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Li J, Li X, Ma S, Zhao W, Xie W, Ma J, Yao Y, Wei W. Comparing the influence of humic/fulvic acid and tannic acid on Cr(VI) adsorption onto polystyrene microplastics: Evidence for the formation of Cr(OH) 3 colloids. CHEMOSPHERE 2022; 307:135697. [PMID: 35843429 DOI: 10.1016/j.chemosphere.2022.135697] [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: 06/12/2022] [Revised: 07/01/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
Microplastics (MPs) can act as vectors for various contaminants in the aquatic environment. Although some research has investigated the adsorption characteristics and influencing factors of metals/organic molecules on MPs, the effects of dissolved organic matter (DOM) (which are ubiquitous active species in ecosystems) on metal oxyanions such as Cr(VI) capture by MPs are largely unknown. This study explored the adsorption behaviors and mechanisms of Cr(VI) oxyanions onto polystyrene (PS) MPs using batch adsorption experiments and multiple spectroscopic methods. The effects of representative DOM components (i.e., humic acid (HA), fulvic acid (FA) and tannic acid (TA)) on Cr(VI) capture by PS were particularly studied. Results revealed a significantly enhanced adsorption of Cr(VI) on PS in the presence of TA. The Cr(VI) adsorption capacity was increased from 2876 μg g-1 to 4259 μg g-1 and 5135 μg g-1 when the TA concentrations raised from 0 to 10 and 20 mg L-1, respectively. Combined microscopic and spectroscopic investigations revealed that Cr(VI) was reduced to Cr(III) by TA and formed stable Cr(OH)3 colloids on PS surfaces. Contrarily, HA and FA inhibited Cr(VI) adsorption onto PS, especially at pH > 2.0 and higher DOM concentrations, due to site competition and electrostatic repulsion. Increase in pH was found to reduce zeta potentials of MPs, resulting in inhibited Cr(VI) adsorption. The adsorbed Cr(VI) declined with increasing ionic strength, implying that outer-sphere surface complexation affected the adsorption process in the presence of DOM. These new findings improved our fundamental understanding of the fate of Cr(VI) and MPs in DOM-rich environmental matrices.
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Affiliation(s)
- Junsuo Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
| | - Xinying Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing, 210023, China
| | - Shoucheng Ma
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing, 210023, China
| | - Wei Zhao
- School of Materials Engineering, Changshu Institute of Technology, Changshu, 215500, China
| | - Wenming Xie
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Jianqing Ma
- School of Civil Engineering and Architecture, Ningbo Institute of Technology, Zhejiang University, Ningbo, 315100, China
| | - Yijun Yao
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Wei
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China.
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Aravind MK, Kappen J, Narayanamoorthi E, Sanjaykumar A, Varalakshmi P, Arockiadoss T, John SA, Ashokkumar B. Bioengineered magnetic graphene oxide microcomposites for bioremediation of chromium in ex situ - A novel strategy for aggrandized recovery by electromagnetic gadgetry. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 308:119675. [PMID: 35753546 DOI: 10.1016/j.envpol.2022.119675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 06/01/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Novel magnetic microcomposites consisting of graphene oxide and iron oxide was synthesized to immobilize metabolically versatile Paracoccus sp. MKU1 and Leucobacter sp. AA7 and tested for the simultaneous adsorption and enhanced biological detoxification of hexavalent chromium (Cr(VI)) from tannery wastewater. This study reports highest chromium adsorption of 272.6 mg/g and 179.3 mg/g with complete reduction of Cr(VI) to Cr(III) by the microcomposites of AA7 and MKU1 from wastewater in a bioreactor (10 L) at large-scale for first time in ex situ. Furthermore, both the microcomposites displayed an enhanced detoxification of tannery wastewater by reducing various physicochemical conditions such as ammonia, nitrate, TDS, fluoride, CaCO3, Ca, Mg, NO3 and SO2 under the permissible limits. Use of electromagnetic device for magnetic microcomposites recovery from bioreactor yielded a maximum of 88% and 80.6% recovery for AA7 and MKU1, respectively. The rate of chromium recuperation achieved following desorption from the microcomposites of AA7 and MKU1 was 90.71% and 93.97%, respectively. Thus, the multifarious benefits including adsorption, metabolic detoxification, recovery, and recuperation by single functional microcomposites seems to be an intriguing and profitable approach for practicing in real-time operations to effectively remove heavy metals from the contaminated wastewater for environmental protection.
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Affiliation(s)
- Manikka Kubendran Aravind
- Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | - Jincymol Kappen
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram, Tamil Nadu, India
| | - Eswaran Narayanamoorthi
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram, Tamil Nadu, India
| | - Ashokkumar Sanjaykumar
- Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Perumal Varalakshmi
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | | | - Swamidoss Abraham John
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram, Tamil Nadu, India
| | - Balasubramaniem Ashokkumar
- Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu, India.
