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Ma J, Li Y, Wang CC, Wang P. Superior Removal of Vanadium(V) from Simulated Groundwater with a Fe-Based Metal-Organic Framework Immobilized on Cotton Fibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16863-16872. [PMID: 37963178 DOI: 10.1021/acs.langmuir.3c02411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
A suitable adsorbent is essential in the process of removing hazardous vanadium(V) from actual groundwater. In this work, MIL-88A(Fe)/cotton (MC) was employed to eliminate V(V) from simulated vanadium-contaminated groundwater. The findings demonstrated that MC exhibited an exceptional performance in removing V(V), displaying a maximum adsorption capacity of 218.71 mg g-1. MC exhibits great promise as an adsorbent for V(V) elimination in an extensive pH range spanning 3 to 11. Even in the presence of high levels of competing ions such as Cl-, NO3-, and SO42-, MC demonstrated remarkable specificity in adsorbing V(V). The results of column experiments and co-occurring ions influence tests indicate that MC is a potential candidate for effectively treating actual vanadium-contaminated groundwater. The effluent could meet the vanadium content restriction of 50 μg L-1 required in China's drinking water sources. Regeneration of MC can be performed easily without experiencing significant capacity loss. The results obtained from this research indicate the promising potential of MC in mitigating vanadium pollution.
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Affiliation(s)
- Jing Ma
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Ya Li
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Chong-Chen Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Peng Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
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2
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Zhang B, Zhang H, He J, Zhou S, Dong H, Rinklebe J, Ok YS. Vanadium in the Environment: Biogeochemistry and Bioremediation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:14770-14786. [PMID: 37695611 DOI: 10.1021/acs.est.3c04508] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Vanadium(V) is a highly toxic multivalent, redox-sensitive element. It is widely distributed in the environment and employed in various industrial applications. Interactions between V and (micro)organisms have recently garnered considerable attention. This Review discusses the biogeochemical cycling of V and its corresponding bioremediation strategies. Anthropogenic activities have resulted in elevated environmental V concentrations compared to natural emissions. The global distributions of V in the atmosphere, soils, water bodies, and sediments are outlined here, with notable prevalence in Europe. Soluble V(V) predominantly exists in the environment and exhibits high mobility and chemical reactivity. The transport of V within environmental media and across food chains is also discussed. Microbially mediated V transformation is evaluated to shed light on the primary mechanisms underlying microbial V(V) reduction, namely electron transfer and enzymatic catalysis. Additionally, this Review highlights bioremediation strategies by exploring their geochemical influences and technical implementation methods. The identified knowledge gaps include the particulate speciation of V and its associated environmental behaviors as well as the biogeochemical processes of V in marine environments. Finally, challenges for future research are reported, including the screening of V hyperaccumulators and V(V)-reducing microbes and field tests for bioremediation approaches.
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Affiliation(s)
- Baogang Zhang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Han Zhang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Jinxi He
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Shungui Zhou
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hailiang Dong
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences Beijing, Beijing 100083, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, Wuppertal 42285, Germany
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
- International ESG Association (IESGA), Seoul 02841, Republic of Korea
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3
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Dhar AK, Himu HA, Bhattacharjee M, Mostufa MG, Parvin F. Insights on applications of bentonite clays for the removal of dyes and heavy metals from wastewater: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:5440-5474. [PMID: 36418828 DOI: 10.1007/s11356-022-24277-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
In recent decades, increased industrial, agricultural, and domestic activities have resulted in the release of various pollutants into the aquatic systems, which require a reliable and environmentally friendly method to remove them. Adsorption is one of the most cost-effective and sustainable wastewater treatment techniques. A plethora of low-cost bio-based adsorbents have been developed worldwide so far to supplant activated carbon and its high processing costs. Bentonite clays (BCs), whether in natural or modified form, have gained enormous potential in wastewater treatment and have been used successfully as a novel and cost-effective bio-sorbent for removing organic and inorganic pollutants from the liquid suspension. It has become a sustainable solution for wastewater treatment due to its variety of surface and structural properties, superior chemical stability, high capacity for cation exchange, elevated surface area due to its layered structure, non-toxicity, abundance, low cost, and high adsorption capacity compared to other clays. This review encompasses comprehensive literature about various modification techniques and adsorption mechanisms of BCs concerning dyes and heavy metal removal from wastewater. A critical overview of different parameters for optimizing adsorption capacity and regeneration via the desorption technique has also been presented here. Finally, a conclusion has been drawn with some future research recommendations based on technological challenges encountered in industrializing these materials.
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Affiliation(s)
- Avik Kumar Dhar
- Department of Textiles, Merchandising, and Interiors, University of Georgia, 321 Dawson Hall, 305 Sanford Drive, Athens, GA-30602, USA.
| | - Humayra Akhter Himu
- Department of Environmental Science & Engineering, Bangladesh University of Textiles, Tejgaon, Dhaka-1208, Bangladesh
| | - Maitry Bhattacharjee
- Department of Chemical, Materials, and Biomedical Engineering, University of Georgia, Athens, GA-30602, USA
| | - Md Golam Mostufa
- Department of Textile Engineering, Shyamoli Textile Engineering College, Dhaka, 1207, Bangladesh
| | - Fahmida Parvin
- Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh
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Matusoiu F, Negrea A, Ciopec M, Duteanu N, Negrea P, Ianasi P, Ianasi C. Vanadium (V) Adsorption from Aqueous Solutions Using Xerogel on the Basis of Silica and Iron Oxide Matrix. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8970. [PMID: 36556774 PMCID: PMC9786883 DOI: 10.3390/ma15248970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/02/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Vanadium is considered a strategic metal with wide applications in various industries due to its unique chemical and physical properties. On the basis of these considerations, the recovery of vanadium (V) is mandatory because of the lack of raw materials. Various methods are used to recover vanadium (V) from used aqueous solutions. This study develops a clean and effective process for the recovery of vanadium (V) by using the adsorption method. At the same time, this study synthesizes a material starting from silica matrices and iron oxides, which is used as an adsorbent material. To show the phase composition, the obtained material is characterized by X-ray diffraction showing that the material is present in the amorphous phase, with a crystal size of 20 nm. However, the morphological texture of the material is determined by the N2 adsorption-desorption method, proving that the adsorbent material has a high surface area of 305 m2/g with a total pore volume of 1.55 cm3/g. To determine the efficiency of the SiO2FexOy material for the recovery of vanadium through the adsorption process, the role of specific parameters, such as the L-to-V ratio, pH, contact time, temperature, and initial vanadium concentration, must be evaluated. The adsorption process mechanism was established through kinetic, thermodynamic, and equilibrium studies. In our case, the process is physical, endothermic, spontaneous, and takes place at the interface of SiO2FexOy with V2O5. Following equilibrium studies, the maximum adsorption capacity of the SiO2FexOy material was 58.8 mg (V)/g of material.
