漆酶不同施用方法对土壤DDT污染修复的研究  

Remediation of DDT contaminated soil by using laccase in different application ways

作　　者：赵月春[1] 付蓉[1] 莫测辉[2] 易筱筠[3] 

机构地区：[1]华南农业大学应用化学系,广州510640 [2]暨南大学环境工程系,广州510632 [3]华南理工大学环境科学与技术系,广州510640

出　　处：《农业工程学报》2008年第2期107-110,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：广东省自然科学基金项目(021016、036716);广东省科技计划项目(2002C31603、2003C34505)

摘　　要：该文从投加量、分次投加和灭菌等方面,研究了漆酶不同施用方法对其修复土壤DDT污染效果的影响。研究结果表明,土壤中DDT各组分(P,P’-DDE除外)及DDT总量(DDTs)的降解率均随着漆酶投加量的增加而显著提高,在投加量为每克土加酶6U时DDTs的降解率达到50.63%;漆酶两次投加对土壤中DDT各组分及总量的降解率均显著高于一次投加,DDTs的降解率提高11.4%;漆酶处理对于非灭菌土壤和灭菌土壤中DDT总量的降解率几乎相当,但各组分则有显著差异,其中P,P’-DDE、O,P’-DDT和P,P’-DDD在非灭菌土壤中的降解率低于灭菌土壤,而P,P’-DDT则相反。Effect of different application ways （application dose, batch application and unsterilized soil） of laecase on remediation of DDT in soil was investigated. The results show that degradation rate of DDT in soil increased significantly with increasing application dose of laecase except P,P＇-DDE. The degradation rate of DDTs was up to 50.63% when adding dose of laccase was 6U per gram soil. Degradation rate of DDT in soil treated with two times addition of laccase is 11.4% higher for DDTs than that treated with one time addition of laccase with the equivalent dose of laccase. Degradation rates of DDT in unsterilized and sterilized soils both treated by laeease are equivalent for total DDT（DDTs）, but significantly different for individual compounds, with degradation rates of P,P＇-DDE,O,P＇-DDT, and P,P＇-DDD in unsterilized soil is significantly lower than those of which in sterilized soil and conversely for P,P＇-DDT.

关 键 词：土壤DDT污染修复 漆酶 不同投加方式 

分 类 号：X53[环境科学与工程—环境工程]