Photo-fenton pretreatment of carbofuran -analyses via experimental design, detoxification and biodegradability enhancement

Li An Lu, Ying Shih Mab, Mathava Kumar, Jih-Gaw Lin*

*此作品的通信作者

研究成果: Article同行評審

36 引文 斯高帕斯(Scopus)

摘要

The central composite design (CCD) and response surface methodology (RSM) were employed to evaluate the effect of H2O2 dosage rate (1-10 mg L-1 min-1) and Fe3+ dosage (1-100 mg L-1) in the photo-Fenton treatment of carbofuran and to develop the second-order polynomial equations in terms of carbofuran and dissolved organic carbon (DOC) removals and BOD5/DOC ratio with different reaction times. Both H2O2 dosage rate and Fe3+ dosage have significant effects on the dependable variables. Based on the results of carbofuran removal and BOD5/DOC ratio, H2O2 dosage rate of 5.4 mg L-1 min-1 and Fe3+ dosage of 59 mg L-1 were found to be the favorable reagent dosages for carbofuran degradation. Under these conditions, the toxicity unit measured by Microtoxandreg; test with 5 min exposure was decreased from 47 to 6 and the biodegradability evaluated by BOD5/COD ratio was increased from 0 to 0.76 after 60 min reaction. The results obtained in this study demonstrate that the photo-Fenton process is a promising pretreatment before the application of biological treatment for carbofuran removal from contaminated water/wastewater.

原文English
頁(從 - 到)325-331
頁數7
期刊Separation and Purification Technology
81
發行號3
DOIs
出版狀態Published - 10 10月 2011

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