固定化微生物降解环境内分泌干扰物DBP

Study on degradation of immobilized microorganism on endocrine disrup tor di-n-butyl phthalate

摘要:
目的研究固定化微生物降解环境内分泌干扰物邻苯二甲酸二丁酯(DBP)的生物特性.
方法将驯化活性污泥用聚乙烯醇包埋, 并制成固定化小球.增殖培养后, 在不同溶解氧、pH值、温度下对不同浓度的DBP水样进行降解试验.
结果固定化微生物增殖培养后对DBP的降解率较游离活性污泥高, 并且对温度、pH值的适应范围变宽, 其降解过程符合酶促一级反应动力学模型.
结论驯化获得的DBP降解优势菌群经固定、增殖培养后能有效降解底物DBP, 且为酶促一级反应.

Abstract:
Objective To study the biodegr adation characteristics of immobilized microorganism on endocrine disruptor di -n-butyl Phthalate(DBP).
Methods A cclimated activated sludge was made to immobilized microorg anism using polyvinyl alcohol as entrapment agent.The immobilized microor ganism degraded DBP of different concentration at different temperature, soluble oxygen and pH after cultured.
Results I mmobilized microorganism degraded DBP effectively and was more adapted to temperature, pH than acclimated activated sludge.The form of biodegradation of DBP can be described as the first -order reaction model.
Conclusion The superiority bacteria can deg ade DBP effectively after being entrapped, cultured.The reaction was accor ding with the first-order model.