摘要
用废水污泥驯化的菌种对邻苯二甲酸及邻苯二甲酸二甲酯进行降解 ,最优降解条件由四因子四水平正交试验得出 .在最优条件下 ,浓度高达 40 0 0mg/L的邻苯二甲酸可在 5d内降解 99%以上。作为唯一的碳源和能源的邻苯二甲酸二甲酯也能够在好氧条件下降解 ,两种中间产物为邻苯二甲酸一甲酯及邻苯二甲酸 .另外 ,在培养液中加入邻苯二甲酸作为共同底物时 ,可提高邻苯二甲酸二甲酯的降解速率 .图 2表 3参
Microbial degradation of phthalate and dimethyl phthalate esters was investigated using an enrichment culture obtained from sewage sludge. Optimal degradation conditions were determined by an orthogonal test for environmental factors. More than 99% PA at a concentration of 4 000 mg/L was degraded within 5 days under the optimized conditions at an initial pH 6.0, m(C)m(N)m(P)=10051, and NaCl concentration 10 g/L. As the sole source of carbon and energy, dimethyl phthalate (DMP) can be degraded by a culture derived from an acclimated activated-sludge under aerobic conditions and two degradation intermediates were identified as mono-methyl phthalate (MMP) and PA. The addition of PA, one of DMP biodegradation intermediates, resulted in acceleration of DMP degradation rate in the culture. Fig 2, Tab 3, Ref 14
出处
《应用与环境生物学报》
CAS
CSCD
2003年第1期63-66,共4页
Chinese Journal of Applied and Environmental Biology
基金
香港大学和中国科学院部分资助研究项目~~