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Affiliation(s)
- Florin Matusoiu
- Faculty of Industrial Chemistry and Environmental Engineering, Polytechnic University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, Romania
| | - Adina Negrea
- Faculty of Industrial Chemistry and Environmental Engineering, Polytechnic University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, Romania
| | - Mihaela Ciopec
- Faculty of Industrial Chemistry and Environmental Engineering, Polytechnic University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, Romania
| | - Narcis Duteanu
- Faculty of Industrial Chemistry and Environmental Engineering, Polytechnic University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, Romania
| | - Petru Negrea
- Faculty of Industrial Chemistry and Environmental Engineering, Polytechnic University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, Romania
| | - Paula Ianasi
- National Institute for Research and Development in Electrochemistry and Condensed Matter, 144th Dr. A.P. Podeanu Street, 300569 Timisoara, Romania
| | - Cătălin Ianasi
- “Coriolan Drăgulescu” Institute of Chemistry, Bv. Mihai Viteazul, No. 24, 300223 Timisoara, Romania
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Weidner E, Wójcik G, Kołodyńska D, Jesionowski T, Ciesielczyk F. Insight into the removal of vanadium ions from model and real wastewaters using surface grafted zirconia-based adsorbents: Batch experiments, equilibrium and mechanism study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 324:116306. [PMID: 36166864 DOI: 10.1016/j.jenvman.2022.116306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
This study concerns the fabrication of CTAB- and N,N-dimethyltetradecylamine-grafted zirconia and evaluation of their ability to adsorb vanadium ions. The effectiveness of ZrO2 functionalization and the different nature of the modifiers used were confirmed by differences in the porosity (ZrO2: SBET = 347 m2/g; ZrO2-CTAB: SBET = 375 m2/g, ZrO2-NH+: SBET = 155 m2/g), types of functional groups, and isoelectric points (the ZrO2 and CTAB-modified samples have IEPs = 3.8 and 3.9, ZrO2-NH+ has IEP = 7.1) of the prepared adsorbents. The designed materials were tested in batch adsorption experiments involving the removal of vanadium ions from model wastewaters at various process parameters, among which pH proved to be the most important. Based on equilibrium and kinetic evaluations, it was proved that the sorption of V(V) ions followed pseudo-second-order and intraparticle diffusion models, and the data were better fitted to the Langmuir model, suggesting the following order of the sorbents in terms of favorability for V(V) ion adsorption: ZrO2-NH+ > ZrO2 > ZrO2-CTAB. The estimated maximum monolayer capacity of ZrO2-NH+ for V(V) (87.72 mg/g) was the highest among the tested materials. Additionally, it was confirmed that adsorption of V(V) ions onto synthesized materials is a heterogeneous, exothermic, and spontaneous reaction, as evidenced by the calculated values of thermodynamic parameters. The key goals included the transfer of experimental findings obtained using model solutions to the adsorption of V(V) ions from solutions arising from the leaching process of spent catalysts. The highest adsorption efficiencies of 70.8% and 47.5% were recorded for the ZrO2-NH+ material in acidic solution; this may be related to the protonization of -NH+ groups, which favors the sorption of V(V) ions. Based on desorption tests as well as the results of infrared and X-ray photoelectron spectroscopy, irrespective of the process conditions, the physical nature of the adsorbent/adsorbate interaction was confirmed.
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Affiliation(s)
- Ewelina Weidner
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
| | - Grzegorz Wójcik
- Maria Curie-Skłodowska University, Faculty of Chemistry, Institute of Chemical Sciences, Department of Inorganic Chemistry, M. Curie-Skłodowska Sq. 2, PL-20031 Lublin, Poland
| | - Dorota Kołodyńska
- Maria Curie-Skłodowska University, Faculty of Chemistry, Institute of Chemical Sciences, Department of Inorganic Chemistry, M. Curie-Skłodowska Sq. 2, PL-20031 Lublin, Poland.
| | - Teofil Jesionowski
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
| | - Filip Ciesielczyk
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland.
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Tan S, Ouyang P, Zhang Q, Yang S, Wang H. Removal of Vanadium(IV) Ions from Aqueous Solution by Graphene Oxide. ChemistrySelect 2022. [DOI: 10.1002/slct.202202311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shi‐Ying Tan
- Institute of Nanochemistry and Nanobiology Shanghai University NO.99 Shangda Road Shanghai 200444 China
| | - Peng Ouyang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission School of Chemistry and Environment Southwest Minzu University NO. 16, South Section 1st Ring Road Chengdu 610041 Sichuan China
| | - Qiangqiang Zhang
- Institute of Nanochemistry and Nanobiology Shanghai University NO.99 Shangda Road Shanghai 200444 China
| | - Sheng‐Tao Yang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission School of Chemistry and Environment Southwest Minzu University NO. 16, South Section 1st Ring Road Chengdu 610041 Sichuan China
| | - Haifang Wang
- Institute of Nanochemistry and Nanobiology Shanghai University NO.99 Shangda Road Shanghai 200444 China
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7
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Dakroury G, El-Shazly EA, Eliwa A, MubarkEl-Azony A. Utilization of titanium nanocomposites as prospective materials for recycling of vanadium (V) from waste solutions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Efficient Vanadate Removal by Mg-Fe-Ti Layered Double Hydroxide. WATER 2022. [DOI: 10.3390/w14132090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
A series of novel layered double hydroxides (Mg-Fe-Ti-LDHs) containing Mg2+, Fe3+ and Ti4+ were prepared. The adsorption performance of Mg-Fe-Ti-LDHs on vanadate in aqueous solution was investigated and the effects of various factors on the adsorption process were examined, including initial vanadate concentration, adsorbent dosage, contact time, solution pH and coexisting ions. A preliminary discussion of the adsorption mechanism of vanadate was also presented. Results show that the adsorption efficiency of vanadate increased with the introduction of Ti4+ into the laminate of LDHs materials. The adsorption capacity of the materials also differed for different anion intercalated layers, and the Mg-Fe-Ti-LDHs with Cl− intercalation showed higher vanadate removal compared to the CO32− intercalated layer. Furthermore, Mg-Fe-Ti-CLDH showed higher vanadate removal compared to pre-calcination. The adsorption experimental data of vanadate on Mg-Fe-Ti-LDHs were consistent with the Langmuir adsorption isotherm model and the adsorption kinetics followed a pseudo-second order kinetic model. The pH of the solution significantly affected the vanadate removal efficiency. Meanwhile, coexisting ions PO43−, SO42− and NO3− exerted a significant influence on vanadate adsorption, the magnitude of the influence was related to the valence state of the coexisting anions. The possible adsorption mechanisms can be attributed to ion exchange and layered ligand exchange processes. The good adsorption capacity of Mg-Fe-Ti-LDHs on vanadate broadens the application area of functional materials of LDHs.