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3
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Frescura LM, de Menezes BB, Lütke SF, Funari Junior RA, Dotto GL, da Rosa MB. Reviewing variables and their implications affecting adsorption of Cr(VI) onto activated carbon: an in-depth statistical case study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:49832-49849. [PMID: 35218491 DOI: 10.1007/s11356-022-19169-z] [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: 12/01/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Removal of Cr(VI) from the aqueous phase using numerous activated carbons (AC) has been broadly studied in the last decades. Nevertheless, the diversity of activation methods, AC properties, and adsorption conditions precludes the standardization of specific characteristics required to achieve better adsorption results. This work reviewed the pertinent literature on Cr(VI) adsorption onto AC published over the past four decades. Pearson's correlation matrix and principal component analysis (PCA) assisted in identifying the parameters and AC characteristics that have the greatest influence on the maximum adsorption capacity (qm). Two hundred thirty-six adsorption assays were found reporting data on 110 ACs and different parameters. Of these, 39.8% of the studies contemplated the variables qm, pH, temperature (T), surface area (SBET), micropore volume (Vmicro), and mesopore volume (Vmeso), and only 19.5% reported the point of zero charge (pHPZC). Statistical analysis disclosed that SBET and Vmicro have a strong positive correlation with qm, while Vmeso, T, and pH show little or no correlation. The difference between pH and pHPZC (PZCdiff) indicated a significant anticorrelation with qm, thus evidencing that lower PZCdiff values enhance adsorption. The findings are useful for all researchers that work with Cr(VI) adsorption on AC since they provide a start point concerning the required adsorbent characteristics and process conditions to be employed.
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Affiliation(s)
- Lucas Mironuk Frescura
- Department of Chemistry, Universidade Federal de Santa Maria - UFSM, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Bryan Brummelhaus de Menezes
- Department of Chemistry, Universidade Federal de Santa Maria - UFSM, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Sabrina Frantz Lütke
- Department of Chemistry, Universidade Federal de Santa Maria - UFSM, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Ronaldo Antunes Funari Junior
- Department of Chemistry, Universidade Federal de Santa Maria - UFSM, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Guilherme Luiz Dotto
- Department of Chemical Engineering, Universidade Federal de Santa Maria - UFSM, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Marcelo Barcellos da Rosa
- Department of Chemistry, Universidade Federal de Santa Maria - UFSM, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil.
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4
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Gong XJ, Li YS, Dong YQ, Li WG. Arsenic adsorption by innovative iron/calcium in-situ-impregnated mesoporous activated carbons from low-temperature water and effects of the presence of humic acids. CHEMOSPHERE 2020; 250:126275. [PMID: 32113091 DOI: 10.1016/j.chemosphere.2020.126275] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/03/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
Innovative iron/calcium in-situ-impregnated mesoporous activated carbons (GL100 and GL200) have been prepared by iron/calcium in-situ-impregnation and Multistage Depth-Activation. Arsenic adsorption kinetics, isotherms, thermodynamics, and re-usability were investigated. Effects of surface-absorbed (ST-HA) and dissolved states humic acid (DHA) on the arsenic adsorption were also determined. Results suggested in-situ iron/calcium impregnation caused the well-development of mesoporous structures during ranges of 2.0-5.0 nm in GL100 and 5.0-50 nm in GL200, respectively. The increase of iron/calcium ensured surface basicity and high ash contents on GL100/GL200, and As(III)/As(V) can be better adsorbed in neutral conditions with higher kinetics in comparison with regular mesoporous carbon XHIT. Maximum adsorption capacities of As(III)/As(V) by GL100 and GL200 were 2.985/3.385 mg/g and 2.516/2.807 mg/g, respectively. Arsenic desorption and carbon re-usability of GL100/200 was improved. As(III)(As (V)) adsorption capacities by GL100 and GL200 were 2.437(1.672) mg/g and 1.740(1.308) mg/g, respectively, after eight cycles. Arsenic adsorption capacities on GL100 were proved to be promoted with the presence of low-level of ST-HA or DHA, and be inhibited at a high-level. As(V) was bound more strongly than As(III) in the presence of ST-HA. As(III)/As(V) uptakes increased slightly and decrease gradually to 1.75/1.86 mg/g in the presence of DHA (0-10 mg DOC/L). Physisorption and chemisorption mechanisms dominant in arsenic adsorption on GL100 in presence of humic acid, forming inner-sphere complexation with metallic oxide, functional groups on carbon surface and humic acid structure, or ternary surface complexation via cationic metal ions as cation bridge.
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Affiliation(s)
- Xu-Jin Gong
- School of Energy and Civil Engineering, Harbin University of Commerce, Harbin, 150028, China.
| | - Yu-Shu Li
- Department of Nephropathy, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, China.
| | - Yu-Qi Dong
- School of Energy and Civil Engineering, Harbin University of Commerce, Harbin, 150028, China.
| | - Wei-Guang Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
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5
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Bandara PC, Peña-Bahamonde J, Rodrigues DF. Redox mechanisms of conversion of Cr(VI) to Cr(III) by graphene oxide-polymer composite. Sci Rep 2020; 10:9237. [PMID: 32513954 PMCID: PMC7280210 DOI: 10.1038/s41598-020-65534-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/06/2020] [Indexed: 01/07/2023] Open
Abstract
Alternative methods of aqueous chromium removal have been of great research interest in recent years as Cr (VI) is a highly toxic compound causing severe human health effects. To achieve better removal of Cr (VI), it is essential to understand the chemical reactions that lead to the successful removal of Cr species from the solution. Recent studies have demonstrated that graphene oxide (GO) based polymer beads cannot only adsorb Cr (VI) via electrostatic attractions but also reduce it to Cr (III), which is a much less toxic form of chromium. This conversion and the functional groups involved in this conversion, until now, were not elucidated. In the present study, we employed X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy to investigate the conversion pathway of Cr (VI) to Cr (III) in graphene-based polymer beads. The results showed that alcoholic groups are converted to carboxylic groups while reducing Cr (VI) to Cr (III). The inclusion of GO in the polymer beads dramatically increased the potential of Cr (VI) uptake and conversion to Cr (III), indicating polymers and nanomaterials containing alcohol groups can remove and convert chromium in water. Other functional groups present in the polymer bead play an important role in adsorption but are not involved in the conversion of Cr (VI) to Cr (III).
