1
|
Idrees M, Batool S, Rasheed H, Herath I, Bundschuh J, Niazi NK, Ahmad M, Xu J, Chen D. Adsorption-coupled Fenton type reduction of bromate in water by high-yield polymer-derived ceramic-supported nano-zerovalent iron. ENVIRONMENTAL RESEARCH 2024; 258:119419. [PMID: 38879107 DOI: 10.1016/j.envres.2024.119419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 06/09/2024] [Accepted: 06/12/2024] [Indexed: 06/22/2024]
Abstract
Nano-zerovalent iron (nZVI) is a promising material for the removal of both organic and inorganic pollutants from contaminated water. This study investigates the potential of a novel composite of nZVI on a polymer-derived supporting ceramic (nZVI-PDC) synthesized via the liquid-phase reduction method for the simultaneous adsorption and Fenton-type reduction of bromate anion (BrO3-) in water. The nZVI nanoparticles were effectively anchored onto the PDC by impregnating high-yield carbon in a ferrous sulfate solution. The PDC facilitated the uniform dispersion of nZVI nanoparticles due to its multiple active sites distributed within mesocarbon cavities. The developed nZVI-PDC composite exhibited a high specific surface area of 837 m2 g-1 and an ordered mesoporous structure with a pore volume of 0.37 cm3 g-1. As an adsorbent, the nZVI-PDC composite exhibited a maximum adsorption capacity (qe) of 842 mg g-1 and a partition coefficient (KH) of 10.2 mg g-1 μM-1, as calculated by the pseudo-second-order model. As a catalyst, the composite demonstrated a reaction kinetic rate of 43.5 μmol g-1 h-1 within 6 h at pH 4, using a dosage of 60 mg L-1 nZVI-PDC and a concentration of 0.8 mmol L-1 H2O2. Comparatively, PDC exhibited a qe of 408 mg g-1, KH of 1.67 mg g-1 μM-1, and a reaction rate of 20.8 μmol g-1 h-1, while nZVI showed a qe of 456 mg g-1, KH of 2.30 mg g-1 μM-1, and a reaction rate of 27.2 μmol g-1 h-1. The modelling indicated that the nZVI-PDC composite followed pseudo-second-order kinetics. The remarkable removal efficiency of the nZVI-PDC composite was attributed to the synergistic effects between PDC and nZVI, where PDC facilitated charge transfer, promoting Fe2+ generation and the Fe3+/Fe2+ cycle. Overall, this work introduces a promising adsorption technology for the efficient removal of BrO3- from contaminated aqueous solutions, highlighting the significant potential of the nZVI-PDC composite in water purification applications.
Collapse
Affiliation(s)
- Muhammad Idrees
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, PR China; State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, 230026, PR China; Guangdong Provincial Engineering Technology Research Center of Key Materials for High-Performance Copper Clad Laminates (KM-CCL), Dongguan, 523808, PR China.
| | - Saima Batool
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Hina Rasheed
- Department of Soil Science, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, 63100, Pakistan
| | - Indika Herath
- Faculty of Science, Engineering and Built Environment, Centre for Regional and Rural Futures, Deakin University, Waurn Ponds, VIC, 3216, Australia
| | - Jochen Bundschuh
- School of Engineering, Faculty of Health, Engineering and Sciences, The University of Southern Queensland West Street, 4350, QLD, Australia
| | - Nabeel Khan Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan
| | - Mahtab Ahmad
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Junguo Xu
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Deliang Chen
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, PR China; Guangdong Provincial Engineering Technology Research Center of Key Materials for High-Performance Copper Clad Laminates (KM-CCL), Dongguan, 523808, PR China.
