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He Y, Shen J, Alharbi NS, Chen C. Volatile organic compounds degradation by nonthermal plasma: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:32123-32152. [PMID: 36710313 DOI: 10.1007/s11356-023-25524-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Volatile organic compounds (VOCs) have posed a severe threat on both ecosystem and human health which thus have gained much attention in recent years. Nonthermal plasma (NTP) as an alternative to traditional methods has been employed to degrade VOC in the atmosphere and wastewater for its high removal efficiency (up to 100%), mild operating conditions, and environmental friendliness. This review outlined the principles of NTP production and the applications on VOC removal in different kinds of reactors, like single/double dielectric barrier discharge, surface discharge, and gliding arc discharge reactors. The combination of NTP with catalysts/oxidants was also applied for VOC degradation to further promote the energy efficiency. Further, detailed explanations were given of the effect of various important factors including input/reactor/external conditions on VOC degradation performance. The reactive species (e.g., high-energy electrons, HO·, O·, N2+, Ar+, O3, H2O2) generated in NTP discharge process have played crucial roles in decomposing VOC molecules; therefore, their variation under different parameter conditions along with the reaction mechanisms involved in these NTP technologies was emphatically explained. Finally, a conclusion of the NTP technologies was presented, and special attention was paid to future challenges for NTP technologies in VOC treatment to stimulate the advances in this topic.
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Affiliation(s)
- Yuan He
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, People's Republic of China
- University of Science and Technology of China, Hefei, 230000, People's Republic of China
| | - Jie Shen
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, People's Republic of China
| | - Njud S Alharbi
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Changlun Chen
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, People's Republic of China.
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Singh S, Rawat S, Patidar R, Lo SL. Development of Bi 2WO 6 and Bi 2O 3 - ZnO heterostructure for enhanced photocatalytic mineralization of Bisphenol A. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:3248-3263. [PMID: 36579882 DOI: 10.2166/wst.2022.402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Present study proposed the synthesis of mixed p-type and n-type nanocomposite heterostructures by co-precipitation method. The as-synthesized heterostructures were characterized through different characterization techniques. The as-synthesized Bi2WO6 and Bi2O3-ZnO heterostructures were tested as photocatalysts during the photodegradation of Bisphenol A (BPA). The Bi2O3-ZnO heterostructure nanocomposite was found to be a more effective photocatalyst than Bi2WO6. The effect of operating parameters including catalytic dose (0.02-0.15 gL-1), initial BPA concentration (5-20 mgL-1), temperature change (5-20 °C) and solution pH changes (4, 5, 7, and 8) were evaluated with Bi2O3-ZnO under UV-light irradiation by selecting a 300 W Xe lamp. More than 90% BPA was degraded with 0.15 gL-1 Bi2O3-ZnO, keeping 1.0 mM H2O2 concentration fixed in 250 mL of reaction suspension. The HPLC and GC-MS were used to detect the reaction intermediates and final products. A plausible degradation pathway was proposed on the basis of the identification of reaction intermediates. Repeatability test analysis confirmed that the as-synthesized catalyst showed superb catalytic performance on its removal trend. The kinetics of degradation of BPA were well fitted by the power laws model. With the order of reaction being 0.6, 0.9, 1.2, and 1.3 for different operating parameters, i.e., catalyst dose, initial pH, temperature, and initial BPA concentration.
