期刊
BIORESOURCE TECHNOLOGY
卷 152, 期 -, 页码 490-498出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.11.037
关键词
Swine wastewater sludge; Pre-treatment; Fermentation; Polymeric substances; Flocculating activity
资金
- National Natural Science Foundation of China [51278464, 50778066]
- Doctoral Program Foundation of Institutions of Higher Education of China [20090161110010]
Sterilization, alkaline-thermal, and acid-thermal treatments were applied to different suspended sludge solids (SSS) concentrations and the pre-treated sludge was used as raw material for bioflocculant-producing bacteria R3 to produce bioflocculant. After 60 h of fermentation, three forms of bioflocculant (broth, capsular, and slime) were extracted, and maximum broth bioflocculant of 2.9 and 4.1 g L-1 were produced in sterilized and alkaline-thermal treated sludge as compared to that of 1.8 g L-1 in acid-thermal treated sludge. Higher bioflocculant quantity was produced in SS of 15, 25, and 35 g L-1 compared to that produced in SS of 45, 55, and 65 g L-1. Bioflocculant combined with 0.5 g Ca2+ in 1.0 L kaolin suspension acted as conditioning agent, and maximum flocculating activity of 94.5% and 92.8% was achieved using broth and slime bioflocculant, respectively. The results demonstrated that wastewater sludge could be used as sources to prepare bioflocculants. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据