Elizalde-González M P, Fuentes-Ramírez L E, Guevara-Villa M R G
Centro de Química, Instituto de Ciencias, Universidad Autónoma de Puebla, Apdo. Postal J-55, Puebla, Pue. 72571, Mexico.
J Hazard Mater. 2009 Jan 30;161(2-3):769-74. doi: 10.1016/j.jhazmat.2008.04.023. Epub 2008 Apr 14.
The degradation of two immobilized dyes by Klebsiella sp. UAP-b5 was studied. In batch experiments, the azo dyestuffs Basic Blue 41 and Reactive Black 5 were immobilized onto corn cobs by adsorption, and the adsorption process was characterized by a pseudo-second-order kinetic equation. Klebsiella sp. UAP-b5 was previously isolated from the corn waste and shown to decolorize these dyes in liquid systems. Here, we demonstrate anaerobic decolorization and reductive biodegradation of these dyes by means of spectrophotometry, HPLC, and IR spectroscopy of the solid waste and desorption solutions. We also demonstrate adsorption of compounds that resemble known degradation products.
研究了克雷伯氏菌属UAP-b5对两种固定化染料的降解情况。在分批实验中，通过吸附将偶氮染料碱性蓝41和活性黑5固定在玉米芯上，吸附过程用伪二级动力学方程进行表征。克雷伯氏菌属UAP-b5先前从玉米废料中分离得到，已证明其能在液体系统中使这些染料脱色。在此，我们通过对固体废物和解吸溶液进行分光光度法、高效液相色谱法和红外光谱分析，证明了这些染料的厌氧脱色和还原生物降解。我们还证明了对类似已知降解产物的化合物的吸附作用。