| |
Collapse
|
2
|
Flores K, Gonzalez DF, Morales HM, Mar A, Garcia-Segura S, Gardea-Torresdey JL, G Parsons J. Amino-modified upcycled biochar achieves selective chromium removal in complex aqueous matrices. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121160. [PMID: 38761625 DOI: 10.1016/j.jenvman.2024.121160] [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: 01/06/2024] [Revised: 04/17/2024] [Accepted: 05/10/2024] [Indexed: 05/20/2024]
Abstract
Chromium pollution of groundwater sources is a growing global issue, which correlates with various anthropogenic activities. Remediation of both the Cr(VI) and Cr(III), via adsorption technologies, has been championed in recent years due to ease of use, minimal energy requirements, and the potential to serve as a highly sustainable remediation technology. In the present study, a biochar sorbent sourced from pineapple skins, allowed for the upcycling of agricultural waste into water purification technology. The biochar material was chemically modified, through a green amination method, to produce an efficient and selective adsorbent for the removal of both Cr(VI) and Cr(III) from complex aqueous matrices. From FTIR analysis it was evident that the chemical modification introduced new C-N and N-H bonds observed in the modified biochar along with a depletion of N-O and C-H bonds found in the pristine biochar. The amino modified biochar was found to spontaneously adsorb both forms of chromium at room temperature, with binding capacities of 46.5 mg/g of Cr(VI) and 27.1 mg/g of Cr(III). Interference studies, conducted in complex matrices, showed no change in adsorption capacity for Cr(VI) in matrices containing up to 3,000× the concentration of interfering ions. Finally, Cr(III) removal was synergized to 100% adsorption at interfering ions concentrations up to 330× of the analyte, which were suppressed at higher interference concentrations. Considering such performance, the amino modified biochar achieved selective removal for both forms of chromium, showing great potential for utilization in complex chromium pollution sources.
Collapse
Affiliation(s)
- Kenneth Flores
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, 85287-3005, USA.
| | - Diego F Gonzalez
- School of Integrative Biological and Chemical Sciences University of Texas Rio Grande Valley, 1 West University Blvd., Brownsville, TX, 78521, USA
| | - Helia M Morales
- School of Integrative Biological and Chemical Sciences University of Texas Rio Grande Valley, 1 West University Blvd., Brownsville, TX, 78521, USA; Escuela de Ingenierıa y Ciencias, Tecnologico de Monterrey, Av E Garza Sada # 2501, Monterrey, 64849, Mexico
| | - Arnulfo Mar
- School of Integrative Biological and Chemical Sciences University of Texas Rio Grande Valley, 1 West University Blvd., Brownsville, TX, 78521, USA
| | - Sergi Garcia-Segura
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, 85287-3005, USA
| | - Jorge L Gardea-Torresdey
- Department of Chemistry & Biochemistry and Environmental Science and Engineering, University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Jason G Parsons
- School of Earth Environmental, and Marine Science, University of Texas Rio Grande Valley, 1 West University Blvd., Brownsville, TX, 78521, USA.
| |
Collapse
|
3
|
Tao R, Hu R, Gwenzi W, Ruppert H, Noubactep C, Alahmadi TA. Effects of common dissolved anions on the efficiency of Fe 0-based remediation systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120566. [PMID: 38520854 DOI: 10.1016/j.jenvman.2024.120566] [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: 01/25/2024] [Revised: 02/29/2024] [Accepted: 03/06/2024] [Indexed: 03/25/2024]
Abstract
Quiescent batch experiments were conducted to evaluate the influences of Cl-, F-, HCO3-, HPO42-, and SO42- on the reactivity of metallic iron (Fe0) for water remediation using the methylene blue (MB) method. Strong discoloration of MB indicates high availability of solid iron corrosion products (FeCPs). Tap water was used as an operational reference. Experiments were carried out in graduated test tubes (22 mL) for up to 45 d, using 0.1 g of Fe0 and 0.5 g of sand. Operational parameters investigated were (i) equilibration time (0-45 d), (ii) 4 different types of Fe0, (iii) anion concentration (10 values), and (iv) use of MB and Orange II (O-II). The degree of dye discoloration, the pH, and the iron concentration were monitored in each system. Relative to the reference system, HCO3- enhanced the extent of MB discoloration, while Cl-, F-, HPO42-, and SO42- inhibited it. A different behavior was observed for O-II discoloration: in particular, HCO3- inhibited O-II discoloration. The increased MB discoloration in the HCO3- system was justified by considering the availability of FeCPs as contaminant scavengers, pH increase, and contact time. The addition of any other anion initially delays the availability of FeCPs. Conflicting results in the literature can be attributed to the use of inappropriate experimental conditions. The results indicate that the application of Fe0-based systems for water remediation is a highly site-specific issue which has to include the anion chemistry of the water.
