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You searched for: Journal name Environmental technology Remove constraint Journal name: Environmental technology Subject term adsorption Remove constraint Subject term: adsorption
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1. Adsorbent selection for pesticides removal from drinking water

Author:
José Augusto Alves Pimenta; Amanda Alcaide Francisco Fukumoto; Tiago Bervelieri Madeira; Manoel Orlando Alvarez Mendez; Suzana Lucy Nixdorf; Carlos Eduardo Cava; Emília Kiyomi Kuroda
Source:
Environmental technology 2022 v.43 no.11 pp. 1672-1683
ISSN:
1479-487X
Subject:
activated carbon; adsorbents; adsorption; atrazine; carbon nanotubes; diuron; environmental technology; molecular weight; simazine; water treatment
Abstract:
... Pesticides present in water resources can cause adverse health effects even in low concentrations, due to their bio-accumulative character. Therefore, the challenge for drinking water production increases, due to the limitations of conventional water treatment technologies in the removal of small molecular weight dissolved compounds. This work aimed to provide technical and scientific support for ...
DOI:
10.1080/09593330.2020.1847203

2. Adsorption of Cu²⁺, Cd²⁺ and Pb²⁺ in wastewater by modified chitosan hydrogel

Author:
Dongliang Hao; Yali Liang
Source:
Environmental technology 2022 v.43 no.6 pp. 876-884
ISSN:
1479-487X
Subject:
adsorbents; adsorption; chitosan; environmental technology; heat; heavy metals; hydrogels; infrared spectroscopy; polyacrylic acid; thermogravimetry; wastewater; water pollution
Abstract:
... Heavy metal pollution is extraordinary critical, so it is urgent to develop an effective adsorbent to dispose of such pollution. Modified chitosan was combined with polyacrylic acid to form N-carboxymethyl chitosan hydrogel (NCS-hydrogel) adsorbent. The morphology and structure of NCS-hydrogel were analyzed and identified by infrared spectroscopy, scanning electron microscopy, thermogravimetric an ...
DOI:
10.1080/09593330.2020.1807612

3. Analysis of herbicide biosorption by means of a phenomenological mathematical distributed parameter model

Author:
Gessica Wernke; Carina Contini Triques; Pedro Yahico Ramos Suzaki; Márcia Regina Fagundes-Klen; Rosângela Bergamasco
Source:
Environmental technology 2022 v.43 no.13 pp. 1953-1960
ISSN:
1479-487X
Subject:
Moringa oleifera; adsorbents; adsorption; biosorption; diuron; environmental technology; mass transfer; models; reaction kinetics; sorption isotherms
Abstract:
... A distributed parameter model and two lumped parameter models were used in order to find the rate-limiting step in the adsorption process of a herbicide (Diuron) by Moringa oleifera husks, a possible low-cost adsorbent. For that, four kinetics assays, differentiated by the initial Diuron concentration, were performed. Langmuir isotherm well represented the equilibrium data and through this evaluat ...
DOI:
10.1080/09593330.2020.1861107

4. Application of birnessite-type solids prepared by sol–gel and oxidation methods in photocatalytic degradation of 4-nitrophenol

Author:
S. González-Morán; B. González; M. A. Vicente; R. Trujillano; V. Rives; A. Gil; S. A. Korili
Source:
Environmental technology 2022 v.43 no.3 pp. 402-410
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; chemical analysis; environmental technology; evolution; mass spectrometry; nitrogen; oxidation; p-nitrophenol; photocatalysis; potassium
Abstract:
... Potassium birnessites were prepared using two methods, sol–gel or oxidation. The solids were characterised by element chemical analysis, powder X-ray diffraction, FT-IR spectroscopy, thermal analyses, and nitrogen adsorption. The evolution of the properties as a function of the preparation method was discussed. The photocatalytic performance of these solids was preliminarily tested for the degrada ...
DOI:
10.1080/09593330.2020.1791968

5. Azo dye removal by acid pretreated biomass and its regeneration by visible light photocatalysis with incorporated CuO

Author:
Khaled Benabbas; Nassira Zabat; Imene Hocini
Source:
Environmental technology 2022 v.43 no.3 pp. 327-344
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; X-radiation; adsorption; azo dyes; biomass; biosorbents; biosorption; environmental technology; irradiation; kinetics; light; photocatalysis; photocatalysts; photolysis; sorption isotherms; texture
Abstract:
... In this work, we synthesized self-regenerative biosorbent BM-H₃PO₄-(CuO) by combining the photocatalyst CuO and acid pre-treated biomass (BM-H₃PO₄), the hybrid material BM-H₃PO₄-(CuO) was used for the removal of azo dye Direct Red 89 (DR-89). The morphology, texture phase, composition of the samples was characterized with scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, ...
DOI:
10.1080/09593330.2020.1786169

6. Copper ferrocyanide chemically immobilized onto a polyvinylidene fluoride hollow-fibre membrane surface for the removal of aqueous cesium