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Tan Y, Wan X, Zhou T, Wang L, Yin X, Ma A, Wang N. Novel Zn-Fe engineered kiwi branch biochar for the removal of Pb(II) from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127349. [PMID: 34879556 DOI: 10.1016/j.jhazmat.2021.127349] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/21/2020] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
In this study, a novel adsorbent made from kiwi branch biochar modified with Zn-Fe (KB/Zn-Fe) was compared with original biochar to the Pb(II)'s adsorptivity from waste water. The adsorbent was synthetized by liquid-phase deposition. Batches of sorption tests were performed, and the biochars' representative properties were tested. Characterizations revealed the physicochemical properties of biochars and showed that the KB/Zn-Fe composites were successfully synthesized. The Langmuir model and pseudo-second-order kinetic model were proven to satisfactorily fit the original biochar and KB/Zn-Fe. The KB/Zn-Fe showed Langmuir maximum adsorption ability to Pb (II) in aqueous solution of 161.29 mg g-1, compared with 36.76 mg g-1 for original biochar. The adsorption ability of Pb(II) decreased and the Pb(II) removal efficiency increased with increasing biochar dose. The effect of co-existence of NO3- to the absorptive capacity of KB/Zn-Fe on Pb(II) was unremarkable, but Cl- could increase the absorptive capacity. Multiple Pb(II) adsorption mechanisms by KB/Zn-Fe include surface precipitation of metal hydroxides, complexation with active functional groups and ion-exchange. This work provides guidance for future production of biochar with efficient adsorption ability, which could be used to remove Pb(II) ions from wastewater.
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Affiliation(s)
- Yuehui Tan
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Xirui Wan
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Ting Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Le Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Xianqiang Yin
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100, China.
| | - Aisheng Ma
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Nong Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture of the People's Republic of China, Tianjin 300191, China
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Khan SA, Hussain D, Abbasi N, Khan TA. Deciphering the adsorption potential of a functionalized green hydrogel nanocomposite for aspartame from aqueous phase. CHEMOSPHERE 2022; 289:133232. [PMID: 34896178 DOI: 10.1016/j.chemosphere.2021.133232] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/26/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
Herein, a functionalized green hydrogel nanocomposite based on carboxymethylated gum tragacanth and nanobentonite (GTBCH) was designed via free-radical polymerization approach for the elimination of Aspartame (AS) from wastewater. The GTBCH fabrication was validated by Fourier Transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) techniques. Central composite design (CCD) was efficaciously applied to determine the quadratic polynomial approach for predicting the adsorption capacity (qe) of AS. The optimum sequestration conditions were dosage (0.8 g L‒1), agitation time (35 min) initial AS concentration (60 mg L-1), pH (6) and temperature (308 K). The CCD results revealed that dosage of GTBCH and initial concentration have greater impact on qe followed by pH, time, and temperature. The significant adsorption capacity (392.04 mg g-1), calculated from Langmuir model, could be attributed to the stronger interactions prevalent between AS and GTBCH. Diffusion investigations depicted the uptake of AS via surface adsorption, liquid film and intraparticle diffusion, respectively. Ionic strength and real water have minor effect on the adsorption capacity demonstrating electrostatic interaction has least impact in adsorption process. The pHzpc, FTIR and XPS investigations revealed hydrogen bonding, n-π and van der Waals interactions as the principal removal mechanisms. Robust design, high adsorption capacity, eco-friendly facets along with excellent reusability indicated the GTBCH as a competent adsorbent for AS decontamination from wastewater.
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Affiliation(s)
- Suhail Ayoub Khan
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India
| | - Daud Hussain
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India
| | - Neha Abbasi
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India
| | - Tabrez Alam Khan
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India.
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Wołowicz A, Wawrzkiewicz M, Hubicki Z, Siwińska-Ciesielczyk K, Kubiak A, Jesionowski T. Enhanced removal of vanadium(V) from acidic streams using binary oxide systems of TiO2-ZrO2 and TiO2-ZnO type. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119916] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Liu J, Huang Y, Li H, Duan H. Recent advances in removal techniques of vanadium from water: A comprehensive review. CHEMOSPHERE 2022; 287:132021. [PMID: 34454227 DOI: 10.1016/j.chemosphere.2021.132021] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 08/21/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
In recent years, with the development of economy and industry, water contaminated with heavy metal has become a global environmental problem. Vanadium (V) is an emerging contaminant reported in wastewater along with the increasing mining, smelting and recovering of vanadium ores and application in many fields as a significant national strategy resource. The increasing attention has been paid to the separations of V from water due to its potential toxic to animals and human beings. In the present study, the most common V removal techniques including adsorption, microbiological treatment, chemical precipitation, solvent extraction, electrokinetic remediation, photocatalysis, coagulation and membrane filtration are presented with discussion of their advantages, limitations and the recent achievements. Several major influencing factors and mechanisms of various processes have been briefly analyzed. Some research perspectives are proposed for improving the capacities to remove V from water. The core objective of this review is to provide comprehensive information or database for the superior approach for V removal.
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Affiliation(s)
- Jianing Liu
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Yi Huang
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Geosciences, Chengdu University of Technology, China.
| | - Hanyu Li
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Haoran Duan
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
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13
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Aregay GG, Ali J, Shahzad A, Ifthikar J, Oyekunle DT, Chen Z. Application of layered double hydroxide enriched with electron rich sulfide moieties (S 2O 42-) for efficient and selective removal of vanadium (V) from diverse aqueous medium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148543. [PMID: 34465035 DOI: 10.1016/j.scitotenv.2021.148543] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/13/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
The preparation of an adsorbent with highest efficiency, selectivity and stability is usually a challenging task. Herein, we prepared a thio functionalized layered double hydroxide (LDH) denoted as S2O4 LDH by intercalating a strong reducing agent (S2O42-) in the interlayers of trimetallic LDH and was applied to capture vanadium (V(V)) oxyanions from aqueous medium of diverse conditions. The successful preparation of the adsorbent was first confirmed using XRD, FTIR, EDX and CHS analyses. The results revealed that the modified LDH showed excellent performance at a wider pH range which can avoid the tedious work of adjusting pH in actual industrial wastewater treatment. The adsorption capacity was increased with temperature and obtained 379.55 mg/g at 323 K comparing to 112.3 mg/g at 293 K. The adsorption isotherm was better fitted to Langmuir model which suggested monolayer adsorption behavior. At lower temperature (293 K), the sorption kinetics were fitted to a pseudo-first order reaction model which implied physisorption reaction while at higher temperatures (303 and 323 K), the reaction order fitted to pseudo-second order reaction model which highlighted the chemisorption reaction mechanism. As confirmed using XRD, FTIR, EDX and XPS instrumental techniques, the dominant removal mechanism of V(V) involved ion-exchange and partial reduction reactions to nontoxic and less soluble V(IV) and V(III) species due to the low valent sulfur group and followed adsorption in S2O4 LDH. The prepared adsorbent showed very good selectivity towards V(V) in the presence of different co-existing ions both in synthetic wastewater and spiked real water samples. This novel adsorbent also exhibited high recyclability and obtained >90.0% removal of V(V) after four consecutive adsorption-desorption cycles due to the unique memory effect of the LDH. We believe that this strategy provides a new direction to find highly efficient and selective materials for capturing vanadium ions from wastewater of diverse conditions.
