Cartap removal from simulated water matrices by fluidized-bed Fenton process: optimization of process parameters

doi:10.1007/s11356-020-09365-0

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標題:	Cartap removal from simulated water matrices by fluidized-bed Fenton process: optimization of process parameters
作者:	de Luna, Mark Daniel G. Rabongue, Anamie Garcia-Segura, Sergi Lu, Ming-Chun
貢獻者:	Univ Philippines Diliman, Natl Grad Sch Engn, Environm Engn Program Univ Philippines Diliman, Dept Chem Engn Arizona State Univ, Nanosyst Engn Res Ctr Nanotechnol Enabled Water T, Sch Sustainable Engn & Built Environm Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
關鍵字:	Advanced oxidation process Fluidized-bed reactor Persistent organic pollutant Wastewater treatment
日期:	2021
上傳時間:	2022-11-18 11:23:43 (UTC+8)
出版者:	Springer Heidelberg
摘要:	Cartap is a thiocarbamate pesticide widely-used to protect rice crops, one of the most mass-produced cereals worldwide. Effluents containing cartap pose serious environment and health risks due to the acute toxicity of this emerging contaminant. This work evaluates the capabilities of the Fenton process to efficiently remove cartap from water matrices. Process parameters such as hydrogen peroxide dosage, ferrous ion concentration and operating pH were optimized using Box-Behnken design. Results showed complete cartap removal with Fenton oxidation in a fluidized-bed reactor while eliminating sludge generation during treatment. Fluidized-bed Fenton process had improved reduction in chemical oxygen demand and total organic carbon due to the contribution of heterogeneous Fenton catalysis to the overall degradation of cartap species compared to conventional Fenton in a batch reactor. Furthermore, competitive reactions and scavenging effects in complex natural water matrices were simulated with the use of inorganic ions such as nitrate, chloride, and phosphate. Results demonstrated the detrimental effect of phosphate ions on Fenton oxidation due to the precipitation of soluble catalysts as iron phosphates, which stops the catalytic Fenton cycle and thus the production of oxidants for contaminant degradation.
關聯:	Environmental Science and Pollution Research, v.28, n.30, pp.11
显示于类别:	[環境資源管理系(所)] 期刊論文

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