College of Environmental Sciences and Engineering, Peking University, Beijing, People's Republic of China.
J Hazard Mater. 2010 Sep 15;181(1-3):916-22. doi: 10.1016/j.jhazmat.2010.05.099. Epub 2010 May 27.
In the process of the biodegradation of pyridine and quinoline, ammonium is often generated because of the transformation of N from pyridine and quinoline. Zeolite has been proven to be an effective sorbent for the removal of the ammonium. The natural zeolite can be modified to be the macroporous carrier in the biological wastewater treatment process. In this study, a specific bio-zeolite composed of mixed bacteria (a pyridine-degrading bacterium and a quinoline-degrading bacterium) and modified zeolite was used for biodegradation and adsorption in two types of wastewater: sterile synthetic and coking wastewater. The experimental results indicated that pyridine and quinoline could be degraded simultaneously by the mixed bacteria. Furthermore, NH(4)(+)-N transformed from pyridine and quinoline could be removed by the modified zeolite. In addition, the bacterial community structures of the coking wastewater and the bio-zeolite were monitored by the amplicon length heterogeneity polymerase-chain reaction (LH-PCR) technique. Both LH-PCR results and scanning electron microscope (SEM) observations indicated that the microorganisms, including BW001 and BW003, could be easily attached on the surface of the modified zeolite and that the bio-zeolite could be used in the treatment of wastewater containing pyridine and/or quinoline.
在吡啶和喹啉的生物降解过程中，由于氮从吡啶和喹啉中的转化，经常会产生铵。沸石已被证明是去除铵的有效吸附剂。天然沸石可以经过改性成为生物废水处理过程中的大孔载体。在这项研究中，使用由混合细菌（吡啶降解菌和喹啉降解菌）和改性沸石组成的特定生物沸石，在两种废水（无菌合成废水和焦化废水）中进行生物降解和吸附。实验结果表明，混合细菌可以同时降解吡啶和喹啉，并且改性沸石可以去除由吡啶和喹啉转化而来的 NH(4)(+) -N。此外，还通过扩增片段长度多态性聚合酶链反应（LH-PCR）技术监测了焦化废水和生物沸石的细菌群落结构。LH-PCR 结果和扫描电子显微镜（SEM）观察都表明，包括 BW001 和 BW003 在内的微生物可以很容易地附着在改性沸石的表面上，并且生物沸石可以用于处理含有吡啶和/或喹啉的废水。