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Affiliation(s)
- P C Bandara
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX, 77204-4003, USA
| | - J Peña-Bahamonde
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX, 77204-4003, USA
| | - D F Rodrigues
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX, 77204-4003, USA.
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6
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Experimental investigation of hydrodynamics and chromium(VI) adsorption in continuous countercurrent fluidized column. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00977-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Tu B, Wen R, Wang K, Cheng Y, Deng Y, Cao W, Zhang K, Tao H. Efficient removal of aqueous hexavalent chromium by activated carbon derived from Bermuda grass. J Colloid Interface Sci 2020; 560:649-658. [DOI: 10.1016/j.jcis.2019.10.103] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/21/2019] [Accepted: 10/27/2019] [Indexed: 12/30/2022]
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8
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Nejadshafiee V, Islami MR. Intelligent-activated carbon prepared from pistachio shells precursor for effective adsorption of heavy metals from industrial waste of copper mine. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:1625-1639. [PMID: 31755054 DOI: 10.1007/s11356-019-06732-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 10/10/2019] [Indexed: 05/23/2023]
Abstract
A novel and efficient bio-adsorbent based on magnetic activated carbon nanocomposites (MAC NCs)-modified by sulfamic acid (H3NSO3) has been developed from pistachio shell precursor as agricultural by-products and then was applied for heavy metal removal. Design an experimental model (Central Composite Design (CCD)) for adopting surface response could efficiently be used for adsorption process, and it is an economical way of obtaining the optimal adsorption conditions based on the limited number of experiments. The variants of adsorbent dosage, metal ion concentration, and contact time were optimized for Cu(II) metal by CCD. In addition, adsorption capacity and isoelectric point (pHzpc) of adsorbent were studied at different pH values. Kinetic and isotherm of adsorption were investigated via the Langmuir and the pseudo-second-order model. The maximum adsorption capacity using the Langmuir model was 277.77 mg g-1 for Cu(II) ions on H2NSO3-MAC NCs. Then adsorption process was investigated for ions of Fe(II), Zn(II), and Ni(II) under optimized condition. Also, the competitive adsorption of Fe(II), Zn(II), and Ni(II) ions mixed solution onto H2NSO3-MAC NCs was conducted. Adsorption-desorption results exhibited that the H2NSO3-MAC NCs can be used up to seven cycles while they have excellent performance. Finally, to evaluate the efficiency of this bio-adsorbent, the removal of heavy metals from wastewater of the Sarcheshmeh copper mine as a real sample was studied. Graphical abstract.
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Affiliation(s)
- Vajihe Nejadshafiee
- Chemistry Department, Shahid Bahonar University of Kerman, Kerman, 76169, Iran.
- Central Lab, Shahid Bahonar University of Kerman, Kerman, 76169, Iran.
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9
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Zheng C, Zheng H, Sun Y, Xu B, Wang Y, Zheng X, Wang Y. Simultaneous adsorption and reduction of hexavalent chromium on the poly(4-vinyl pyridine) decorated magnetic chitosan biopolymer in aqueous solution. BIORESOURCE TECHNOLOGY 2019; 293:122038. [PMID: 31454736 DOI: 10.1016/j.biortech.2019.122038] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/16/2019] [Accepted: 08/19/2019] [Indexed: 06/10/2023]
Abstract
Poly(4-vinyl pyridine) decorated magnetic chitosan biopolymer (VMCP), as an absorbent and reductant, was prepared and used to remove hexavalent chromium (Cr(VI)) from aqueous solution. Compared with undecorated magnetic biopolymer, VMCP exhibited significantly improved removal performance under identical experimental conditions. The kinetics, isotherms, and thermodynamics of Cr(VI) adsorption onto VMCP were investigated. Results demonstrated that the maximum monolayer adsorption capacity of VMCP was 344.83 mg/g, which was considerably higher than most reported adsorbents. The mechanism for Cr(VI) removal was explored based on XPS and FTIR analyses. The main mechanisms were concluded to be Cr(VI) adsorption onto the positively charged VMCP surface and the reduction of Cr(VI) to Cr(III), followed by coordination between Cr(III) and N atoms. The easy regeneration, satisfactory reusability, and remarkable performance in column tests revealed the high potential of VMCP in treating Cr(VI)-contaminated water.
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Affiliation(s)
- Chaofan Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Huaili Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China.
