Decolorization of dye wastewaters by biosorbents: a review.
Dye wastewater is one of the most difficult to treat. There has been exhaustive research on biosorption of dye wastewater. It is evolving as an attractive option to supplement conventional treatment processes. This paper examines various biosorbents such as fungi, bacteria, algae, chitosan and peat, which are capable of decolorizing dye wastewaters; discusses various mechanism involved, the effects of various factors influencing dye wastewater decolorization and reviews pretreatment methods for increasing the biosorption capacity of the adsorbents. The paper examines the mismatch between strong scientific progress in the field of biosorption and lack of commercialization of research.
Srinivasan
Asha
A
Faculty of Engineering and Applied Science, University of Regina, Regina, SK, Canada.
Viraraghavan
Thiruvenkatachari
T
D000327:Adsorption; D001419:Bacteria / Q000378:metabolism; D001673:Biodegradation, Environmental; D048271:Chitosan / Q000737:chemistry; D004396:Coloring Agents / Q000737:chemistry* / Q000378:metabolism; D056890:Eukaryota / Q000378:metabolism; D005658:Fungi / Q000378:metabolism; D012987:Soil; D013783:Textile Industry; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000378:metabolism; D018508:Water Purification / Q000379:methods*
D004396:Coloring Agents; D012987:Soil; D014874:Water Pollutants, Chemical; D048271:Chitosan