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You searched for: Journal name Environmental technology Remove constraint Journal name: Environmental technology Subject term aqueous solutions Remove constraint Subject term: aqueous solutions Subject term adsorption Remove constraint Subject term: adsorption
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1. Graphene oxide functionalized with cobalt ferrites applied to the removal of bisphenol A: ionic study, reuse capacity and desorption kinetics

Author:
Yasmin Jaqueline Fachina; Murilo Barbosa de Andrade; Ana Carolina Sestito Guerra; Tássia Rhuna Tonial dos Santos; Rosângela Bergamasco; Angélica Marquetotti Salcedo Vieira
Source:
Environmental technology 2022 v.43 no.9 pp. 1388-1404
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; bisphenol A; cobalt; desorption; environmental technology; ethanol; ferrimagnetic materials; graphene oxide; heat production; kinetics; magnetism; pH; solvents; sorption isotherms; temperature; ultrasonic treatment
Abstract:
... A new adsorbent material based on graphene oxide (GO) functionalized with magnetic cobalt ferrite nanoparticles (γCoFe₂O₄) was synthesized via ultrasonication to remove the endocrine-disrupting-chemical bisphenol A (BPA) from aqueous solutions. The synthesized material (GO-γCoFe₂O₄) was characterized by TEM, SEM, DRX and FTIR analysis. Magnetization measures proved that the adsorbent had superpara ...
DOI:
10.1080/09593330.2020.1830183

2. Magnetic polyphenol nanocomposite of Fe₃O₄/SiO₂/PP for Cd(II) adsorption from aqueous solution

Author:
Chuang Liu; Xiaoxue Jiang; Xiaoyu Wang; Qian Wang; Lanxin Li; Fugang Zhang; Wenyan Liang
Source:
Environmental technology 2022 v.43 no.6 pp. 935-948
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; environmental technology; magnetic materials; magnetism; models; nanocomposites; pH; polyphenols; sorption isotherms; water solubility
Abstract:
... In order to solve the water solubility and difficult re-use of plant polyphenol (PP) in Cd(II) adsorption, PP was immobilized on the surface of magnetic material in this study. A core-shell nanocomposite Fe₃O₄/SiO₂/PP (∼18 nm) was synthesized with 3–8 nm SiO₂ and 2–5 nm PP. TGA analysis revealed the PP coating amount was 2.39%. VSM detection suggested that saturation magnetization of Fe₃O₄/SiO₂/PP ...
DOI:
10.1080/09593330.2020.1811394

3. Production of polyacrylonitrile nanofibres modified with Cyanex 272 for recovery of gallium from solution

Author:
Bibiane N. Segala; Daniel A. Bertuol; Eduardo H. Tanabe
Source:
Environmental technology 2022 v.43 no.5 pp. 737-750
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; centrifugation; desorption; endothermy; environmental technology; equipment; gallium; kinetics; models; nanofibers; pH; polyacrylonitrile; thermodynamics
Abstract:
... The objectives of this work were to develop polyacrylonitrile nanofibres modified with the commercial Cyanex 272 extractor and apply them for the recovery of gallium present in aqueous solution. The nanofibres were produced using the centrifugation technique, employing Forcespinning® equipment. The average nanofibre diameter ranged from 530 to 840 nm. The highest adsorption of gallium was achieved ...
DOI:
10.1080/09593330.2020.1803991

4. Removal of phosphate at low concentration from water by porous PVA/Al₂O₃ composites

Author:
Xiaohu Li; Xiaoya Hu; Yuzheng Fu; Huiying Ai; Ming-Lai Fu; Baoling Yuan
Source:
Environmental technology 2022 v.43 no.3 pp. 345-354
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aluminum oxide; aqueous solutions; crosslinking; environmental technology; models; pH; phosphates; polyvinyl alcohol; temperature
Abstract:
... The porous polyvinyl alcohol (PVA)/Al₂O₃ composite by supporting activated alumina on the cross-linked network of PVA has been successfully prepared and its property for the removal of phosphate in aqueous solution was also evaluated. The structure of the PVA/Al₂O₃ was examined by scanning electron microscopy. It showed that the activated alumina particles with an average size of 1 μm were evenly ...
DOI:
10.1080/09593330.2020.1788169

5. Selective adsorption and separation of Cr(VI) by surface-imprinted microsphere based on thiosemicarbazide-functionalized sodium alginate

Author:
Yapei Luo; Heng Li; Minghua Wu; Wei Wang; Lili Wang
Source:
Environmental technology 2022 v.43 no.8 pp. 1140-1151
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; endothermy; environmental technology; glutaraldehyde; microparticles; sodium alginate
Abstract:
... Cr(VI)-imprinting thiosemicarbazide–functionalized sodium alginate (IIPTSC@SA) microspheres were fabricated to achieve the good selective adsorption for Cr(VI) removal from aqueous solution containing multiple ions. The selective adsorption and reusability of IIPTSC@SA microsphere were intensively investigated. The results showed that the grafting conditions of thiosemicarbazide were optimized at ...
DOI:
10.1080/09593330.2020.1818834

6. A practical method to remove perfluorooctanoic acid from aqueous media using layer double hydride system: a prospect for environmental remediation

Author:
Ammara Ahmed; Jinxin Wang; Wenmin Wang; Chioma Joy Okonkwo; Na Liu
Source:
Environmental technology 2022 v.43 no.7 pp. 1026-1037
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; environmental technology; heat treatment; hydrides; models; perfluorooctanoic acid; remediation; sorption isotherms; toxicity; wastewater
Abstract:
... Perfluorooctanoic acid (PFOA) is an organic compound that is persistent and very toxic to living organisms and the environment. In this study, two kinds of Mg-Al-layered double hydroxides (namely LDH-1 and 2) were synthesized using hydrothermal and dry grinding methods and used to adsorb PFOA from aqueous solution. The kinetic study revealed that a pseudo-2nd order model was the best method for de ...
DOI:
10.1080/09593330.2020.1812733

7. Adsorption of direct yellow brown D3G from aqueous solution using loaded modified low-cost lignite: Performance and mechanism

