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1. 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

2. A review of boron removal from aqueous solution using carbon-based materials: An assessment of health risks

Author:
A. Yagmur Goren; Yasar K. Recepoglu; Ahmet Karagunduz; Alireza Khataee; Yeojoon Yoon
Source:
Chemosphere 2022 v.293 pp. 133587
ISSN:
0045-6535
Subject:
activated carbon; adsorbents; adsorption; aqueous solutions; boron; carbon nanotubes; graphene oxide; risk; surface area; tartaric acid
Abstract:
... Carbon-based compounds have gained attention of researchers for use in boron removal due to their properties, which make them a viable and low cost adsorbent with a high availability, as well as environmental friendliness and high removal efficiency. The removal of boron utilizing carbon-based materials, including activated carbon (AC), graphene oxide (GO), and carbon nanotubes (CNTs), is extensiv ...
DOI:
10.1016/j.chemosphere.2022.133587

3. A review on the adsorption mechanism of different organic contaminants by covalent organic framework (COF) from the aquatic environment

Author:
Eman Abdelnasser Gendy; Daniel Temitayo Oyekunle; Jerosha Ifthikar; Ali Jawad; Zhuqi Chen
Source:
Environmental science and pollution research 2022 v.29 no.22 pp. 32566-32593
ISSN:
0944-1344
Subject:
adsorbents; adsorption; aquatic environment; aqueous solutions; chemical structure; pollution; porosity; research; spectroscopy; surface area
Abstract:
... Recently, covalent organic frameworks (COFs) have gained significant attention as a promising material for the elimination of various organic pollutants due to their distinctive characteristics such as high surface area, adjustable porosity, high removal efficiency, and recyclability. The efficiency and selectivity of COFs depend on the decorated functional group and the pore size of the chemical ...
DOI:
10.1007/s11356-022-18726-w

4. A review on the management of arsenic-laden spent adsorbent: Insights of global practices, process criticality, and sustainable solutions

Author:
Manoj Kumar Yadav; Duduku Saidulu; Partha Sarathi Ghosal; Abhijit Mukherjee; Ashok Kumar Gupta
Source:
Environmental technology & innovation 2022 v.27 pp. 102500
ISSN:
2352-1864
Subject:
adsorbents; adsorption; aqueous solutions; arsenic; construction materials; cost effectiveness; economic valuation; ecotoxicology; environmental technology; landfills; pollution; remediation; solidification; toxicity
Abstract:
... Adsorption is a widely used arsenic remediation technique due to its high efficacy, economic value, ease in operation and maintenance, and other multiple factors. However, the proper management of arsenic-laden spent media is one of the major challenges, which affects the sustainability of this treatment technique in field-scale implementations. This review summarizes the various adsorbents and th ...
DOI:
10.1016/j.eti.2022.102500

5. A review on three-dimensional cellulose-based aerogels for the removal of heavy metals from water

Author:
Hina Iqbal Syeda; Pow-Seng Yap
Source:
Science of the total environment 2022 v.807 pp. 150606
ISSN:
0048-9697
Subject:
adsorbents; adsorption; aerogels; aquatic ecosystems; aqueous solutions; chitosan; cost analysis; cost effectiveness; electrostatic interactions; environment; heavy metals; industrialization; ion exchange; kinetics; models; pH; sorption isotherms; temperature; thiols
Abstract:
... Contamination of the aquatic ecosystem by heavy metals is a growing concern that has yet to be addressed with an efficient, cost-effective and environmentally-friendly solution. Heavy metals occur naturally in the earth's crust and also result from anthropogenic activities. Due to the rapid increase in industrialization, there is an increase in consumer demands across various industries such as me ...
DOI:
10.1016/j.scitotenv.2021.150606

6. Adams-Bohart, Yoon-Nelson, and Thomas modeling of the fix-bed continuous column adsorption of amoxicillin onto silver nanoparticle-maize leaf composite

Author:
Odunola B. Omitola; Matthew N. Abonyi; Kovo G. Akpomie; Folasegun A. Dawodu
Source:
Applied water science 2022 v.12 no.5 pp. 94
ISSN:
2190-5487
Subject:
adsorbents; adsorption; amoxicillin; aqueous solutions; color; energy-dispersive X-ray analysis; leaves; models; nanocomposites; nanosilver; porosity; silver; water
Abstract:
... This study focused on the use of a fix-bed column in the removal of amoxicillin from an aqueous solution by the application of silver nano-based adsorbents. The silver nanoparticle and nanocomposite were produced by a green synthetic approach. Column adsorption was performed at a flow rate of 5.88 mL/min, bed height of (5.0–7.0 cm), and amoxicillin concentration of 20–40 mg/L. Adsorption data were ...
DOI:
10.1007/s13201-022-01624-4

7. Adenosine-functionalized UiO-66-NH2 to efficiently remove Pb(II) and Cr(VI) from aqueous solution: Thermodynamics, kinetics and isothermal adsorption

Author:
Hao Wang; Shuai Wang; Shixing Wang; Jiali Tang; Yingbi Chen; Libo Zhang
Source:
Journal of hazardous materials 2022 v.425 pp. 127771
ISSN:
0304-3894
Subject:
Gibbs free energy; adsorbents; adsorption; aqueous solutions; endothermy; heat production; wastewater
Abstract:
... A new zirconium-based adsorption material (UiO-66-AMP) was prepared by modifying UiO-66-NH₂ with 5-adenosine to effectively remove Pb(II) and Cr(VI) from wastewater. The SEM, EDS, XRS and FT-IR characterization confirmed the successful synthesis of UiO-66-AMP. We conducted a sets of experiments to test the adsorption effectiveness of UiO-66-AMP for Pb(II) and Cr(VI). The maximum adsorption capacit ...
DOI:
10.1016/j.jhazmat.2021.127771

8. Adsorbent grafted on cellulose by in situ synthesis of EDTA-like groups and its properties of metal ion adsorption from aqueous solution