Author:
Hyun-Kyu Lee; Sang-June Choi
Source:
Environmental technology 2022 v.43 no.15 pp. 2241-2251
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; cesium; energy; environmental technology; filtration; pH; peptides; thermogravimetry; thermoplastics
Abstract:
... A method of chemically bonding copper ferrocynide (CuFC) to the surface of a PVDF hollow-fibre membrane (PVDF-CuFC) was designed and the resulting PVDF-CuFC was applied to the effective removal of aqueous cesium (Cs). In order to chemically immobilize CuFC on the surface of the PVDF hollow-fibre membrane, carboxyl groups were introduced onto the membrane surface (PVDF-COOH) to peptide bond with am ...
DOI:
10.1080/09593330.2021.1871659

7. Desorption characteristics of phosphate and ammonium from sludge-based biochar

Author:
Qianqian Yin; Mengtian Liu; Yonghua Li
Source:
Environmental technology 2022 v.43 no.12 pp. 1892-1902
ISSN:
1479-487X
Subject:
adsorption; ammonium; biochar; desorption; endothermy; environmental technology; heat production; pH; phosphates; pyrolysis; sewage sludge; temperature; walnut hulls; walnuts
Abstract:
... It is effective to adsorb phosphate and ammonium from water by sludge-based biochar, while the desorption performance has not been studied systematically. Biochar in this study was prepared through the co-pyrolysis of sludge and walnut shells to remove and from water. The desorption characteristics of and from the post-adsorption sludge-based biochar were investigated. The effects of the adsorptio ...
DOI:
10.1080/09593330.2020.1858179

8. Experimental study on Fenton oxidation regeneration of adsorbed toluene saturated activated carbon

Author:
Liang Ma; Zuming Wu; Mengya He; Liwang Wang; Xuejing Yang; Jinling Wang
Source:
Environmental technology 2022 v.43 no.4 pp. 524-533
ISSN:
1479-487X
Subject:
activated carbon; adsorbents; adsorption; environmental technology; oxidation; pH; temperature; toluene
Abstract:
... In this study, Fenton reagent has been adopted to oxidize and regenerate the resin based spherical activated carbon (SAC) adsorbed with toluene saturation. The effects of the mole ratio of Fe²⁺ and H₂O₂, the dosage of H₂O₂, pH value, temperature, regeneration time and the like on the regeneration rate of activated carbon have been exploited, the adsorbent used in the experiment is spherical activa ...
DOI:
10.1080/09593330.2020.1797891

9. 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

10. Investigating adsorption of model low-MW AOM components onto different types of activated carbon – influence of temperature and pH value

Author:
Lenka Cermakova; Katerina Fialova; Ivana Kopecka; Magdalena Baresova; Martin Pivokonsky
Source:
Environmental technology 2022 v.43 no.8 pp. 1152-1162
ISSN:
1479-487X
Subject:
activated carbon; adsorption; algae; arginine; aspartic acid; carcinogenicity; coagulation; disinfection; endothermy; environmental technology; hydrogen; hydrophobicity; molecular weight; organic matter; pH; phenylalanine; temperature; viscosity
Abstract:
... Low molecular weight algal organic matter (AOM), as a frequent water contaminant with poor coagulation efficiency, adversely affects the quality of produced water and serves as a source of potentially carcinogenic disinfection by-products. AOM removal from water is inevitable to eliminate the negative health and environmental impacts. This research evaluates the removal of arginine, phenylalanine ...
DOI:
10.1080/09593330.2020.1820082

11. 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

12. PVDF/SiO₂-g-CDs blended membrane for fluorescence detection and adsorption of metal ions

Author:
Jingjing Li; Zhicheng Ji; Heyu Sun; Dongdong Zhang; Yiping Zhao; Li Chen
Source:
Environmental technology 2022 v.43 no.11 pp. 1648-1661
ISSN:
1479-487X
Subject:
adsorption; endothermy; environmental technology; fluorescence; hydrophilicity; models; sewage treatment; thermodynamics
Abstract:
... The preparation method of PVDF/SiO₂-g-CDs blended membrane was that the silanized modified carbon dots (CDs) were grafted onto the PVDF/SiO₂ blended membrane surface. The surface composition, morphology, hydrophilicity, fluorescence performance and metal ions adsorption performance of PVDF/SiO₂-g-CDs blended membrane were studied. The fluorescence quenching effect of the membrane with Hg²⁺ and Fe³ ...
DOI:
10.1080/09593330.2020.1845820