Author:
Qiongqiong He; Pengfei Ruan; Zhenyong Miao; Keji Wan; Mingqiang Gao; Xinyuan Li; Shaomeng Huang
Source:
Environmental technology 2021 v.42 no.11 pp. 1642-1651
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; dyes; environmental technology; equations; lignite; pH; reaction kinetics; sorption isotherms; ultrasonics; wastewater
Abstract:
... Low-cost lignite-based, copper-containing adsorbents (Cu-raw) were developed through a simple ultrasonic impregnation protocol for enhanced adsorption of direct yellow brown D3G (DYB) from aqueous solutions while treating copper-containing wastewater. The adsorbent was characterized by X-ray diffraction (XRD), scanning electron microscopy-energy dispersion spectroscopy (SEM-EDS), Fourier transform ...
DOI:
10.1080/09593330.2019.1675774

8. Assessment of reusable graphene wool adsorbent for the simultaneous removal of selected 2–6 ringed polycyclic aromatic hydrocarbons from aqueous solution

Author:
Adedapo O. Adeola; Patricia B.C. Forbes
Source:
Environmental technology 2022 v.43 no.8 pp. 1255-1268
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; chronic exposure; endothermy; environmental protection; environmental technology; graphene; hydrophobicity; interphase; regression analysis; thermodynamics; wool
Abstract:
... The United States Environmental Protection Agency categorized polycyclic aromatic hydrocarbons (PAHs) as hazardous to humans upon acute and/or chronic exposure. This study investigated the simultaneous adsorption of several PAHs onto graphene wool (GW), thereby providing holistic insights into the competitive adsorption of PAHs onto graphene-based materials. SEM, TEM and FTIR provided evidence for ...
DOI:
10.1080/09593330.2020.1824024

9. Biospecific separation of holmium(III) using raw and chemically treated bark powder of Mangifera indica: kinetics, isotherm and thermodynamic studies

Author:
Pravat Manjari Mishra; Loparani Barick; Aparna Prabha Devi; Krishna Kumari Swain
Source:
Environmental technology 2021 v.42 no.5 pp. 801-812
ISSN:
1479-487X
Subject:
Gibbs free energy; Mangifera indica; adsorption; aqueous solutions; bark; biomass; biosorbents; biosorption; cost effectiveness; endothermy; enthalpy; environmental technology; holmium; models; pH; sorption isotherms
Abstract:
... In this article, the biosorption of Holmium(III) from aqueous solution was carried out using both raw and acid-treated bark powder of Mangifera indica as bio-sorbents and the results are being compared. Batch experiments were conducted by varying different reaction parameters such as metal concentration, biomass dosage, pH of the metal solution and contact time. The results showed that the acid-tr ...
DOI:
10.1080/09593330.2019.1645741

10. Catalytic ozonation oxidation of ketoprofen by peanut shell-based biochar: effects of the pyrolysis temperatures

Author:
Haiquan Li; Sijia Liu; Siwei Qiu; Lei Sun; Xiangjuan Yuan; Dongsheng Xia
Source:
Environmental technology 2022 v.43 no.6 pp. 848-860
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; biochar; cellulose; environmental technology; hemicellulose; hydroxyl radicals; ketoprofen; oxidation; oxygen; ozonation; pH; peanut hulls; peanuts; pyrolysis; superoxide anion; surface area; surface roughness; temperature
Abstract:
... A series of peanut shell (HS)-based biochar were prepared at different pyrolysis temperatures and subsequently used as the effective ozonation catalysts for ketoprofen (KET) degradation in aqueous solution. The physicochemical properties and morphology of the obtained biochar were analysed by ICP, TG, XRD, FT-IR, SEM, TEM, BET and etc. characterizations. The results demonstrated that the pyrolysis ...
DOI:
10.1080/09593330.2020.1807610

11. Exploratory study of removing nutrients from aqueous environments employing a green synthesised nano zero-valent iron

Author:
Otman Abida; Fennie Van der Graaf; Loretta Y. Li
Source:
Environmental technology 2022 v.43 no.13 pp. 2017-2032
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; bananas; environmental technology; fruits; iron; mangoes; nitrate reduction; nitrates; phosphates; pomegranates; sodium borohydride
Abstract:
... This study explores the green synthesis of nano zero-valent iron (nZVI) extracted from the peel of selected waste fruits: banana (BP), mango (MP), and pomegranate (GP), for the removal of nutrients from aqueous environments. The extract was prepared by heating de-ionised water at 60°C for 5 min, adding a reducing and a stabilising agent, FeCl₃, then stirring with a N₂ gas flush solution to form ir ...
DOI:
10.1080/09593330.2020.1864480

12. Fabrication of RHA-silica/graphene oxide nanocomposites for removal of lead ions from water

Author:
Lu Thi Mong Thy; Dinh Trung Hau; Le Thi Kim Lien; Nguyen Duc Huy Hung; Tran Hoang Tu; Hoang Minh Nam; Nguyen Huu Hieu; Mai Thanh Phong
Source:
Environmental technology 2021 v.42 no.14 pp. 2202-2210
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; environmental technology; lead; nanocomposites; pH; rice hulls; surface area; thermogravimetry; transmission electron microscopy
Abstract:
... In this study, rice husk ash-silica/graphene oxide (RHA-SiO₂/GO) nanocomposites were synthesized by the in situ method using (3-aminopropyl) triethoxysilane as a coupling agent. The obtained products were used to remove lead ions (Pb²⁺) from aqueous solution. Effects of SiO₂:GO mass ratio, contact time, pH and initial Pb²⁺ concentration on the adsorption capacity were studied. It was found that th ...
DOI:
10.1080/09593330.2019.1696412

13. Tuning the photoactivity of TiO₂ nanoarchitectures doped with cerium or neodymium and application to colour removal from wastewaters

Author:
Gabriela Bonfanti Vieira; Gidiane Scaratti; Fabiano Severo Rodembusch; Suelen Maria De Amorim; Michael Peterson; Gianluca Li Puma; Regina De Fátima Peralta Muniz Moreira
Source:
Environmental technology 2021 v.42 no.7 pp. 1038-1052
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; cerium; color; crystal structure; decolorization; dyes; hot water treatment; irradiation; lighting; neodymium; oxygen; photocatalysis; photocatalysts; photosensitivity; surface area; toxicity; ultraviolet radiation; wastewater; water pollution
Abstract:
... The impact of cerium (Ce) and neodymium (Nd) rare-earth metal doping of TiO₂ prepared by the hydrothermal method was investigated to tailor effective photocatalytic degradation of coloured wastewater under UV or visible illumination. The hydrothermal treatment of TiO₂ decreased the pHₚzc from 6.3 to 3.1–3.8 favouring the affinity for cationic water contaminants. Doping with Ce and Nd modified the ...
DOI:
10.1080/09593330.2019.1651402