Author:
Tao Hu; Xiaoli Hu; Cheng Tang; Dan Liu
Source:
Cellulose 2022 v.29 no.2 pp. 941-952
ISSN:
0969-0239
Subject:
acetic acid; adsorbents; adsorption; aqueous solutions; carboxymethylcellulose; heavy metals; infrared spectroscopy; nuclear magnetic resonance spectroscopy
Abstract:
... This paper describes the synthesis of a novel chelating material derived from cellulose, and its heavy metal ion adsorption properties from aqueous solution. The first section of this paper reports the chemical grafting of cellulose, that amino acetic acid groups were grafted onto the cellulose by in situ synthesis, a novel yet unreported modified cellulose derivative N,N-(dicarboxymethylaminoethy ...
DOI:
10.1007/s10570-021-04324-5

9. Adsorption and removal of crystal violet dye from aqueous solution by modified rice husk

Author:
Puspa Lal Homagai; Rachana Poudel; Sujan Poudel; Ajaya Bhattarai
Source:
Heliyon 2022 v.8 no.4 pp. e09261
ISSN:
2405-8440
Subject:
adsorbents; adsorption; aqueous solutions; gentian violet; models; pH; rice hulls
Abstract:
... An approach to removing crystal violet (CV) dye from aqueous solutions was investigated by introducing a xanthate group on charred rice husk. The newly prepared charred rice husk (CRH) and xanthated rice husk (XRH) were characterized by XRD, SEM, FTIR, and elemental analysis. A batch technique was used to adsorb CV dye in aqueous suspensions. Different adsorbent quantities, concentrations, pH, and ...
DOI:
10.1016/j.heliyon.2022.e09261

10. Adsorption efficiency of date palm based activated carbon-alginate membrane for methylene blue

Author:
Wishal Zia Durrani; Asma Nasrullah; Amir Sada Khan; Taghreed M. Fagieh; Esraa M. Bakhsh; Kalsoom Akhtar; Sher Bahadar Khan; Israf Ud Din; Muhammad Azam Khan; Awais Bokhari
Source:
Chemosphere 2022 pp. 134793
ISSN:
0045-6535
Subject:
Phoenix dactylifera; adsorbents; adsorption; alginates; aqueous solutions; boric acid; heat production; kinetics; methylene blue; pH; sorption isotherms; temperature
Abstract:
... In the current study, activated carbon (AC) was prepared from date palm using single step activation using boric acid as an activating agent. The synthesized AC was incorporated with alginate (AC-alginate (AC-alg)) to prepare membrane for adsorption of methylene blue (MB) in batch adsorption study. The prepared membrane was characterized using different types of analytical techniques such as FTIR, ...
DOI:
10.1016/j.chemosphere.2022.134793

11. Adsorption kinetics and isotherms study of 2,4-dichlorophenoxyacetic acid by 3dimensional/graphene oxide/magnetic from aquatic solutions

Author:
Alireza Hajighasemkhan; Lobat Taghavi; Elham Moniri; Amir Hessam Hassani; Homayon Ahmad Panahi
Source:
International journal of environmental analytical chemistry 2022 v.102 no.5 pp. 1171-1191
ISSN:
1029-0397
Subject:
2,4-D; adsorbents; adsorption; analytical chemistry; aqueous solutions; industry; magnetism; models; pH; polymers; temperature; wastewater
Abstract:
... 3D polymer nanomagnetic (3D/GO/Fe₃O₄) adsorbent was fabricated and used for determining removal of 2,4-D from an aqueous solution. The adsorbent was characterised by FTIR, XRD, FE-SEM, TEM, VSM, and TGA. The influence of pH, contact time, 2,4-D initial concentration, temperature and adsorbent dosage in adsorption efficiency was examined. Maximum removal (100%) was observed at the optimum adsorptio ...
DOI:
10.1080/03067319.2020.1734194

12. Adsorption modeling, thermodynamics, and DFT simulation of tetracycline onto mesoporous and high-surface-area NaOH-activated macroalgae carbon

Author:
Manman Wei; Fatma Marrakchi; Chuan Yuan; Xiaoxue Cheng; Ding Jiang; Fatemeh Fazeli Zafar; Yanxia Fu; Shuang Wang
Source:
Journal of hazardous materials 2022 v.425 pp. 127887
ISSN:
0304-3894
Subject:
Ulva; activated carbon; adsorbents; adsorption; aqueous solutions; density functional theory; endothermy; hydrogen; macroalgae; models; pH; porosity; porous media; raw materials; sorption isotherms; surface area; temperature; tetracycline; thermodynamics
Abstract:
... Activated carbon (ENAC) was prepared by NaOH activation, using macroalgae (Enteromorpha clathrate) as raw material. The prepared activated carbon has a large surface area (1238.491 m² g⁻¹) and its total pore volume and average pore size are 0.6823 cm³g⁻¹ and 2.2038 nm, respectively. The ENAC was characterized by SEM, FTIR, BET and XPS. The effects of contact time (0–960 min), initial tetracycline ...
DOI:
10.1016/j.jhazmat.2021.127887

13. Adsorption of As (V) ions from aqueous solution by carboxymethyl cellulose incorporated layered double hydroxide/reduced graphene oxide nanocomposites: Isotherm and kinetic studies

Author:
V. Nithya Priya; M. Rajkumar; J. Mobika; S.P. Linto Sibi
Source:
Environmental technology & innovation 2022 v.26 pp. 102268
ISSN:
2352-1864
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; arsenates; carboxymethylcellulose; environmental technology; graphene oxide; models; nanocomposites; pH; sorption isotherms; surface area; transmission electron microscopy; wastewater
Abstract:
... Efficient nanocomposite adsorbents were synthesized based on carboxymethyl cellulose (CE) incorporated Fe–Al layered double hydroxide/reduced graphene oxide (FAH-rGO/CE) for the adsorption of Arsenate (As (V)) ions in wastewater. Synthesized products were characterized by XRD (X-ray diffraction), FESEM (Field Emission Scanning Electron Microscopy), HRTEM (High Resolution Transmission Electron Micr ...
DOI:
10.1016/j.eti.2022.102268

14. Adsorption of bisphenol A from aqueous solution onto organoclay: Experimental design, kinetic, equilibrium and thermodynamic study