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing 211800, China
| | - Bincheng Xu
- College of Environmental Science and Engineering, Tongji University, 200092, China
| | - Yili Wang
- College of Environmental Science and Engineering, Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing 100083, China
| | - Xinyu Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Yongjuan Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
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10
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Asante B, Sirviö JA, Li P, Lavola A, Julkunen‐Tiitto R, Haapala A, Liimatainen H. Adsorption of bark derived polyphenols onto functionalized nanocellulose: Equilibrium modeling and kinetics. AIChE J 2019. [DOI: 10.1002/aic.16823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Bright Asante
- University of Eastern Finland, School of Forest Sciences Joensuu Finland
| | - Juho A. Sirviö
- University of Oulu, Fibre and Particle Engineering Oulu Finland
| | - Panpan Li
- University of Oulu, Fibre and Particle Engineering Oulu Finland
| | - Anu Lavola
- Department of Environmental and Biological Sciences University of Eastern Finland Joensuu Finland
| | - Riitta Julkunen‐Tiitto
- Department of Environmental and Biological Sciences University of Eastern Finland Joensuu Finland
| | - Antti Haapala
- University of Eastern Finland, School of Forest Sciences Joensuu Finland
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11
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Vardhan KH, Kumar PS, Panda RC. A review on heavy metal pollution, toxicity and remedial measures: Current trends and future perspectives. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111197] [Citation(s) in RCA: 500] [Impact Index Per Article: 100.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Zhang T, Hu L, Zhang M, Jiang M, Fiedler H, Bai W, Wang X, Zhang D, Li Z. Cr(VI) removal from soils and groundwater using an integrated adsorption and microbial fuel cell (A-MFC) technology. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:1399-1405. [PMID: 31260939 DOI: 10.1016/j.envpol.2019.06.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/28/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
Remediation of hexavalent chromium [Cr(VI)] has been widely studied for its high mobility and toxicity. As Cr(VI) migrates in natural environment, both soils and groundwater are contaminated simultaneously. In the present study, a novel reactor combining adsorption and microbial fuel cell (A-MFC) using Platanus acerifolia leaves was developed for removing Cr(VI) from groundwater and soils. When initial Cr(VI) concentration was 50 mg/L, the adsorption efficiency of A-MFC achieved 98% after 16 h. Afterwards, the leaves were used for fabricating an MFC-integrated leaching reactor. The A-MFC significantly improved the overall Cr(VI) removal efficiency through leaching and 40% of Cr(VI) in the soil column was removed. The electrical voltage and current of A-MFC reactor achieved averagely 343 mV and 141 μA to maintain the system operation without extra energy supply. This novel A-MFC reactor is an environmentally friendly technology which achieved efficient Cr(VI) removal from groundwater and soils using natural materials, proving the concept that integrated self-remediation of Cr(VI) in contaminated soil and groundwater with natural material and energy.
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Affiliation(s)
- Tingting Zhang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Liyang Hu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Minglu Zhang
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing, 100048, People's Republic of China
| | - Mengyun Jiang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Heidelore Fiedler
- MTM Research Centre, School of Science and Technology, Orebro University, Orebro, SE-701 82, Sweden
| | - Wenrong Bai
- Beijing North Canal Management Division, Beijing, 101100, People's Republic of China
| | - Xiaohui Wang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Dayi Zhang
- School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Zetang Li
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
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13
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Zhao XR, Xu X, Teng J, Zhou N, Zhou Z, Jiang XY, Jiao FP, Yu JG. Three-dimensional porous graphene oxide-maize amylopectin composites with controllable pore-sizes and good adsorption-desorption properties: Facile fabrication and reutilization, and the adsorption mechanism. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 176:11-19. [PMID: 30909000 DOI: 10.1016/j.ecoenv.2019.03.069] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 03/16/2019] [Accepted: 03/16/2019] [Indexed: 05/07/2023]
Abstract
Three-dimensional (3D) porous graphene oxide-maize amylopectin (GO-MA) composites with controllable pore-sizes composites in the range of 6-40 nm were prepared by facile hydrothermal-assisted assembly approaches. The morphologies, pore sizes, specific surface area (SSA) and compositions of GO-MAx:y composites with and different GO-to-MA mass ratios (x:y) were characterized by scanning electron microscopy (SEM), N2 adsorption-desorption isotherms, Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). To reveal the adsorption-desorption mechanism, effects of contact time, temperature, initial adsorbate concentration, pH value of the solution on the adsorption process were studied in detail. The adsorption capacities of 3D GO-MA20:1 composite for organic contaminants including tert-butyl hydroquinone (TBHQ), p-aminophenol (PAP), p-nitrophenol (PNP), o-nitrophenol (MNP), hydroquinone (HQ), alizarin red S (ARS) and neutral red (NR) were 22.17, 116.4, 44.78, 36.96, 16.10, 39.92 and 24.23 mg g-1, respectively. The adsorption capacities of GO-MA30:1 composite for inorganic substances including Pb2+, Mn2+, Cr2O72-, Cd2+, Cu2+, Nd3+, La3+, Y3+, Yb3+ and Er3+ were 84.76, 7.92, 13.6, 17.64, 30.56, 25.52, 12.48, 16.96, 23.32 and 30.32 mg g-1, respectively. In addition, GO-MAx:y composites also exhibited high mechanical properties and good reusability. Consequently, GO-MAx:y composites could be used as reusable adsorbents for removal/enrichment inorganic/organic substances in aqueous solutions.
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Affiliation(s)
- Xiao-Ru Zhao
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Xia Xu
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Jie Teng
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Nan Zhou
- College of Science, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Zhi Zhou
- College of Science, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Xin-Yu Jiang
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Fei-Peng Jiao
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Jin-Gang Yu
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China; College of Science, Hunan Agricultural University, Changsha, Hunan 410128, China.