13. Porous carbon supported calcium oxide for CO₂ adsorption and separation of CO₂/CH₄

Author:
Madhavi Jonnalagadda; Sobhy M. Ibrahim; Omar H. M. Shair; Suresh Mutyala
Source:
Environmental technology 2022 v.43 no.3 pp. 460-468
ISSN:
1479-487X
Subject:
X-ray diffraction; adsorption; calcium oxide; carbon; carbon dioxide; electrostatic interactions; environmental technology; heat; porosity; surface area
Abstract:
... Calcium oxide incorporated porous carbon materials were synthesized by the impregnation method to study CO₂ adsorption and separation of CO₂/CH₄. The X-ray diffraction, Raman analysis, N₂ isotherms at 77 K, and SEM with EDX analysis were used to characterize synthesized materials. XRD and N₂ isotherm results have confirmed that synthesized carbon has porosity, and EDX analysis has reported that th ...
DOI:
10.1080/09593330.2020.1791973

14. 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

15. Rapid removal of trace haloacetic acids from drinking water by a continuous adsorption process using graphene oxide

Author:
Zhongmou Liu; Zhiruo Zhang; Juwei Peng; Jinghui Wu; Yang Huo
Source:
Environmental technology 2022 v.43 no.10 pp. 1544-1550
ISSN:
1479-487X
Subject:
absorbents; adsorbents; adsorption; dichloroacetic acid; environmental technology; graphene oxide; hydrogen; monochloroacetic acid; pH; temperature; trichloroacetic acid
Abstract:
... Significant health risks are caused by trace levels of haloacetic acids (HAAs) in drinking water. We used graphene oxide (GO), a high-performance absorbent, to remove monochloroacetic acid (MCAA), dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA). 31.6%, 27.1% and 30.2% of MCAA, DCAA and TCAA in drinking water could be rapidly removed within 2 min by the interaction of intermolecular hydr ...
DOI:
10.1080/09593330.2020.1841307

16. 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

17. Reusability in visible light of titanate nanotubes for the removal of organic pollutants: role of calcination temperature

Author:
Ana Laura Ruiz-Castillo; Mariana Hinojosa-Reyes; Roberto Camposeco-Solis; Facundo Ruiz
Source:
Environmental technology 2022 v.43 no.14 pp. 2081-2098
ISSN:
1479-487X
Subject:
absorbance; adsorption; caffeine; dyes; environmental technology; hot water treatment; ion exchange; isopropyl alcohol; kinetics; light; nanotubes; photocatalysis; sorption isotherms; temperature; wastewater
Abstract:
... Titanate nanotubes (NTs) were synthesised by the hydrothermal method and later calcined at temperatures between 100–500°C. The calcined NTs were characterised and evaluated in the physicochemical adsorption of the safranin dye and photocatalytic degradation of caffeine. The materials calcined at low temperatures displayed a tubular structure and the H₂Ti₃O₇ crystalline phase, which was transformed ...
DOI:
10.1080/09593330.2020.1866085

18. 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

19. Selective adsorption of lead(II) from aqueous solution

Author:
Viet Anh Hoang; Syouhei Nishihama; Kazuharu Yoshizuka
Source:
Environmental technology 2022 v.43 no.14 pp. 2124-2134
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; chromatography; environmental technology; goethite; magnetite; pH
Abstract:
... Adsorptive separation of Pb(II) from aqueous solution containing Pb(II) and other heavy metals (Cu(II), Zn(II) and Cd(II)) has been investigated, using three adsorbents, such as an iminodiacetic acid-chelating resin (CR11) and Fe-based adsorbents (goethite and magnetite). Batchwise adsorption of Pb(II) and other metal ions in single metal system and multi-components system was carried out with var ...
DOI:
10.1080/09593330.2020.1866088

20. The adsorption mechanism of Zn²⁺ by triclinic birnessite and the mechanism

Author:
Dong-dong Shi; Shu-zhi Wang; Ye Li; Ying-wei Di; Tao Wang
Source:
Environmental technology 2022 v.43 no.6 pp. 927-934
ISSN:
1479-487X
Subject:
acid soils; acidity; adsorption; birnessite; environmental technology; heavy metals; pH; phase transition; pollution; reaction mechanisms
Abstract:
... In this paper, the reaction mechanism for the adsorption of Zn²⁺ by synthetic triclinic Na-birnessite was studied by reacting synthetic triclinic Na-birnessite with Zn²⁺ in solution, thereby providing a theoretical basis for the purification of heavy metal ions in acid soil and water by triclinic birnessite. The adsorption effect of Zn²⁺ on Na-birnessite enhances with an increase in either reactio ...
DOI:
10.1080/09593330.2020.1811393

21. ‘Green’ coagulant application with activated carbon: dosing sequence and removal of selected micropollutants and effluent organic matter from municipal wastewater

Author:
Ivana Ivančev-Tumbas; Minja Bogunović; Vesna Vasić; Marina Šćiban; Aleksandra Tubić; Anita Leovac Maćerak; Jelena Prodanović
Source:
Environmental technology 2022 v.43 no.8 pp. 1163-1169
ISSN:
1479-487X
Subject:
activated carbon; adsorption; beans; benzophenones; caffeine; chemical oxygen demand; coagulants; coagulation; decaffeination; environmental technology; hydrophilicity; hydrophobicity; municipal wastewater; organic matter; pollutants
Abstract:
... Combination of ‘green’ coagulation and powdered activated carbon adsorption was tested for removal of benzophenone (BP), benzophenone-3 (BP-3) and caffeine (CF) from treated municipal wastewater at realistic concentration levels (1–2 µg/L). At the same time it was tracked how the process affected effluent organic matter (EfOM) by measuring chemical oxygen demand (COD). Green coagulant was produced ...
DOI:
10.1080/09593330.2020.1821788