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Affiliation(s)
- Gebremedhin G Aregay
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; College of Natural and Computational Sciences, Aksum University, Tigray, Ethiopia
| | - Jawad Ali
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| | - Ajmal Shahzad
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Jerosha Ifthikar
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Daniel T Oyekunle
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zhuqi Chen
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
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Gogoi H, Zhang R, Matusik J, Leiviskä T, Rämö J, Tanskanen J. Vanadium removal by cationized sawdust produced through iodomethane quaternization of triethanolamine grafted raw material. CHEMOSPHERE 2021; 278:130445. [PMID: 33838423 DOI: 10.1016/j.chemosphere.2021.130445] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 03/05/2021] [Accepted: 03/28/2021] [Indexed: 05/09/2023]
Abstract
In this study, two-step surface modification of sawdust using triethanolamine (at 180 °C) and iodomethane (at 42 °C) was performed to produce a novel quaternized biosorbent, TEA-I-SD. The characterization studies revealed significant morphological changes in the sawdust and successful quaternization with a nitrogen content of 5.75%. The highest vanadium removal (96.2%) was achieved at pH 4 (dosage 1 g/L, initial vanadium concentration 19.1 mg/L). Equilibrium was achieved within 8 h of contact time and the adsorption kinetics were well fitted with the pseudo-second-order model. Both film diffusion and intra-particle diffusion contributed to the adsorption process, while the latter was the rate-limiting step. The maximum vanadium adsorption capacity of TEA-I-SD (35.0 mg/g, pH 4) was close to the theoretical value obtained from the Langmuir model. The best fit was achieved with the Redlich-Peterson model, exhibiting a monolayer adsorption phenomenon. Tests with real mine water containing 11 mg/L of vanadium also confirmed its high removal (91.3%, dosage 1 g/L) using TEA-I-SD at pH 4. The TEA-I-SD could be reused three times without significant capacity loss after regeneration, although the desorption efficiency was rather low (synthetic solution: 38.5-40.5% and mine water: 26.2-43.1%).
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Affiliation(s)
- Harshita Gogoi
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
| | - Ruichi Zhang
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
| | - Jakub Matusik
- Department of Mineralogy, Petrography and Geochemistry, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Krakow, Poland
| | - Tiina Leiviskä
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland.
| | - Jaakko Rämö
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
| | - Juha Tanskanen
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
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15
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Sharififard H, Rezvanpanah E. Ultrasonic-assisted synthesis of SiO 2 nanoparticles and SiO 2/chitosan/Fe nanocomposite and their application for vanadium adsorption from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:11586-11597. [PMID: 33125678 DOI: 10.1007/s11356-020-11346-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
The husk of brown rice, as a source of silica, was applied to synthesize natural SiO2 nanoparticles via sonochemical method. SiO2/CH/Fe nanocomposite was synthesized from SiO2, chitosan (prepared from shrimp shells via sonochemical method), and iron functional groups and detected using BET, EDX-SEM, and FTIR techniques. These natural-based nanostructures (SiO2 and SiO2/CH/Fe) have been applied for vanadium adsorption. The influences of initial pH, initial concentration, and adsorption time were studied via a batch process. The analysis of the kinetics data indicated that the chemical adsorption is predominant. The analysis of the equilibrium data indicated the single layer and exothermic adsorption process. The mono-layer adsorption capacity of SiO2/CH/Fe was 199.540 mg g-1. The performance of SiO2/CH/Fe in a continuous column system was investigated in four adsorption and desorption cycles. Results showed that SiO2/CH/Fe nanocomposite synthesized with the sonochemical method is a candidate with high adsorption ability for use as an industrial adsorbent.
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Affiliation(s)
| | - Elham Rezvanpanah
- Polymer Engineering Department, Amirkabir University of Technology, Tehran, I.R, Iran
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16
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Fan C, Chen N, Qin J, Yang Y, Feng C, Li M, Gao Y. Biochar stabilized nano zero-valent iron and its removal performance and mechanism of pentavalent vanadium(V(V)). Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124882] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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17
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Yang JY, Luo HQ, Zhu YY, Yu YQ, He WY, Wu ZZ, Wang B. Adsorption-desorption and co-migration of vanadium on colloidal kaolinite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:17910-17922. [PMID: 32166686 DOI: 10.1007/s11356-020-07845-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
Vanadium (V) pollution in soil has been widely noted, while knowledge about the effect of soil colloid on migration of V is scarce. Batch adsorption-desorption and transportation of the colloid-adsorbed V in columns packed with quartz sand under various environment conditions were carried out to explore the retention and transportation of V by colloidal kaolinite. Batch adsorption-desorption studies show that the adsorption of V by the colloidal kaolinite was mainly specific adsorption and redox played a limited role in the adsorption process. The maximum adsorption capacity of the colloidal kaolinite was 712.4 mg g-1, and about 5.9-8.7% of the adsorbed V could be desorbed. Both the adsorption-desorption and migration of V with colloidal kaolinite were highly ambient condition dependent. The column studies show that V was highly mobile in the saturated porous media. An easier transfer of V with an increase in pH, IS, and velocity of flow was noted. However, the increase of IS lead to the blockage of the colloidal kaolinite transportation. The recovery rate of the colloidal kaolinite at pH 7 and 9 was 2.0 and 2.1 times that at pH 5, respectively. The migration of colloidal-adsorbed V in sand column preceded that of V ion, but more colloidal-bound V than V ion remained in the column. Lack of consideration of the combination and co-transportation of V and colloidal kaolinite will lead to an overestimation of the risk of V to deeper soil profiles and groundwater. Graphical abstract.
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Affiliation(s)
- Jin-Yan Yang
- College of Architecture and Environment & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, 610065, China
- Key Laboratory of Environment Remediation and Ecological Health (Zhejiang University), Ministry of Education, Hangzhou, 310058, China
| | - Hou-Qiao Luo
- College of Architecture and Environment & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, 610065, China
| | - Yan-Yuan Zhu
- College of Architecture and Environment & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, 610065, China
| | - Ya-Qi Yu
- College of Architecture and Environment & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, 610065, China
| | - Wen-Yan He
- College of Architecture and Environment & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, 610065, China
| | - Zhen-Zhong Wu
- College of Architecture and Environment & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, 610065, China
| | - Bin Wang
- College of Architecture and Environment & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, 610065, China.