Author:
M.B. de Farias; M.G.C. Silva; M.G.A. Vieira
Source:
Powder technology 2022 v.395 pp. 695-707
ISSN:
0032-5910
Subject:
adsorbents; adsorption; aqueous solutions; bisphenol A; clay; desorption; endocrine-disrupting chemicals; endothermy; experimental design; mass transfer; models; particle size; plasticizers; remediation; sodium hydroxide; sorption isotherms; technology; thermodynamics
Abstract:
... Bisphenol-A (BPA) is a common plasticizer that has been considered a chemical of concern due to its endocrine disruption potential. In this sense, this paper aimed to investigate the adsorption of this contaminant onto commercial organophilic clay named Spectrogel® as means of water remediation. For this, characterization techniques were carried out before and post-process to identify any major al ...
DOI:
10.1016/j.powtec.2021.10.021

15. Adsorption of cationic dyes onto carrageenan and itaconic acid-based superabsorbent hydrogel: Synthesis, characterization and isotherm analysis

Author:
Shweta Sharma; Gaurav Sharma; Amit Kumar; Tahani Saad AlGarni; Mu. Naushad; Zeid A. ALOthman; Florian J. Stadler
Source:
Journal of hazardous materials 2022 v.421 pp. 126729
ISSN:
0304-3894
Subject:
absorbents; adsorbents; adsorption; aqueous solutions; carrageenan; gentian violet; hydrogels; methylene blue; polymerization; sorption isotherms; temperature; thermodynamics
Abstract:
... Polysaccharide-based hydrogels offer a great overlook for environmental applications and help in the elimination of various noxious pollutants from the water system. Novel carrageenan and itaconic acid-based superadsorbent hydrogel having appreciable swelling properties and adsorption capacity towards Methylene blue (MB), Crystal violet (CV), and Methyl Red (MR) was synthesized by suspension polym ...
DOI:
10.1016/j.jhazmat.2021.126729

16. Adsorption of chromium, copper, lead and mercury ions from aqueous solution using bio and nano adsorbents: A review of recent trends in the application of AC, BC, nZVI and MXene

Author:
Hifsa Khurshid; Muhammad Raza Ul Mustafa; Mohamed Hasnain Isa
Source:
Environmental research 2022 v.212 pp. 113138
ISSN:
0013-9351
Subject:
activated carbon; adsorbents; adsorption; aqueous solutions; biochar; chromium; copper; cost analysis; iron; lead; mercury; pH; research; surface area; wastewater
Abstract:
... Recent trends in adsorption of Chromium (Cr), Copper (Cu), Lead (Pb) and Mercury (Hg) in wastewater using (i) carbonaceous materials including activated carbon (AC) and biochar (BC), and (ii) nanomaterials including nano zero-valent iron (nZVI) and MXenes have been discussed in this paper. It has been found that adsorption capacity depends largely on the adsorbent modification technique, initial p ...
DOI:
10.1016/j.envres.2022.113138

17. Adsorption of ciprofloxacin from aqueous solution using surface improved tamarind shell as an economical and effective adsorbent

Author:
Magesh N.; Annam Renita A.; Senthil Kumar P.; Stanley Abraham L.
Source:
International journal of phytoremediation 2022 v.24 no.3 pp. 224-234
ISSN:
1549-7879
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; antibiotics; aquatic environment; aqueous solutions; biomass; biosorbents; ciprofloxacin; humans; hydrochloric acid; kinetics; lifestyle; models; pH; phytoremediation; pollutants; sorption isotherms; surface water; tamarinds; temperature; wastewater; zinc chloride
Abstract:
... Antibiotics in water bodies are emerging as an alarming new pollutant because of its persistent and recombinant nature. In recent period of human lifestyle, pharmaceutical products play a vital role in many perspectives. Due to this unpredictable usage of products, the unreacted components release into waterbodies in trace quantities. Eventhough these trace quantities initiate a crisis of developi ...
DOI:
10.1080/15226514.2021.1932730

18. Adsorption of divalent copper from aqueous solution by magnesium chloride co-doped Cicer arietinum husk biochar: Isotherm, kinetics, thermodynamic studies and response surface methodology

Author:
Runit Isaac; Shaziya Siddiqui
Source:
Bioresource technology reports 2022 v.18 pp. 101004
ISSN:
2589-014X
Subject:
Cicer arietinum; adsorbents; adsorption; aqueous solutions; biochar; copper; desorption; endothermy; heavy metals; hulls; hydrochloric acid; kinetics; leather; magnesium; magnesium chloride; magnesium oxide; pH; response surface methodology; sorption isotherms; technology; thermodynamics
Abstract:
... Copper is the most quintessential type of heavy metal found in the water bodies due to anthropogenic activities such as farming, leather industries, urban effluents etc. To remove pollutant such as Copper, Cicer husk was collected, pre-treated with Magnesium Chloride and was pyrolyzed to obtained Magnesium Oxide immobilized biochar known as Magnesium Cicer Biochar. The adsorbent showed % removal o ...
DOI:
10.1016/j.biteb.2022.101004

19. Adsorption of dyes methyl violet and malachite green from aqueous solution on multi-step modified rice husk powder in single and binary systems: Characterization, adsorption behavior and physical interpretations

Author:
Xun You; Rui Zhou; Yinxia Zhu; Dingdong Bu; Dai Cheng
Source:
Journal of hazardous materials 2022 v.430 pp. 128445
ISSN:
0304-3894
Subject:
adsorbents; adsorption; aqueous solutions; gentian violet; kinetics; malachite green; models; rice hulls; wastewater
Abstract:
... A novel modified rice husk (MRH) has been prepared for removing cationic dyes in both single system and binary system. SEM-EDS, FT-IR, XRD and XPS were used to characterize the physical and chemical properties of MRH. It showed that the maximum adsorption capacity of MRH for methyl violet (MV) and malachite green (MG) in single system was 154.49 and 996.97 mg g⁻¹, while in binary system was 530.94 ...
DOI:
10.1016/j.jhazmat.2022.128445

20. Adsorption of norfloxacin from aqueous solution on biochar derived from spent coffee ground: Master variables and response surface method optimized adsorption process