22. A green synthesized recyclable ZnO/MIL-101(Fe) for Rhodamine B dye removal via adsorption and photo-degradation under UV and visible light irradiation

Author:
Enas Amdeha; Rasha S. Mohamed
Source:
Environmental technology 2021 v.42 no.6 pp. 842-859
ISSN:
1479-487X
Subject:
acetic acid; adsorption; catalysts; dyes; environmental technology; hot water treatment; irradiation; light; nanocomposites; photocatalysis; photolysis; pollutants; reflectance spectroscopy; rhodamines; wastewater; water treatment; zeta potential
Abstract:
... Metal–organic frameworks (MOFs) have recently debuted as participants and solid supports in catalysts for environmental application in water treatment. Visible light active nanocomposites; ZnO/MIL-101(Fe); were synthesized via a hydrothermal method by loading ZnO; prepared by a green method; on a porous MIL-101(Fe) to be used as a heterogeneous catalyst for Rhodamine B dye (RhB) degradation as a m ...
DOI:
10.1080/09593330.2019.1647290

23. Adsorption and biodegradation removal of methylene blue in a down-flow hanging filter reactor incorporating natural adsorbent

Author:
Phan Nhu Nguyet; Takahiro Watari; Yuga Hirakata; Masashi Hatamoto; Takashi Yamaguchi
Source:
Environmental technology 2021 v.42 no.3 pp. 410-418
ISSN:
1479-487X
Subject:
adsorbents; adsorption; biodegradation; biomass; coir; environmental protection; environmental technology; methylene blue; microbial communities; wastewater
Abstract:
... This study was carried out to explore the importance of adsorption and biodegradation mechanisms for methylene blue (MB) removal by a novel natural adsorbent (purified coconut fibre; PCF) incorporated to a down-flow hanging fibre (DHF) reactor. An adsorption DHF (Ads-DHF) reactor demonstrated the adsorption removal mechanism, while a combined adsorption-biological DHF (Bio-DHF) reactor simulated t ...
DOI:
10.1080/09593330.2019.1629636

24. Adsorption characteristics of Pb(II), Cd(II) and Cu(II) on carbon nanotube-hydroxyapatite

Author:
Gang Li; Jinli Zhang; Yu Li; Jia Liu; Zhen Yan
Source:
Environmental technology 2021 v.42 no.10 pp. 1560-1581
ISSN:
1479-487X
Subject:
adsorption; carbon; endothermy; environmental technology; ionic strength; models; pH; sorption isotherms; temperature
Abstract:
... Based on batch experiments, we investigate the adsorption characteristics of Pb(II), Cd(II) and Cu(II) on multi-walled carbon nanotube-hydroxyapatite (MWCNT-HAP) composites in detail and explore the effects of the solid-to-liquid ratio, pH, the ionic strength, reaction time and temperature on adsorption. The results show that the adsorption on MWCNT-HAP follows Pb(II)>Cu(II)>Cd(II). With an increa ...
DOI:
10.1080/09593330.2019.1674385

25. 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

26. Adsorption of sodium diclofenac in aqueous medium using graphene oxide nanosheets

Author:
Ana Carolina Sestito Guerra; Murilo Barbosa de Andrade; Tássia Rhuna Tonial dos Santos; Rosângela Bergamasco
Source:
Environmental technology 2021 v.42 no.16 pp. 2599-2609
ISSN:
1479-487X
Subject:
Gibbs free energy; adsorbents; adsorption; diclofenac; enthalpy; entropy; environmental technology; graphene oxide; nanosheets; pH; temperature
Abstract:
... In this work, the adsorption of sodium diclofenac (DCF) on graphene oxide nanosheets (GON) was evaluated. GON was synthesized by the modified Hummers method and characterized regarding its composition, morphology, and surface load. It was applied in batch adsorption tests. The process was evaluated from the kinetic, isothermal and thermodynamic properties, and parameters such as adsorbent mass and ...
DOI:
10.1080/09593330.2019.1707882

27. Adsorption onto ACFC of mixture of pharmaceutical residues in water – experimental studies and modelling

Author:
Hélène Fallou; Sylvain Giraudet; Nicolas Cimetière; Dominique Wolbert; Pierre Le Cloirec
Source:
Environmental technology 2021 v.42 no.18 pp. 2845-2855
ISSN:
1479-487X
Subject:
activated carbon; adsorption; carbon fibers; environmental technology; groundwater; models; organic matter; pollutants; porous media
Abstract:
... The presence of pharmaceutical residues in water resources is a critical issue for the production of drinking water, even though trace concentrations are mostly encountered. The adsorption of eight micropollutants, in mixture, onto a microporous activated carbon fibre cloth was investigated. For each compound, the kinetics and isotherms of adsorption were studied in batch reactors with ultrapure w ...
DOI:
10.1080/09593330.2020.1716393

