Biodegradation of pyridine by Paracoccus sp. KT-5 immobilized on bamboo-based activated carbon.
Biodegradation of pyridine by Paracoccus sp. KT-5 immobilized on bamboo-based activated carbon.
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DOI：
10.1016/j.biortech.2010.02.059
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发表时间：
2010-07
影响因子：
11.4
通讯作者：
Q. Lin;Donghui Wen;Jianlong Wang
中科院分区：
文献类型：
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作者：
Q. Lin;Donghui Wen;Jianlong Wang
研究了以竹基活性炭固定副球菌KT-5菌株对吡啶的降解性能，并与游离细胞的降解性能进行了比较。结果表明，副球菌对竹炭表面和孔隙具有较好的附着能力。与自由悬浮细胞相比，初始吡啶浓度在489 ~ 1476mg/L范围内时，固定化细胞对吡啶的降解率较高，说明采用固定化技术可显著提高副球菌菌株KT-5对吡啶的降解效率。此外，在吡啶降解过程中，竹炭的附着生物量从391.9增加到430 ~ 500mg/g。此外，在吡啶浓度为293 ~ 1476mg/L范围内，进行了固定化细胞对吡啶的半连续降解实验，验证了固定化细胞降解吡啶的可行性和可重复使用性。
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 489–1476mg/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 430–500mg/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 293–1476mg/L, the results demonstrated the feasibility and reusability of immobilized cells for pyridine degradation.