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Affiliation(s)
- Seema Singh
- School of Applied & Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, 248007, India; Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou - Shan Rd., Taipei, Taiwan, Roc
| | - Sameeksha Rawat
- School of Applied & Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, 248007, India
| | - Ritesh Patidar
- Department of Petroleum Engineering, Rajasthan Technical University, Kota 324010, Rajasthan, India E-mail:
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou - Shan Rd., Taipei, Taiwan, Roc; Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, Taipei 10617, Taiwan
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Wang B, Li X, Wang Y. Degradation of metronidazole in water using dielectric barrier discharge synergistic with sodium persulfate. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Kovačič A, Modic M, Hojnik N, Vehar A, Kosjek T, Heath D, Walsh JL, Cvelbar U, Heath E. Degradation of bisphenol A and S in wastewater during cold atmospheric pressure plasma treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155707. [PMID: 35537510 DOI: 10.1016/j.scitotenv.2022.155707] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/30/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Developing novel, fast and efficient ecologically benign processes for removing organic contaminants is important for the continued development of water treatment. For this reason, this study investigates the implementation of Cold Atmospheric pressure Plasma (CAP) generated in ambient air as an efficient tool for the removal of Bisphenol A (BPA) and Bisphenol S (BPS)-known endocrine disrupting compounds in water and wastewater, by monitoring degradation kinetics and its transformation products. The highest removal efficiencies of BPA (>98%) and BPS (>70%) were obtained after 480 s of CAP exposure. A pseudo-first-order kinetic revealed that BPA (-kt = 4.4 ̶ 9.0 ms-1) degrades faster than BPS (-kt = 0.4 ̶ 2.4 ms-1) and that the degradation is also time- and CAP power-dependent, while the initial concentration or matrix type had a negligible effect. This study also tentatively identified three previously reported and one novel transformation product of BPA and four novel transformation products of BPS. Their postulated structures suggested similar breakdown mechanisms, i.e., hydroxylation followed by ring cleavage. The results demonstrate that CAP technology is an effective process for the degradation of both BPA and BPS without the need for additional chemicals, indicating that CAP is a promising technology for water and wastewater remediation worthy of further investigation and optimization.
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Affiliation(s)
- Ana Kovačič
- Department of Environmental Sciences O2, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Martina Modic
- Laboratory for Gaseous Electronics F6, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Nataša Hojnik
- Laboratory for Gaseous Electronics F6, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Anja Vehar
- Department of Environmental Sciences O2, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Tina Kosjek
- Department of Environmental Sciences O2, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - David Heath
- Department of Environmental Sciences O2, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - James L Walsh
- Department of Electrical Engineering and Electronics, University of Liverpool, 9 Brownlow Hill, Liverpool, L69 3GJ, United Kingdom
| | - Uroš Cvelbar
- Laboratory for Gaseous Electronics F6, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Ester Heath
- Department of Environmental Sciences O2, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia.
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Song S, Zhang H, Han S, Xiao S, Du Y, Hu K, Wang H, Wu C. Activation of persulfate by a water falling film DBD process for the enhancement of enrofloxacin degradation. CHEMOSPHERE 2022; 301:134667. [PMID: 35460676 DOI: 10.1016/j.chemosphere.2022.134667] [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: 02/11/2022] [Revised: 04/07/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
A synergetic system of water falling film dielectric barrier discharge (DBD) plasma and persulfate (PS) was established and applied to enhance the enrofloxacin (EFA) degradation in this study. The simultaneous existence of electrons, reactive species, heat and UV-visible light in the DBD plasma system were utilized together to activate the PS to form SO4-· and other reactive oxygen species (ROS), and then worked in synergy with the DBD plasma to oxidize the EFA. The obtained results verified that there was a significant increase in the degradation percentages of EFA (20 mg L-1) in the DBD/PS system, and the trend was more obvious under the condition of larger discharge power input. When 0.8 mM PS was added into the DBD system with 0.8 kW discharge power, the degradation percentage of EFA could reach 99.35% after 60 min treatment, the corresponding synergetic factor (SF) was 7.94. Analysis of the O3 and the H2O2 concentrations in the DBD plasma system before and after the PS addition explained the activation of the PS by the HO·. The quenching experiments on reactive species suggested that SO4-·, HO·, and 1O2 were all important reactive species for EFA degradation. The intermediates formed by the EFA degradation were detected and the degradation pathways were speculated. Results of toxicity analysis illustrated that the toxicity of the initial EFA solution decreased after degradation in the synergetic system of DBD/PS.
