表面活性剂LAS高效降解菌的筛选及降解性能的研究  

High effective LAS degrading strains:study on its isolation and ability

作　　者：王国惠[1] 

机构地区：[1]中山大学环境科学与工程学院,广州510275

出　　处：《给水排水》2004年第10期44-47,共4页Water & Wastewater Engineering

基　　金：河南省科技厅自然科学基金(0211050900)

摘　　要：从洗涤剂污泥中分离到一株对LAS活性很高的降解菌Wg^(-1)。该菌初步鉴定为假单胞菌(Pseudomonas sp.)。其最适生长pH为 7,温度为30℃,LAS浓度为 800mg/L。当LAS初始浓度高于800mg/L时,Wg^(-1)对LAS的降解率随底物浓度的增加而降低。该菌对LAS具有很强的耐受性,在LAS浓度达4000 mg/L时,仍能较好地生长并发挥降解作用。Wg^(-1)的生长速度及降解能力均是空白对照(CK)的几倍甚至几十倍。A strain Wg - 1 with high activity to degrade LAS was isolated from detergent wastewater sludge and identified as Pseudomonas sp. The pH and optimum temperature for the growth of the strain were 7 and 30℃ respectively, and the optimum concentration of LAS was 800 mg/L. When the substrate concentration of LAS was higher than 800 mg/L, with the increase of LAS concentration, the degradation rate would decrease. The strain had strong resistance to LAS. When the concentration of LAS was as high as 4000 mg/L, strain Wg - 1 could still grow very well and had high degradation ability. The growth rate and degradation ability of Wg - 1 were several times, even tens of times larger than the control example.

关 键 词：LAS 高效降解菌 污泥 初始浓度 降解能力 降解率 假单胞菌 CK 耐受性 空白对照 

分 类 号：TU561[建筑科学—建筑技术科学] X703[环境科学与工程—环境工程]