| 温度对制革污泥的生物淋滤除铬效果的影响 |
| |
| 引用本文： | 方迪,周立祥.温度对制革污泥的生物淋滤除铬效果的影响[J].环境科学,2006,27(7):1455-1458. |
| |
| 作者姓名： | 方迪 周立祥 |
| |
| 作者单位： | 南京农业大学资源环境学院环境工程系,南京,210095;南京农业大学资源环境学院环境工程系,南京,210095 |
| |
| 基金项目： | 浙江省重大科技攻关项目(2004C11004);江苏省自然科学基金重点项目(BK2004213);新世纪优秀人才计划(NECT-04-0505) |
| |
| 摘 要： | 温度对利用嗜酸性硫杆菌脱除污泥中重金属的生物淋滤技术有着重要影响.本试验采用序批式摇床培养,在12～36℃范围内,研究温度对生物淋滤法脱除制革污泥中重金属铬效果的影响.结果表明,随着温度升高,污泥pH值下降以及ORP和SO42-上升的速率均显著提高,污泥中Cr的溶出率相应加快.反应温度在28～36℃时,制革污泥中接种嗜酸性硫杆菌同时添加4 g/L的S粉作为能源物质,生物淋滤反应8d,Cr的溶出率可高达100%.控温在28℃较适宜今后的工程应用.
|
| 关 键 词： | 制革污泥 生物淋滤 嗜酸性硫杆菌 铬 温度 |
| 文章编号： | 0250-3301（2006）07-1455-04 |
| 收稿时间： | 2005-09-15 |
| 修稿时间： | 2005-09-152005-10-27 |
Effect of Temperature on Bioleaching of Cr from Tannery Sludge |
| |
| FANG Di and ZHOU Li-xiang.Effect of Temperature on Bioleaching of Cr from Tannery Sludge[J].Chinese Journal of Environmental Science,2006,27(7):1455-1458. |
| |
| Authors: | FANG Di and ZHOU Li-xiang |
| |
| Institution: | College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China |
| |
| Abstract: | Bioleaching processes are normally sensitive to temperature fluctuations. Shake flask experiments were conducted to examine these effects in the temperature range of 12-36 degrees C. The results showed that there was an increase in the rates of pH reduction and Cr solubilization efficiency with the increase of the temperature of bioleaching reaction. After 8 days of bacterial leaching treatment, almost 100% of Cr could be leached from tannery sludge at the temperature of 28 degrees C and 36 degrees C. The temperature of 28 degrees C is recommended to be employed in the future realistic operation. |
| |
| Keywords: | tannery sludge bioleaching Acidithiobacillus sp Cr temperature |
| 本文献已被 CNKI 维普 万方数据 PubMed 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