14. Ultrasound-assisted adsorption on porous ceramic for removal of iron in water

Author:
Luana Negris; Hélisson N. Santos; Rochele S. Picoloto; Felipe E. A. Alves; Erico M. M. Flores; Maria F. P. Santos; Maristela A. Vicente
Source:
Environmental technology 2022 v.43 no.8 pp. 1211-1224
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; ceramics; environmental technology; groundwater; iron; response surface methodology; sonication; temperature; ultrasonic treatment; ultrasonics
Abstract:
... This study proposes the use of an ultrasound-assisted adsorption system coupled to porous ceramic fragments to improve the removal of iron from FeSO₄ aqueous solution. Ultrasound was applied using an ultrasound bath at a low frequency (37 kHz, 330 W). The optimized conditions for Fe removal were achieved by 7 g of adsorbent, 40 min of sonication, 20 mg L–¹ of initial Fe concentration, and 30 °C of ...
DOI:
10.1080/09593330.2020.1822923

15. Zinc adsorption from aqueous solution on biosorbent from urban pruning waste

Author:
Gustavo Bordon Sia; Laís Gimenes Vernasqui; Nelson Consolin-Filho; Morgana Suszek Gonçalves; Flávia Vieira da Silva Medeiros
Source:
Environmental technology 2022 v.43 no.5 pp. 728-736
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; biosorbents; environmental technology; kinetics; pH; sorption isotherms; wastes; zinc
Abstract:
... In this study, urban pruning waste biosorbent after thermal activation process was used to remove zinc ion from aqueous solution. The zinc adsorption was fast, with values above 98.0% removal after 5 min. The maximum removal achieved was 99.4% in 360 min, at 30°C, pH 5.0, and initial zinc concentration of 10 mg L⁻¹. The adsorption process was adequately described by the pseudo-second-order kinetic ...
DOI:
10.1080/09593330.2020.1803418

16. A comprehensive new study on the removal of Pb (II) from aqueous solution by şırnak coal-derived char

Author:
Ebru Batur; Orhan Baytar; Sinan Kutluay; Sabit Horoz; Ömer Şahin
Source:
Environmental technology 2021 v.42 no.3 pp. 505-520
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; coal; cost effectiveness; environmental technology; experimental design; iodine value; pyrolysis; response surface methodology; sorption isotherms; surface area; temperature; thermogravimetry
Abstract:
... In this study, char was prepared from the Şırnak coal derivative as a new adsorbent by the pyrolysis process and successfully applied for Pb (II) removal. Prepared char adsorbent was characterized by analysis techniques such as thermogravimetric (TG)/differential thermogravimetric (DTG), iodine number, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and Brunaue ...
DOI:
10.1080/09593330.2020.1811397

17. A hybrid iron oxyhydroxide agglomerates-ultrafiltration process for efficient removal of chromate

Author:
Zongsu Wei; Raphael Semiat; Hilla Shemer
Source:
Environmental technology 2021 v.42 no.27 pp. 4229-4236
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; chromates; chromium; environmental technology; groundwater; hybrids; iron oxyhydroxides; surface water; ultrafiltration; water pollution
Abstract:
... Hexavalent chromium (Cr(VI)) is often detected in groundwater, surface water and soils. The objective of the research was to study a hybrid process of adsorption onto iron oxyhydroxide agglomerates (IOAs) and ultrafiltration (UF) for removal of Cr(VI) from aqueous solution. Initially, the adsorption of the chromium onto IOAs was characterized by SEM and Raman analyses. Next, the IOAs dosages, requ ...
DOI:
10.1080/09593330.2020.1751728

18. Adsorption characteristics of chloramphenicol onto powdered activated carbon and its desorption performance by ultrasound

Author:
Tingting Zhang; Yanling Yang; Xing Li; Yifan Jiang; Xiaoyan Fan; Peng Du; Hang Li; Nan Wang; Zhiwei Zhou
Source:
Environmental technology 2021 v.42 no.4 pp. 571-583
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; acoustics; activated carbon; adsorption; aqueous solutions; chloramphenicol; desorption; endothermy; environmental technology; hydroxyl radicals; liquid membranes; pH; porosity; surface area; thermodynamics; thermogravimetry; ultrasonics
Abstract:
... In this work, the adsorption characteristics, including adsorption kinetic, isotherm and thermodynamics of chloramphenicol (CAP) onto powdered activated carbon (PAC), were carried out, and the feasibility of using ultrasound to regenerate saturated PAC in aqueous solution was evaluated. The adsorption results demonstrated that the adsorption mechanism was a complex process including surface adsorp ...
DOI:
10.1080/09593330.2019.1637464

19. Adsorption of Methylene blue and Congo red from aqueous solution using synthesized alumina–zirconia composite

Author:
Ajayi O. Adesina; Okoronkwo A. Elvis; Nelcy D.S. Mohallem; Sunday J. Olusegun
Source:
Environmental technology 2021 v.42 no.7 pp. 1061-1070
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; combustion; electrostatic interactions; environmental technology; heat production; methylene blue; models; pH
Abstract:
... Alumina–zirconia (Al₂O₃–ZrO₂) composite was prepared by combustion method and used to remove Congo red and Methylene blue from aqueous solutions. It was characterized using SEM–EDS, XRD and gas adsorption techniques. The results obtained from gas adsorption and SEM agree with each other, showing meso- and macro-porosity of inter-agglomerate pores. The removal of the two dyes was pH dependent, acid ...
DOI:
10.1080/09593330.2019.1652696

