Review article
https://doi.org/10.2478/10004-1254-62-2011-2063
Azo Dyes, Their Environmental Effects, and Defining a Strategy for Their Biodegradation and Detoxification
Ivana Gudelj
; HIPALAB d.o.o.1, Zagreb, Hrvatska
Jasna Hrenović
; Prirodoslovno-matematički fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Tibela Landeka Dragičević
; Prehrambeno-biotehnološki fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Frane Delaš
; Prehrambeno-biotehnološki fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Vice Šoljan
; Ekološki inženjering, Poreč, Hrvatska
Hrvoje Gudelj
; HIPALAB d.o.o.1, Zagreb, Hrvatska
Abstract
Intense industrial development has been accompanied by the production of wastewaters of very complex content, which pose a serious hazard to the environment, put at risk sustainable development, and call for new treatment technologies that would more effectively address the issue. One particular challenge in terms of science and technology is how to biodegrade xenobiotics such as azo dyes, which practically do not degrade under natural environmental conditions. These compounds tend to bioaccumulate in the environment, and have allergenic, carcinogenic, mutagenic, and teratogenic properties for humans. Removal of azo dyes from effl uents is mostly based on physical-chemical methods. These methods are often very costly and limited, as they accumulate concentrated sludge, which also poses a significant secondary disposal problem, or produce toxic end-products. Biotechnological approach may offer alternative, lowcost biological treatment systems that can completely biodegrade and detoxify even the hard-to-biodegrade azo dyes.
Keywords
biological decolourisation; biotechnology; coloured wastewaters; mixed microbial culture
Hrčak ID:
65318
URI
Publication date:
16.3.2011.
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