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Selective and Efficient Reduction of Nitrate to Gaseous Nitrogen from Drinking Water Source by UV/Oxalic Acid/Ferric Iron Systems: Effectiveness and Mechanisms. Catalysts 2022. [DOI: 10.3390/catal12030348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Nitrate (NO3−) reduction in water has been receiving increasing attention in water treatment due to its carcinogenic and endocrine-disrupting properties. This study employs a novel advanced reduction process, the UV/oxalic acid/ferric iron systems (UV/C2O42−/Fe3+ systems), in reducing NO3− due to its high reduction efficiency, excellent selectivity, and low treatment cost. The UV/C2O42−/Fe3+ process reduced NO3− with pseudo-first-order reaction rate constants of 0.0150 ± 0.0013 min−1, minimizing 91.4% of 60 mg/L NO3− and reaching 84.2% of selectivity for gaseous nitrogen after 180 min at pHini. 7.0 and 0.5 mg/L dissolved oxygen (DO). Carbon dioxide radical anion (CO2•−) played a predominant role in reducing NO3−. Gaseous nitrogen and NH4+, as well as CO2, were the main nitrogen- and carbon-containing products, respectively, and reduction pathways were proposed accordingly. A suitable level of oxalic acids (3 mM) and NO3− (60 mg/L) was recommended; increasing initial iron concentrations and UV intensity increased NO3− reduction. Instead, increasing the solution pH decreased the reduction, and 0.5–8.0 mg/L DO negligibly affected the process. Moreover, UV/C2O42−/Fe3+ systems were not retarded by 0.1–10 mM SO42− or Cl− or 0.1–1.0 mM HCO3− but were prohibited by 10 mM HCO3− and 30 mg-C/L humic acids. There was a lower reduction of NO3− in simulated groundwater (72.8%) than deionized water after 180 min at pHini. 7.0 and 0.5 mg/L DO, which meets the drinking water standard (<10 mg/L N-NO3−). Therefore, UV/C2O42−/Fe3+ systems are promising approaches to selectively and efficiently reduce NO3− in drinking water.
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Xu J, Guo J, Xu M, Chen X. Enhancement of microbial redox cycling of iron in zero-valent iron oxidation coupling with deca-brominated diphenyl ether removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 748:141328. [PMID: 32798868 DOI: 10.1016/j.scitotenv.2020.141328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Iron-redox cycling microorganisms are important for understanding the biogeochemical iron and play key roles in zero-valent iron (ZVI) mediated environmental bioremediation. Their influence on ZVI oxidation coupling with organic contaminant removal is of particular interest but is still poorly understood. The objective of this research was to study microbial redox cycles of iron in ZVI oxidation and deca-brominated diphenyl ether (deca-BDE) removal. It was found that iron-oxidizing bacteria (IOB) enhanced ZVI oxidation by using iron as the sole electron donor. Iron-reducing bacteria (IRB) with high activity of Fe (III) reduction, also significantly accelerated rather than inhibited ZVI oxidation. ZVI oxidation activity was increased from 3.42% to 24.28% by IOB and 19.49% by IRB. When deca-BDE was present in the medium, ZVI oxidation activity by IOB and IRB was increased from 2.67% to 48.33% and 64.33%, respectively. However, no co-accelerating effect of IOB and IRB occurred but rather a neutralizing influence on ZVI oxidation was detected with iron-redox cycling bacteria (IORB). ZVI oxidation activity by IORB only increased to 13.14% and 37.0% in the absence and presence of deca-BDE, respectively. Meanwhile, IRB also exhibited the highest removal activity of deca-BDE. Approximately 71.67% of deca-BDE was removed by IRB, compared to 18.91% by IOB and 43.24% by IORB. Deca-BDE significantly influenced the effects of iron-metabolizing microorganisms on ZVI oxidation by altering the composition of microbial communities. Pseudomonas, Paenibacillus, and Sporolactobacillus were the key genera influencing ZVI oxidation and deca-BDE removal. Sporolactobacillus was firstly reported to be able to stimulate both ZVI oxidation and deca-BDE removal. Pseudomonas accelerated ZVI oxidation but had no significant contribution to deca-BDE removal. However, Paenibacillus inhibited both Fe(III) reduction and deca-BDE removal. It is expected that continuous integration of ZVI oxidation and organic contaminant removal can be achieved by regulating the key genera in iron-metabolizing microbial communities.