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De Goes Sampaio C, Silva JGAE, De Brito ES, Becker H, Trevisan MTS, Owen RW. Chromium (VI) remediation in aqueous solution by waste products (peel and seed) of mango (Mangifera indica L.) cultivars. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:5588-5600. [PMID: 30612345 DOI: 10.1007/s11356-018-3851-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/26/2018] [Indexed: 06/09/2023]
Abstract
The surface group characteristics of mango cultivar peels and seeds were evaluated by infrared spectra, PZC, and functional group composition. The adsorption/reduction of chromium (VI) in aqueous solutions was investigated by varying pH, contact time, initial Cr(VI) concentration, and adsorbent amount. The results show that both peel and seed powders of the mango cultivars showed significant adsorption/reduction capacity for Cr(VI) and that the desorption process obeys pseudo-second-order kinetics. Optimal adsorption occurred at pH 1.0, using a Cr(VI) concentration of 100 mg/L. On average, at pH 1.0, and a concentration of 3 g/L, the maximum adsorption/reduction capacity of Cr(VI) was 83% (peels 76%, seeds 90%). Of the mango powders tested, the most efficient were Tommy seed (100%) and Coite peel (98%) followed by Coite seed (96%) and Tommy peel powders (95%). The adsorption/reduction of Cr(VI) was complete (100%) by the mango seed, in comparison to the peel powders (97%) after 180 min. The data indicates that mango waste products, such as seed and peel powders, are both excellent candidates for the remediation of Cr(VI) from aqueous systems and due to the higher concentration of gallates and galloyl glucosides, the mango seed powders should be the powders of choice for future remediation projects.
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Affiliation(s)
- Caroline De Goes Sampaio
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, CP 12200, Fortaleza, Ceará, 60451-970, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Ceará, Distrito Industrial I, Maracanaú, Ceará, 61939-140, Brazil
| | - Juliana Gaspar Alan E Silva
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, CP 12200, Fortaleza, Ceará, 60451-970, Brazil
| | - Edy Sousa De Brito
- Embrapa Agroindústria Tropical, St. Dra Sara Mesquita, 2270, Pici, Fortaleza, Ceará, 60511-110, Brazil
| | - Helena Becker
- Departamento de Química Analitica e Fisico-Quimica, Universidade Federal do Ceará, CP 12200, Fortaleza, Ceará, 60451-970, Brazil
| | - Maria Teresa Salles Trevisan
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, CP 12200, Fortaleza, Ceará, 60451-970, Brazil
| | - Robert W Owen
- Division of Preventive Oncology, National Center for Tumor Diseases, Im Neuenheimer Feld, 460, Heidelberg, Germany.
- German Cancer Research Center (DKFZ), Im Neuenheimer Feld, 581, Heidelberg, Germany.
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15
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Chen Y, An D, Sun S, Gao J, Qian L. Reduction and Removal of Chromium VI in Water by Powdered Activated Carbon. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E269. [PMID: 29425145 PMCID: PMC5848966 DOI: 10.3390/ma11020269] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 01/31/2018] [Accepted: 02/07/2018] [Indexed: 11/25/2022]
Abstract
Cr adsorption on wood-based powdered activated carbon (WPAC) was characterized by scanning electron microscopy coupled with energy dispersive spectroscopy (SEM-EDS), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The highest Cr(VI) adsorption (40.04%) was obtained under acidic conditions (pH 3), whereas Cr removal at pH 10 was only 0.34%. The mechanism of Cr(VI) removal from aqueous solutions by WPAC was based on the reduction of Cr(VI) to Cr(III) with the concomitant oxidation of C-H and C-OH to C-OH and C=O, respectively, on the surface of WPAC, followed by Cr(III) adsorption. Raman spectroscopy revealed a change in the WPAC structure in terms of the D/G band intensity ratio after Cr(VI) adsorption. SEM-EDS analysis showed that the oxygen/carbon ratio on the WPAC surface increased from 9.85% to 17.74%. This result was confirmed by XPS measurements, which showed that 78.8% of Cr adsorbed on the WPAC surface was in the trivalent state. The amount of oxygen-containing functional groups on the surface increased due to the oxidation of graphitic carbons to C-OH and C=O groups.
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Affiliation(s)
- Yanan Chen
- Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China.
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Dong An
- Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China.
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Sainan Sun
- Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China.
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Jiayi Gao
- Department of Environmental Science & Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China.
| | - Linping Qian
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China.
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16
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E. G, P. SK. Adsorption isotherm, kinetics and thermodynamic analysis of Cu(II) ions onto the dried algal biomass ( Spirulina platensis ). J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.005] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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17
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Hsueh YH, Tsai PH, Lin KS, Ke WJ, Chiang CL. Antimicrobial effects of zero-valent iron nanoparticles on gram-positive Bacillus strains and gram-negative Escherichia coli strains. J Nanobiotechnology 2017; 15:77. [PMID: 29100510 PMCID: PMC5670719 DOI: 10.1186/s12951-017-0314-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 10/30/2017] [Indexed: 11/17/2022] Open
Abstract
Background Zero-valent iron nanoparticles (ZVI NPs) have been used extensively for the remediation of contaminated soil and groundwater. Owing to their large active surface area, they serve as strong and effective reductants. However, the ecotoxicity and bioavailability of ZVI NPs in diverse ecological media have not been evaluated in detail and most studies have focused on non-nano ZVI or Fe0. In addition, the antimicrobial properties of ZVI NPs have rarely been investigated, and the underlying mechanism of their toxicity remains unknown. Results In the present study, we demonstrate that ZVI NPs exhibited significant toxicity at 1000 ppm against two distinct gram-positive bacterial strains (Bacillus subtilis 3610 and Bacillus thuringiensis 407) but not against two gram-negative strains (Escherichia coli K12 and ATCC11634). Specifically, ZVI NPs caused at least a 4-log and 1-log reductions in cell numbers, respectively, in the two Bacillus strains, whereas no change was detected in the two E. coli strains. X-ray photoelectron spectroscopy, X-ray absorption near-edge, and extended X-ray absorption fine structure spectra confirmed that Bacillus cells exposed to ZVI NPs contained mostly Fe2O3 with some detectable FeS. This finding indicated that Fe0 nanoparticles penetrated the bacterial cells, where they were subsequently oxidized to Fe2O3 and FeS. RedoxSensor analysis and propidium iodide (PI) staining showed decreased reductase activity and increased PI in both Bacillus strains treated with a high (1000 ppm) concentration of ZVI NPs. Conclusion Taken together, these data show that the toxicity of ZVI NPs was derived from their oxidative properties, which may increase the levels of reactive oxygen species and lead to cell death.
