Authors: S. Dutta, S.A. Parsons, C. Bhattacharjee, S. Datta, S. Bandyopadhyay, P. Jarvis
Addresses: Department of Chemical Engineering, Durgapur Institute of Advanced Technology and Management, G.T. Road, Rajbandh Durgapur – 12, India. ' Centre for Water Science, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK. ' Chemical Engineering Department, Jadavpur University, Jadavpur, Kolkata 700032, India. ' Chemical Engineering Department, Jadavpur University, Jadavpur, Kolkata 700032, India. ' Ceramic Membrane Division, Central Glass and Ceramic Research Institute, Jadavpur, Kolkata 700032, India. ' Centre for Water Science, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK
Abstract: Adsorption is a well accepted process for dye-house effluent treatment, but disposal or regeneration of spent adsorbent is the major drawback. Regeneration and reuse of adsorbent can reduce the cost of sludge disposal, consequently the water treatment cost. Dye used for this study is Reactive Brown 18 and TiO2 was used as adsorbent, which can be regenerated efficiently using UV illumination. Adsorbed dyes were oxidised by photocatalytic reaction and the non-toxic final products can be discharged into the environment. Experimental results show that adsorption is effective at acidic condition (pH 3). Optimum TiO2 dose is 1 g.l−1 for a feed containing 100 mg.l−1 dye concentration. Results of decolourisation experiment show that more than 80% dye decolourisation is possible and the regenerated adsorbent can be used further.
Keywords: wastewater treatment; reactive dyes; RB 18; Reactive Brown 18; adsorption; photocatalysis; titanium dioxide; titania; textile dyes; dye effluent; decolourisation; adsorbent regeneration; adsorbent reuse.
International Journal of Environmental Engineering, 2010 Vol.2 No.1/2/3, pp.202 - 211
Published online: 02 Dec 2009 *Full-text access for editors Access for subscribers Purchase this article Comment on this article