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Affiliation(s)
- Jingjing Xu
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou 510070, PR China; State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Institute of Microbiology, Guangdong, Academy of Sciences, Guangzhou 510070, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jun Guo
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou 510070, PR China; State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Institute of Microbiology, Guangdong, Academy of Sciences, Guangzhou 510070, PR China
| | - Meiying Xu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou 510070, PR China; State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Institute of Microbiology, Guangdong, Academy of Sciences, Guangzhou 510070, PR China
| | - Xingjuan Chen
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou 510070, PR China; State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Institute of Microbiology, Guangdong, Academy of Sciences, Guangzhou 510070, PR China.
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Jun BM, Kim S, Heo J, Her N, Jang M, Park CM, Yoon Y. Enhanced sonocatalytic degradation of carbamazepine and salicylic acid using a metal-organic framework. ULTRASONICS SONOCHEMISTRY 2019; 56:174-182. [PMID: 31101253 DOI: 10.1016/j.ultsonch.2019.04.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
A metal-organic framework (MOF) was used as a sonocatalyst for ultrasonic (US) processes, to improve the degradation of two selected pharmaceutical active compounds (PhACs); carbamazepine (CBM) and salicylic acid (SA). The intrinsic characteristics of the MOF were characterized using a porosimeter (N2-BET) and scanning electron microscope (SEM). Various experiments were carried out under conditions with different US frequencies (28 and 1000 kHz), US power densities (45-180 W L-1), pH conditions (3.5, 7, and 10.5), and temperatures (293, 303, and 313 K) to investigate the degradation rates of the selected PhACs. Improved removal rates of PhACs were demonstrated within 60 min at 28 kHz (46% for SA; 47% for CBM) and 1000 kHz (60% for SA; 99% for CBM) with an MOF concentration of 45 mg L-1 in the US/MOF system, in comparison to 28 kHz (20% for SA; 25% for CBM) and 1000 kHz (37% for SA; 97% for CBM) under the 'US only' process. The removal of CBM was greater than that of SA under all experimental conditions due to the intrinsic properties of the PhACs. The degradation rates of PhACs are related to the quantity of H2O2; degradation is thus mostly affected by OH oxidation, which is generated by the dissociation of water molecules. The advantages of the 'US/MOF system' are as follows: (i) dispersion of MOF by US can improve sites and reactivity with respect to adsorption between the adsorbate (PhACs) and the adsorbent (MOF), and (ii) dispersed MOF acted as additional nuclei for water molecule pyrolysis, leading to the production of more OH. Therefore, based on the synergy indices, which were calculated using the removal rate constants [k1 (min-1)] of the pseudo-first order kinetic model, the 'US/MOF system' can potentially be used to treat organic pollutants (e.g., PhACs).
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Affiliation(s)
- Byung-Moon Jun
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC 29208, USA
| | - Sewoon Kim
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC 29208, USA
| | - Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy at Youngcheon, 495 Hogook-ro, Gokyungmeon, Youngcheon, Gyeongbuk 38900, Republic of Korea
| | - Namguk Her
- Department of Civil and Environmental Engineering, Korea Army Academy at Youngcheon, 495 Hogook-ro, Gokyungmeon, Youngcheon, Gyeongbuk 38900, Republic of Korea
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 447-1 Wolgye-Dong Nowon-Gu, Seoul, Republic of Korea
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC 29208, USA.
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4
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Yang Q, Zhang F, Zhan J, Gao C, Liu M. Perchlorate Removal in Microbial Electrochemical Systems With Iron/Carbon Electrodes. Front Chem 2019; 7:19. [PMID: 30740394 PMCID: PMC6357934 DOI: 10.3389/fchem.2019.00019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/09/2019] [Indexed: 11/13/2022] Open
Abstract
Perchlorate removal was tested in the cathode chamber of microbial electrochemical systems (MESs). Dual-chambers MESs were constructed and operated in batch mode with four kinds of cathode materials including Fe/C particles (Fe/C), zero valent iron particles (ZVI), blank carbon felt (CF), and active carbon (AC). Without external energy supply or perchlorate-reducing microbial pre-enrichment, perchlorate ( ClO 4 - ) removal could be achieved in the cathode chambers of MESs at different efficiencies. The highest ClO 4 - removal rates in these reactors were 18.96 (Fe/C, 100 Ω, 2 days), 15.84 (ZVI, 100 Ω, 2 days), 14.37 (CF, 100 Ω, 3 days), and 19.78 mg/L/day (AC, 100 Ω, 2 days). ClO 4 - degradation products were mainly Cl- and ClO 3 - , and the total chlorine in the products was lower than the theoretical input. The non-conservation of the total chlorine may be caused by the adsorption and co-precipitation related to the electrode materials. Coulombs and coulombic efficiency calculation showed that electron provided by MESs was partially responsible for ClO 4 - reduction, for the Fe/C cathode reactors, about a quarter of electron was provided by MESs.
