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

  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.