title: Treatment of textile dyehouse effluent using ceramic membrane based process in combination with chemical pretreatment.
abstract: Treatment of highly concentrated dyebath effluent and comparatively dilute composite effluent having mixture of various reactive dyes collected from a cotton fabric dyeing unit was undertaken in the present study. Ceramic microfiltration membrane prepared from a cost effective composition of alumina and clay was used. Prior to microfiltration, a chemical pretreatment was carried out with aluminium sulphate in combination with a polymeric retention aid. An optimum dose of 100 mg/L of aluminium sulphate and 1 ml/L of a commercial flocculant Afilan RAMF was found effective for dye removal (> 98%) from the synthetic solutions of reactive dyes with initial concentration of 150 mg/L in both the single component and two component systems. In the microfiltration study, effect of operating pressure in the permeate flux was observed for both the pretreated and untreated effluents and permeate samples were analyzed for dye concentration, COD, turbidity, TSS, etc. during constant pressure filtration. About 98-99% removal of dyes was obtained in the combined process with COD reduction of 54-64%.
authors.affiliation: Ceramic Membrane Division, CSIR-Central Glass and Ceramic Research Institute (CSIR-CGCRI), 196, Raja S.C. Mullick Road, Kolkata - 700 032, India.
authors.forename: Priyankari
authors.initials: P
authors.lastname: Bhattacharya
authors.forename: Sourja
authors.initials: S
authors.lastname: Ghosh
authors.forename: Swachchha
authors.initials: S
authors.lastname: Majumdar
authors.forename: Sibdas
authors.initials: S
authors.lastname: Bandyopadhyay
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D000538:Aluminum Silicates / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry; D000077215:Clay; D004396:Coloring Agents / Q000737:chemistry*; D005374:Filtration; D005427:Flocculation; D007220:Industrial Waste / Q000032:analysis*; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000538:Aluminum Silicates; D004396:Coloring Agents; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D000537:Aluminum Oxide; D000077215:Clay