Collapse
Affiliation(s)
- Ran Tao
- Applied Geology, University of Göttingen, Goldschmidtstraße 3, D-37077, Göttingen, Germany.
| | - Rui Hu
- School of Earth Science and Engineering, Hohai University, Fo Cheng Xi Road 8, Nanjing, 211100, China.
| | - Willis Gwenzi
- Grassland Science and Renewable Plant Resources, Faculty of Organic Agricultural Science, University of Kassel, Steinstrasse 19, D-37213, Witzenhausen, Germany; Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Alle 100, D-14469, Potsdam, Germany; Currently, Biosystems and Environmental Engineering Research Group, 380 New Adylin, Westgate, Harare, Zimbabwe.
| | - Hans Ruppert
- Department of Sedimentology & Environmental Geology, University of Göttingen, Goldschmidtstraße 3, D-37077, Göttingen, Germany.
| | - Chicgoua Noubactep
- Applied Geology, University of Göttingen, Goldschmidtstraße 3, D-37077, Göttingen, Germany; Department of Water and Environmental Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, P.O. Box 447, Tanzania; Faculty of Science and Technology, Campus of Banekane, Université des Montagnes, Bangangté, P.O. Box 208, Cameroon; Centre for Modern Indian Studies (CeMIS), University of Göttingen, Waldweg 26, D-37073, Göttingen, Germany.
| | - Tahani Awad Alahmadi
- Department of Pediatrics, College of Medicine and King Khalid University Hospital, King Saud University, Medical City, PO Box-2925, Riyadh 11461, Saudi Arabia
| |
Collapse
|
4
|
Fan C, Li B, Li W, Chen W, Yin W, Li P, Wu J. Promoted iron corrosion and enhanced phosphate removal by micro-electric field driven zero-valent iron. CHEMOSPHERE 2023; 341:140066. [PMID: 37673180 DOI: 10.1016/j.chemosphere.2023.140066] [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: 02/06/2023] [Revised: 08/27/2023] [Accepted: 09/03/2023] [Indexed: 09/08/2023]
Abstract
Zero-valent iron (Fe0) is restricted in phosphate removal due to the formation of a passive P-Fe layer on its surface. A micro-electric field (0.20 mA cm-2) was employed in Fe0 column to facilitate iron corrosion for enhanced phosphate removal with a Fe0 column as the control. The performance of two columns was compared by batch experiment at a Fe0 filling rate of 10 vol% with quartz sand as dispersing media. The stability and reusability of micro-electric field driven Fe0 (MFD-Fe0) column was estimated by cyclic test. Solid phase analysis showed promoted iron corrosion, iron ion generation, and secondary mineral production such as lepidocrocite and magnetite in the MFD-Fe0 column. Since iron ions tended to precipitate with phosphate, and iron minerals provided reaction sites for phosphate adsorption, the MFD-Fe0 column achieved an enhanced phosphate removal of 94.1%, 2.8 times higher than that of the Fe0 column. The increase of current density from 0 to 0.20 mA cm-2 significantly improved phosphate removal from 24.5% to 94.1%, further demonstrating the promoting effect of micro-electric field on iron corrosion. The MFD-Fe0 column also possessed excellent stability and reusability. It only showed a slight decrease of phosphate removal from 94.1% to 89.7% in eight cycles. It restored a phosphate removal capacity of 97.4% as compared to the initial MFD-Fe0 column by eluting iron (hydro)oxides on Fe0 and quartz sand surfaces with sulfuric acid. This study indicated that MFD-Fe0 is a promising method to remove phosphate from water and an alternative strategy for overcoming Fe0 passivation.