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Affiliation(s)
- Qiao Yang
- School of Food and Environment, Dalian University of Technology, Panjin, China
| | - Fengxiang Zhang
- School of Food and Environment, Dalian University of Technology, Panjin, China
| | - Jingjing Zhan
- School of Food and Environment, Dalian University of Technology, Panjin, China
| | - Chao Gao
- School of Food and Environment, Dalian University of Technology, Panjin, China
| | - Minhui Liu
- School of Food and Environment, Dalian University of Technology, Panjin, China
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Chen X, Song D, Xu J, Sun G, Xu M. Microbial depassivation of Fe(0) for contaminant removal under semi-aerobic conditions. Appl Microbiol Biotechnol 2017; 101:8595-8605. [PMID: 29018943 DOI: 10.1007/s00253-017-8549-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 09/11/2017] [Accepted: 09/17/2017] [Indexed: 01/23/2023]
Abstract
Increasing evidence has shown that the reaction of zero-valent iron [Fe(0)] by oxygen can produce strong oxidants and rapidly oxidize the tractable contaminants. However, Fe(0) is vulnerable to passivation in the presence of oxygen, which significantly decreases its surface reactivity towards the removal of refractory contaminants. Microorganisms capable of reducing ferric iron in the presence of oxygen are expected to overcome the limitation of Fe(0) passivation. However, no studies to date have shown that microorganisms are able to depassivate Fe(0) for the removal of recalcitrant compounds in the presence of oxygen. In this study, we demonstrated that the carotenoid-producing Sphingobium hydrophobicum C1 was able to significantly enhance the removal of deca-brominated diphenyl ether by depassivating Fe(0) and subsequently removing the newly formed metabolites under semi-aerobic conditions (> 4 mg/L oxygen). S. hydrophobicum C1 effectively depassivated Fe(0) and regenerated its reactivity by reducing ferric iron under semi-aerobic conditions. Some unique characteristics of S. hydrophobicum C1, including the presence of membrane-integrated carotenoids and certain cell proteins, were essential for the ferric iron reduction of S. hydrophobicum C1 in the presence of oxygen. Our results may provide new insights into the bioremediation of persistent pollutants and will contribute to future studies to enhance our understanding of microbial iron reduction.
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Affiliation(s)
- Xingjuan Chen
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, 100 Central Xianlie Road, 510070, Guangzhou, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, China.,Guangdong Open Laboratory of Applied Microbiology, Guangzhou, 510070, China
| | - Da Song
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, 100 Central Xianlie Road, 510070, Guangzhou, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, China.,Guangdong Open Laboratory of Applied Microbiology, Guangzhou, 510070, China
| | - Jingjing Xu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, 100 Central Xianlie Road, 510070, Guangzhou, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, China.,Guangdong Open Laboratory of Applied Microbiology, Guangzhou, 510070, China
| | - Guoping Sun
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, 100 Central Xianlie Road, 510070, Guangzhou, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, China.,Guangdong Open Laboratory of Applied Microbiology, Guangzhou, 510070, China
| | - Meiying Xu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, 100 Central Xianlie Road, 510070, Guangzhou, People's Republic of China. .,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, China. .,Guangdong Open Laboratory of Applied Microbiology, Guangzhou, 510070, China.
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6
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Wadsworth J, Cockell CS. The Janus face of iron on anoxic worlds: iron oxides are both protective and destructive to life on the early Earth and present-day Mars. FEMS Microbiol Ecol 2017; 93:3778240. [PMID: 28460085 DOI: 10.1093/femsec/fix056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 04/26/2017] [Indexed: 11/15/2022] Open
Abstract
The surface of the early Earth was probably subjected to a higher flux of ultraviolet (UV) radiation than today. UV radiation is known to severely damage DNA and other key molecules of life. Using a liquid culture and a rock analogue system, we investigated the interplay of protective and deleterious effects of iron oxides under UV radiation on the viability of the model organism, Bacillus subtilis. In the presence of hydrogen peroxide, there exists a fine balance between iron oxide's protective effects against this radiation and its deleterious effects caused by Photo-Fenton reactions. The maximum damage was caused by a concentration of hematite of ∼1 mg/mL. Concentrations above this confer increasing protection by physical blockage of the UV radiation, concentrations below this cause less effective UV radiation blockage, but also a correspondingly less effective Photo-Fenton reaction, providing an overall advantage. These results show that on anoxic worlds, surface habitability under a high UV flux leaves life precariously poised between the beneficial and deleterious effects of iron oxides. These results have relevance to the Archean Earth, but also the habitability of the Martian surface, where high levels of UV radiation in combination with iron oxides and hydrogen peroxide can be found.
