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Pham TL, Boujelbane F, Bui HN, Nguyen HT, Bui XT, Nguyen DN, Nguyen HTT, Phan HA, Duong HTG, Bui HM. Pesticide production wastewater treatment by Electro-Fenton using Taguchi experimental design. Water Sci Technol 2021; 84:3155-3171. [PMID: 34850719 DOI: 10.2166/wst.2021.372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, the electro-Fenton (EF) method was applied to remove total organic carbon (TOC) from the pesticide production wastewater containing tricyclazole (TC). Statistical Taguchi method was used to optimize the treatment performance. Analysis of variance (ANOVA) indicated that the polynomial regression model fitted experimental data with R2 of 0.969. The optimal conditions for eliminating 75.4% TOC and 93.7% TC were 0.2 mM of Fe2+, 990 mg/L of Na2SO4, 180 min of reaction time at pH 3 with 2.22 mA/cm2 of current density. The removal of TC present in the wastewater followed the first-order reaction kinetic model (R2 = 0.993); while that was the second-order kinetic model in the case of the TOC removal (R2 = 0.903). In addition, the experimental results and theory approaches (density functional theory and natural bond orbital calculations) also showed the C-N bond breaking and nitrate ions cleavage to ammonia. Acute toxicity of the pesticide wastewater after treatment (PWAT) on microcrustaceans showed that the treated wastewater still exhibited high toxicity against D. magna, with LC50 values of 3.84%, 2.68%, 2.05%, and 1.78% at 24 h, 48 h, 72 h, and 96 h, respectively.
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Affiliation(s)
- Thanh Luu Pham
- Ho Chi Minh City University of Technology (HUTECH), 475A Dien Bien Phu Street, Ward 25, Binh Thanh District, Ho Chi Minh City 700000, Vietnam; Institute of Tropical Biology, Vietnam Academy of Science and Technology (VAST), Ho Chi Minh City 700000, Vietnam
| | - Faten Boujelbane
- Research Laboratory on Matter and Energy for Nuclear Science Development, LR16CNSTN02, CNSTN, Sidi Thabet Technopark, Tunis 2020, Tunisia
| | - Hiep Nghia Bui
- Department of Environmental Engineering, Dayeh University, Changhua 51591, Taiwan
| | - Hieu Trung Nguyen
- Institute of Applied Technology, Thu Dau Mot University, Thu Dau Mot City, Binh Duong Province 750000, Vietnam
| | - Xuan-Thanh Bui
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 700000, Vietnam; Key Laboratory of Advanced Waste Treatment Technology, Ho Chi Minh University of Technology, Vietnam National University Ho Chi Minh (VNU-HCM), Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Duy Ngoc Nguyen
- Research and Development Center for Radiation Technology, Vietnam Atomic Energy Institute, Ho Chi Minh City 700000, Vietnam
| | - Ha Thai Tran Nguyen
- Department of Business Administration, Asia University, Taichung 41354, Taiwan; Faculty of Finance and Accounting, Saigon University, Ho Chi Minh City 700000, Vietnam
| | - Hao Anh Phan
- Department of Environmental Science, Saigon University, Ho Chi Minh City 700000, Vietnam E-mail:
| | - Huong Thi Giang Duong
- Department of Environmental Science, Saigon University, Ho Chi Minh City 700000, Vietnam E-mail:
| | - Ha Manh Bui
- Department of Environmental Science, Saigon University, Ho Chi Minh City 700000, Vietnam E-mail:
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