28. Application of central composite design to reveal resin deterioration during the removal of hexavalent chromium from wastewater

Author:
Ke Xiao; Hao Yang; Jing He; Bo Yang; Caizhen Zhu
Source:
Environmental technology 2021 v.42 no.2 pp. 298-305
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; adsorption; chromium; environmental technology; ion exchange; oxidants; oxidation; pH; polymers; response surface methodology; temperature; wastewater
Abstract:
... As a strong oxidant, aqueous Cr(VI) possibly oxidizes the polymer resin and weakens resin adsorption property during Cr(VI) removal from solutions by ion exchange. In the present study, to minimize the resin oxidation, central composite design approach based on response surface methodology was employed with different variables (Cr(VI) concentration of 100–1000 mg L–¹, temperature of 293–333 K, pH ...
DOI:
10.1080/09593330.2019.1626915

29. 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

30. Batch study for Pb²⁺ removal by polyvinyl alcohol–biochar macroporous hydrogel bead

Author:
Zhiyuan Wan; Dan Chen; Haoyi Pei; Jun Liu; Shuyan Liang; Xiaoya Wang; Huifang Wu
Source:
Environmental technology 2021 v.42 no.4 pp. 648-658
ISSN:
1479-487X
Subject:
Gibbs free energy; adsorbents; adsorption; alginates; biochar; enthalpy; entropy; environmental technology; heat production; hydrogels; kinetics; lead; pH; polyvinyl alcohol; porous media; sodium; sorption isotherms
Abstract:
... In this paper, a novel adsorbent which used polyvinyl alcohol, alginate and biochar was successfully made and been used to remove lead from aqueous solutions. Batch experiments were carried out to evaluate the adsorption capacities of Pb (II) on this bead. Experimental data were analysed by the model equations like Langmuir and Freundlich and adsorption kinetic constants were determined using pseu ...
DOI:
10.1080/09593330.2019.1642388

31. Behaviour of cerium(III) in the presence of components of soils and its humate complex

Author:
Melania Jiménez-Reyes; Perla Tatiana Almazán-Sánchez; Marcos Solache-Ríos
Source:
Environmental technology 2021 v.42 no.27 pp. 4363-4371
ISSN:
1479-487X
Subject:
adsorbents; adsorption; cerium; endothermy; environmental technology; forests; heat production; models; prototypes; semiarid zones
Abstract:
... The behaviour of cerium, as a prototype of the lanthanide group, against the inorganic components of two types of soils (one from an Abisreligiosa forest (IM-F) and the other from a semiarid zone (IM-S)) was investigated. The pseudo-second order model applied to the kinetics adsorption data for both soils indicated chemical adsorption; the equilibrium was reached in less than 4 h, the adsorption o ...
DOI:
10.1080/09593330.2020.1758219

32. 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

33. Bisfenol A adsorption using a low-cost adsorbent prepared from residues of babassu coconut peels

Author:
Taynara Basso Vidovix; Eduarda Freitas Diogo Januário; Rosângela Bergamasco; Angélica Marquetotti Salcedo Vieira
Source:
Environmental technology 2021 v.42 no.15 pp. 2372-2384
ISSN:
1479-487X
Subject:
activated carbon; adsorbents; adsorption; bisphenol A; chemical composition; coconuts; endothermy; environmental technology; human health; hydrogen; manufacturing; temperature; thermodynamics; water pollution
Abstract:
... Nowadays, the occurrence of microcontaminants in water resources has become a worldwide concern. Among them, it can be mentioned Bisphenol A, a substance widely used in the chemical composition of plastic such as manufacture of packages, bottles, toiletries, among others. Its use may cause adverse effects on human health and the environment. Thus, a treatment is necessary to remove this compound a ...
DOI:
10.1080/09593330.2019.1701568

34. Catalytic hydrogenation of nitrate in water: improvement of the activity and selectivity to N₂ by using Rh(III)-hexamolybdate supported on ZrO₂–Al₂O₃

Author:
María A. Jaworski; Marisa Navas; Guillermo R. Bertolini; María B. Peroni; Carmen I. Cabello; Delia Gazzoli; Mónica L. Casella
Source:
Environmental technology 2022 v.43 no.4 pp. 560-571
ISSN:
1479-487X
Subject:
Lewis acids; acidity; adsorption; catalysts; environmental technology; hydrogenation; nitrates; oxygen; surface area; synergism
Abstract:
... Catalysts prepared on ZrO₂, Al₂O₃ and ZrO₂–Al₂O₃ (ZrAl-10) supported with Anderson heteropolyanion (RhMo₆) as active phase were investigated for the elimination of NO₃ ⁻ from water. Raman characterization of pure and supported RhMo₆ phase showed the presence of polymolybdic species of different degrees of complexity when RhMo₆ was supported. The temperature-programmed reduction study revealed the ...
DOI:
10.1080/09593330.2020.1797895