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Jana S, Ray J, Jana D, Mondal B, Bhanja SK, Tripathy T. Removal of vanadium (IV) from water solution by sulfated Katira gum-cl-poly (acrylic acid) hydrogel. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Meng R, Chen T, Zhang Y, Lu W, Liu Y, Lu T, Liu Y, Wang H. Development, modification, and application of low-cost and available biochar derived from corn straw for the removal of vanadium(v) from aqueous solution and real contaminated groundwater. RSC Adv 2018; 8:21480-21494. [PMID: 35539926 PMCID: PMC9080952 DOI: 10.1039/c8ra02172d] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/04/2018] [Indexed: 12/04/2022] Open
Abstract
In this work, a low-cost and available material for use as a permeable reactive barrier (PRB) to prevent vanadium in groundwater from leaking into river water was developed. Three modified biochars were prepared from available corn straw pretreated with CsCl, Zn(ii), and Zr(iv) to enhance ion exchange capacity (IEC) and specific surface area, and were designated as Cs-BC, Zn-BC, and Zr-BC, respectively. These materials were characterized via IEC, N2 adsorption–desorption, Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) analyses. The Langmuir isotherm model could be applied for the best fit for the adsorption data of Cs-BC and Zr-BC, indicating that vanadium(v) sorption occurred in a monolayer. The vanadium(v) adsorption capacities of Cs-BC, Zn-BC, and Zr-BC were 41.07, 28.46, and 23.84 mg g−1, respectively, which were 3.22–5.55 times higher than that of commercial activated carbon (AC) (7.40 mg g−1), probably because of their higher IECs and specific surface areas after modification. In addition, no heavy metal leaching was found from the modified biochars during the adsorption processes when pH > 2. According to the FTIR and XRD patterns, the adsorption mechanism of Cs-BC and Zr-BC was ion exchange, whereas for Zn-BC, it was mainly surface precipitation and electrostatic attraction. The adsorption of vanadium(v) onto the modified biochars was independent of pH in the range of 4.0 to 8.0. Furthermore, the removal efficiency of the vanadium(v) in real contaminated groundwater from the catchment of the Chaobei River by Zn-BC reached 100% at a dose of 4 g L−1. Hence, modified biochars are promising PRB filling materials for removing vanadium(v) from contaminated groundwater. In this work, a low-cost and available material for use as a permeable reactive barrier (PRB) to prevent vanadium in groundwater from leaking into river water was developed.![]()
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Affiliation(s)
- Ruihong Meng
- School of Environment
- Tsinghua University
- Beijing 100084
- P. R. China
- Key Laboratory for Solid Waste Management and Environment Safety
| | - Tan Chen
- College of Life and Environmental Sciences
- Minzu University of China
- Beijing 100081
- P. R. China
| | - Yaxin Zhang
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Wenjing Lu
- School of Environment
- Tsinghua University
- Beijing 100084
- P. R. China
- Key Laboratory for Solid Waste Management and Environment Safety
| | - Yanting Liu
- School of Environment
- Tsinghua University
- Beijing 100084
- P. R. China
- Key Laboratory for Solid Waste Management and Environment Safety
| | - Tianchu Lu
- CECEP Clean Technology Development Co., Ltd
- Beijing 100083
- P. R. China
| | - Yanjun Liu
- School of Environment
- Tsinghua University
- Beijing 100084
- P. R. China
- Key Laboratory for Solid Waste Management and Environment Safety
| | - Hongtao Wang
- School of Environment
- Tsinghua University
- Beijing 100084
- P. R. China
- Key Laboratory for Solid Waste Management and Environment Safety
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Roca Jalil ME, Baschini M, Sapag K. Removal of Ciprofloxacin from Aqueous Solutions Using Pillared Clays. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1345. [PMID: 29168798 PMCID: PMC5744280 DOI: 10.3390/ma10121345] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/15/2017] [Accepted: 11/20/2017] [Indexed: 12/14/2022]
Abstract
Emerging contaminants in the environment have caused enormous concern in the last few decades, and among them, antibiotics have received special attention. On the other hand, adsorption has shown to be a useful, low-cost, and eco-friendly method for the removal of this type of contaminants from water. This work is focused on the study of ciprofloxacin (CPX) removal from water by adsorption on pillared clays (PILC) under basic pH conditions, where CPX is in its anionic form (CPX-). Four different materials were synthetized, characterized, and studied as adsorbents of CPX (Al-, Fe-, Si-, and Zr-PILC). The highest CPX adsorption capacities of 100.6 and 122.1 mg g-1 were obtained for the Si- and Fe-PILC (respectively), and can be related to the porous structure of the PILCs. The suggested adsorption mechanism involves inner-sphere complexes formation as well as van der Waals interactions between CPX- and the available adsorption sites on the PILC surfaces.
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Affiliation(s)
- Maria Eugenia Roca Jalil
- Grupo de Estudios en Materiales Adsorbentes, Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas-CONICET, Universidad Nacional del Comahue, Buenos Aires, 1400 8300 Neuquén, Argentina.
| | - Miria Baschini
- Grupo de Estudios en Materiales Adsorbentes, Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas-CONICET, Universidad Nacional del Comahue, Buenos Aires, 1400 8300 Neuquén, Argentina.
| | - Karim Sapag
- Laboratorio de Sólidos Porosos, Instituto de Física Aplicada-CONICET, Universidad Nacional de San Luis, Ejército de los Andes 950, Bloque II, 2do piso, CP 5700 San Luis, Argentina.
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21
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Sharififard H, Pepe F, Aprea P, de Gennaro B. Chemical modification of activated carbon surface with iron functional groups for efficient separation of vanadium: batch and column study. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3004-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Luo X, Yu L, Wang C, Yin X, Mosa A, Lv J, Sun H. Sorption of vanadium (V) onto natural soil colloids under various solution pH and ionic strength conditions. CHEMOSPHERE 2017; 169:609-617. [PMID: 27912185 DOI: 10.1016/j.chemosphere.2016.11.105] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/17/2016] [Accepted: 11/20/2016] [Indexed: 06/06/2023]
Abstract
Batch sorption kinetics and isothermal characteristics of V(V) were investigated on three natural soil colloids (manual loessial soil colloid (MSC), aeolian sandy soil colloid (ASC), and cultivated loessial soil colloid (CSC)) under various solution pH and ionic strength (IS) conditions. Colloids were characterized by atomic force microscopy (AFM), X-ray diffraction (XRD), and fourier transform infrared spectroscopy (FTIR). AFM micrographs showed CSC with an aggregated shape with larger particle diameter as compared with ASC and MSC. XRD spectra revealed the presence of different minerals in natural soil colloids including biotite, kaolinite, calcite and quartz, which might contribute to sorption process. The sorption ability decreased with increase of colloidal particle size. The sorption was mainly attributed to complexation by active carboxylate and alcohol groups of colloidal components. Sorption kinetics and isotherms of V(V) onto natural soil colloids were best fitted with Pseudo-second-order and Freundlich models. Langmuir model indicated that sorption capacity of MSC and ASC was comparable (285.7 and 238.1 mg g-1); however, CSC exhibited the lowest sorption capacity (41.5 mg g-1) due to its larger particle diameter and aggregated shape. The maximum V(V) sorption capacity reached plateau values at a solution pH ranged between 5.0 and 9.0 for MSC and ASC, and 6.0-8.0 for CSC. Sorption capacity of V(V) onto natural soil colloids decreased with increasing IS. Based on result of this study we can conclude that sorption of V(V) onto natural soil colloids is pH- and IS-dependent. These findings provide insights on the remediation of vanadium-contaminated soils.