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Affiliation(s)
- Yi-Huang Hsueh
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan.
| | - Ping-Han Tsai
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan
| | - Kuen-Song Lin
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan
| | - Wan-Ju Ke
- Department of Microbiology and Immunology, Chang Gung University, Taoyuan, Taiwan
| | - Chao-Lung Chiang
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan
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18
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Qian J, Shen M, Wang P, Wang C, Li K, Liu J, Lu B, Tian X. Perfluorooctane sulfonate adsorption on powder activated carbon: Effect of phosphate (P) competition, pH, and temperature. CHEMOSPHERE 2017; 182:215-222. [PMID: 28499182 DOI: 10.1016/j.chemosphere.2017.05.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 05/04/2017] [Accepted: 05/05/2017] [Indexed: 06/07/2023]
Abstract
Powdered activated carbon (PAC), as an adsorbent, was applied to remove perfluorooctane sulfonate (PFOS) from aqueous solution. Laboratory batch experiments were performed to investigate the influences of phosphate (P) competition, temperature, and pH for PFOS adsorption onto PAC. The results showed that higher temperature favored PFOS adsorption in single and binary systems. The kinetic data fitted very well to the pseudo second-order kinetic model. Thermodynamically, the endothermic enthalpy of the PFOS adsorption in single and binary systems were 125.07 and 21.25 kJ mol-1, respectively. The entropy of the PFOS adsorption in single and binary systems were 0.479 and 0.092 kJ mol-1 K-1, respectively. And the Gibbs constants were negative. These results indicated that the adsorption processes were spontaneous. The adsorption isotherms of PFOS agreed well with the Langmuir model. In the single system, PFOS adsorption decreased with increased pH value. The difference in the amount of PFOS adsorption between the single and binary systems increased at higher pH. Frustrated total internal reflection (FTIR) demonstrated that P competition increased the hydrophilicity of the PAC and the electrostatic repulsion between PFOS and PAC, then the PFOS adsorption amount decreased. It also demonstrated that, at higher temperature, increased PFOS adsorption was mainly due to the higher diffusion rate of PFOS molecules and greater number of active sites opened on the PAC surface.
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Affiliation(s)
- Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China.
| | - Mengmeng Shen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Kun Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Jingjing Liu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Bianhe Lu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Xin Tian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
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19
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Pakade VE, Nchoe OB, Hlungwane L, Tavengwa NT. Sequestration of hexavalent chromium from aqueous solutions by activated carbon derived from Macadamia nutshells. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:196-206. [PMID: 28067660 DOI: 10.2166/wst.2016.506] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The purpose of this study was to investigate the feasibility of activated carbons prepared from Macadamia nutshells as an efficient adsorbent for the removal of hexavalent chromium (Cr(VI)) from aqueous solutions. The activated carbon was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), CHNS analyzer and Brunauer-Emmett-Teller (BET). For effective removal of Cr(VI), the optimum parameters found were pH 2, 120 min of contact time and 0.2 g of sorbent. The adsorption data fitted well into the Freundlich model, suggesting a multilayer sorption process. The results demonstrated that Macadamia activated carbon could be used as cost-effective biosorbent for the treatment of aqueous solutions contaminated by Cr(VI) with an adsorption capacity of 22.3 mg g-1. The mode of removal involved adsorption and reduction of Cr(VI) to Cr(III).
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Affiliation(s)
- V E Pakade
- Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Private Bag x 021, Vanderbijlpark 1900, South Africa E-mail:
| | - O B Nchoe
- Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Private Bag x 021, Vanderbijlpark 1900, South Africa E-mail:
| | - L Hlungwane
- Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Private Bag x 021, Vanderbijlpark 1900, South Africa E-mail:
| | - N T Tavengwa
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa
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20
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Li J, He A, Jiang J, Feng J, Sheng GD. Quantitative relationships between the adsorptivity of carbonaceous materials in soil for Pb(II) and soil organic matter content. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 572:369-378. [PMID: 27509075 DOI: 10.1016/j.scitotenv.2016.07.225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 07/24/2016] [Accepted: 07/31/2016] [Indexed: 06/06/2023]
Abstract
Strong adsorptivity of manufactured carbonaceous materials (MCMs) mediates the behavior of heavy metals in soil. Laboratory-reported adsorptivity of MCMs often deviates from their actual abilities in soil, because soil organic matter (SOM) can change the adsorptive abilities of MCMs by coating dissolved organic matter (DOM) on the surface of the MCMs. It was considered that the influence of SOM on the adsorptivity of MCMs in soil follows a sequential pathway of SOM releasing DOM in soil solution and subsequent DOM binding onto MCMs, thereby altering MCM surface acidity and hence changing MCM adsorptivity for heavy metals. In this study, we first extracted DOM from ten topsoils collected over a broad region of China with a wide range of SOM. The DOM solutions were then used to load DOM onto four MCMs including activated carbon (AC), multiwalled carbon nanotube (MWCNT), and two biochars (BC400 and BC700), respectively, obtaining a total of 44 MCM-DOM complex samples with known amounts of bound DOM. These MCM-DOM complex samples were then determined for their surface acidities and adsorptive abilities for Pb(II). We found that there were significant correlations between DOM concentration and SOM content, between DOM binding onto MCMs and DOM concentration, between surface acidity of MCM-DOM complexes and DOM binding onto MCMs, as well as between Pb(II) adsorption on MCM-DOM complexes and surface acidity of MCM-DOM complexes. With understanding of these individual linear correlations, linear relationships between the Pb(II) adsorption and SOM content were established by combining individual correlations and by directly plotting the former against the latter. These relationships may be used to accurately predict the adsorptive abilities of MCMs for heavy metals in soils via simply determining SOM.