20. Adsorption of chromium by functionalized metal organic frameworks from aqueous solution

Author:
Xinfeng Xiao; Yuying Deng; Jianliang Xue; Yu Gao
Source:
Environmental technology 2021 v.42 no.12 pp. 1930-1942
ISSN:
1479-487X
Subject:
X-ray diffraction; adsorption; aqueous solutions; chromium; coordination polymers; environmental technology; equations; heavy metals
Abstract:
... Based on Cu-BTC metal-organic framework, thiol-functionalized and amino functionalized materials were prepared by the modified Stöber method. Then, the Cu₃(BTC)₂ and the functionalized materials were characterized by means of X-ray diffraction, SEM-EDS and FT-IR analysis. The adsorption properties of two materials for Cr(VI) were investigated. Both functionalized materials show good adsorption und ...
DOI:
10.1080/09593330.2019.1683618

21. Adsorption removal of Ni(II) and phenol from aqueous solution by modified attapulgite and its composite hydrogel

Author:
Jianjian Li; Yiwei Zheng; Xia Feng; Chao Lv; Xingtian Liu; Yiping Zhao; Li Chen
Source:
Environmental technology 2021 v.42 no.15 pp. 2413-2427
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acrylamides; adsorbents; adsorption; aqueous solutions; cetyltrimethylammonium bromide; clay; environmental technology; equations; heavy metals; humic acids; hydrogels; models; phenol; polyacrylamide; remediation; sodium chloride; sorption isotherms; transmission electron microscopes; wastewater
Abstract:
... Attapulgite (ATP) and its organically modified products have been investigated for potential applications in environmental remediation. In this work, a variety of modifiers with different functional groups, including saturated sodium chloride solution (NaCl), cetyltrimethyl ammonium bromide (CTAB) and humic acid (HA), were used to treat attapulgite clay firstly, and then with the modified ATP as a ...
DOI:
10.1080/09593330.2019.1703821

22. Efficient graphene-coated iron oxide (GCIO) nanoadsorbent for removal of lead and arsenic ions

Author:
Nidhi Khare; Jaya Bajpai; A. K. Bajpai
Source:
Environmental technology 2021 v.42 no.14 pp. 2187-2201
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; arsenic; environmental technology; iron oxides; kinetics; lead; models; pH; sorption isotherms; temperature
Abstract:
... The graphene-coated iron oxide (GCIO) was used for the removal of Pb²⁺ and As³⁺ ions from aqueous solution. For the characterization of GCIO, several techniques (FTIR, XRD, EDX, SEM, TEM, TGA, DSC and vibrating sample magnetometry) were used which indicated the interaction of Pb²⁺ and As³⁺ with adsorbent. In addition, the effects of adsorbate concentration, different composition of adsorbent, temp ...
DOI:
10.1080/09593330.2019.1696411

23. Enhanced removal performance for Congo red by coal-series kaolin with acid treatment

Author:
Sanxin Niu; Xiaokang Xie; Zheng Wang; Linhui Zheng; Feng Gao; Yang Miao
Source:
Environmental technology 2021 v.42 no.10 pp. 1472-1481
ISSN:
1479-487X
Subject:
acid treatment; adsorption; aqueous solutions; dyes; environmental technology; heat production; hydrochloric acid; kaolin; models; pollutants; remediation; sorption isotherms; surface area; zeta potential
Abstract:
... In this study, acid treatment coal-series kaolin (AK) materials (named 2AK, 3AK, 5AK, 10AK) were synthesized by a facile method. Batch adsorption experiments were carried out using Congo red (CR) as a model dye pollutant in various experimental conditions. The samples were studied by XRF, XRD, FTIR, SEM, Zeta potential and N₂ adsorption techniques. The results indicate that the acid treatment mate ...
DOI:
10.1080/09593330.2019.1670269

24. Facile preparation of EDTA-functionalized magnetic chitosan for removal of co(II) from aqueous solutions

Author:
Donghai Yuan; Wanxia Liu; Jiazhuo Wang; Jun Cui; Liansheng He; Chenling Yan; Yingying Kou; Junqi Li
Source:
Environmental technology 2021 v.42 no.9 pp. 1313-1325
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; chitosan; environmental technology; heavy metals; ligands; magnetism; models; pH; thermodynamics; wastewater
Abstract:
... In this study, an efficient adsorption and reusable magnetic ligand material (Fe₃O₄@Chitosan-EDTA) was synthesized by binding EDTA dianhydride onto magnetic chitosan, and it was employed in removal of Co(II) from aqueous solution. The maximum adsorption capacity of Co(II) onto Fe₃O₄@CS-EDTA was 48.78 mg/g at pH = 5 (303 K), which is much higher than that of Fe₃O₄@Chitosan as well as chitosan. The ...
DOI:
10.1080/09593330.2019.1665112

25. Kinetic and mechanistic study of dye sorption onto renewable resource-based doped carbon prepared by a microwave-assisted method

Author:
Samantha Macchi; Noureen Siraj; Tito Viswanathan
Source:
Environmental technology 2021 v.42 no.26 pp. 4115-4124
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; biochar; carbon; environmental technology; methylene blue; microwave treatment; models; nitrogen; pH; phosphorus; pollutants; sorption isotherms; surface area; toxicity
Abstract:
... Herein, a facile synthesis of heteroatom doped biochar is reported. The material is characterized and analyzed in detail for its application as a low-cost adsorbent for removal of a toxic dye pollutant, Methylene Blue (MB), from aqueous solution. Synthesized material showed enhanced surface area compared to parent biochar (458 to802 m²g⁻¹) The adsorbent’s performance is investigated using batch ad ...
DOI:
10.1080/09593330.2020.1745293

26. Magnetite nanoparticles decorated on multi-walled carbon nanotubes for removal of Cu²⁺ from aqueous solution

Author:
Natcha Temnuch; Akapong Suwattanamala; Saowaluk Inpaeng; Karaked Tedsree
Source:
Environmental technology 2021 v.42 no.23 pp. 3572-3580
ISSN:
1479-487X
Subject:
acid treatment; adsorbents; adsorption; aqueous solutions; carbon nanotubes; colloids; coprecipitation; environmental technology; magnetite; sorption isotherms; water treatment
Abstract:
... Acid-functionalized multi-walled carbon nanotube (MWCNTs-COOH) was prepared by acid treatment followed by decoration with magnetite (Fe₃O₄) nanoparticles (Fe₃O₄/MWCNTs-COOH) by co-precipitation of Fe²⁺/Fe³⁺ in the colloidal suspension of MWCNTs-COOH. The adsorption capacity and separation efficiency of these two adsorbents were investigated for the removal of Cu²⁺ ions in aqueous solution as water ...
DOI:
10.1080/09593330.2020.1740328

