|Table of Contents|

Biodegradation of Pyridine by Immobilized Rhodocyclus Gelatinosus

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2008年04期
Page:
522-525
Research Field:
Publishing date:

Info

Title:
Biodegradation of Pyridine by Immobilized Rhodocyclus Gelatinosus
Author(s):
SONG Xiu-lan1JI Wen-kan2ZHANG Dong1TIAN Jianmin3
1.College of Environment Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;2.Shanxi Branch Corporation,China Petroleum and Chemical Corporation,Taiyuan 030024,China;3.College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China
Keywords:
immobilized cells pyridine kinetics degradation rate
PACS:
X703
DOI:
-
Abstract:
Immobilized Rhodocyclus gelatinosus is prepared by aggregation-cross bridging method,and its kinetics is also performed for degradation of pyridine under microaerobic and anaerobic conditions.The results show that when pyridine concentration is 100 mg/L,pyridine degradation kinetic equation by untamed immobilized Rhodocyclus gelatinosus follows the zero-order under microaerobic and anaerobic conditions.The degradation rate constant under microaerobic condition is bigger than that under anaerobic condition,indicating that the bacteria is fit for degradation under microaerobic condition.Pyridine degradation by tamed immobilized Rhodocyclus gelatinosus also follows the zero-order.The degradation rate constant increases with the increase of initial pyridine concentration in the range of 50~200 mg/L,while the degradation rate constant decreases with the increase of initial pyridine concentration in the range of 300~500 mg/L.Under microaerobic condition,nitrogen in pyridine can be converted into ammonia.

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Last Update: 2012-12-19