Collapse
Affiliation(s)
- Chunlin Fan
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Bing Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Weiquan Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Weiting Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou, 510632, China
| | - Ping Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China; The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou, 510006, China.
| |
Collapse
|
5
|
Zhao J, Xiong S, Ai J, Wu J, Huang LZ, Yin W. Stabilized green rusts for aqueous Cr(VI) removal: Fast kinetics, high iron utilization rate and anti-acidification. CHEMOSPHERE 2021; 262:127853. [PMID: 32777616 DOI: 10.1016/j.chemosphere.2020.127853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/26/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
Green rusts (GRs) are redox active towards contaminants but they are not stable for long distance transport during the soil and groundwater remediation. In this study, green rust chloride (GR) was stabilized by selected regents, including silicate (Si), phosphate (P), fulvic acid (FA), carboxymethyl cellulose (CMC) and bone char (BC), then these stabilized GR, collectively named GR-X, would be further applied for Cr(VI) removal from aqueous solution. The stabilization experiment demonstrated that the release of Fe(II) from GR was effectively suppressed by above reagents, enabling at least 50% lower Fe(II) leaching from the stabilized GR-X than that from the pristine GR. The intact hexagonal GR plates and crystallinity were also confirmed by the SEM images and XRD patterns after storage for 7 days, indicating the stable structure of GR-X was remained. In the Cr(VI) removal tests, Cr(VI) was eliminated by GR-X in seconds with a Fe(II) utilization efficiency over 90%. The Cr species examination demonstrated that the GR-X was able to transfer Cr(VI) into stable Cr(III)-Fe(III) precipitates (Fe-Mn oxides fraction). After Cr(VI) removal tests, all reactors were exposed to the air for 1 week to monitor pH fluctuation and evaluated the risk of acidification. The results indicate that, except for GR-Si system, the other post-remediation systems are stable and the pH buffering ability of GR-X could avoid acidification and lower the Cr leaching risk.
Collapse
Affiliation(s)
- Jinxin Zhao
- School of Environment, Jinan University, Guangzhou, 510632, PR China
| | - Shuting Xiong
- School of Environment, Jinan University, Guangzhou, 510632, PR China
| | - Jing Ai
- Department of Plant and Environmental Sciences, Faculty of Life Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
| | - Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Li-Zhi Huang
- School of Civil Engineering, Wuhan University, No. 8, East Lake South Road, Wuhan, PR China
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou, 510632, PR China.
| |
Collapse
|
6
|
Wang X, Xin J, Yuan M, Zhao F. Electron competition and electron selectivity in abiotic, biotic, and coupled systems for dechlorinating chlorinated aliphatic hydrocarbons in groundwater: A review. WATER RESEARCH 2020; 183:116060. [PMID: 32750534 DOI: 10.1016/j.watres.2020.116060] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 06/01/2020] [Accepted: 06/13/2020] [Indexed: 06/11/2023]
Abstract
Chlorinated aliphatic hydrocarbons (CAHs) have been frequently detected in aquifers in recent years. Owing to the bioaccumulation and toxicity of CAHs, it is essential to explore high-efficiency technologies for their complete dechlorination in groundwater. At present, the most widely used abiotic and biotic remediation technologies are based on zero-valent iron (ZVI) and functional anaerobic bacteria (FAB), respectively. However, the main obstacles to the full potential of both technologies in the field include their lowered efficiencies and increased economic costs due to the co-existence of a variety of natural electron acceptors in the environment, such as dissolved oxygen (DO), nitrate (NO3-), sulfate (SO42-), ferric iron (Fe (III)), bicarbonate (HCO3-), and even water, which compete for electrons with the target contaminants. Therefore, a clear understanding of the mechanisms governing electron competition and electron selectivity is significant for the accurate evaluation of the effectiveness of both technologies under natural hydrochemical conditions. We collected data from both abiotic and biotic CAH-remediation systems, summarized the dechlorination and undesired reactions in groundwater, discussed the characterization methods and general principles of electron competition, and described strategies to improve electron selectivity in both systems. Furthermore, we reviewed the emerging ZVI-FAB coupled system, which integrates abiotic and biotic processes to enhance dechlorination performance and electron utilization efficiency. Lastly, we propose future research needs to quantitatively understand the electron competition in abiotic, biotic, and coupled systems in more detail and to promote improved electron selectivity in groundwater remediation.
