文献类型：期刊文献

中文题名：Fenton试剂氧化法修复2,4-二氯酚污染土壤的研究

英文题名：Remediation of 2,4-dichlorophenol-contaminated soils by Fenton’s reagent oxidation

作者：曾华冲[1];杨利芝[1];徐宏勇[1];刘勇弟[1]

机构：[1]华东理工大学环境工程系,上海200237

年份：2008

卷号：17

期号：1

起止页码：221

中文期刊名：生态环境

外文期刊名：Ecology and Environmnet

收录：北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：科技部世博科技专项课题(2005BA908B16)

语种：中文

中文关键词：Fenton试剂;化学氧化;2,4-二氯酚;污染土壤修复;泥浆

外文关键词：Fenton＇s reagent; chemical oxidation; 2,4-dichlorophenol; remediation of contaminated soils; slurry

摘要：在泥浆体系中采用Fenton试剂氧化法修复2,4-二氯酚(2,4-DCP)污染的土壤。在恒温、避光条件下,研究2,4-DCP在泥浆体系中的解吸作用,并考察过氧化氢、硫酸亚铁、pH值、水土比、磷酸二氢钾、腐殖酸(HA)等因素对2,4-二氯酚去除效率的影响。试验结果显示,2,4-DCP在泥浆体系中有较高的解吸速率;2,4-DCP的解吸效率与水土比有关,水土比越大,解吸效率越高。研究表明:Fenton试剂氧化法能够有效地去除土壤中的2,4-DCP,过氧化氢和铁的最佳质量比为5:1,最佳pH值范围为2-3;水土比越大,2,4-DCP的去除效果越好;在pH=3时,磷酸二氢钾浓度、腐殖酸投加量和催化剂种类对2,4-DCP的去除效率影响很小。
Fenton＇s reagent was used for remediation of 2,4-dichlorophenol-contaminated soils in the slurry system. Under circumstance of constant temperature and shelter from light, the desorption of 2,4-DCP from contaminated soil was studied, and the effects of H2O2, FeSO4, pH value, liquid-to-soil radios, KH2PO4 and humic acid（HA） on the removal of 2,4-DCP were investigated in the slurry system as well. The results showed that the desorption rate of 2,4-DCP from contaminated soil was high; there was a relationship between liquid-to-soil ratios and desorption efficiency： the higher the liquid-to-soil ratios, the greater the desorption efficiency. It was found that 2,4-DCP in the contaminated soils could be degraded effectively by Fenton＇s reagent; the optimum H202-to-Fe^2＋ ratio （mass） was 5 ： 1 and the optimum pH was between 2 and 3; the higher the liquid-to-soil ratios, the greater the removal of 2,4-DCP. When pH was 3, concentration of KH2PO4, dosage of HA and catalyst types hardly affected the removal of 2,4-DCP in the slurry system.