Author:
Van-Truc Nguyen; Thi-Dieu-Hien Vo; Thanh-Binh Nguyen; Nguyen Duy Dat; Bui Trung Huu; Xuan-Cuong Nguyen; Thanh Tran; Thi-Ngoc-Chau Le; Thi-Giang-Huong Duong; Manh-Ha Bui; Cheng-Di Dong; Xuan-Thanh Bui
Source:
Chemosphere 2022 v.288 pp. 132577
ISSN:
0045-6535
Subject:
Salix; absorption; adsorbents; adsorption; aqueous solutions; biochar; cauliflower; corn; microparticles; norfloxacin; pH; potatoes; response surface methodology; solid wastes; sorption isotherms; surface area; thermal stability; wheat straw
Abstract:
... In this study, biochar derived from spent coffee grounds (SCGB) was used to adsorb norfloxacin (NOR) in water. The biochar properties were interpreted by analysis of the specific surface area, morphology, structure, thermal stability, and functional groups. The impacts of pH, NOR, and ion's present on SCGB performance were examined. The NOR adsorption mode of SCGB is best suited to the Langmuir mo ...
DOI:
10.1016/j.chemosphere.2021.132577

21. Adsorption of organic and inorganic arsenic from aqueous solution: Optimization, characterization and performance of Fe–Mn–Zr ternary magnetic sorbent

Author:
Shuai-Wen Zou; Kok Yuen Koh; Zhihao Chen; Yu-Yang Wang; J. Paul Chen; Yu-Ming Zheng
Source:
Chemosphere 2022 v.288 pp. 132634
ISSN:
0045-6535
Subject:
Taguchi method; adsorbents; adsorption; aqueous solutions; arsenates; arsenic; groundwater; humic acids; industrial wastewater; ion exchange; magnetism; pH; phosphates; pollutants; risk; silicates; sorption isotherms; toxicity
Abstract:
... Arsenic is a highly toxic pollutant and exists in inorganic and organic forms in groundwater and industrial wastewater. It is of great importance to reduce the arsenic content to lower levels in the water (e.g., <10 ppb for drinking) in order to minimize risk to humans. In this study, a Fe–Mn–Zr ternary magnetic sorbent was fabricated via precipitation for removal of inorganic and organic arsenate ...
DOI:
10.1016/j.chemosphere.2021.132634

22. Adsorption of uranium by chitosan/Chlorella pyrenoidosa composite adsorbent bearing phosphate ligand

Author:
Wenjie Liu; Qingliang Wang; Hongqiang Wang; Qi Xin; Wei Hou; Eming Hu; Zhiwu Lei
Source:
Chemosphere 2022 v.287 pp. 132193
ISSN:
0045-6535
Subject:
Chlorella pyrenoidosa; adsorbents; adsorption; aqueous solutions; chitosan; desorption; ligands; metallurgy; pH; phosphates; uranium; wastewater
Abstract:
... In order to remove and recover uranium from acidic uranium-bearing wastewater in uranium mining and metallurgy. Herein, a novel chitosan/Chlorella pyrenoidosa composite adsorbent bearing phosphate ligand (CSP/CP) was designed and synthesized, demonstrating a high uranium adsorption capacity at a pH of 5 and excellent selectivity in an aqueous solution with eight coexisting ions. The CSP/CP exhibit ...
DOI:
10.1016/j.chemosphere.2021.132193

23. Adsorptive behavior of L-Arginine-silica micro-particles against arsenic and fluoride in aqueous solution

Author:
Anushree Srivastava; Hemen Dave; Bablu Prasad; Abhishek Kumar; Deepak M. Maurya; Madhu Kumari; Kumar Suranjit Prasad
Source:
Environmental nanotechnology, monitoring & management 2022 v.17 pp. 100636
ISSN:
2215-1532
Subject:
administrative management; adsorbents; adsorption; aqueous solutions; arsenates; arsenic; arsenites; drinking water; endothermy; entropy; fluorides; kinetics; liquid-solid interface; microparticles; pH; silica; temperature
Abstract:
... The occurrence of high concentrations of arsenic and fluoride in drinking water has become a serious environmental issue. The present study reports a novel adsorbent, L-Arg functionalized silica micro-particles and its effectiveness for the simultaneous removal of arsenite, arsenate, and fluoride ions in aqueous solution. Batch adsorption experiments were performed to evaluate the efficiency of re ...
DOI:
10.1016/j.enmm.2021.100636

24. Adsorptive potential of iron oxide based nanocomposite for the sequestration of Congo red from aqueous solution

Author:
Gopalakrishnan Sarojini; Samikannu Venkatesh Babu; Manivasagan Rajasimman
Source:
Chemosphere 2022 v.287 pp. 132371
ISSN:
0045-6535
Subject:
adsorbents; adsorption; aqueous solutions; desorption; dyes; endothermy; iron oxides; models; nanocomposites; pH; sorption isotherms; temperature; thermodynamics
Abstract:
... The ability of polypyrrole-Iron oxide-seaweed nanocomposite has been tested for the removal of congo red from aqueous solution. The characteristics of nanocomposite after adsorption of Congo red (CR) have been analyzed. FTIR results authorized the involvement of various functional groups in the adsorption of CR. The change in morphology of nanocomposite was analyzed using scanning electron microsc ...
DOI:
10.1016/j.chemosphere.2021.132371

25. Adsorptive removal of sulfonamides, tetracyclines and quinolones from wastewater and water using carbon-based materials: Recent developments and future directions

Author:
Basanta Kumar Biswal; Rajasekhar Balasubramanian
Source:
Journal of cleaner production 2022 v.349 pp. 131421
ISSN:
0959-6526
Subject:
adsorbents; adsorption; aquatic environment; aqueous solutions; biochar; cost analysis; endothermy; hydrochars; hydrogen bonding; metabolites; quinolones; sorption isotherms; thermodynamics; urine; wastewater
Abstract:
... Antibiotics are widely used for treatment of diseases caused by bacteria. They reach the aquatic environment through urine and excreta. The dominant antibiotics that are commonly detected in aquatic environments include tetracyclines, sulfonamides and quinolones. This review critically analyzes the effectiveness of carbon-based materials (biochar and hydrochar) for removal of antibiotics from wast ...
DOI:
10.1016/j.jclepro.2022.131421