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Affiliation(s)
- Jianliang Li
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Anfei He
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Jing Jiang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Jingyi Feng
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - G Daniel Sheng
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
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21
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Kumar PS, Saravanan A, rajan PS, Yashwanthraj M. Nanoscale zero-valent iron-impregnated agricultural waste as an effective biosorbent for the removal of heavy metal ions from wastewater. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s40689-016-0014-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Uslu H, Datta D, Azizian S. Separation of chromium (VI) from its liquid solution using new montmorillonite supported with amine based solvent. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.01.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Enhanced removal for humic-acid (HA) and coagulation process using carbon nanotubes (CNTs)/polyalumium chloride (PACl) composites coagulants. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Chen D, Xiao X, Yang K. Removal of phosphate and hexavalent chromium from aqueous solutions by engineered waste eggshell. RSC Adv 2016. [DOI: 10.1039/c6ra05034d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, a novel adsorbent derived from waste eggshell (ES) was used for phosphate and hexavalent chromium adsorption.
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Affiliation(s)
- Dan Chen
- School of Civil Engineering
- Wuhan University
- Wuhan 430072
- China
| | - Xuelian Xiao
- Wuhan Engineering Consulting Bureau
- Wuhan 430014
- China
| | - Kai Yang
- School of Civil Engineering
- Wuhan University
- Wuhan 430072
- China
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25
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Zhang YJ, Ou JL, Duan ZK, Xing ZJ, Wang Y. Adsorption of Cr(VI) on bamboo bark-based activated carbon in the absence and presence of humic acid. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.050] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Gong XJ, Li WG, Wang GZ, Zhang DY, Fan WB, Yin ZD. Characterization and performance evaluation of an innovative mesoporous activated carbon used for drinking water purification in comparison with commercial carbons. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:13291-13304. [PMID: 25940491 DOI: 10.1007/s11356-015-4605-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 04/23/2015] [Indexed: 06/04/2023]
Abstract
The preparation, characterization, and performance evaluation of an innovative mesoporous activated carbon (C-XHIT) were conducted in this study. Comparative evaluation with commercial carbons (C-PS and C-ZJ15) and long-term performance evaluation of C-XHIT were conducted in small-scale system-A (S-A) and pilot-scale system-B (S-B-1 and S-B-2 in series), respectively, for treating water from Songhua River. The cumulative uptake of micropollutants varied with KBV (water volume fed to columns divided by the mass of carbons, m(3) H2O/kg carbon) was employed in the performance evaluation. The results identified that mesoporous and microporous volumes were simultaneously well-developed in C-XHIT. Higher mesoporosity (63.94 %) and average pore width (37.91 Å) of C-XHIT ensured a higher adsorption capacity for humic acid compared to C-PS and C-ZJ15. When the KBV of S-A reached 12.58 m(3) H2O/kg carbon, cumulative uptake of organic pollutants achieved by C-XHIT increased by 32.82 and 156.29 % for DOC (QC) and 22.53 and 112.48 % for UV254 (QUV) compared to C-PS and C-ZJ15, respectively; in contrast, the adsorption capacity of NH4 (+)-N did not improve significantly. C-XHIT achieved high average removal efficiencies for DOC (77.43 ± 16.54 %) and UV254 (83.18 ± 13.88 %) in S-B over 253 days of operation (KBV = 62 m(3) H2O/kg carbon). Adsorption dominated the removal of DOC and UV254 in the initial phases of KBV (0-15 m(3) H2O/kg carbon), and simultaneous biodegradation and adsorption were identified as the mechanisms for organic pollutant uptake at KBV above 25 m(3) H2O/kg carbon. The average rates contributed by S-B-1 and S-B-2 for QC and QUV were approximately 0.75 and 0.25, respectively. Good linear and exponential correlations were observed between S-A and S-B in terms of QC and QUV obtained by C-XHIT, respectively, for the same KBV ranges, indicating a rapid and cost-saving evaluation method. The linear correlation between mesoporosity and QC (QUV) was also identified by the evolution of the property indices of C-XHIT.