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Affiliation(s)
- Xiuhua Luo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Lin Yu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Changzhao Wang
- Shaanxi Entry-Exit Inspection and Quarantine Bureau, Xian, 710068, China
| | - Xianqiang Yin
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China.
| | - Ahmed Mosa
- Soils Department, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Jialong Lv
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China.
| | - Huimin Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China.
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23
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Yang J, Zhou M, Hu Y, Yang W. Cost-effective copper removal by electrosorption powered by microbial fuel cells. Bioprocess Biosyst Eng 2016; 39:511-9. [DOI: 10.1007/s00449-015-1533-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 12/21/2015] [Indexed: 10/22/2022]
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24
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Min Y, Zhou Y, Zhang M, Qiao H, Huang Q, Ma T. Removal of ionic liquid by engineered bentonite from aqueous solution. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.02.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Padilla-Rodríguez A, Hernández-Viezcas JA, Peralta-Videa JR, Gardea-Torresdey JL, Perales-Pérez O, Román-Velázquez FR. Synthesis of protonated chitosan flakes for the removal of vanadium(III, IV and V) oxyanions from aqueous solutions. Microchem J 2015. [DOI: 10.1016/j.microc.2014.07.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Doğan V, Aydın S. Vanadium(V) Removal by Adsorption onto Activated Carbon Derived from Starch Industry Waste Sludge. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2013.879312] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Lin T, Li X, Xu Y, Yin X, Zhang D, Zhu Z. SEM-EDX and Equilibrium Study of Modified Bentonite in Silicate Adsorption. CHEM LETT 2014. [DOI: 10.1246/cl.131151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tao Lin
- College of Light Industry and Energy, Shaanxi University of Science and Technology
| | - Xue Li
- College of Light Industry and Energy, Shaanxi University of Science and Technology
| | - Yongjian Xu
- College of Light Industry and Energy, Shaanxi University of Science and Technology
- Post-doctoral Research Center of Materials Science and Engineering, Shaanxi University of Science and Technology
- Guizhou Chitianhua Papermaking Company Limited
| | - Xuefeng Yin
- College of Light Industry and Energy, Shaanxi University of Science and Technology
| | | | - Zhenfeng Zhu
- Post-doctoral Research Center of Materials Science and Engineering, Shaanxi University of Science and Technology
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28
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Aguiar JE, Bezerra BTC, Siqueira ACA, Barrera D, Sapag K, Azevedo DCS, Lucena SMP, Silva IJ. Improvement in the Adsorption of Anionic and Cationic Dyes from Aqueous Solutions: A Comparative Study using Aluminium Pillared Clays and Activated Carbon. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2013.862720] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Zhang Y, Tang Y, Qiu Q, Chen Y, Sun Y, Wan P, Yang XJ. Electrochemically Enhanced Adsorption of Aluminum from Sodium Carbonate Solution by Activated Carbon Fibers. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401290v] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanling Zhang
- Beijing
Key Laboratory of Membrane Separation Process and Technology, and ‡National Fundamental
Research Laboratory of New Hazardous Chemicals Assessment and Accident
Analysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yang Tang
- Beijing
Key Laboratory of Membrane Separation Process and Technology, and ‡National Fundamental
Research Laboratory of New Hazardous Chemicals Assessment and Accident
Analysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Qian Qiu
- Beijing
Key Laboratory of Membrane Separation Process and Technology, and ‡National Fundamental
Research Laboratory of New Hazardous Chemicals Assessment and Accident
Analysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yongmei Chen
- Beijing
Key Laboratory of Membrane Separation Process and Technology, and ‡National Fundamental
Research Laboratory of New Hazardous Chemicals Assessment and Accident
Analysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yanzhi Sun
- Beijing
Key Laboratory of Membrane Separation Process and Technology, and ‡National Fundamental
Research Laboratory of New Hazardous Chemicals Assessment and Accident
Analysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Pingyu Wan
- Beijing
Key Laboratory of Membrane Separation Process and Technology, and ‡National Fundamental
Research Laboratory of New Hazardous Chemicals Assessment and Accident
Analysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - X. Jin Yang
- Beijing
Key Laboratory of Membrane Separation Process and Technology, and ‡National Fundamental
Research Laboratory of New Hazardous Chemicals Assessment and Accident
Analysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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30
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Yang J, Zhao Y, Zhang C, Hu Y, Zhou M. Electrosorption driven by microbial fuel cells without electric grid energy consumption for simultaneous phenol removal and wastewater treatment. Electrochem commun 2013. [DOI: 10.1016/j.elecom.2013.05.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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31
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Sturini M, Rivagli E, Maraschi F, Speltini A, Profumo A, Albini A. Photocatalytic reduction of vanadium(V) in TiO₂ suspension: chemometric optimization and application to wastewaters. JOURNAL OF HAZARDOUS MATERIALS 2013; 254-255:179-184. [PMID: 23611800 DOI: 10.1016/j.jhazmat.2013.03.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 03/07/2013] [Accepted: 03/19/2013] [Indexed: 06/02/2023]
Abstract
The photocatalytic reduction of V(V) to V(IV) over TiO₂ in aqueous solution is presented. Experiments were undertaken on air-equilibrated water spiked with V(V) (0.6-20 mgL(-1)), under UV-A or solar light. A chemometric study was performed to optimize the reduction yield, by considering the most important variables recognized to affect the photocatalytic process. Among pH, irradiation time and catalyst concentration, the two latter proved to be determinant. The good yields achieved (up to 98%), along with the possibility of working in aerated solution, make this procedure simple, rapid and efficient. Although a deep insight on the photochemical mechanisms was beyond our scope, the role of electron donors was investigated, proving the efficiency of 2-propanol, citric acid and formic acid in the acceleration and improvement of V(V) conversion. After irradiation, total vanadium and aqueous V(V) and V(IV) after solid-phase separation on Chelex-100 resin, were determined by inductively coupled plasma optical emission spectroscopy (ICP-OES). The procedure was applied to contaminated wastewaters, combining remediation and possible vanadium recovery as V(IV).