26. Adsorptive removal of sulfosalicylic acid from aqueous medium by iron(III)-loaded magnetic chitosan/graphene oxide

Author:
Mingyu Liu; Qiong Liu; Zhongyang Zang; Runping Han
Source:
Journal of colloid and interface science 2022 v.606 pp. 1249-1260
ISSN:
0021-9797
Subject:
X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; chitosan; desorption; graphene oxide; heat production; hydrogen; iron; kinetics; magnetism; microstructure; sorption isotherms
Abstract:
... In this study, an iron(III)-loaded magnetic chitosan/graphene oxide composite (Fe-MCG) was synthesized and applied for the adsorptive removal of sulfosalicylic acid (SSA) in aqueous solution. The results obtained from the application of various characterization techniques such as scanning electron microscopy (SEM), vibrating-sample magnetometry (VSM), and X-ray photoelectron spectroscopy (XPS) pro ...
DOI:
10.1016/j.jcis.2021.08.097

27. Amidoxime modified polymers of intrinsic microporosity/alginate composite hydrogel beads for efficient adsorption of cationic dyes from aqueous solution

Author:
Shuainan Xu; Yehao Jin; Rui Li; Meixia Shan; Yatao Zhang
Source:
Journal of colloid and interface science 2022 v.607 pp. 890-899
ISSN:
0021-9797
Subject:
adsorbents; adsorption; alginates; aqueous solutions; desorption; endothermy; hydrogels; malachite green; sorption isotherms; thermodynamics
Abstract:
... Polymers of intrinsic microporosity (PIM-1) has demonstrated great potential in adsorption and separation fields. In this study, PIM-1 was structured into an applicable and efficient adsorbent using a facile way. PIM-1 was first modified by amidoxime, and then the amidoxime modified PIM-1 (AOPIM-1) was mingled into alginate (Alg) hydrogel to obtain composite hydrogel beads. The AOPIM-1/Alg composi ...
DOI:
10.1016/j.jcis.2021.08.157

28. Antimony removal from water by pine bark tannin resin: Batch and fixed-bed adsorption

Author:
Hugo Bacelo; Sílvia C.R. Santos; Andreia Ribeiro; Rui A.R. Boaventura; Cidália M.S. Botelho
Source:
Journal of environmental management 2022 v.302 pp. 114100
ISSN:
0301-4797
Subject:
adsorbents; adsorption; antimony; aqueous solutions; bark; environmental management; groundwater contamination; pH; particle size; sulfates; toxicology
Abstract:
... Antimony is present in water by natural causes but is also mobilized in the environment by anthropogenic activities, particularly mining. Considering its toxicological behavior, antimony removal from contaminated groundwater and mine effluents is necessary. In this work, Sb(III) and Sb(V) removal from aqueous solution was studied using a resin prepared from pine bark tannins. Subsequent iron loadi ...
DOI:
10.1016/j.jenvman.2021.114100

29. Application of low-cost material for adsorption of dye from aqueous solution

Author:
Asghar Hamzezadeh; Yousef Rashtbari; Shirin Afshin; Maryam Morovati; Mehdi Vosoughi
Source:
International journal of environmental analytical chemistry 2022 v.102 no.1 pp. 254-269
ISSN:
1029-0397
Subject:
Fourier transform infrared spectroscopy; Salvia; absorbents; adsorbents; adsorption; analytical chemistry; aqueous solutions; dyes; pH; sorption isotherms; wastewater
Abstract:
... Cationic dyes are one of the aromatic compounds that cause major environmental problems. The adsorption process has attracted a lot of attention in recent years. In this study, the seeds were used as a low-cost adsorbent for the removal of cationic Blue 41 dye from aquatic environments. The studied parameters included the effect of adsorbent dosage, pH of the solution, contact time, and the initia ...
DOI:
10.1080/03067319.2020.1720011

30. Arsenic(iii) removal from aqueous solution using TiO₂-loaded biochar prepared by waste Chinese traditional medicine dregs

Author:
Yan Yang; Ruixue Zhang; Shiwan Chen; Jian Zhu; Pan Wu; Jiayan Huang; Shihua Qi
Source:
RSC advances 2022 v.12 no.13 pp. 7720-7734
ISSN:
2046-2069
Subject:
Gibbs free energy; Oriental traditional medicine; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; arsenic; biochar; biosorbents; free radicals; models; oxidation; pH; photocatalysis; remediation; titanium dioxide
Abstract:
... Oxidation of As(iii) to As(v) is an effective way to improve the performance of most arsenic removal technologies. In this study, a new alternative biosorbent, TiO₂-loaded biochar prepared by waste Chinese traditional medicine dregs (TBC) was applied in remediation for As(iii) from aqueous solution. Compared with unmodified biochar, the specific surface areas and total pore volumes of TBC increase ...
DOI:
10.1039/d1ra08941b

31. 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

32. Au/Boron organic frameworks for efficient removal and degradation of azo dye pollutants

Author:
Ziqiong Yang; Xun Liu; Shiying Xia; Qiong Ding; Haiyan Liu; Zhengxi Wang; Long Zhang; Haibo Zhang
Source:
Colloids and surfaces 2022 v.646 pp. 128884
ISSN:
0927-7757
Subject:
adsorbents; adsorption; aqueous solutions; azo dyes; boron; methyl orange; pollution; sodium borohydride; thermodynamics; wastewater; wastewater treatment
Abstract:
... The discharges from urban industries and domestic sewages have caused severe environmental pollution problems. Specifically, dyes are among the pollution sources that are relatively difficult to treat. In this study, Au/CB6-BOFs (BOFs namely closo-dodecaborate-based supramolecular organic frameworks) were successfully synthesized using a simple method. The sample was used as adsorbent and degradat ...
DOI:
10.1016/j.colsurfa.2022.128884

33. Back-propagation neural network: Box–Behnken design modelling for optimization of copper adsorption on orange zest biochar