Collapse
Affiliation(s)
- Xiaohui Wang
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Jia Xin
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China.
| | - Mengjiao Yuan
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Fang Zhao
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| |
Collapse
|
7
|
Xu J, Avellan A, Li H, Liu X, Noël V, Lou Z, Wang Y, Kaegi R, Henkelman G, Lowry GV. Sulfur Loading and Speciation Control the Hydrophobicity, Electron Transfer, Reactivity, and Selectivity of Sulfidized Nanoscale Zerovalent Iron. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906910. [PMID: 32162726 DOI: 10.1002/adma.201906910] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/27/2020] [Indexed: 06/10/2023]
Abstract
Sulfidized nanoscale zerovalent iron (SNZVI) is a promising material for groundwater remediation. However, the relationships between sulfur content and speciation and the properties of SNZVI materials are unknown, preventing rational design. Here, the effects of sulfur on the crystalline structure, hydrophobicity, sulfur speciation, corrosion potential, and electron transfer resistance are determined. Sulfur incorporation extended the nano-Fe0 BCC lattice parameter, reduced the Fe local vacancies, and lowered the resistance to electron transfer. Impacts of the main sulfur species (FeS and FeS2 ) on hydrophobicity (water contact angles) are consistent with density functional theory calculations for these FeSx phases. These properties well explain the reactivity and selectivity of SNZVI during the reductive dechlorination of trichloroethylene (TCE), a hydrophobic groundwater contaminant. Controlling the amount and speciation of sulfur in the SNZVI made it highly reactive (up to 0.41 L m-2 d-1 ) and selective for TCE degradation over water (up to 240 moles TCE per mole H2 O), with an electron efficiency of up to 70%, and these values are 54-fold, 98-fold, and 160-fold higher than for NZVI, respectively. These findings can guide the rational design of robust SNZVI with properties tailored for specific application scenarios.
Collapse
Affiliation(s)
- Jiang Xu
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
- Center for Environmental Implications of NanoTechnology, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Astrid Avellan
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
- Center for Environmental Implications of NanoTechnology, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Hao Li
- Department of Chemistry and the Oden Institute for Computational Engineering and Sciences, The University of Texas at Austin, Austin, Texas, 78712, USA
| | - Xitong Liu
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Vincent Noël
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Zimo Lou
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Yan Wang
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Rälf Kaegi
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600, Dübendorf, Switzerland
| | - Graeme Henkelman
- Department of Chemistry and the Oden Institute for Computational Engineering and Sciences, The University of Texas at Austin, Austin, Texas, 78712, USA
| | - Gregory V Lowry
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
- Center for Environmental Implications of NanoTechnology, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| |
Collapse
|
8
|
Akram N, Guo J, Ma W, Guo Y, Hassan A, Wang J. Synergistic Catalysis of Co(OH) 2/CuO for the Degradation of Organic Pollutant Under Visible Light Irradiation. Sci Rep 2020; 10:1939. [PMID: 32029883 PMCID: PMC7005304 DOI: 10.1038/s41598-020-59053-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 01/23/2020] [Indexed: 11/25/2022] Open
Abstract
The exploration of advanced water treatment technologies e.g. heterogeneous photocatalysis is the most promising way to address organic pollution issues. Semiconductors based bimetallic photocatalysis with wide bandgap, have displayed splendid degradation performance in the UV light region, but their extension to the visible light/near infra-red region is still a matter of great concern. CuO, Co(OH)2, CoO and Co(OH)2/CuO nanocomposites were synthesized via simple co-precipitation method and further practiced for Rhodamine B (RhB) decomposition by introducing per-sulfate (PS) as a sacrificial agent. Results revealed that Co(OH)2/CuO catalyst had shown robust catalytic activity for RhB photodegradation (degradation time 8 min, k = 0.864 min−1) under light illumination, significantly less (12–60 times) than the other reported bimetallic catalysts. Catalyst also have verified excellent performance for a broader pH range (5–9) with excellent stability. Main reactive species responsible for the photocatalytic reaction were sulfate (SO4•−) and superoxide (O2•) radicals, duly verified by ESR and by using radical scavengers. With outstanding recycling abilities, this is probably the fewer successful attempt for RhB decolorization and can be highly favorable for effluent treatment by using the synergic effect of absorption and photodegradation.