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Affiliation(s)
- Michela Sturini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy.
| | - Elisa Rivagli
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Federica Maraschi
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Andrea Speltini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy.
| | - Antonella Profumo
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Angelo Albini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
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32
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Zubot W, MacKinnon MD, Chelme-Ayala P, Smith DW, Gamal El-Din M. Petroleum coke adsorption as a water management option for oil sands process-affected water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2012; 427-428:364-372. [PMID: 22575375 DOI: 10.1016/j.scitotenv.2012.04.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 04/06/2012] [Accepted: 04/09/2012] [Indexed: 05/31/2023]
Abstract
Water is integral to both operational and environmental aspects of the oil sands industry. A water treatment option based on the use of petroleum coke (PC), a by-product of bitumen upgrading, was examined as an opportunity to reduce site oil sands process-affected water (OSPW) inventories and net raw water demand. Changes in OSPW quality when treated with PC included increments in pH levels and concentrations of vanadium, molybdenum, and sulphate. Constituents that decreased in concentration after PC adsorption included total acid-extractable organics (TAO), bicarbonate, calcium, barium, magnesium, and strontium. Changes in naphthenic acids (NAs) speciation were observed after PC adsorption. A battery of bioassays was used to measure the OSPW toxicity. The results indicated that untreated OSPW was toxic towards Vibrio fischeri and rainbow trout. However, OSPW treated with PC at appropriate dosages was not acutely toxic towards these test organisms. Removal of TAO was found to be an adsorption process, fitting the Langmuir and Langmuir-Freundlich isotherm models. For TAO concentrations of 60 mg/L, adsorption capacities ranged between 0.1 and 0.46 mg/g. This study demonstrates that freshly produced PC from fluid cokers provides an effective treatment of OSPW in terms of key constituents' removal and toxicity reduction.
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Affiliation(s)
- Warren Zubot
- Syncrude Canada Ltd., Research and Development, Edmonton, Alberta, Canada T6N 1H4
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Sarı A, Şahinoğlu G, Tüzen M. Antimony(III) Adsorption from Aqueous Solution Using Raw Perlite and Mn-Modified Perlite: Equilibrium, Thermodynamic, and Kinetic Studies. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300243n] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ahmet Sarı
- Department
of Chemistry, Gaziosmanpasa University, 60250, Tokat, Turkey
| | - Güngör Şahinoğlu
- Department
of Chemistry, Gaziosmanpasa University, 60250, Tokat, Turkey
| | - Mustafa Tüzen
- Department
of Chemistry, Gaziosmanpasa University, 60250, Tokat, Turkey
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The Modified Bentonite Performance in Adsorption Process of Organic and Inorganic Contaminants from Aqueous Phase. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2011. [DOI: 10.1380/ejssnt.2011.458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Anirudhan TS, Bringle CD, Rijith S. Removal of uranium(VI) from aqueous solutions and nuclear industry effluents using humic acid-immobilized zirconium-pillared clay. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2010; 101:267-276. [PMID: 20045229 DOI: 10.1016/j.jenvrad.2009.12.001] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 12/07/2009] [Accepted: 12/07/2009] [Indexed: 05/28/2023]
Abstract
Removal of uranium [U(VI)] from aqueous solutions with humic acid-immobilized zirconium-pillared clay (HA-Zr-PILC) was investigated using a batch adsorption technique. The adsorbent was characterized using XRD, FTIR, SEM, TG/DTG, surface area analyzer and potentiometric titration. The effects of pH, contact time, initial concentration, adsorbent dose, and adsorption isotherm on the removal process were evaluated. A maximum removal of 97.6+/-2.1 and 94.7+/-3.3% was observed for an initial concentration of 50 and 100 mg L(-1), respectively at pH 6.0 and an adsorbent dose of 2.0 g L(-1). Equilibrium was achieved in approximately 180 min. The mechanism for the removal of U(VI) ions by HA-Zr-PILC was based on an ion exchange reaction. The experimental kinetic and isotherm data were analyzed using a second-order kinetic equation and Langmuir isotherm model, respectively. The monolayer adsorption capacity for U(VI) removal was found to be 132.68+/-5.04 mg g(-1). An increase of temperature of the medium caused an increase in metal adsorption. Complete removal (approximately = 100%) of U(VI) from 1.0 L of a simulated nuclear industry effluent sample containing 10.0 mg U(VI) ions was possible with 1.5 g of HA-Zr-PILC. The adsorbent was suitable for repeated use (over 4 cycles) without any noticeable loss of capacity.
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Affiliation(s)
- T S Anirudhan
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum-695581, India.
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Yeom BY, Lee CS, Hwang TS. A new hybrid ion exchanger: effect of system parameters on the adsorption of vanadium (V). JOURNAL OF HAZARDOUS MATERIALS 2009; 166:415-420. [PMID: 19118945 DOI: 10.1016/j.jhazmat.2008.11.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2008] [Revised: 09/30/2008] [Accepted: 11/14/2008] [Indexed: 05/27/2023]
Abstract
The hybrid ion exchanger consisted of PONF-g-GMA anion fibrous exchanger and IRA-96 bead-type anion exchanger was developed by combining different types of layers with hot-melt adhesive. Its ion exchange capacity and the pressure drop with flow rate of water were measured and the adsorption of vanadium (V) ions on the hybrid ion exchanger was evaluated with various process parameters such as pH, initial concentration, and temperature. It was observed that the adsorption kinetics of vanadium (V) ions on the hybrid ion exchanger could be analyzed with pseudo-second-order model.
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Affiliation(s)
- Bong-Yeol Yeom
- Nonwovens Cooperative Research Center, College of Textiles, North Carolina State University, Raleigh, NC 27695-8301, USA
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Cao F, Bai P, Li H, Ma Y, Deng X, Zhao C. Preparation of polyethersulfone-organophilic montmorillonite hybrid particles for the removal of bisphenol A. JOURNAL OF HAZARDOUS MATERIALS 2009; 162:791-798. [PMID: 18597933 DOI: 10.1016/j.jhazmat.2008.05.102] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Revised: 04/16/2008] [Accepted: 05/22/2008] [Indexed: 05/26/2023]
Abstract
Polyethersulfone (PES)-organophilic montmorillonite (OMMT) hybrid particles, with various proportions of OMMT, were prepared by using a liquid-liquid phase separation technique, and then were used for the removal of bisphenol A (BPA) from aqueous solution. The adsorbed BPA amounts increased significantly when the OMMT were embedded into the particles. The structure of the particle was characterized by using scanning electron microscopy (SEM); and these particles hardly release small molecules below 250 degrees C which was testified by using thermogravimetric analysis (TGA). The experimental data of BPA adsorption were adequately fitted with Langmuir equations. Three simplified kinetics model including the pseudo-first-order (Lagergren equation), the pseudo-second-order, and the intraparticle diffusion model were used to describe the adsorption process. Kinetic studies showed that the adsorbed BPA amount reached an equilibrium value after 300 min, and the experimental data could be expressed by the intraparticular mass transfer diffusion model. Furthermore, the adsorbed BPA could be effectively removed by ethanol, which indicated that the hybrid particles could be reused. These results showed that the PES-OMMT hybrid particles have the potential to be used in the environmental application.