Author:
S. Sivamani; B. S. Naveen Prasad; K. Nithya; N. Sivarajasekar; A. Hosseini-Bandegharaei
Source:
International journal of environmental science and technology 2022 v.19 no.5 pp. 4321-4336
ISSN:
1735-1472
Subject:
adsorbents; adsorption; aqueous solutions; biochar; chlorides; copper; environmental science; experimental design; kinetics; sorption isotherms; technology; temperature
Abstract:
... Heavy metals adsorption by adsorbents prepared from natural materials is a low-cost effective method for their removal from aqueous environments. This study aims to assess the applicability of orange zest biochar to adsorb divalent copper (cupric chloride) from its aqueous solution by maximizing the adsorption capacity using feed-forward back-propagation neural network (FFBPNN)–Box–Behnken design ...
DOI:
10.1007/s13762-021-03411-1

34. Bentonite-based sodium alginate/ dextrin cross-linked poly (acrylic acid) hydrogel nanohybrids for facile removal of paraquat herbicide from aqueous solutions

Author:
Sourbh Thakur; Ankit Verma; Pankaj Raizada; Oguzhan Gunduz; Dawid Janas; Walaa F. Alsanie; Fabrizio Scarpa; Vijay Kumar Thakur
Source:
Chemosphere 2022 v.291 pp. 133002
ISSN:
0045-6535
Subject:
X-ray diffraction; acrylic acid; adsorbents; adsorption; aqueous solutions; bentonite; crosslinking; dextrins; heat production; hydrogels; nanohybrids; paraquat; sodium; sodium alginate; sorption isotherms; thermogravimetry; toxicity; wastewater
Abstract:
... Removal of hazardous herbicides from the aqueous solution is critical for overcoming health-related issues across the wider population. In the current work, we have prepared sodium alginate (SAlg), dextrin, and acrylic acid (AA) based cross-linked hydrogels, composed of bentonite incorporated in the biocompatible hydrogel matrix. This hydrogel composite can remove highly toxic herbicide paraquat ( ...
DOI:
10.1016/j.chemosphere.2021.133002

35. Biosorption of V(V) onto Lantana camara biochar modified by H3PO4: Characteristics, mechanism, and regenerative capacity

Author:
Kexin Chen; Danni Ma; Haoyang Yu; Shan Zhang; Barnabas C. Seyler; Zimo Chai; Shuming Peng
Source:
Chemosphere 2022 v.291 pp. 132721
ISSN:
0045-6535
Subject:
Lantana camara; adsorbents; adsorption; aqueous solutions; biochar; biosorption; electrostatic interactions; invasive species; pH; pyrolysis; redox reactions; sorption isotherms; vanadium
Abstract:
... Biochar has been widely recognized as an environmentally efficient adsorbent for removing heavy metals. However, considering the weak adsorption performance of the original biochar to the oxygen-containing anion, the adsorption of vanadium by biochar has rarely been investigated. This study proposes that H₃PO₄ activated biochar made from an invasive plant species growing near mines is a novel mate ...
DOI:
10.1016/j.chemosphere.2021.132721

36. Biosorption of lead ions from aqueous solution by Clostridium tyrobutyricum immobilized in macroporous Ca‐alginate‐lignin beads

Author:
Wenxiu Zheng; Qianru Zhao; Matthew Jay Malkmes; Ge Gao; Jiaqi He; Lei Zheng; Ling Jiang
Source:
Journal of applied microbiology 2022 v.132 no.3 pp. 2080-2092
ISSN:
1364-5072
Subject:
Clostridium tyrobutyricum; adsorbents; adsorption; aqueous solutions; biosorption; kinetics; lead; microbiology; pH; porous media; sorption isotherms
Abstract:
... AIMS: The adsorption of lead ions from aqueous solution by macroporous Ca‐alginate‐lignin (MCAL) beads immobilized with Clostridium tyrobutyricum and free strains was evaluated. METHODS AND RESULTS: The effects of different factors including pH, adsorption time, adsorbent dosage and initial concentration of lead ions were explored. Different characterization methods were used to evaluate the adsor ...
DOI:
10.1111/jam.15387

37. Bisphenol A Adsorption from Aqueous Solution Using Graphene Oxide-Alginate Beads

Author:
Nurul Syazana Fuzil; Nur Hidayati Othman; Nur Ain Shazwani Roslee Ab. Jamal; Ana Najwa Mustapa; Nur Hashimah Alias; ‘Aqilah Dollah; Nik Raikhan Nik Him; Fauziah Marpani
Source:
Journal of polymers and the environment 2022 v.30 no.2 pp. 597-612
ISSN:
1566-2543
Subject:
adsorbents; adsorption; aerogels; alginates; aqueous solutions; bisphenol A; calcium chloride; crystal structure; electrostatic interactions; environment; extrusion; graphene; models; pH; sorption isotherms
Abstract:
... In this study, the potential of graphene oxide-alginate beads (GO-AB) as an adsorbent for bisphenol A (BPA) removal from aqueous solution was investigated. GO was first prepared via modified Hummers’ techniques and an aerogel alginate bead with embedded GO was prepared using an extrusion dripping method, where calcium chloride was utilized as a curing agent. The physicochemical characteristics of ...
DOI:
10.1007/s10924-021-02226-y

38. Capacity and Modeling of Acid Blue 113 Dye Adsorption onto Chitosan Magnetized by Fe2O3 Nanoparticles

Author:
Tariq J. Al-Musawi; Nezamaddin Mengelizadeh; Orabi Al Rawi; Davoud Balarak
Source:
Journal of polymers and the environment 2022 v.30 no.1 pp. 344-359
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; atomic force microscopy; chi-square distribution; chitosan; dyes; endothermy; energy-dispersive X-ray analysis; environmental factors; ferric oxide; magnetite; pH; polymers; shelf life; temperature; thermodynamics; thermogravimetry; transmission electron microscopy
Abstract:
... A chitosan polymer was magnetized by coating with magnetite Fe₂O₃ nanoparticles, and the resultant material (C-Fe₂O₃) was first characterized through scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy, transmission electron microscopy, atomic force microscopy, thermogravimetric, X-ray diffractometry, Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller, and ...
DOI:
10.1007/s10924-021-02200-8

39. Carbon dioxide activated biochar-clay mineral composite efficiently removes ciprofloxacin from contaminated water - Reveals an incubation study

