| 细菌降解非离子表面活性剂的研究 |
| 摘要点击 1436 全文点击 1654 投稿时间：1996-05-15 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 假单胞杆菌52(pseudomonos 52) Weeksella 6 非离子表活剂AEO-9 SA-20 生物降解 |
| 英文关键词 Pseudomonos sp 52 Weeksella sp 6 nonionic surfactant biodegradation |
|
| 中文摘要 |
| 从石油污染的土壤中分离到2株能利用非离子表面活性剂AEO-9和SA-20作为唯一碳源生长的细菌。这2株窗被定名为假单胞杆菌52(Pseudomonos 52)和Weeksella 6.最适于这2株菌利用非离子表活剂AEO-9的培养条件是乙酸胺作为氮源,PH7,30℃;添加少量萄糖能促进表活剂的降解。降解速率的研究表明,当AEO-9的初始浓度为5000mg/L时,52号菌和6号菌都能在2周内将其去除85%,并在4周内将其去除95%.52号菌的休眠细胞能在PH7,30℃和细胞浓度(湿重)200mg/ml的条件下,在6.5h内将同样初始浓度的AEO-9降解60%. |
| 英文摘要 |
| Two strains isolated from soil contaminated by petroleum chemicals,Pseudomonos sp.strain 52 and Weeksella sp.strain 6 could utilize nonionic sndactants(AEO-9 and SA-20)as sole source of carbon for growth.The experiment results showed that the optimum source of nitrogen was ammonium acetate,the optimum PH and temperature for the degradation were 7.0 and 30℃.It was found that addition of glucose enhanced biodegradation of AEO-9.With the initial concentration of 5 000 mg/L the growth cells of the two strains had an AEO-9 removal efficiency of 85% and 95% within 2 weeks or 4 weeks,respectively. The biodegradation rate of AEO-9, in the same initial concentration,by resting cells of strain 52was 60% within 6.5 hours under the optimum degradation condition in which PH,temperature and cell density (wet weight/volume)was 7.0、30C and 20%,respectively. |
|
|
|