27. Optimization of lead removal in exhausting Manilkara zapota based activated carbon: application of response surface methodology

Author:
S. Sujatha; G. Venkatesan; R. Sivarethinamohan
Source:
Environmental technology 2020 v.41 no.19 pp. 2478-2493
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; Manilkara zapota; activated carbon; adsorbents; adsorption; analysis of variance; aqueous solutions; environmental technology; equations; kinetics; lead; models; pH; response surface methodology; trees
Abstract:
... The present study demonstrates the removal of lead ion from aqueous solution by the adsorption process using Manilkara zapota tree wood-based activated carbon (MZTWAC) as an adsorbent. The MZTWAC was characterized using a scanning electron microscope and Fourier transform infrared spectroscopy. XRD analysis was carried on MZTWAC. Batch adsorption studies were designed and performed to evaluate the ...
DOI:
10.1080/09593330.2019.1570347

28. Polar modified dendritic post-cross-linked polymer for Cu²⁺ adsorption

Author:
Xiaomi Yuan; Fa Zhou; Fang Long; Ruilin Man; Jianhan Huang
Source:
Environmental technology 2021 v.42 no.9 pp. 1402-1410
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; carbonyl compounds; chelation; chemical interactions; coordination compounds; copper; crosslinking; dendrimers; diffusivity; enthalpy; reaction kinetics; sorption isotherms
Abstract:
... The polar modified dendritic post-cross-linked polymer, namely HCPD was synthesized and used for adsorptive removal of Cu²⁺ from aqueous solution. The results showed that 5.12 mmol/g of amino and 2.25 mmol/g of carbonyl groups were uploaded on the polymer and these groups were significantly beneficial for Cu²⁺ removal. The maximum capacity reached 157.8 mg/g at 313 K and increased as the temperatu ...
DOI:
10.1080/09593330.2019.1669721

29. Study on the adsorption and desorption performance of magnetic resin for Congo red

Author:
Qiang Li; Min Wang; Xiangjuan Yuan; Dongya Li; Haiming Xu; Lei Sun; Fei Pan; Dongsheng Xia
Source:
Environmental technology 2021 v.42 no.10 pp. 1552-1559
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; desorption; dyes; environmental technology; ion exchange; kinetics; magnetism; sorption isotherms; wastewater
Abstract:
... This study was to evaluate the adsorption capability of a magnetic resin (NDMP) to the removal of Congo red (CR) from aqueous solution. The adsorption kinetic and isotherm of NDMP were studied, as well as the desorption performance of NDMP. The results showed that the adsorption process of NDMP on CR was more suitable for Pseudo-second-order kinetic model. The whole adsorption process was affected ...
DOI:
10.1080/09593330.2019.1673830

30. Study on the denitrification and dephosphorization of the aqueous solution by Chitosan/4A Zeolite/Zr based Zeolite

Author:
Yuanling Zhang; Min Yang; Hua Gui; Tiantian Zhao; Wei Tan; Hongbin Wang
Source:
Environmental technology 2021 v.42 no.2 pp. 227-237
ISSN:
1479-487X
Subject:
acetic acid; adsorption; ammonium nitrogen; aqueous solutions; chitosan; denitrification; environmental technology; kinetics; pH; phosphorus; sorption isotherms; temperature; zeolites
Abstract:
... The ternary hybrid material chitosan/4A Zeolite/Zr based Zeolite was synthesized by using 4A zeolite molecular sieve, Zr-zeolite and chitosan acetic acid solution as starting materials. The prepared composite were characterized by SEM, FT-IR and XRD. The experimental conditions such as the concentration of chitosan acetic acid solution, mass ratio of mass ratio of chitosan acetic acid solution, 4A ...
DOI:
10.1080/09593330.2019.1625958

31. Synergistic effect of zeolite/chitosan in the removal of fluoride from aqueous solution

Author:
Javier A. Arcibar-Orozco; Alfredo I. Flores-Rojas; José R. Rangel-Mendez; Paola E. Díaz-Flores
Source:
Environmental technology 2020 v.41 no.12 pp. 1554-1567
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; adsorption; aqueous solutions; biocomposites; biopolymers; biosorbents; chitosan; electron microscopy; environmental technology; fluorides; fluorine; nitrogen; pH; pollutants; pollution control; synergism; temperature; thermodynamics; titration; zeolites
Abstract:
... Today, fluoride represents one of the most often found, and resilient, pollutants threatening the health of millions of people around the globe. The use of biosorbents is an interesting alternative technique for the removal of fluorine-ions. Chitosan is a natural biopolymer with surface groups capable of removing fluorine; however, their lack of mechanical stability restricts its application. In t ...
DOI:
10.1080/09593330.2018.1542033

32. Treatment of aqueous solutions of 1,4-dioxane by ozonation and catalytic ozonation with copper oxide (CuO)

Author:
Gidiane Scaratti; Alex Basso; Richard Landers; Pedro J. J. Alvarez; Gianluca Li Puma; Regina F. P. M. Moreira
Source:
Environmental technology 2020 v.41 no.11 pp. 1464-1476
ISSN:
1479-487X
Subject:
Vibrio fischeri; active sites; adsorption; aqueous solutions; bioluminescence assay; catalysts; catalytic activity; copper; cupric oxide; dioxane; environmental technology; ethylene glycol; formic acid; hydrolysis; leaching; mineralization; ozonation; ozone; pH; phosphates; reaction mechanisms; superoxide anion; total organic carbon; toxicity
Abstract:
... In this study, treatment for the removal of 1,4-dioxane by ozone and by catalytic ozonation using CuO as the catalyst was investigated. While the removal of 1,4-dioxane was small (20%) and mineralization negligible after 6 h of ozonation treatment, the removals of 1,4-dioxane and total organic carbon increased by factors of 10.35 and 81.25, respectively, after catalytic ozonation in the presence o ...
DOI:
10.1080/09593330.2018.1538259