Author:
Muhammad Arif; Guijian Liu; Muhammad Zia ur Rehman; Balal Yousaf; Rafay Ahmed; Md Manik Mian; Aniqa Ashraf; Mehr Ahmed Mujtaba Munir; Muhammad Saqib Rashid; Asif Naeem
Source:
Journal of cleaner production 2022 v.332 pp. 130079
ISSN:
0959-6526
Subject:
adsorbents; adsorption; aqueous solutions; biochar; carbon dioxide; cation exchange; ciprofloxacin; clay; electrostatic interactions; endothermy; humans; pH; pyrolysis; risk; temperature; water pollution
Abstract:
... Ciprofloxacin, a second-generation synthetic fluoroquinolone derivative widely used in human and veterinary medicines, has the potential to pose a serious risk to aquatic organisms and humans. The current research investigated the removal of ciprofloxacin using biochar treated with clay mineral and subsequently activated with carbon dioxide (CO₂) produced at two different pyrolysis temperatures (3 ...
DOI:
10.1016/j.jclepro.2021.130079

40. Chitin/egg shell membrane@Fe₃O₄ nanocomposite hydrogel for efficient removal of Pb²⁺ from aqueous solution

Author:
Baoquan Jia; Dingna Liu; Chengyu Niu; Qili Yu; Jie Ren; Qingye Liu; Haiqiang Wang
Source:
RSC advances 2022 v.12 no.7 pp. 4417-4427
ISSN:
2046-2069
Subject:
absorbents; adsorbents; adsorption; aqueous solutions; chemical reactions; chitin; egg shell; egg shell membranes; endothermy; epichlorohydrins; equations; hydrogels; nanocomposites; pH; polymers; sorption isotherms; temperature; thermodynamics; urea; wastes; water pollution
Abstract:
... The development of adsorbents by using the byproducts or waste from large-scale industrial and agricultural production is of great significance, and is considered to be an economic and efficient strategy to remove the heavy metals from polluted water. In this work, a novel chitin/EM@Fe₃O₄ nanocomposite hydrogel was obtained from a NaOH/urea aqueous system, where the proteins of egg shell membrane ...
DOI:
10.1039/d1ra08744d

41. Ciprofloxacin Removal from Simulated Wastewater Through a Combined Process of Adsorption and Oxidation Processes Using Fe/C Adsorbent

Author:
Aulia Septiani Mutia; Teguh Ariyanto; Imam Prasetyo
Source:
Water, air, and soil pollution 2022 v.233 no.4 pp. 146
ISSN:
0049-6979
Subject:
adsorbents; adsorption; air; aqueous solutions; carbon; carbonization; catalytic activity; ciprofloxacin; oxidation; ozonation; ozone; polymerization; soil pollution; sorption isotherms; temperature; wastewater; water
Abstract:
... This paper presents a novel approach to remove ciprofloxacin from an aqueous solution using Fe₃O₄/C material by adsorption and then followed by a degradation process using several advanced oxidation technologies, i.e., heterogeneous Fenton and catalytic ozonation. Porous carbon material was synthesized through several stages, i.e., polymerization of resorcinol-formaldehyde and carbonization (800 ° ...
DOI:
10.1007/s11270-022-05618-5

42. Co-Cu oxide nano-flake adsorbent for tetracycline removal from aqueous solution

Author:
Seyed Mohammad Mahdi Nouri; Amir Reza Khadem; Seyyed Alireza Hosseini; Seyedmostafa Nouri
Source:
Environmental science and pollution research 2022 v.29 no.2 pp. 2965-2973
ISSN:
0944-1344
Subject:
adsorbents; adsorption; aqueous solutions; coprecipitation; crystal structure; kinetics; models; pH; pollution; research; sorption isotherms; tetracycline
Abstract:
... In this study, a new adsorbent based on Co-Cu oxide nano-flakes was investigated to remove tetracycline from aqueous systems. Ultrasonic-assisted co-precipitation method has been used to synthesize the adsorbent nanoparticles with different precursor concentration of Cu²⁺/Co²⁺. The properties of the adsorbents have been investigated using BET, FESEM/EDS, XRD, and FTIR techniques. The removal exper ...
DOI:
10.1007/s11356-021-15685-6

43. CoO modified porous boron nitride fibers for the adsorption and removal of chlortetracycline from aqueous solution

Author:
Bozheng Wang; Wenjuan Bai; Gaoxing Wang; Kai Guo; Hongliang Duan; Yanming Xue; Chengchun Tang
Source:
Colloids and surfaces 2022 v.632 pp. 127749
ISSN:
0927-7757
Subject:
absorption; adsorbents; adsorption; aquatic environment; aqueous solutions; boron nitride; chlortetracycline; cobalt; ecological balance; electrostatic interactions; heat production; human health; hydrogen bonding; models; pollution; sorption isotherms
Abstract:
... Antibiotic pollution in the aquatic environment seriously threatens human health and ecological balance, which violates the trend of sustainable and green development in today's world. Therefore, how to effectively solve the current problem of antibiotic residues in water is highly imminent. Here, we developed CoO modified porous boron nitride fibers (CoO/P-BNFs) by relying on the strong adsorptio ...
DOI:
10.1016/j.colsurfa.2021.127749

44. Comment on “Super-adsorbent hydrogel for removal of methylene blue dye from aqueous solution” by X.-S. Hu, R. Liang and G. Sun, J. Mater. Chem. A, 2018, 6, 17612–17624

Author:
Hai Nguyen Tran
Source:
Journal of materials chemistry A 2022 v.10 no.12 pp. 6809-6814
ISSN:
2050-7496
Subject:
adsorbents; adsorption; aqueous solutions; desorption; hydrogels; isoelectric point; methylene blue; models; porosity; sorption isotherms
Abstract:
... This work aims to present several concerns and additional arguments related to an original paper previously published in the journal. Firstly, there is not enough evidence to convince us that the chemical adsorption of methylene blue dye by the hydrogel was only based on the best fitting of the experimental data of time-dependent adsorption to the pseudo-second-order model. Secondly, the adsorptio ...
DOI:
10.1039/c9ta11420c

45. Comparative investigation on removal of thallium(Ⅰ) from wastewater using low-grade pyrolusite and pyrolysis residue derived from oily sludge: performance, mechanism and application

