摘要
研究了白腐真菌-糙皮侧耳菌降解土壤中多氯联苯(PCBs)的可行性,并考察了类Fenton法作为预处理强化多氯联苯生物修复的效果。结果表明,白腐真菌-糙皮侧耳菌对土壤中多氯联苯具有一定的降解能力,并且其降解率随氯原子取代数目的增加而下降;类Fenton氧化作为白腐真菌降解的预处理方法显著提高PCBs的生物降解率,类Fenton预氧化24h后白腐真菌降解4周,二氯联苯到五氯联苯的降解率比单独白腐真菌生物处理分别提高了23.34%、33.43%、30.48%、36.22%,比单独类Fenton法分别提高了7.65%、29.75%、23.85%和25.85%。
The feasibility of white rot fungus Pleurotus ostreatus to biodegrade a mixture of polychlorinated biphenyls(PCB,Aroclor1242) by Fenton-like pre-oxidation in a simulated PCB contaminated soil on lab scale was studied,and the performance of this technique to pre-treat PCBs in bioremediation of soil was investigated.The results indicated PCBs in soil could be biodegraded by that fungus,and the biodegradation rate of PCBs decreased with increasing number of chlorine substitutes.Fenton-like pre-treatment could enhance PCB biodegradation efficiency significantly in the biodegradation process by white rot fungus.Fenton-like pre-treatment for 24 hours followed by white rot fungus biodegradation for 4 weeks,compared to white rot fungus biodegradation used alone,the degradation rate of PCB2,PCB3,PCB4 and PCB5 can be increased by 23.34%、33.43%、30.48%、36.22%,respectively,and the degradation rate of PCB2,PCB3,PCB4 and PCB5 can be increased by 7.65%、29.75%、23.85% and 25.85%,respectively,compared to Fenton-like treatment alone.
出处
《现代化工》
CAS
CSCD
北大核心
2007年第z1期190-193,共4页
Modern Chemical Industry
关键词
多氯联苯
白腐真菌
类FENTON试剂
土壤生物修复
polychlorinated biphenyls
white rot fungus
Fenton-like reagent
bioremediation of soil
作者简介
高大文(1967-),男,博士,教授,主要研究领域为水处理和污染土壤生物修复,gaodw@nefu.edu.cn.
