Open AccessAn overview to photo-catalytic degradation of dyes in waste water
Author(s) -
Mohd. Hanief Najar,
Ishtiyaq Ahmed Najar
Publication year - 2019
Publication title -
applied chemical engineering
Language(s) - English
Resource type - Journals
ISSN - 2578-2010
DOI - 10.24294/ace.v1i4.615
Subject(s) - creatures , degradation (telecommunications) , environmental remediation , environmentally friendly , textile , environmental science , environmental chemistry , photodegradation , catalysis , waste management , materials science , biochemical engineering , chemistry , nanotechnology , photocatalysis , organic chemistry , contamination , computer science , composite material , engineering , telecommunications , ecology , archaeology , biology , natural (archaeology) , history
Organic dyes used in textile and food industries are the important sources of environmental contaminations due to their non-bio degradability and high toxicity to aquatic creatures and carcinogenic effects on humans. This demands environmental remediation by the use of techniques which are environmentally benign. For this purpose, a general overview of dye degradation by light in the presence of materials as photo-catalysts has been given. The mechanism of action has also been described. Importantly, the materials involved in dye degradation usually involve nano-composites of either conducting polymers or metal-oxidesor graphene based systems which are insoluble in aqueous solutions, hence will be environmentally benign and can therefore be recovered after use.