Author:
Ge Zhang; Huifen Yang; Zhen Li; Meiling Jiang; Qingping Zhang
Source:
Groundwater for sustainable development 2022 v.16 pp. 100713
ISSN:
2352-801X
Subject:
adsorbents; adsorption; aqueous solutions; chemical industry; chemical precipitation; groundwater; industrial wastewater; kinetics; pH; pollution; pyrolysis; sludge; sorption isotherms; sustainable development; thallium
Abstract:
... The pyrolysis residue (PR) and low-grade pyrolusite (LGP) were developed as adsorbents for Tl(I) removal from aqueous solution. The Tl(Ⅰ) removal performance and mechanisms of PR and LGP were investigated. At initial solution pH of 4, Tl(Ⅰ) concentration of 1.6 mg⋅L⁻¹ and adsorbent dosage of 3 g⋅L⁻¹, the Tl(Ⅰ) removal efficiency achieved 93.44% for PR and 98.25% for LGP. Both the adsorption of PR ...
DOI:
10.1016/j.gsd.2021.100713

46. Continuous fixed-bed column study and adsorption modeling removal of Ni²⁺, Cu²⁺, Zn²⁺ and Cd²⁺ ions from synthetic acid mine drainage by nanocomposite cellulose hydrogel

Author:
Musamba Banza; Hilary Rutto
Source:
Journal of environmental science and health 2022 v.57 no.2 pp. 117-129
ISSN:
1532-4117
Subject:
absorption; acid mine drainage; adsorbents; adsorption; aqueous solutions; biodegradability; cellulose; heavy metals; human health; hydrogels; nanocomposites; nanocrystals; remediation; water purification
Abstract:
... Heavy metal ions are widely recognized for their harmful effects on human health and the environment. Heavy metal ions removal using nanocomposite hydrogel is a promising method for industrial applications and process development owing to their utilization in both kinematic and dynamic adsorption process. There is a need to develop simple, low-cost water purification techniques that use biodegrada ...
DOI:
10.1080/10934529.2022.2036552

47. Core-shell alginate beads as green reactor to synthesize grafted composite beads to efficiently boost single/co-adsorption of dyes and Pb(II)

Author:
Xue Wang; Huan Zhang; Qingdong He; Haifeng Xing; Ke Feng; Fang Guo; Wenbo Wang
Source:
International journal of biological macromolecules 2022 v.206 pp. 10-20
ISSN:
0141-8130
Subject:
acrylamides; adsorbents; adsorption; ammonium persulfate; aqueous solutions; calcium; calcium chloride; crosslinking; droplets; gelatin; heavy metals; methylene blue; polymerization; polymers; sepiolite; sodium alginate
Abstract:
... A series of sodium alginate (SA) grafted polymer composite beads were synthesized by a solution free-radical graft polymerization reaction performed in a surface crosslinked alginate bead reactor. The outer surface of the precursor droplet containing reactants including SA, acrylamide (AM), N,N′-methylene-bis-acrylamide (MBA), ammonium persulfate (APS), sepiolite (SP) and gelatin (GE) was instantl ...
DOI:
10.1016/j.ijbiomac.2022.02.091

48. Cost-effective phosphorus removal from aqueous solution by a chitosan/lanthanum hydrogel bead: Material development, characterization of uptake process and investigation of mechanisms

Author:
Kok Yuen Koh; Zhihao Chen; Sui Zhang; J. Paul Chen
Source:
Chemosphere 2022 v.286 pp. 131458
ISSN:
0045-6535
Subject:
adsorbents; adsorption; aqueous solutions; chitosan; copper; cost effectiveness; crosslinking; ecosystems; electrostatic interactions; eutrophication; glutaraldehyde; human health; hydrogels; ion exchange; lanthanum; lead; models; pH; phosphates; phosphorus; sorption isotherms; zinc
Abstract:
... Excessive phosphorus is one of the main reasons leading to eutrophication that causes severe ecosystem imbalance and negative human health impacts. In this study, several chitosan (CS)/lanthanum (La) hydrogel beads were first synthesized and tested for phosphorus removal. The stable cross-linked CS/La hydrogel bead prepared with the optimized conditions of 10 wt% La/CS and 1.5 mL of 5% glutaraldeh ...
DOI:
10.1016/j.chemosphere.2021.131458

49. Coupled adsorption-catalytic reduction of permanganate on Co–Al-layered double hydroxide for dye removal

Author:
Enis Esmaili; Babak Samiey; Chil-Hung Cheng
Source:
Journal of cleaner production 2022 v.351 pp. 131521
ISSN:
0959-6526
Subject:
Lewis bases; adsorbents; adsorption; aqueous solutions; carbonates; catalysts; endothermy; methyl orange; methylene blue; micropores; models; pH; sorption isotherms; thermodynamics
Abstract:
... Permanganate (MnO4−) ions were catalytically reduced to MnO₂ by water molecules after adsorption on the surface of carbonate intercalated Co–Al-LDH. This reaction was very slow under experimental conditions in the absence of catalyst and was catalyzed by Co–Al-LDH and Co(II) ion had a key role in this process in the pH range of 2.8–13. But, at pH = 14, MnO4− ions reacted with Co(II) ion of adsorbe ...
DOI:
10.1016/j.jclepro.2022.131521

50. Decaffeination of wastewater using activated carbon produced from velvet tamarind-pericarp (Dialium Guineense)

Author:
Babalola Aisosa Oni; Samuel Eshorame Sanni; Samuel Olatunde Dahunsi; Bisike Chidiebere Egere
Source:
International journal of phytoremediation 2022 v.24 no.4 pp. 394-408
ISSN:
1549-7879
Subject:
Dialium guineense; adsorbents; adsorption; aqueous solutions; caffeine; decaffeination; endothermy; enthalpy; entropy; kinetics; pH; phytoremediation; sorption isotherms; wastewater
Abstract:
... Adsorption of caffeine from an aqueous solution was carried out using Velvet Tamarind-Pericarp, activated with H₃PO₄. The adsorbent was characterized using a scanning-electron microscope and the Brunauer-Emmett-Teller. Parameters such as activating agent concentration (80 wt.% in 100 mL solution), initial caffeine concentration of 5−40 g/L, pH of 0−14, and residence time 0−90 minutes, were investi ...
DOI:
10.1080/15226514.2021.1950118