Development of a bioprocess combined with membrane technology for the treatment and recycling of textile effluent |
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| Authors: | Thuy Do Jinsong Shen Gordon Cawood Richard Jenkins |
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| Affiliation: | Textile Engineering and Materials Research Group, De Montfort University, The Gateway, Leicester LE1 9BH, UK. Email:;Quantum Clothing Ltd/Stevensons, Ambergate, Derbyshire DE56 2EX, UK;Faculty of Health and Life Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, UK |
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| Abstract: | A mixed culture of dye-decolorising Pseudomonas spp. was immobilised on polyurethane foam, and used in a bench-scale continuous culture bioreactor to treat textile effluent for colour removal. The provision of soluble wheat starch (0.2% w/v) to the culture medium promoted growth of biomass and enhanced decolorisation of effluent in the bioreactor. The bioprocess was further combined with membrane filtration technology to improve the quality of treated effluent. The treated effluent showed 90, 82 and 60% reduction in COD, BOD5 and toxicity levels, respectively, and had potential for re-use in dyeing processes. The colour difference of the cotton fabrics dyed using the treated effluent samples compared to those dyed using normal supply water was found to be industrially acceptable. The described process could improve treatment efficiency and allow water recycling within the textile factory. |
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