Coupling of waste water treatment with storage polymer production

被引：31

作者：

Chua, H ^{[1
]}

Yu, PHF ^{[1
]}

Ho, LY ^{[1
]}

机构：

[1] HONG KONG POLYTECH UNIV,DEPT APPL BIOL & CHEM TECHNOL,KOWLOON,HONG KONG

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 1997年 / 63-5卷 / 1期

关键词：

activated sludge; carbon-nitrogen ratio; poly-hydroxyalkanoates; storage polymer accumulation;

D O I：

10.1007/BF02920461

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Storage polymers in bacterial cells can be extracted and used as biodegradable thermoplastics. However, widespread applications have been limited by high production costs. Ln this study, activated sludge bacteria in a conventional waste water treatment system were induced, by controlling the carbon-nitrogen (C:N) ratio in the reactor liquor, to accumulate storage polymers. Specific polymer yield increased to a maximum of 0.374 g polymer/g cell when the C:N ratio was increased from from 24 to 144, whereas specific growth yield decreased with increasing C:N ratio. An optimum C:N ratio of 96 provided the highest overall polymer production yield of 0.093 g of polymer/g of carbonaceous substrate consumed, without significantly affecting the organic treatment efficiency in the waste water treatment system.

引用

页码：627 / 635

页数：9