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Affiliation(s)
- Jennifer Wadsworth
- UK Centre for Astrobiology, School of Physics and Astronomy, University of Edinburgh, Edinburgh, EH10 4EP, UK
| | - Charles S Cockell
- UK Centre for Astrobiology, School of Physics and Astronomy, University of Edinburgh, Edinburgh, EH10 4EP, UK
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7
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Xie Y, Yi Y, Qin Y, Wang L, Liu G, Wu Y, Diao Z, Zhou T, Xu M. Perchlorate degradation in aqueous solution using chitosan-stabilized zero-valent iron nanoparticles. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.07.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Jia Y, Ye L, Kang X, You H, Wang S, Yao J. Photoelectrocatalytic reduction of perchlorate in aqueous solutions over Ag doped TiO2 nanotube arrays. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.05.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Sun Y, Li J, Huang T, Guan X. The influences of iron characteristics, operating conditions and solution chemistry on contaminants removal by zero-valent iron: A review. WATER RESEARCH 2016; 100:277-295. [PMID: 27206056 DOI: 10.1016/j.watres.2016.05.031] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 04/30/2016] [Accepted: 05/09/2016] [Indexed: 06/05/2023]
Abstract
For successful application of a zero-valent iron (ZVI) system, of particular interest is the performance of ZVI under various conditions. The current review comprehensively summarizes the potential effects of the major influencing factors, such as iron intrinsic characteristics (e.g., surface area, iron impurities and oxide films), operating conditions (e.g., pH, dissolved oxygen, iron dosage, iron pretreatment, mixing conditions and temperature) and solution chemistry (e.g., anions, cations and natural organic matter) on the performance of ZVI reported in literature. It was demonstrated that all of the factors could exert significant effects on the ZVI performance toward contaminants removal, negatively or positively. Depending on the removal mechanisms of the respective contaminants and other environmental conditions, an individual variable may exhibit different effects. On the other hand, many of these influences have not been well understood or cannot be individually isolated in experimental or natural systems. Thus, more research is required in order to elucidate the exact roles and mechanisms of each factor in affecting the performance of ZVI. Furthermore, based on these understandings, future research may attempt to establish some feasible strategies to minimize the deteriorating effects and utilize the positive effects so as to improve the performance of ZVI.
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Affiliation(s)
- Yuankui Sun
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Jinxiang Li
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Tinglin Huang
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China.
| | - Xiaohong Guan
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
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10
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Qin H, Li J, Bao Q, Li L, Guan X. Role of dissolved oxygen in metal(loid) removal by zerovalent iron at different pH: its dependence on the removal mechanisms. RSC Adv 2016. [DOI: 10.1039/c6ra08886d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The role of oxygen in metal(loid)s removal by zerovalent iron (ZVI) is strongly dependent on the removal mechanisms of metal(loid)s at different pH.
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Affiliation(s)
- Hejie Qin
- State Key Laboratory of Pollution Control and Resources Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- 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
| | - Qianqian Bao
- State Key Laboratory of Pollution Control and Resources Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P. R. China
| | - Lina Li
- Shanghai Synchrotron Radiation Facility
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai 201204
- 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
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11
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Qin XD, Zhu ZW, Liu G, Fu HM, Zhang HW, Wang AM, Li H, Zhang HF. Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass. Sci Rep 2015; 5:18226. [PMID: 26656918 PMCID: PMC4677396 DOI: 10.1038/srep18226] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 09/21/2015] [Indexed: 12/03/2022] Open
Abstract
Reactivity and mass loss are considered mutually exclusive in conventional zero-valent metal (ZVM) technology to treat environmental contaminants. Here, we report the outstanding performance of Co-based metallic glass (MG) in degrading an aqueous solution of azo dye, thus eliminating this trade-off. Ball-milled Co-based MG powders completely degrade Acid Orange II at an ultrafast rate. The surface-area-normalized rate constant of Co-based MG powders was one order of magnitude higher than that of Co-based crystalline counterparts and three orders of magnitude higher than that of the widely studied Fe0 powders. The coordinatively unsaturated local structure in Co-based MG responds to the catalysis for degradation, resulting in very low mass loss. Wide applicability and good reusability were also present. Co-based MG is the most efficient material for azo dye degradation reported thus far, and will promote the practical application of MGs as functional materials.
