Biodegradation of pyridine by Paracoccus sp. KT-5 immobilized on bamboo-based activated carbon.
The performance of pyridine degradation by Paracoccus sp. strain KT-5 immobilized on bamboo-based activated carbon was investigated and compared with that of free cells. The results showed that Paracoccus sp. was able to attach well on the surface and pores of bamboo-carbon. Compared with freely suspended cells, the pyridine-degrading rate of the immobilized cells was higher when initial pyridine concentration was in the range of 489-1476 mg/L, suggesting that the efficiency of pyridine degradation by Paracoccus sp. strain KT-5 was enhanced significantly by immobilization technique. Additionally, the attached biomass on the bamboo-carbon increased from 391.9 to 430-500 mg/g during pyridine degradation. Furthermore, the semi-continuous degradation of pyridine by immobilized cells were carried out when the pyridine concentration was in the range of 293-1476 mg/L, the results demonstrated the feasibility and reusability of immobilized cells for pyridine degradation.
Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, PR China.
Qiao
Q
Lin
Wen
W
Donghui
Wang
W
Jianlong
D001673:Biodegradation, Environmental; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000737:chemistry*; D002478:Cells, Cultured; D002606:Charcoal / Q000737:chemistry; D007700:Kinetics; D008853:Microscopy / Q000379:methods; D008855:Microscopy, Electron, Scanning / Q000379:methods; D010230:Paracoccus / Q000378:metabolism*; D011725:Pyridines / Q000737:chemistry*; D031787:Sasa; D013997:Time Factors
D011725:Pyridines; D002606:Charcoal; D002244:Carbon; C023666:pyridine