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Affiliation(s)
- Shilin Song
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Huihui Zhang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Song Han
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, China
| | - Sisi Xiao
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, China
| | - Yansheng Du
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, China
| | - Kun Hu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Huijuan Wang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, China.
| | - Chundu Wu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, China
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Recent Advances of Emerging Organic Pollutants Degradation in Environment by Non-Thermal Plasma Technology: A Review. WATER 2022. [DOI: 10.3390/w14091351] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Emerging organic pollutants (EOPs), including endocrine disrupting compounds (EDCs), pharmaceuticals and personal care products (PPCPs), and persistent organic pollutants (POPs), constitute a problem in the environmental field as they are difficult to completely degrade by conventional treatment methods. Non-thermal plasma technology is a novel advanced oxidation process, which combines the effects of free radical oxidation, ozone oxidation, ultraviolet radiation, shockwave, etc. This paper summarized and discussed the research progress of non-thermal plasma remediation of EOPs-contaminated water and soil. In addition, the reactive species in the process of non-thermal plasma degradation of EOPs were summarized, and the degradation pathways and degradation mechanisms of EOPs were evaluated of selected EOPs for different study cases. At the same time, the effect of non-thermal plasma in synergy with other techniques on the degradation of EOPs in the environment was evaluated. Finally, the bottleneck problems of non-thermal plasma technology are summarized, and some suggestions for the future development of non-thermal plasma technology in the environmental remediation were presented. This review contributes to our better understanding of non-thermal plasma technology for remediation of EOPs-contaminated water and soil, hoping to provide reference for relevant practitioners.
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Li J, Hu X, Wang J, Yin L, Yao Y, Zhang Y, He H, Yang S, Ni L, Li S. Methyl silicate promotes the oxidative degradation of bisphenol A by permanganate: Efficiency enhancement mechanism and solid-liquid separation characteristics. CHEMOSPHERE 2022; 293:133634. [PMID: 35051515 DOI: 10.1016/j.chemosphere.2022.133634] [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: 09/07/2021] [Revised: 01/05/2022] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
Permanganate (Mn (VII)) is an environmentally-friendly mild oxidant in the field of advanced oxidation treatment, however, manganese colloids are produced as byproducts, which is difficult to separate from water, resulting in secondary pollution. This study used potassium methyl silicates (PMS) as surface modifiers to improve the aggregation of colloidal particles by increasing the hydrophobicity of the colloidal surface, and then explored the oxidation of bisphenol A (BPA) by Mn (VII) under the influence of potassium methyl silicate and the solid-liquid separation performance of the reaction system. The results showed that PMS and sodium silicate (SS) substantially enhanced the degradation of BPA by Mn (VII), and the promotion effect of potassium methyl silicate was greater than that of sodium silicate. PMS provided not only enough adsorption sites for MnO2 colloidal particles formed in the reaction process, but also reaction space for Mn (VII) to catalyze the oxidation of BPA. PMS combined with the hydroxyl group of MnO2 through hydrogen bonds and forms hydrophobic PMS-MnO2 complexes which accelerated sedimentation by polycondensation. The strong adsorption ability of in situ formed MnO2 colloids also accelerated the deposition of PMS-MnO2 complex. This study solved the low efficiency problem of Mn (VII) oxidation degradation of organic pollutants and difficult separation of manganese containing colloids and provided a new strategy for the efficient utilization of Mn (VII).
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Affiliation(s)
- Jing Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
| | - Xin Hu
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
| | - Juan Wang
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
| | - Li Yin
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
| | - Youru Yao
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China.
| | - Yong Zhang
- Department of Geological Sciences, University of Alabama, Tuscaloosa, AL, 35487, USA.
| | - Huan He
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
| | - Shaogui Yang
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
| | - Lixiao Ni
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China.
| | - Shiyin Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China.
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