Biomethanation of Dye Industry Wastewater
Journal Title: Universal Journal of Environmental Research and Technology - Year 2012, Vol 2, Issue 3
Abstract
Dyestuff sector is one of the core chemical industries in India. Maharashtra and Gujarat account for 90% of dyestuff production in India due to the availability of raw materials and dominance of textile industry in these regions. During industrial processing up to 40 % of the used dyestuffs are released in to the process water. The untreated effluents released from the dyeing units cause a major threat to the environment. Direct discharge of dye effluents causes formation of toxic aromatic amines in receiving media. The majority of colour removal techniques work either by concentrating the colour into the sludge or by partial or complete breakdown of the coloured molecules. Although a variety of effective physical and chemical treatment methods are commercially available, most of them are either expensive, not adaptable to a wide range of dyes, or do not completely solve the problem of complete decolourization of dye containing industrial effluents. Biodegradation have been explored as a method of biological treatment of dye. Hence in a present study attempts were made to biologically treat dye industry wastewater by biomethanation. Anaerobic digestion of 25% dye industry wastewater was studied under various environmental conditions and observed that COD reduction of 88.88%.BOD reduction of 68.06% giving 73.57% colour removal. In addition, anaerobic treatment gave valuable fuel in the form of methane which adds to the revenue of the industry. The sludge obtained after anaerobic treatments posses good manurial value and hence adds to revenue of industry.
Authors and Affiliations
Sahasrabudhe Madhuri and Pathade Girish
Keywords
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