35. Effect of CO₂/H₂O on adsorptive removal of H₂S/SO₂ mixture

Author:
Jianyu Xuan; Chenyang Wang; Lin Zhang; Qun Cui; Haiyan Wang
Source:
Environmental technology 2022 v.43 no.13 pp. 2069-2079
ISSN:
1479-487X
Subject:
activated carbon; adsorption; carbon dioxide; desulfurization; environmental technology; gases; sulfur; sulfuric acid
Abstract:
... Few studies focus on the simultaneous removal performance and mechanism of H₂S and SO₂ mixture in Claus tail gas with a high concentration of H₂O (20–30 vol.%) and CO₂ (8–10 vol.%). In this paper, the effects of H₂O and CO₂ on the simultaneous removal of H₂S and SO₂ for the by activated carbon (TL-1) were studied. Fresh (TL-1-F) and desulfurisation sulfur-loaded TL-1 activated samples (TL-1-E1 and ...
DOI:
10.1080/09593330.2020.1866084

36. Efficiencies of available organic mixtures for the biological treatment of highly acidic-sulphate rich drainage of the San Jose mine, Bolivia

Author:
Carla Oporto; Gabriela Baya; Carlo Vandecasteele
Source:
Environmental technology 2021 v.42 no.8 pp. 1283-1291
ISSN:
1479-487X
Subject:
acid mine drainage; adsorption; biological treatment; bioreactors; composts; coprecipitation; drainage; environmental technology; organic matter; pH; pollution; sheep manure; straw; sulfates; sulfides; Andes region; Bolivia
Abstract:
... The environmental contamination due to mining activities in the Andean region of Bolivia is a serious concern, as it leads to highly acidic (pH 2.4) acid mine drainage (AMD), severely polluted by sulfate (>12,000 mg L⁻¹). Passive bioreactors entailing biological sulfate reduction and removal of metals through sulfide precipitation have been recognized as a promising biotechnology. The reactivity o ...
DOI:
10.1080/09593330.2019.1665109

37. Efficiency evaluation of thermal, ultrasound and solvent techniques in activated carbon regeneration

Author:
Keila Guerra Pacheco Nunes; Letícia Weidlich Sfreddo; Morgana Rosset; Liliana Amaral Féris
Source:
Environmental technology 2021 v.42 no.26 pp. 4189-4200
ISSN:
1479-487X
Subject:
activated carbon; adsorption; air; diclofenac; environmental technology; ethanol; ethyl acetate; solvents; sorbents; temperature; ultrasonic treatment; ultrasonics
Abstract:
... The regeneration of diclofenac saturated activated carbon was studied and compared by thermal, solvent and ultrasound techniques in this work. Thermal regeneration was performed at 673 K in atmospheric air for one hour. Different proportions of solvents (ethanol, ethyl acetate and H₂O) were used to evaluate the regeneration of the sorbent solid. Ultrasound treatment was tested by varying the time ...
DOI:
10.1080/09593330.2020.1746839

38. Electrospun polyurethane/phytic acid nanofibrous membrane for high efficient removal of heavy metal ions

Author:
Yinchun Fang; Xinhua Liu; Xiao Wu; Xuchen Tao; Wenqing Fei
Source:
Environmental technology 2021 v.42 no.7 pp. 1053-1060
ISSN:
1479-487X
Subject:
adsorption; environmental technology; heavy metals; hydrophilicity; nanofibers; pH; phosphates; phytic acid; polyurethanes; surface area; temperature
Abstract:
... Polyurethane (PU) nanofibers possess large specific surface area and excellent mechanical properties which have been used as the matrix for many applications. Phytic acid is the biocompatible and environment-friendly organic acid with excellent chelating ability of heavy metal ions due to it contains 6 phosphate groups. In this study, the PU/phytic acid nanofibrous membrane has been successfully p ...
DOI:
10.1080/09593330.2019.1652695

39. Emulsified oil separation by bioadsorption: a sustainable proposal

Author:
Rachel M. Ferreira; Ana Laura D. M. Campista; Danielle M. A. Stapelfeldt; Maria de F. R. Moreira
Source:
Environmental technology 2022 v.43 no.5 pp. 696-708
ISSN:
1479-487X
Subject:
Salvinia; adsorbents; adsorption; biomass; emulsions; environmental technology; kinetics; models; oils; pH; phytoremediation; sorption isotherms; sustainable development; temperature; thermodynamics
Abstract:
... Oil emulsions are very stable, so both the treatment and the recovery of marine oil spills require expensive technologies, sometimes inefficient. Thus, studies of alternative methods for the treatment of oily effluents and phytoremediation are very important for sustainable development. The objective of this study was to use a chemically modified biomass of Salvinia sp. (SOH), for the removal of o ...
DOI:
10.1080/09593330.2020.1801852