Collapse
Affiliation(s)
- Naeem Akram
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China
| | - Jia Guo
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China
| | - Wenlan Ma
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China
| | - Yuan Guo
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China
| | - Afaq Hassan
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China.
| |
Collapse
|
9
|
Han Y, Huang J, Liu H, Wu Y, Wu Z, Zhang K, Lu Q. Abiotic reduction of p-chloronitrobenzene by sulfate green rust: influence factors, products and mechanism. RSC Adv 2020; 10:19247-19253. [PMID: 35515441 PMCID: PMC9054108 DOI: 10.1039/d0ra02113j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/13/2020] [Indexed: 11/21/2022] Open
Abstract
The reduction of p-chloronitrobenzene (p-CNB) by sulfate green rust (GRSO4) was systematically studied. The results revealed that GRSO4 has a good removal effect on p-CNB. The removal efficiencies of p-CNB by GRSO4 improved with the increase of the pH value. The removal efficiencies in the presence of ions were better than that of GRSO4 alone, while natural organic matter (NOM) could adsorb p-CNB, which competed with GRSO4. The reductions of p-CNB by GRSO4 under different conditions followed pseudo-first-order reaction kinetics except for the reactions in the presence of NOM. p-CNB was converted into p-chloroaniline (p-CAN), which produced p-nitrosochlorobenzene and p-chlorophenylhydroxylamine as the intermediate products. The results of the X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed GRSO4 was gradually transformed into goethite. Fe(ii) in the GRSO4 structure was the main electron donor involved in the reaction. Sulfate green rust reduces p-chloronitrobenzene through the electron transfer from the structural Fe(ii) and transforms into goethite.![]()
Collapse
Affiliation(s)
- Ying Han
- College of Civil Engineering and Architecture
- Zhejiang University of Technology
- Hangzhou 310023
- P. R. China
| | - Junkai Huang
- College of Civil Engineering and Architecture
- Zhejiang University of Technology
- Hangzhou 310023
- P. R. China
| | - Hongyuan Liu
- College of Civil Engineering and Architecture
- Zhejiang University of Technology
- Hangzhou 310023
- P. R. China
| | - Yue Wu
- College of Civil Engineering and Architecture
- Zhejiang University of Technology
- Hangzhou 310023
- P. R. China
| | - Zhao Wu
- College of Civil Engineering and Architecture
- Zhejiang University of Technology
- Hangzhou 310023
- P. R. China
| | - Kemin Zhang
- College of Civil Engineering and Architecture
- Zhejiang University of Technology
- Hangzhou 310023
- P. R. China
| | - Qingjie Lu
- College of Civil Engineering and Architecture
- Zhejiang University of Technology
- Hangzhou 310023
- P. R. China
| |
Collapse
|
10
|
Grossi JS, Nascimento MA, Oliveira AF, Silva AA, Lopes RP. THE INFLUENCE OF DIFFERENT ELECTROLYTES ON SULFENTRAZONE DECHLORINATION BY IRON-NICKEL BIMETALLIC NANOPARTICLES. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190361s20170513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
11
|
Li H, Zhou L, Lin H, Xu X, Jia R, Xia S. Dynamic response of biofilm microbial ecology to para-chloronitrobenzene biodegradation in a hydrogen-based, denitrifying and sulfate-reducing membrane biofilm reactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 643:842-849. [PMID: 29958172 DOI: 10.1016/j.scitotenv.2018.06.245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 06/19/2018] [Accepted: 06/19/2018] [Indexed: 06/08/2023]
Abstract
The dynamic response of biofilm microbial ecology to para-chloronitrobenzene (p-CNB) biodegradation was systematically evaluated according to the composition and loading of electron acceptors and H2 availability (controlled by H2 pressure) in a hydrogen-based, denitrifying and sulfate-reducing membrane biofilm reactor (MBfR). To accomplish this, a laboratory-scale MBfR was set up and operated with different influent p-CNB concentrations (0, 2, and 5 mg p-CNB/L) and H2 pressures (0.04 and 0.05 MPa). Polymerase chain reaction-denaturing gel electrophoresis (PCR-DGGE) and cloning were then applied to investigate the bacterial diversity response of biofilm during p-CNB biodegradation. The results showed that denitrification and sulfate reduction largely controlled the total demand for H2. Additionally, the DGGE fingerprint demonstrated that the addition of p-CNB, which acted as an electron acceptor, was a critical factor in the dynamics of the MBfR biofilm microbial ecology. The presence of p-CNB also had a more advantageous effect on the biofilm microbial community. Additionally, clone library analysis showed that Proteobacteria (especially beta- and gamma-) comprised the majority of the microbial biofilm response to p-CNB biodegradation, and that Pseudomonas sp. (Gammaproteobacteria) played a significant role in the biotransformation of p-CNB to aniline.