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Affiliation(s)
- Fuming Cao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, PR China
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Anirudhan TS, Radhakrishnan PG. Chromium(III) removal from water and wastewater using a carboxylate-functionalized cation exchanger prepared from a lignocellulosic residue. J Colloid Interface Sci 2007; 316:268-76. [PMID: 17905262 DOI: 10.1016/j.jcis.2007.08.051] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 08/17/2007] [Accepted: 08/27/2007] [Indexed: 10/22/2022]
Abstract
This study concerns with the development of a new cation exchanger (SDGPMASPCOOH) carrying spacer (SP) group [CONH(CH(2))(2)NHCO(CH(2))(2)] and carboxylate functional group at the chain end. The preparation process was carried out through graft copolymerization of methacrylic acid onto sawdust, SD (a lignocellulosic residue) using ceric ammonium nitrate as an initiator. The poly(methacrylic acid) grafted SD (SDGPMA) was subsequently treated with thionyl chloride followed by ethylenediamine (transmidation) and succinic anhydride (carboxyfunctionalization) treatments. Infrared spectroscopy and potentiometric titrations were used to confirm graft copolymer formation and carboxylate functionalization. The effectiveness of the SDGPMASPCOOH in removing Cr(III) from water and wastewater was evaluated by the batch technique. The influence of different experimental parameters such as solution pH, contact time, absorbent dose, Cr(III) concentration and temperature on removal process was evaluated. The maximum Cr(III) removal was observed at the initial pH of 7.0. The Cr(III) was removed by SDGPMASPCOOH up to 99.3 and 92.6% from an initial concentration of 10 and 25 mg/L, respectively, at pH 7.0. Equilibrium time was reached within 4 h. Kinetic data were analyzed using the pseudo-first-order, pseudo-second-order and Elovich equations. The data fitted very well to the pseudo-second-order rate expression. The Langmuir, Freundlich and Temkin equations were applied to the experimental isotherm data and the Langmuir model was found to be in better correlation with the experimental data. The monolayer adsorption capacity for Cr(III) removal was found to be 36.63 mg/g. The adsorption efficiency towards Cr(III) removal was tested using simulated tannery wastewater. The adsorbed Cr(III) on SDGPMASPCOOH can be recovered by treating with 0.1 M HCl. Four adsorption/desorption cycles were performed without significant decrease in removal capacity. The results showed that SDGPMASPCOOH developed in this study exhibited considerable adsorption potential for application in removal of Cr(III) from water and wastewaters.
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Affiliation(s)
- T S Anirudhan
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum 695 581, India.
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Anirudhan TS, Suchithra PS. Adsorptive Characteristics of Tannin Removal from Aqueous Solutions and Coir Industry Effluents Using Calcined and Uncalcined Hydrotalcites. Ind Eng Chem Res 2007. [DOI: 10.1021/ie061519s] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thayyath S. Anirudhan
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum 695 581, India
| | - Padmajan S. Suchithra
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum 695 581, India
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Karamanis D, Assimakopoulos PA. Efficiency of aluminum-pillared montmorillonite on the removal of cesium and copper from aqueous solutions. WATER RESEARCH 2007; 41:1897-906. [PMID: 17374545 DOI: 10.1016/j.watres.2007.01.053] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2006] [Revised: 01/30/2007] [Accepted: 01/30/2007] [Indexed: 05/14/2023]
Abstract
Aluminum-pillared-layered montmorillonites (PILMs) were tested for their potential application in the removal of copper or cesium from aqueous solutions. By varying the initial conditions, several PILMs were prepared and characterized by means of X-ray fluorescence (XRF), proton induced gamma-ray emission (PIGE), X-ray diffraction (XRD) and sorption isotherms. Uptake of metals was studied by means of XRF spectrometry for copper sorption or gamma-ray spectrometry for cesium, using 137Cs as radiotracer. The sorption kinetics and capacity of PILMs were determined in relation to the effects of factors such as the initial metal concentration, initial pH of the solution and the presence of competitive cations. Kinetic studies showed that an equilibrium time of few minutes was needed for the adsorption of metal ions on PILMs. A pseudo-first-order equation was used to describe the sorption process for either copper or cesium. The most effective pH range for the removal of copper and cesium was found to be 4.0-6.0 and 3.0-8.0, respectively. Cesium sorption isotherms were best represented by a two-site Langmuir model while copper isotherms followed the Freundlich or the two-site Langmuir model. Cesium sorption experiments with inorganic or organic competitive cations as blocking agents revealed that the high selective sites of PILMs for cesium sorption (1-2% of total) are surface and edge sites in addition to interlayer exchange sites. In copper sorption, the two sites were determined as interlayer sites of PILMs after restoring their cation exchange capacity and sites associated with the pillar oxides.
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Affiliation(s)
- D Karamanis
- Department of Physics, The University of Ioannina, 45110 Ioannina, Greece.
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Han Y, Quan X, Chen S, Zhao H, Cui C, Zhao Y. Electrochemically enhanced adsorption of phenol on activated carbon fibers in basic aqueous solution. J Colloid Interface Sci 2006; 299:766-71. [PMID: 16600273 DOI: 10.1016/j.jcis.2006.03.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Revised: 03/03/2006] [Accepted: 03/04/2006] [Indexed: 10/24/2022]
Abstract
Electrosorption isotherms and thermodynamics of phenol on activated carbon fibers (ACFs) in basic solution, as well as the factors (bias potential, initial concentration, and electrolyte) affecting adsorption/electrosorption kinetics, were investigated. The kinetics, which followed the Lagergren adsorption rate law, exhibited a variety of responses depending on bias potential, initial concentration, and electrolyte. The electrosorption isotherms were in agreement with the classical models of Langmuir and Freundlich, but the former gave more satisfactory correlation coefficients. With electrosorption at a bias potential of 700 mV from the basic solution, a nearly 10-fold enhancement of maximum adsorption capacity was achievable. The electrosorption free energy (DeltaG(ads)), enthalpy (DeltaH(ads)), and entropy (DeltaS(ads)) of phenol on the ACFs were calculated from adsorption isotherms at different temperatures. The results indicated that electrosorption of phenol in basic solution was spontaneous and exothermic. Furthermore, it was assessed that electrosorption occurred by dipole-dipole interaction with DeltaH(ads) of -20.14 kJ mol(-1) besides suppositional electrostatic interaction.
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Affiliation(s)
- Yanhe Han
- School of Environmental and Biological Science & Technology, Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Dalian 116024, China
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