33. ZnCl₂-activated carbon from soybean dregs as a high efficiency adsorbent for cationic dye removal: isotherm, kinetic, and thermodynamic studies

Author:
Yali Li; Yanhui Li; Haoliang Zang; Long Chen; Zhihua Meng; Hong Li; Lijie Ci; Qiuju Du; Dechang Wang; Cuiping Wang; Hongliang Li; Yanzhi Xia
Source:
Environmental technology 2020 v.41 no.15 pp. 2013-2023
ISSN:
1479-487X
Subject:
activated carbon; adsorbents; adsorption; aqueous solutions; carbonization; endothermy; environmental technology; methylene blue; models; pH; sorption isotherms; soybeans; temperature; thermodynamics; zinc chloride
Abstract:
... Activated carbon was prepared from soybean dregs using chemical activation by zinc chloride. The influence of activation parameters such as impregnation ratio, activation temperature and carbonization time was investigated. The physicochemical properties of activated carbon were characterized using SEM, FTIR, BET and TGA, respectively. The effect factors including pH, contact time, temperature and ...
DOI:
10.1080/09593330.2018.1554006

34. Adsorption of Diuron from aqueous solution onto commercial organophilic clay: kinetic, equilibrium and thermodynamic study

Author:
Fernando Manzotti de Souza; Onélia Aparecida Andreo dos Santos
Source:
Environmental technology 2020 v.41 no.5 pp. 603-616
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; clay; desorption; diuron; endothermy; ethanol; nitrogen; nonlinear models; remediation; scanning electron microscopy; temperature; thermodynamics; wastewater
Abstract:
... Due to their abundance in nature, clays have been frequently studied in the adsorption of different emergent contaminants, since they have good efficiency and low cost. Therefore, the present study aimed to evaluate the performance of commercial organoclays as an adsorbent in the environmental remediation of wastewater containing the herbicide Diuron. The clay was characterized by the techniques o ...
DOI:
10.1080/09593330.2018.1505967

35. Adsorption of Ni(II) ions by magnetic activated carbon/chitosan beads prepared from spent coffee grounds, shrimp shells and green tea extract

Author:
Van Thuan Le; My Uyen Dao; Hoang Sinh Le; Dai Lam Tran; Van Dat Doan; Hoai Thuong Nguyen
Source:
Environmental technology 2020 v.41 no.21 pp. 2817-2832
ISSN:
1479-487X
Subject:
activated carbon; adsorbents; adsorption; aqueous solutions; chitosan; endothermy; environmental technology; green tea; magnetism; pH; shrimp; sorption isotherms; temperature; thermodynamics; wastewater
Abstract:
... Magnetic activated carbon/chitosan composite (MACCS) beads from spent coffee grounds and shrimp shells were synthesized using green tea extract as a crosslinker. The adsorbent was then applied for removal of Ni(II) ions from aqueous solution after carefully characterizing it by various techniques (XRD, FTIR, FE-SEM, EDX, VSM and BET). The adsorption kinetics, isotherms, thermodynamics, the effects ...
DOI:
10.1080/09593330.2019.1584250

36. Adsorption of Pb²⁺ from aqueous solutions using Fe–Mn binary oxides-loaded biochar: kinetics, isotherm and thermodynamic studies

Author:
Lianke Zhang; Xinyu Liu; Xuemin Huang; Weida Wang; Peng Sun; Yumei Li
Source:
Environmental technology 2019 v.40 no.14 pp. 1853-1861
ISSN:
1479-487X
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; biochar; chemical interactions; endothermy; energy-dispersive X-ray analysis; lead; models; pH; scanning electron microscopy; sorption isotherms; temperature; thermodynamics
Abstract:
... This study evaluated the removal of Pb²⁺ in aqueous solution using Fe–Mn binary oxides-loaded biochar (BFMs). The characteristics of BFM were obtained using a scanning electron microscopy, an energy dispersive spectrometer (EDS), Brunauer-Emmett-Teller, a X-ray diffraction (XRD), and a X-ray photoelectron spectroscopy (XPS). The effects of pH, adsorbent dose, contact time, initial Pb²⁺ concentrati ...
DOI:
10.1080/09593330.2018.1432693

37. Adsorption of RE³⁺ from aqueous solutions by bayberry tannin immobilized on chitosan

Author:
Xianying Qiu; Yueyue Shen; Ruilin Yang; Hongcheng Zhang; Shilin Zhao
Source:
Environmental technology 2019 v.40 no.2 pp. 202-209
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; absorbents; adsorbents; adsorption; aqueous solutions; cerium; chitosan; environmental technology; equations; industrial wastewater; ions; lanthanum; nitric acid; scanning electron microscopy; sorption isotherms
Abstract:
... Bayberry tannin immobilized on chitosan (CS-BT) was successfully prepared, and its adsorption performance was studied for aqueous solutions of rare earth ions. The as-prepared absorbents were characterized by Fourier transform infrared spectrometry and scanning electron microscopy. The equilibrium adsorption capacity was achieved in approximately 30 min. The adsorption process of CS-BT for Nd³⁺ wa ...
DOI:
10.1080/09593330.2017.1384072

38. Adsorption of lead ion from aqueous solution by modified walnut shell: kinetics and thermodynamics

Author:
Shenmaishang Li; Zuoxiang Zeng; Weilan Xue
Source:
Environmental technology 2019 v.40 no.14 pp. 1810-1820
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; data analysis; energy; equations; lead; maleic anhydrides; models; pH; scanning electron microscopy; sorption isotherms; temperature; thermodynamics; walnut hulls
Abstract:
... The novel modified walnut shell (WNS-MAH) with higher adsorption capacity for lead ion was prepared by reacting walnut shell (WNS) with maleic anhydride. Both WNS and WNS-MAH were analyzed by SEM and FTIR. The adsorption capacity of WNS-MAH for lead ion was evaluated at different adsorbent doses, pHs, time and temperatures. The adsorption kinetics and adsorption isotherms were investigated from (2 ...
DOI:
10.1080/09593330.2018.1430172

