Pesticide production wastewater treatment by Electro-Fenton using Taguchi experimental design

• DOI: 10.2166/wst.2021.372
• Publication Date: 2021-09-13T19:19:43Z
• Authors: Thanh Luu Pham; Faten Boujelbane; Hiep Nghia Bui; Hieu Trung Nguyen; Xuan-Thanh Bui; Duy Ngoc Nguyen; Ha Thai Tran Nguyen; Hao Anh Phan; Huong Thi Giang D...; Ha Manh Bui
• Keywords: Bond cleavage

Abstract In this study, the electro-Fenton (EF) method was applied to remove total organic carbon (TOC) from pesticide production wastewater containing tricyclazole (TC). Statistical Taguchi used optimize treatment performance. Analysis of variance (ANOVA) indicated that polynomial regression model fitted experimental data with R2 0.969. The optimal conditions for eliminating 75.4% TOC and 93.7% TC were 0.2 mM Fe2+, 990 mg/L Na2SO4, 180 min reaction time at pH 3 2.22 mA/cm2 current density. removal present in followed first-order kinetic (R2 = 0.993); while second-order case 0.903). addition, results theory approaches (density functional natural bond orbital calculations) also showed C-N breaking nitrate ions cleavage ammonia. Acute toxicity after (PWAT) on microcrustaceans treated still exhibited high against D. magna, LC50 values 3.84%, 2.68%, 2.05%, 1.78% 24 h, 48 72 96 respectively.