40. Enhancement of Cr(VI) ion adsorption by two-step grafting of methacrylamide (MAAm) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) onto polyethylene plate

Author:
Yoshinori Kitao; Yuji Kimura; Hiromichi Asamoto; Hiroaki Minamisawa; Kazunori Yamada
Source:
Environmental technology 2022 v.43 no.13 pp. 2033-2046
ISSN:
1479-487X
Subject:
absorptivity; adsorbents; adsorption; electrostatic interactions; environmental technology; hydrophilicity; kinetics; pH; polyethylene; sorption isotherms; temperature
Abstract:
... Polyethylene (PE) plates grafted with a neutral hydrophilic monomer, methacrylamide (MAAm), and a cationic monomer, 2-(dimethylamino)ethyl methacrylate (DMAEMA), (PE-g-PMAAm)-g-PDMAEMA plates, were prepared by the two-step photografting. The Cr(VI) ion adsorption of the resultant (PE-g-PMAAm)-g-PDMAEMA plates was investigated as a function of the initial pH value, temperature, and grafted amounts ...
DOI:
10.1080/09593330.2020.1864481

41. Evaluation of efficiency and capacity of thermal, chemical and ultrasonic regeneration of tetracycline exhausted activated carbon

Author:
Letícia Reggiane de Carvalho Costa; Luana de Moraes Ribeiro; Gelsa Edith Navarro Hidalgo; Liliana Amaral Féris
Source:
Environmental technology 2022 v.43 no.6 pp. 907-917
ISSN:
1479-487X
Subject:
activated carbon; adsorbents; adsorption; desorption; environmental technology; heat; heat treatment; methanol; pollutants; solid wastes; solvents; temperature; tetracycline; ultrasonic treatment; ultrasonics
Abstract:
... Emerging pollutants have received increasing attention because of their potential environmental risks. As conventional treatment processes are not able to completely remove emerging pollutants, such as drugs, for example, the adsorption process is considered a complementary treatment. However, after some time of use, the adsorbent solids used in this type of process become saturated and there may ...
DOI:
10.1080/09593330.2020.1811391

42. Experimental and statistical analysis of As(III) adsorption from contaminated water using activated red mud doped calcium-alginate beads

Author:
A. Naga Babu; T. Raja Sree; D. Srinivasa Reddy; G. Suresh Kumar; G. V. Krishna Mohan
Source:
Environmental technology 2021 v.42 no.12 pp. 1810-1825
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aluminum; arsenic; endothermy; environmental technology; humans; industry; kinetics; models; pH; response surface methodology; sorption isotherms; thermodynamics; wastewater; water pollution
Abstract:
... Arsenic present in water bodies causes devastating effects on aquatic organisms and indirectly poses a hazardous threat to human existence. There is an urgent need to develop potential and convincing technologies to troubleshoot this problem. In the present study, an adsorbent has been prepared using the waste red mud from hazardous aluminium industry and doping it with calcium-alginate beads (ARM ...
DOI:
10.1080/09593330.2019.1681520

43. Experimental study of butane adsorption on coconut based activated carbon for different gas concentrations, temperatures and relative humidities

Author:
Adnan Görgülü; Hüseyin Yağlı; Yıldız Koç; Ali Koç; Nurhan Adil Öztürk; Özkan Köse
Source:
Environmental technology 2021 v.42 no.14 pp. 2122-2131
ISSN:
1479-487X
Subject:
activated carbon; adsorption; air; butanes; coconuts; environmental technology; relative humidity; temperature; van der Waals forces
Abstract:
... In this paper, the adsorption behaviour of activated carbon was investigated experimentally for changing butane concentration, temperature and relative humidity. Throughout the study, the coconut-based activated carbon was used. During the tests applied for butane concentration of 2, 4, 8, 20, 40 and 80 ppm, the temperature was taken as 15, 23 and 33°C for a relative humidity of 50, 70 and 90%. Th ...
DOI:
10.1080/09593330.2019.1692913

44. 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

45. Fabrication of attapulgite-based dual responsive composite hydrogel and its efficient adsorption for methyl violet

Author:
Yi-xin Liu; Hui Zhong; Xiao-rong Li; Zhuan-li Bao; Zhi-peng Cheng; Yu-jie Zhang; Chun-xiang Li
Source:
Environmental technology 2022 v.43 no.10 pp. 1480-1492
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; adsorption; environmental technology; free radicals; gentian violet; hydrogels; kinetics; models; pH; polymerization; sorption isotherms; temperature; wastewater treatment; zeta potential
Abstract:
... In this work, attapulgite (ATP)-based dual sensitive poly (N-isopropylacrylamide-co-acrylic acid) composite hydrogel, P(NIPAM-co-AA)/ATP, was prepared by free radical polymerization. The prepared composite hydrogel was characterized via methods of scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), zeta potential analysis and Brunauer, Emmett, and Teller (BET) etc. ...
DOI:
10.1080/09593330.2020.1838623