39. Adsorptive removal of methyl orange with polyaniline nanofibers: an unconventional adsorbent for water treatment

Author:
Monika Duhan; Raminder Kaur
Source:
Environmental technology 2020 v.41 no.23 pp. 2977-2990
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; ammonium persulfate; aqueous solutions; dyes; energy; environmental technology; methyl orange; models; nanofibers; oxidants; pH; polyaniline; polymerization; sorption isotherms; surface area; transmission electron microscopes; ultraviolet-visible spectroscopy; water treatment
Abstract:
... The present study reports the adsorptive removal of methyl orange (MO) from its aqueous solution by the utilization of polyaniline (PANI) nanofibers. PANI nanofibers were synthesized by the conventional interfacial polymerization method using ammonium persulphate as an oxidant in an acidic medium. The average diameter of the synthesized PANI nanofibers was found to be 60 ± 5 nm as detected by high ...
DOI:
10.1080/09593330.2019.1593511

40. Ammonium removal from aqueous solutions by fixed-bed column using corncob-based modified biochar

Author:
Lan Huong Nguyen; Thi Mai Vu; Thi Trinh Le; Van Tuyen Trinh; Thi Pha Tran; Huu Tap Van
Source:
Environmental technology 2019 v.40 no.6 pp. 683-692
ISSN:
1479-487X
Subject:
adsorbents; adsorption; ammonium; aqueous solutions; binding sites; biochar; corn cobs; environmental technology; models; nitric acid; sodium chloride; sodium hydroxide
Abstract:
... This study investigated the potential of removing ammonium () from aqueous solutions using corncob based on modified biochar (MBCC) in the fixed-bed column. Corncob biochar was soaked in a mixture of HNO₃ 6.0 M and NaOH 0.3 M to prepare active binding sites for ammonium removal. The effect of initial ammonium concentrations (10–40 mg/L), flow rates (1–9 mL/min) and MBCC fixed-bed heights (8–24 cm) ...
DOI:
10.1080/09593330.2017.1404134

41. Development of α- and γ-Fe₂O₃ decorated graphene oxides for glyphosate removal from water

Author:
Tássia R. T. Santos; Murilo B. Andrade; Marcela F. Silva; Rosângela Bergamasco; Safia Hamoudi
Source:
Environmental technology 2019 v.40 no.9 pp. 1118-1137
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; environmental technology; ferric oxide; glyphosate; graphene oxide; heat production; kinetics; magnetic properties; magnetic separation; magnetism; nanoparticles; sol-gel processing; solvents; sorption isotherms; temperature; ultrasonic treatment
Abstract:
... In this study, the proposed adsorbent composed of graphene oxide (GO) functionalized by magnetic nanoparticles of iron oxide (α-γ-Fe₂O₃) was obtained by a simple ultrasonication process. This new material was used for the removal of glyphosate in water. The nanoparticulated iron oxide used was synthesized by means of a modified sol–gel method, which does not use organic solvents. The adsorbent mat ...
DOI:
10.1080/09593330.2017.1411397

42. Direct red 81 adsorption on iron filings from aqueous solutions; kinetic and isotherm studies

Author:
Mansooreh Dehghani; Majid Nozari; Atefeh Fakhraei Fard; Marziyeh Ansari Shiri; Narges Shamsedini
Source:
Environmental technology 2019 v.40 no.13 pp. 1705-1713
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; dyes; iron; models; pH; sorption isotherms; textile industry; water solubility
Abstract:
... Direct Red 81 (DR-81) dye with a very high water solubility is widely used in many industries particularly textile industries. This study aimed to evaluate the practicability of using iron filings for the adsorption of DR-81 dye from the aqueous solutions. The effects of pH, adsorbent dose, initial DR-81 dye concentration, and adsorption time on adsorption process were also evaluated. The maximum ...
DOI:
10.1080/09593330.2018.1428228

43. Enhanced adsorption of Cd(II) using a composite of poly(acrylamide-co-sodium acrylate) incorporated LDH@MoS²₄−

Author:
Mei Yang; Liang Peng; Anwei Chen; Qingru Zeng; Jihai Shao; Si Luo; Jidong Gu
Source:
Environmental technology 2020 v.41 no.3 pp. 357-365
ISSN:
1479-487X
Subject:
X-ray photoelectron spectroscopy; acid tolerance; adsorption; agricultural soils; aluminum; aqueous solutions; cadmium; chemical bonding; kinetics; magnesium; pH; polluted soils; remediation
Abstract:
... The Mg/Al layered double hydroxide (Mg/Al-LDH) intercalated with the (MoS₄-LDH) impregnated into poly(acrylamide-co-sodium acrylate) (PP) was synthesized as layered double hydroxides-PP (LDHS-PP), whose characterization, adsorption properties and mechanisms were investigated. The maximum adsorption capacity (qₘ) for Cd(II) was ∼2789.58 mg/g by 1% LDHS-PP, while it was ∼1893.09 mg/g by PP, which in ...
DOI:
10.1080/09593330.2018.1498922

44. Evaluation of phosphate adsorption on zirconium/magnesium-modified bentonite

Author:
Jianwei Lin; Siqi He; Yanhui Zhan; Honghua Zhang
Source:
Environmental technology 2020 v.41 no.5 pp. 586-602
ISSN:
1479-487X
Subject:
X-ray diffraction; adsorbents; adsorption; aqueous solutions; bentonite; chlorides; energy-dispersive X-ray analysis; kinetics; magnesium; models; nuclear magnetic resonance spectroscopy; pH; phosphates; phosphorus; potassium; scanning electron microscopy; sodium; sorption isotherms; stable isotopes; surface area; zirconium
Abstract:
... In this work, a zirconium/magnesium-modified bentonite (ZrMgBT) was prepared and characterized by SEM, EDS, XRD and pHPZC. The performance and mechanism of phosphate adsorption onto ZrMgBT was evaluated in detail using batch experiments and ³¹P NMR. Results showed the adsorption isotherm data were well described by the Langmuir, Freundlich and Dubinin-Radushkevich models, and the kinetic data fitt ...
DOI:
10.1080/09593330.2018.1505966