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Affiliation(s)
- Xu-Jin Gong
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, Heilongjiang, China,
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27
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Kolya H, Tripathy T. Metal complexation studies of amylopectin-graft
-poly[(N
,N
-dimethylacrylamide)-co
-(acrylic acid)]: a biodegradable synthetic graft copolymer. POLYM INT 2015. [DOI: 10.1002/pi.4922] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haradhan Kolya
- Postgraduate Division of Chemistry; Midnapore College (Autonomous); Midnapore Paschim Medinipur-721101 West Bengal India
| | - Tridib Tripathy
- Postgraduate Division of Chemistry; Midnapore College (Autonomous); Midnapore Paschim Medinipur-721101 West Bengal India
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Xu G, Yang X, Spinosa L. Development of sludge-based adsorbents: preparation, characterization, utilization and its feasibility assessment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 151:221-32. [PMID: 25577702 DOI: 10.1016/j.jenvman.2014.08.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/31/2014] [Accepted: 08/01/2014] [Indexed: 05/09/2023]
Abstract
The increasing generation of sludge and its subsequent treatment are very sensitive environmental problems. For a more stable and sustainable treatment of sludge, there have been many studies, including the conversion of sludge into sludge-based adsorbents (SBAs) for pollutants removal. In this review, current SBAs preparation conditions and use as adsorbent for contaminant removal in water treatment are summarized and discussed. Carbonization, physical activation and chemical activation are three common preparation methods. The controlling key parameters include pyrolysis temperature, dwell time, heating rate, activator and feedstock type. The efficacy of SBAs in contaminant adsorption depends on their surface area, pore size distribution, surface functional groups and ion-exchange capacity. It has been demonstrated that SBAs can attain high uptakes of dyes and metal ions due to their high cation exchange capacity; whereas the strong antibiotics adsorption performance of SBAs derives from high degree of mesoporosity. In addition, thermal treatment significantly stabilizes heavy metals contained in sludge. The paper also discusses the economic feasibility and environmental safety of preparation and application of SBAs. Further research will include investigations on the migration and transformation of element in sludge by thermal treatment, more economical and efficient chemical activation reagents, obtaining SBAs for designated application, combination of coagulation and SBAs adsorption, regeneration of SBAs and full-scale tests.
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Affiliation(s)
- Guoren Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Xin Yang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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Kolya H, Roy A, Tripathy T. Starch-g-Poly-(N, N-dimethyl acrylamide-co-acrylic acid): An efficient Cr (VI) ion binder. Int J Biol Macromol 2015; 72:560-8. [DOI: 10.1016/j.ijbiomac.2014.09.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 09/05/2014] [Indexed: 11/29/2022]
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30
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Li WG, Gong XJ, Wang K, Zhang XR, Fan WB. Adsorption characteristics of arsenic from micro-polluted water by an innovative coal-based mesoporous activated carbon. BIORESOURCE TECHNOLOGY 2014; 165:166-173. [PMID: 24631151 DOI: 10.1016/j.biortech.2014.02.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 02/17/2014] [Accepted: 02/19/2014] [Indexed: 06/03/2023]
Abstract
An innovative coal-based mesoporous activated carbon (NCPAC) was prepared by re-agglomeration, oxidation and two-step activation using coal-blending as precursor. Adsorption capacities of As(III) and As(V) ions (<0.5mg/L) onto NCPAC as a function of pH, adsorbent dose, initial arsenic concentrations, contact time, and adsorption isotherms at 7°C was investigated. The innovative methods promoted total pore volume (1.087cm(3)/g), mesoporosity (64.31%), iodine numbers (1104mg/g), methylene blue (251.8mg/g) and ash contents (15.26%). The adsorption capacities of NCPAC for As(III) and As(V) were found to be strongly dependent on pH and contact time. The optimal pH value was 6. The equilibrium time was 60min for adsorption of As(III) and As(V) by NCPAC. The Langmuir model fitted the experimental data well for both As(III) (R(2)=0.9980) and As(V) (R(2)=0.9988). Maximum adsorption capacities of As(III) and As(V) (C0=0.50mg/L) by NCPAC were 1.491 and 1.760mg/g, respectively.
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Affiliation(s)
- Wei-Guang Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China; School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Xu-Jin Gong
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China; School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Ke Wang
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China
| | - Xin-Ran Zhang
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Wen-Biao Fan
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China.
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Šillerová H, Chrastný V, Čadková E, Komárek M. Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption. CHEMOSPHERE 2014; 95:402-407. [PMID: 24139156 DOI: 10.1016/j.chemosphere.2013.09.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 09/10/2013] [Accepted: 09/14/2013] [Indexed: 06/02/2023]
Abstract
This work investigates the mechanisms behind Cr(VI) biosorption/reduction on three biomaterials (brewers draff, grape waste and synthetic humic acid). Coupled Cr isotope analysis with ICP-OES, XPS and SEM was tested as a novel approach to study the reduction of Cr(VI) by the biomaterials. The Cr(VI) biosorption process was accompanied with heavier Cr isotopes enrichment in the remaining Cr(VI) fraction. A significant fractionation of Cr stable isotopes was observed with no significant pH effect; δ(53)Cr of the remaining fraction ranged from 0.2‰ to 1.9‰ while δ(53)Cr of the product (sorbed Cr) ranged from -1.2‰ to -2.8‰. The Rayleigh fractionation model fitted well the measured data and Cr isotope analysis provides thus an efficient tool to quantify Cr(VI) reduction by different biomaterials. In general, the sorption/reduction potential of the three studied biomaterials decreased in the following order: grape waste>humic acids>brewers draff.
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Affiliation(s)
- Hana Šillerová
- Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha 6 - Suchdol, 165 21, Czech Republic.
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