期刊
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
卷 97, 期 14, 页码 6525-6535出版社
SPRINGER
DOI: 10.1007/s00253-012-4453-x
关键词
Bioaugmentation; Special mixed microorganisms; Black liquor; High-alkaline conditions; Alkaline lignocellulolytic enzymes
资金
- China National Funds for Distinguished Young Scientists [50925417]
- National Natural Science Foundation of China [50800301]
Black liquor (BL) is a notoriously difficult wastewater to treat due to the economic and efficiency limitations of physiochemical methods and intrinsic difficulties with bioremediation strategies caused by the high pH (10-13) and lignin content. This study investigated the feasibility of a novel bioaugmentation strategy for BL treatment, which uses a mixed microorganism culture of lignocellulose-degrading microorganisms isolated from degraded bamboo slips. Black liquor treatment was assessed in terms of chemical oxygen demand (COD) and color removal with a sequencing batch reactor organic loading rate of 9 kg COD/L center dot day under highly alkaline conditions (pH 10). Results revealed that bioaugmented activated sludge treatment of BL with special mixed microorganisms significantly enhanced the removal efficiency of COD, color, and lignin from the wastewater up to 64.8, 50.5, and 53.2 %, respectively. Gel permeation chromatography profiles showed that the bioaugmentation system could successfully degrade high molecular lignin fragments in black liquor. This work confirms bioaugmentation as a feasible alternative strategy for enhanced biological treatment of wastewater with high lignin content and high organic load rate under strongly alkaline conditions.
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