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Affiliation(s)
- X D Qin
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China.,University of Chinese Academy of Sciences, Beijing. 100049, China
| | - Z W Zhu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China
| | - G Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China
| | - H M Fu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China
| | - H W Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China
| | - A M Wang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China
| | - H Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China
| | - H F Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang. 110016, China
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12
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Xiong Z, Lai B, Yang P, Zhou Y, Wang J, Fang S. Comparative study on the reactivity of Fe/Cu bimetallic particles and zero valent iron (ZVI) under different conditions of N2, air or without aeration. JOURNAL OF HAZARDOUS MATERIALS 2015; 297:261-268. [PMID: 25978189 DOI: 10.1016/j.jhazmat.2015.05.006] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/25/2015] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
In order to further compare the degradation capacity of Fe(0) and Fe/Cu bimetallic system under different aeration conditions, the mineralization of PNP under different aeration conditions has been investigated thoroughly. The results show that the removal of PNP by Fe(0) or Fe/Cu system followed the pseudo-first-order reaction kinetics. Under the optimal conditions, the COD removal efficiencies obtained through Fe(0) or Fe/Cu system under different aeration conditions followed the trend that Fe/Cu (air)>Fe/Cu (N2: 0-30 min, air: 30-120 min)>control-Fe (air)>Fe/Cu (without aeration)>Fe/Cu (N2)>control-Fe (N2). It revealed that dissolved oxygen (DO) could improve the mineralization of PNP, and Cu could enhance the reactivity of Fe(0). In addition, the degradation of PNP was further analyzed by using UV-vis, FTIR and GC/MS, and the results suggest that Fe/Cu bimetallic system with air aeration could completely break the benzene ring and NO2 structure of PNP and could generate the nontoxic and biodegradable intermediate products. Meanwhile, most of these intermediate products were further mineralized into CO2 and H2O, which brought about a high COD removal efficiency (83.8%). Therefore, Fe/Cu bimetallic system with air aeration would be a promising process for toxic refractory industry wastewater.
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Affiliation(s)
- Zhaokun Xiong
- Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Bo Lai
- Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China.
| | - Ping Yang
- Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Yuexi Zhou
- Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Juling Wang
- Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Shuping Fang
- Chengdu Tianfu New Area Construction Investment Co., Ltd, Chengdu 610094, China
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13
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Enhanced ultrasonic degradation of acetaminophen and naproxen in the presence of powdered activated carbon and biochar adsorbents. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2013.12.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Li H, Gong Y, Huang Q, Zhang H. Degradation of Orange II by UV-Assisted Advanced Fenton Process: Response Surface Approach, Degradation Pathway, and Biodegradability. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401503u] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huiyuan Li
- Department of Environmental
Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology
Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Yanhua Gong
- Department of Environmental
Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology
Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Qianqian Huang
- Department of Environmental
Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology
Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Hui Zhang
- Department of Environmental
Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology
Key Laboratory, Wuhan University, Wuhan 430079, China
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15
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Tang Y, Liang S, Guo H, You H, Gao N, Yu S. Adsorptive characteristics of perchlorate from aqueous solutions by MIEX resin. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.10.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Hori H, Sakamoto T, Tanabe T, Kasuya M, Chino A, Wu Q, Kannan K. Metal-induced decomposition of perchlorate in pressurized hot water. CHEMOSPHERE 2012; 89:737-742. [PMID: 22840541 DOI: 10.1016/j.chemosphere.2012.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 07/03/2012] [Accepted: 07/03/2012] [Indexed: 06/01/2023]
Abstract
Decomposition of perchlorate (ClO(4)(-)) in pressurized hot water (PHW) was investigated. Although ClO(4)(-) demonstrated little reactivity in pure PHW up to 300°C, addition of zerovalent metals to the reaction system enhanced the decomposition of ClO(4)(-) to Cl(-) with an increasing order of activity of (no metal)≈Al < Cu < Zn < Ni << Fe: the addition of iron powder led to the most efficient decomposition of ClO(4)(-). When the iron powder was added to an aqueous ClO(4)(-) solution (104 μM) and the mixture was heated at 150°C, ClO(4)(-) concentration fell below 0.58 μM (58 μg L(-1), detection limit of ion chromatography) in 1 h, and Cl(-) was formed with the yield of 85% after 6 h. The decomposition was accompanied by transformation of the zerovalent iron to Fe(3)O(4). This method was successfully used in the decomposition of ClO(4)(-) in a water sample contaminated with this compound, following fireworks display at Albany, New York, USA.
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Affiliation(s)
- Hisao Hori
- Department of Chemistry, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan.
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