Factors Affecting the Complete Mineralization of Azo Dyes
Factors Affecting the Complete Mineralization of Azo Dyes
复制标题
DOI：
10.1007/698_2009_50
复制
发表时间：
2010-01-01
期刊：
影响因子：
--
通讯作者：
Marzona, Mario
中科院分区：
文献类型：
--
作者：
Bardi, Laura;Marzona, Mario
偶氮染料是一种复杂的有机化合物，一般不易被生物降解。从它们的催化剂中形成了几种有毒和致癌的化合物，特别是当它们的脱色是通过偶氮基团的还原裂解来实现的时候。因此，染料和中间体的完全降解对于防止对人类健康的风险是必要的。它们的矿化通常可以通过好氧处理或两步厌氧/好氧处理来实现。一些环境和生理因素可以影响微生物活性，从而影响整个生物降解过程的功效和有效性。氧，生物利用度，吸附，营养物质和共代谢诱导，染料浓度，pH值，温度和盐度的作用进行处理。
Azo dyes are complex compounds generally recalcitrant to biodegradation. From their catabolism several toxic and carcinogenic compounds are formed, in particular when their decolorization is reached through a reductive cleavage of the azo groups. For this reason the full degradation of the dyes and the intermediates is necessary to prevent risks for human health. Their mineralization can usually be reached with aerobic treatments or with two-steps anaerobic/aerobic treatments. Several environmental and physiological factors can influence the microbial activity and consequently the efficacy and effectiveness of the complete biodegradation processes. The roles of oxygen, bioavailability, adsorption, nutrients and cometabolic induction, dye concentration, pH, temperature, and salinity are treated.