Collapse
Affiliation(s)
- Haixiang Li
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, Guangxi 541004, PR China
| | - Lijie Zhou
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Hua Lin
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, Guangxi 541004, PR China
| | - Xiaoyin Xu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Renyong Jia
- Shanghai Urban Construction Design and Research Institute, Shanghai 200125, China
| | - Siqing Xia
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
| |
Collapse
|
12
|
Yin W, Ai J, Huang LZ, Tobler DJ, B Hansen HC. A Silicate/Glycine Switch To Control the Reactivity of Layered Iron(II)-Iron(III) Hydroxides for Dechlorination of Carbon Tetrachloride. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:7876-7883. [PMID: 29905472 DOI: 10.1021/acs.est.8b02020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Layered FeII-FeIII hydroxide chloride (chloride green rust, GRCl) has high reactivity toward reducible pollutants such as chlorinated solvents. However, this reactive solid is prone to dissolution, and hence loss of reactivity, during storage and handling. In this study, adsorption of silicate (Si) to GRCl was tested for its ability to minimize GRCl dissolution and to inhibit reduction of carbon tetrachloride (CT). Silicate adsorbed with high affinity to GRCl yielding a sorption maximum of 0.026 g of Si/g of GRCl. In the absence of Si, the pseudo-first-order rate constant for CT dehalogenation by GRCl was 2.1 h-1, demonstrating very high reactivity of GRCl but with substantial FeII dissolution up to 2.5 mM. When Si was adsorbed to GRCl, CT dehalogenation was blocked and FeII dissolution extent was reduced by a factor of 28. The addition of glycine (Gly) was tested for reactivation of the Si-blocked GRCl for CT dehalogenation. At 30 mM Gly, partial reactivation of the GRCl was observed with pseudo-first-order rate constant for CT reduction of 0.075 h-1. This blockage and reactivation of GRCl reactivity demonstrates that it is possible to design a switch for GRCl to control its stability and reactivity under anoxic conditions.
