Biodegradability enhancement of 2,4-dichlorophenol aqueous solution by means of photo-fenton reaction
Biodegradability enhancement of 2,4-dichlorophenol aqueous solution by means of photo-fenton reaction
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DOI：
10.1089/ees.2006.23.722
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发表时间：
2006-07
影响因子：
1.8
通讯作者：
F. Momani
中科院分区：
文献类型：
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作者：
F. Momani
采用光- fenton反应研究了2,4-二氯苯酚（2,4- dcp）对100 mg·L−1溶液的降解和生物降解性的提高。系统地研究了试剂浓度[H2O2和Fe(II)]、初始溶液pH和温度的影响。给出了BOD5、BOD5/COD、BOD5/TOC、COD/TOC比值及平均氧化态。测定了H2O2和Fe（II）的浓度，它们可以完全去除2.4-二氯苯酚并提高生物降解性。并对处理后的溶液毒性进行了评价。在去除所有2,4- dcp后，将原始溶液的BOD5/COD比从0增加到0.3，测量生物降解性。这使得平均氧化态从−0.4提高到1.35。温度对去除率有较好的影响，但对生物降解性的提高作用不大。总的趋势表明，光-芬顿法的降解效率与
The degradation and biodegradability improvement of 100 mg · L−1 solution of 2,4-dichlorophenol (2,4-DCP) has been investigated using the photo-Fenton reaction. The influence of reagents concentrations [H2O2 and Fe(II)], initial solution pH, as well as temperature were systematically studied. BOD5, BOD5/COD, BOD5/TOC, and COD/TOC ratios and the average oxidation state are presented. Concentrations of H2O2 and Fe(II), that gave total removal in 2.4-dichlorophenol and increase biodegradability, was determined. The treated solution toxicity was also evaluated. The biodegradability was measured as the BOD5/COD ratio was increased from 0 of the original solution to 0.3 at the point where all 2,4-DCP was removed from the solution. This was combined to increase the average oxidation state from −0.4 up to 1.35. The temperature shows a good effect in the removal rate but a small effect in biodegradability enhancement. The general trend indicates that the degradation efficiency of the photo-Fenton process is relate...