45. Fabrication of calixarene-grafted magnetic nanocomposite for the effective removal of lead(II) from aqueous solution

Author:
Muhammad Afzal Kamboh; Wan Aini Wan Ibrahim; Hamid Rashidi Nodeh; Liaquat Ali Zardari; Mohd Marsin Sanagi
Source:
Environmental technology 2019 v.40 no.19 pp. 2482-2493
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; aromatic hydrocarbons; atomic absorption spectrometry; elemental composition; energy-dispersive X-ray analysis; lead; magnetism; models; nanocomposites; nanoparticles; pH; scanning electron microscopy; sorption isotherms; thermal stability; thermogravimetry
Abstract:
... Magnetic nanocomposites adorned with calixarene were successfully prepared by immobilizing diethanolamine functionalized p-tert-butylcalix[4]arene (DEA-Calix) onto silica-coated magnetic nanoparticles (MNPs). The synthesis, surface morphology, purity, elemental composition and thermal stability of newly prepared nanocomposites were analyzed using FT-IR spectroscopy, scanning electron microscopy (S ...
DOI:
10.1080/09593330.2018.1444100

46. Growth and optimization of carbon nanotubes in powder activated carbon for an efficient removal of methylene blue from aqueous solution

Author:
Haiyam Mohammed Alayan; Mohammed Abdulhakim Alsaadi; Mohammed Khaled AlOmar; Mohd Ali Hashim
Source:
Environmental technology 2019 v.40 no.18 pp. 2400-2415
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; activated carbon; adsorbents; adsorption; aqueous solutions; carbon nanotubes; electrostatic interactions; energy-dispersive X-ray analysis; feedstocks; methylene blue; models; pH; potassium permanganate; scanning electron microscopy; screening; sorption isotherms; surface area; temperature; thermogravimetry; transmission electron microscopy; vapors; zeta potential
Abstract:
... This work demonstrated the synthesis of carbon nanotubes (CNTs) on powder activated carbon (PAC) impregnated with Ni-catalyst through chemical vapour deposition. The optimized effects of reaction temperature, time and feedstock flow rates on CNT growth were examined. Potassium permanganate (KMnO₄) and potassium permanganate in acidic solution (KMnO₄/H₂SO₄) were used to functionalize CNTs samples. ...
DOI:
10.1080/09593330.2018.1441911

47. Performance and dynamic modelling of biochar and kaolin packed bed adsorption column for aqueous phase methylene blue (MB) dye removal

Author:
Sara Dawood; Tushar Kanti Sen; Chi Phan
Source:
Environmental technology 2019 v.40 no.28 pp. 3762-3772
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; biochar; dose response; dynamic models; kaolin; mass transfer; methylene blue; process design; regression analysis; wastewater treatment
Abstract:
... A practical continuous adsorption study in a packed-bed column was conducted by using two separate layers of kaolin and pine cone based biochar packed bed adsorbents for the removal of methylene blue (MB) dye from its aqueous solution. A series of column experiments were performed to determine the breakthrough curves (BTCs) by varying bed height (3–7 cm), inlet flow rate (13–17 ml/min) and initial ...
DOI:
10.1080/09593330.2018.1491065

48. Removal of ciprofloxacin from aqueous solution by rabbit manure biochar

Author:
Wen Huang; Jiao Chen; Jianqiang Zhang
Source:
Environmental technology 2020 v.41 no.11 pp. 1380-1390
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; biochar; ciprofloxacin; endothermy; environmental technology; feces; hydrogen bonding; liquids; models; moieties; pH; pyrolysis; rabbits; scanning electron microscopy; sorption isotherms; surface area; temperature; thermodynamics; wastewater
Abstract:
... Biochar was prepared from rabbit faeces at 400°C, 500°C, 600°C, and 700°C, respectively (labelled RFB₄₀₀, RFB₅₀₀, RFB₆₀₀, and RFB₇₀₀, respectively), and was characterized by elemental analysis, BET, SEM and FTIR. The adsorption factors, kinetics, isothermal adsorption and thermodynamics of the adsorption properties were investigated in batch experiments. The results showed that RFB possessed a lar ...
DOI:
10.1080/09593330.2018.1535628

49. Simultaneous removal of Pb(II), Cd(II) and bacteria from aqueous solution using amino-functionalized Fe₃O₄/NaP zeolite nanocomposite

Author:
Mojgan Zendehdel; Majid Ramezani; Bahareh Shoshtari-Yeganeh; Giuseppe Cruciani; Azadeh Salmani
Source:
Environmental technology 2019 v.40 no.28 pp. 3689-3704
ISSN:
1479-487X
Subject:
Bacillus subtilis; Fourier transform infrared spectroscopy; Gram-negative bacteria; Gram-positive bacteria; Pseudomonas aeruginosa; X-ray diffraction; acid treatment; adsorbents; adsorption; antibacterial properties; aqueous solutions; bacterial growth; cadmium; drugs; energy; energy-dispersive X-ray analysis; heavy metals; iron oxides; kinetics; lead; magnetic separation; models; nanocomposites; pH; scanning electron microscopy; sorption isotherms; temperature; thermodynamics; thermogravimetry; transmission electron microscopy; zeolites
Abstract:
... Fe₃O₄/NaP nanocomposite was synthesized and modified using 3-aminopropyltrimethoxysilane (3-APTS)-functionalization. Fe₃O₄/NaP/NH₂ was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, elemental analysis, energy-dispersive X-ray analysis, vibrating sample magnetometer, Brunauer-Emmett-Teller and thermogravim ...
DOI:
10.1080/09593330.2018.1485750

50. Simultaneous removal of methylene blue and Pb²⁺ from aqueous solution by adsorption on facile modified lignosulfonate

Author:
Xiaomei Zhang; Anwu Lu; Dapei Li; Liang Shi; Zaigang Luo; Chengsong Peng
Source:
Environmental technology 2020 v.41 no.13 pp. 1677-1690
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; crosslinking; environmental technology; lignosulfonates; methylene blue; models; pH; sorption isotherms; temperature
Abstract:
... In this paper, simultaneous removal of methylene blue (MB) and Pb²⁺ from the binary component system by an easily prepared cross-linked lignosulfonate bio-adsorbent (CLLS) was described. CLLS was characterized by FTIR, SEM/EDS and TGA. The influences of pH, temperature, contact time and initial MB and Pb²⁺ concentrations on the adsorption performance were investigated. The results demonstrated a g ...
DOI:
10.1080/09593330.2018.1544666