1
|
Shen X, Yang Y, Zhang J, He F. Design of a multi-electrode dielectric barrier discharge reactor and experimental study on the degradation of atrazine in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:33561-33579. [PMID: 38683430 DOI: 10.1007/s11356-024-33450-3] [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: 02/03/2024] [Accepted: 04/19/2024] [Indexed: 05/01/2024]
Abstract
Atrazine (ATZ) is widely used in agriculture as a triazine herbicide, and its long-term use can cause serious environmental pollution. This paper independently designed a multi-electrode reactor, explored the output power and energy utilization efficiency of the dielectric barrier discharge reactor, and used the dielectric barrier discharge reactor to treat ATZ solution. The results showed that the degradation efficiency of ATZ was 96.39% at 30 min at an initial ATZ concentration of 14 mg/L, an input voltage of 34 kV, an input current of 1.38 mA, an aeration rate of 100 L/h, and a treatment water volume of 150 mL. The degradation of ATZ was significantly increased by the addition of persulfate (PS), Fe2+, and H2O2. After adding radical quenchers (EtOH, p-BQ, and FFA), the degradation efficiency of ATZ decreased, indicating that free radicals (•OH, •O2-, and 1O2) played a key role in the degradation process of ATZ.
Collapse
Affiliation(s)
- Xinjun Shen
- School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, People's Republic of China.
| | - Yuncui Yang
- School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, People's Republic of China
| | - Jing Zhang
- School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, People's Republic of China
| | - Fan He
- School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, People's Republic of China
| |
Collapse
|
2
|
Enhanced removal of Cr(Ⅵ) from wastewater by dielectric barrier discharge plasma coupled with TiO2/rGO nanocomposites: Catalytic performance and reduction mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121609] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
3
|
Shen T, Wang X, Xu P, Yang C, Li J, Wang P, Zhang G. Effect of dielectric barrier discharge plasma on persulfate activation for rapid degradation of atrazine: Optimization, mechanism and energy consumption. ENVIRONMENTAL RESEARCH 2022; 212:113287. [PMID: 35483407 DOI: 10.1016/j.envres.2022.113287] [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: 11/01/2021] [Revised: 03/23/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Dielectric barrier discharge plasma (DBDP) is an emerging and promising advanced oxidation process (AOP) for wastewater treatment. After investigating the effect of input voltage, O3 (generated by dielectric barrier discharge), and peroxydisulfate (PDS) dosage, the DBDPO3/PDS system was established. With the assistance of PDS, the atrazine (ATZ) removal efficiency increased from 69.67% to 82.46% within 25 min. Synergistic effect calculation suggests that there were markedly synergies between DBDP, O3, and PDS. Under the effect of SO4-•, the total organic carbon (TOC) removal and dechlorination efficiency were significantly improved. In addition, the DBDPO3/PDS system maintained the ATZ removal efficiency at a high level over a wide range of initial pH values. According to quenching experiments and electron paramagnetic resonance (EPR) detection, the dominant radical for ATZ degradation in the DBDPO3/PDS system was HO•. A possible degradation pathway of ATZ was proposed based on density functional theory (DFT) analysis, quadrupole-time of flight-liquid chromatography/mass spectrometry (Q-TOF-LC/MS) results, and related literature. The acute toxicity to aquatic minnows and the developmental toxicity of intermediate products prediction confirmed that the DBDPO3/PDS system could effectively reduce ATZ toxicity. The electrical energy per order (EEO) was 7.10 kWh m-3 order-1 illustrating that the DBDPO3/PDS was a more energy-economic system than other energy-intensive processing technologies.
