Treatment of thin film transistor-liquid crystal display (TFT-LCD) wastewater by the electro-Fenton process

doi:10.1016/j.seppur.2015.02.039

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/29742

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/29742

Title:	Treatment of thin film transistor-liquid crystal display (TFT-LCD) wastewater by the electro-Fenton process
Authors:	Colades, James I. de Luna, Mark Daniel G. Su, Chia-Chi Lu, Ming-Chun
Contributors:	環境資源管理系
Keywords:	TFT-LCD Wastewater Dimethyl sulfoxide Response surface methodology Electro-Fenton
Date:	2015-05
Issue Date:	2016-04-19 19:06:33 (UTC+8)
Publisher:	Elsevier Science Bv
Abstract:	In this study, the electro-Fenton process was used to treat synthetic and actual TFT-LCD wastewaters. TFT-LCD wastewater contains high amounts of organic solvents mainly dimethyl sulfoxide (DMSO). For the simulated TFT-LCD wastewater, response surface methodology (RSM) was used to fit experimental data to empirical models with the responses, %DMSO removal and H2O2 efficiency (Delta[H2O2]/ Delta[DMSO]). Among the studied independent variables that affect DMSO degradation efficiency, Fe2+ loading was found to be the most dominant, then pH and, H2O2 loading being the least significant. DMSO removal and H2O2 efficiency improved with high Fe2+ loading, low H2O2 loading and low solution pH. The observed decrease in pH was attributed to the production of acidic degradation intermediates of DMSO. At 5 mM DMSO loading, treatment efficiency reached 100% DMSO removal. The electro-Fenton technology was also applied to real TFT-LCD wastewater resulting in TOC and COD removals of 68% and 79%, respectively.
Relation:	Separation And Purification Technology, v.145 n., pp.104-112
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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