46. Facile preparation of taurine modified magnetic chitosan nanocomposites as biodegradable adsorbents toward methylene blue

Author:
Long Huang; Dan Li; Duntie Zhang; Hong Peng; Yong Ren
Source:
Environmental technology 2021 v.42 no.20 pp. 3191-3204
ISSN:
1479-487X
Subject:
adsorbents; adsorption; biodegradability; chitosan; electrostatic interactions; environmental technology; heat production; kinetics; magnetic separation; magnetism; methylene blue; nanocomposites; pH; sorption isotherms; taurine
Abstract:
... A novel magnetic Fe₃O₄@chitosan@taurine adsorbent (MCT) was prepared by surface modification of magnetic chitosan nano-composites with taurine-glutaraldehyde solution. The adsorbents were characterized by FTIR, SEM, TEM, XRD, TGA and VSM techniques, respectively. According to the FTIR spectrum of MCT, the characteristic peaks of the SO₃ ⁻group on MCT were observed to have a shift after adsorption ...
DOI:
10.1080/09593330.2020.1725140

47. Immobilization of Cd and phosphorus utilization in eutrophic river sediments by biochar-supported nanoscale zero-valent iron

Author:
Baohong Han; Lei Song; Hao Li; Hongwei Song
Source:
Environmental technology 2021 v.42 no.26 pp. 4072-4078
ISSN:
1479-487X
Subject:
adsorption; environmental technology; eutrophication; iron; pH; phosphorus; rivers; sediments; stabilizers; total phosphorus
Abstract:
... The Ulansuhai River is polluted by heavy metals and faces a serious problem of eutrophication. According to a previous study, biochar-supported nanoscale zero-valent iron composite (BC-nZVI) can be used to effectively immobilize heavy metals, converting Cd from labile to a stable fraction. The present study aimed to evaluate the immobilization of Cd in sediments of eutrophic rivers by BC-nZVI and ...
DOI:
10.1080/09593330.2020.1745289

48. Immobilization of unmodified aminoanthraquinone derivatives onto silica gel surface for solid-phase extraction and pre-concentration of Pb(II)

Author:
Yuwapon Uppa; Thianthan Taweetanavanich; Chatthai Kaewtong; Noi Niamsa
Source:
Environmental technology 2021 v.42 no.8 pp. 1252-1259
ISSN:
1479-487X
Subject:
adsorbents; adsorption; density functional theory; detection limit; environmental technology; heavy metals; pH; silica gel; solid phase extraction; spectroscopy; standard deviation
Abstract:
... In this project, silica gel chemically bonded with derivatives of aminoanthraquinone were synthesized and characterized. Adsorbents 1,8-aminoanthraquinone-3-aminopropylsilica (SL1), 2-aminoanthraquinone-3-aminopropylsilica (SL2) and 1-aminoanthraquinone-3-aminopropylsilica (SL3) were produced and tested to adsorb heavy metal solutions including Pb(II) Cu(II) Zn(II) Cd(II) and Co(II). The concentra ...
DOI:
10.1080/09593330.2019.1663937

49. In situ preparation of CaTiO₃ and its effect on CO₂ sorption performance of nano-CaO–CaTiO₃ adsorbent

Author:
Hao Liu; Sufang Wu
Source:
Environmental technology 2022 v.43 no.5 pp. 673-683
ISSN:
1479-487X
Subject:
adsorbents; adsorption; carbon dioxide; durability; environmental technology; temperature
Abstract:
... The aim of this work is to prepare the nano-CaO–CaTiO₃ adsorbents with both high CO₂ sorption capacity and high durability. A series of nano-CaO–CaTiO₃ adsorbents with different CaTiO₃ grain sizes were in situ prepared by the reaction between TiO₂ and nano-CaO with variation of the preparation methods, doping contents and thermal pretreatment conditions. The results showed that the CaTiO₃ grain si ...
DOI:
10.1080/09593330.2020.1800105

50. Influence of selected amides and adsorbent particle size on the adsorption of p-nitrophenol on granulated activated carbon

Author:
Branko B. Kordić; Branislav D. Jović; Marina M. Kovačević; Jelena S. Tričković
Source:
Environmental technology 2022 v.43 no.2 pp. 171-182
ISSN:
1479-487X
Subject:
activated carbon; adsorbents; adsorption; amides; diffusivity; environmental technology; heat transfer; mass transfer; models; p-nitrophenol; particle size; reaction kinetics; sorption isotherms
Abstract:
... In this paper, the influence of selected amides on the adsorption of p-nitrophenol was investigated. Commercial granulated activated carbon DARCO was used as an adsorbent. Granulations of 20–40 and 12–20 mps were used in the experiments. The presence of N-benzylbenzamide and N-methylbenzamide in the system lowered the adsorption capacity of p-nitrophenol, while N-methylpropionamide did not show in ...
DOI:
10.1080/09593330.2020.1782992