Collapse
Affiliation(s)
- Tianyao Shen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Xiaojing Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Peng Xu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Chunyan Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Jiaqin Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Peng Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
| | - Guangshan Zhang
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao, 266109, PR China
| |
Collapse
|
4
|
Removal of polyvinyl chloride microplastic by dielectric barrier discharge plasma. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
5
|
Wang Y, Huang J, Guo H, Puyang C, Han J, Li Y, Ruan Y. Mechanism and process of sulfamethoxazole decomposition with persulfate activated by pulse dielectric barrier discharge plasma. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120540] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
6
|
Ren J, Zhen Y, Wang J, Li J. Catalytic degradation of caffeic acid by DBD plasma and Mn doped cobalt oxyhydroxide catalyst. CHEMOSPHERE 2021; 275:130101. [PMID: 33984910 DOI: 10.1016/j.chemosphere.2021.130101] [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: 12/16/2020] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
In this study, caffeic acid (CA) was degraded by electrical discharge plasma combined with Mn doped CoOOH catalyst. Doping of Mn significantly improve the catalytic activity of CoOOH. CA degradation efficiency was 75.6% with dielectric barrier discharge treatment for 10 min, and it reached 97% using CoOOH as the catalyst at the same treatment time. CA was 100% degraded with only 8 min using Mn/CoOOH as the catalyst. The introduction of Mn into the lattice of CoOOH induced the formation of oxygen vacancy, causing part of coordinate number of Co decreased from 6 to 5, and thus produces unsaturated Co to be the Lewis acid sites. Lewis acid sites (unsaturated Co) could coordinate with O3 and H2O2 and break their chemical bonds to form O and -OH. Assisting in the conversion of O3 to ·OH was the main role of H2O2 in the catalytic process. The degradation products and pathway of CA were studied by three-dimensional fluorescence, liquid chromatograph-mass spectrometer and density functional theory calculations.
Collapse
Affiliation(s)
- Jingyu Ren
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China.
| | - Yanzhong Zhen
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jian Wang
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jie Li
- School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, China
| |
Collapse
|
7
|
Cheng J, Wang D, Wang B, Ning H, Zhang Y, Li Y, An J, Gao P. Plasma-catalytic degradation of ciprofloxacin in aqueous solution over different MnO 2 nanocrystals in a dielectric barrier discharge system. CHEMOSPHERE 2020; 253:126595. [PMID: 32278904 DOI: 10.1016/j.chemosphere.2020.126595] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/03/2020] [Accepted: 03/22/2020] [Indexed: 06/11/2023]
Abstract
The α-MnO2, β-MnO2 and γ-MnO2 samples were prepared by the hydrothermal method and were used for the degradation of ciprofloxacin (CIP) wastewater in a combined DBD-catalytic process. The physical and chemical properties of the samples were systematically studied by several analytical techniques including BET, XRD, SEM, HRTEM, XPS, and H2-TPR. The combination of DBD with α-MnO2 showed the highest CIP degradation efficiency, and the efficiency could reach 93.1% after 50 min, which was 10.8% and 18.1% higher, respectively, than those of β-MnO2 and γ-MnO2 catalysts in the plasma-catalytic system. According to the model of response surface methodology, the contribution of key experimental parameters on the CIP degradation decreased in the order: peak voltage > air flow rate > initial concentration > initial pH. The optimum operating parameters were peak voltage 17 kV, air flow rate 2.5 L min-1, an initial concentration 5 mg L-1 and an initial pH 6.9. The quenching experiments of active species showed that OH and O2- were critical to the CIP degradation. The generated O3 might be adsorbed by the α-MnO2 catalyst and resulted in more OH generation. The intermediate products of CIP degradation in DBD+α-MnO2 system were analyzed by LC-MS, and three possible degradation pathways were proposed. This research provides an insight into the use of the crystallographic structures in discharge plasma system for antibiotics in water.
Collapse
Affiliation(s)
- Jian Cheng
- College of Resources and Environment Engineering, Shandong University of Technology, Zibo, 250049, China
| | - Doudou Wang
- College of Resources and Environment Engineering, Shandong University of Technology, Zibo, 250049, China
| | - Baohua Wang
- College of Resources and Environment Engineering, Shandong University of Technology, Zibo, 250049, China
| | - Han Ning
- College of Resources and Environment Engineering, Shandong University of Technology, Zibo, 250049, China
| | - Ying Zhang
- College of Information Science and Technology, Nanjing Forestry University, Nanjing, 210037, China
| | - Yuchao Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 250049, China
| | - Jiutao An
- College of Resources and Environment Engineering, Shandong University of Technology, Zibo, 250049, China.
| | - Peiling Gao
- College of Resources and Environment Engineering, Shandong University of Technology, Zibo, 250049, China
| |
Collapse
|