Optimized culture condition for enhancing lytic performance of waste activated sludge by Geobacillus sp G1
文献类型：期刊论文
| 作者 | Liu, Wenzong
|
| 刊名 | WATER SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 70期号:2页码:200-208 |
| 关键词 | Geobacillus lytic performance response surface methodology (RSM) uniform design (UD) waste activated sludge (WAS) |
| ISSN号 | 0273-1223 |
| 中文摘要 | Hydrolysis is known as the rate-limiting step during waste activated sludge (WAS) digestion. The optimization of the culture conditions of Geobacillus sp. G1 for enhancing WAS hydrolysis was conducted in this study with uniform design and response surface methodology. Taking the lysis rate of Escherichia coli as the response, the Plackett-Burman design was used to screen the most important variables. Experimental results showed that the maximum predicted lysis rate of E. coli was 50.9% for 4 h treatment time with concentrations of skim milk, NaCl and NH4SO4 at 10.78, 4.36 and 11.28 g/L, respectively. The optimized dosage ratio of Geobacillus sp. G1 to WAS was 35%:65% (V-G1:V-WAS). Under this condition, soluble protein was increased to 695 mg chemical oxygen demand (COD)/L, which was 5.0 times higher than that obtained in the control (140 mg COD/L). The corresponding protease activity reached 1.1 Eu/mL. Scanning electron microscopy showed that abundant cells were apparently lysed with treatment of Geobacillus sp. G1. |
| WOS记录号 | WOS:000341182300003 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9670]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Wenzong. Optimized culture condition for enhancing lytic performance of waste activated sludge by Geobacillus sp G1[J]. WATER SCIENCE AND TECHNOLOGY,2014,70(2):200-208. |
| APA | Liu, Wenzong.(2014).Optimized culture condition for enhancing lytic performance of waste activated sludge by Geobacillus sp G1.WATER SCIENCE AND TECHNOLOGY,70(2),200-208. |
| MLA | Liu, Wenzong."Optimized culture condition for enhancing lytic performance of waste activated sludge by Geobacillus sp G1".WATER SCIENCE AND TECHNOLOGY 70.2(2014):200-208. |
入库方式： OAI收割
来源：生态环境研究中心
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