Collapse
Affiliation(s)
- Weizhao Yin
- School of Environment , Jinan University , Guangzhou 510632 , China
- Department of Plant and Environmental Sciences, Faculty of Life Sciences , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
| | - Jing Ai
- Department of Plant and Environmental Sciences, Faculty of Life Sciences , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
| | - Li-Zhi Huang
- School of Civil Engineering , Wuhan University , No. 8, East Lake South Road , Wuhan , China
- Interdisciplinary Nanoscience Center , Aarhus University , Gustav Wieds Vej 14 , DK-8000 Aarhus C , Denmark
| | - Dominique J Tobler
- Nano-Science Center, Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , København Ø , Denmark
| | - Hans Christian B Hansen
- Department of Plant and Environmental Sciences, Faculty of Life Sciences , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
| |
Collapse
|
13
|
Aging of zerovalent iron in various coexisting solutes: Characteristics, reactivity toward selenite and rejuvenation by weak magnetic field. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.09.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
14
|
Xu H, Sun Y, Li J, Li F, Guan X. Aging of Zerovalent Iron in Synthetic Groundwater: X-ray Photoelectron Spectroscopy Depth Profiling Characterization and Depassivation with Uniform Magnetic Field. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:8214-8222. [PMID: 27384928 DOI: 10.1021/acs.est.6b01763] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Scanning electron microscopy (SEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) depth profiling were employed to characterize the aged zerovalent iron (AZVI) samples incubated in synthetic groundwater. The AZVI samples prepared under different conditions exhibited the passive layers of different morphologies, amounts, and constituents. Owing to the accumulation of iron oxides on their surface, all the prepared AZVI samples were much less reactive than the pristine ZVI for Se(IV) removal. However, the reactivity of all AZVI samples toward Se(IV) sequestration could be significantly enhanced by applying a uniform magnetic field (UMF). Moreover, the flux intensity of UMF necessary to depassivate an AZVI sample was strongly dependent on the properties of its passive layer. The UMF of 1 mT was strong enough to restore the reactivity of the AZVI samples with Fe3O4 as the major constituent of the passive film or with a thin layer of α-Fe2O3 and γ-FeOOH in the external passive film. The flux intensity of UMF necessary to depassivate the AZVI samples would increase to 2 mT or even 5 mT if the AZVI samples were covered with passive films being thicker, denser, and contained more γ-FeOOH and α-Fe2O3. Furthermore, increasing the flux intensity of UMF facilitated the reduction of Se(IV) to Se(0) by AZVI samples.
Collapse
Affiliation(s)
- Hanyang Xu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University , Shanghai 200092, P. R. China
| | - Yuankui Sun
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology , Xi'an, Shaanxi 710055, P. R. China
| | - Jinxiang Li
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University , Shanghai 200092, P. R. China
| | - Fengmin Li
- Environmental Science and Engineering, Ocean University of China , Qingdao, Shandong 266100, P.R. China
| | - Xiaohong Guan
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University , Shanghai 200092, P. R. China
| |
Collapse
|
15
|
Reduction of 4-chloronitrobenzene in a bioelectrochemical reactor with biocathode at ambient temperature for a long-term operation. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2014.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
16
|
Wu Y, Luo H, Wang H. Removal of para-nitrochlorobenzene from aqueous solution on surfactant-modified nanoscale zero-valent iron/graphene nanocomposites. ENVIRONMENTAL TECHNOLOGY 2014; 35:2698-2707. [PMID: 25176304 DOI: 10.1080/09593330.2014.919032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study demonstrated a remarkably simple and efficient method for the synthesis of nanoscale zero-valent iron (NZVI)/graphene (GN) nanocomposites. In order to prevent the agglomeration and restack of nanocomposites, chemical functionalization of nanocomposites with cetyltrimethylammonium bromide was proposed. The adsorption performance of surfactant-modified NZVI/GN nanocomposites was evaluated for the removal of para-nitrochlorobenzene (p-NCB) from aqueous solutions. The characteristics of nanocomposites were characterized by X-ray diffraction, BET surface area, Fourier transform infrared spectrum, thermogravimetric analysis and scanning electron microscopy. The effect factors including initial solution pH, contact time, reaction temperature, dosage, initial concentration of humic acid (HA) on the adsorption property of p-NCB onto surfactant-modified nanocomposites were investigated. The adsorption kinetics fitted well with pseudo-second-order model. The adsorption capacity of p-NCB on surfactant-modified nanocomposites inferred from the Langmuir model was 105.15 mg/g at 293 K. The thermodynamic parameters indicated that the adsorption of p-NCB onto surfactant-modified nanocomposites was an exothermic and spontaneous process. HA had a strong suppression effect on p-NCB uptake in the adsorption experiment.
Collapse
Affiliation(s)
- Yan Wu
- a College of Environment and Energy , South China University of Technology , Guangzhou 510006 , People's Republic of China
| | | | | |
Collapse
|