorption of tetracycline by Cu-immobilized alginate adsorbent from water environment

Author:
Zhang, Xiaonuo; Lin, Xiaoyan; He, Yu; Chen, Yan; Luo, Xuegang; Shang, Ran
Source:
International journal of biological macromolecules 2019 v.124 pp. 418-428
ISSN:
0141-8130
Subject:
temperature,   etc   ; Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; alginates; cations; endothermy; energy-dispersive X-ray analysis; hydrogen bonding; models; pH; pollution; scanning electron microscopy; sol-gel processing; sorption isotherms; tetracycline; thermodynamics; wastewater;     Show all 19 Subjects
Abstract:
... Widespread concern had been given raise to the pollution of antibiotics including tetracyclines in water environment in recent years. A novel Cu-immobilized alginate adsorbent had been synthesized successfully through a facile fabrication way called sol-gel method, and its adsorption performance had been investigated for the tetracycline removal at various conditions, including the pH, temperature ...
DOI:
10.1016/j.ijbiomac.2018.11.218