[内分泌干扰物邻苯二甲酸二正丁酯的生物降解特性研究]

[Study on biodegraded characteristics of endocrine disruptor di-n-butyl phthalate].

作者信息

Wang Lin, Luo Qifang

机构信息

Institute of Environmental Medicine, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China.

出版信息

Wei Sheng Yan Jiu. 2003 May;32(3):187-9.

PMID:12914274

Abstract

The biodegraded Characteristics of di-n-butyl Phthalate (DBP), endocrine disruptor were studied. The activated sludge was acclimated using DBP as the only carbon in the culture medium. DBP concentration was increased progressively from 0.05 g/L to 0.5 g/L. The degradation tests were carried out on the constant temperature table using the acclimated sludge at different PH, temperature, DBP concentration and hydraulic residence time. The results showed that DBP could be rapidly degraded-nearly 90% in 48 hours. The appropriate condition for DBP degradation was pH 6.0-8.0, temperature 25 degrees C-35 degrees C, DBP concentration no more than 300 mg/L, and hydraulic residence time 12 h-24 h. The form of biodegradation of DBP can be described as the first-order reaction model.

摘要

研究了内分泌干扰物邻苯二甲酸二丁酯（DBP）的生物降解特性。以DBP作为培养基中唯一的碳源对活性污泥进行驯化。DBP浓度从0.05 g/L逐步提高到0.5 g/L。使用驯化后的污泥在不同的pH值、温度、DBP浓度和水力停留时间下在恒温台上进行降解试验。结果表明，DBP可被快速降解——48小时内降解近90%。DBP降解的适宜条件为pH值6.0 - 8.0、温度25℃ - 35℃、DBP浓度不超过300 mg/L以及水力停留时间12小时 - 24小时。DBP的生物降解形式可用一级反应模型来描述。