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Abstract: Immersed membrane bioreactor (IMBR) has emerged as a novel potential technology which is considered globally as potent technology, primarily for wastewater treatment. It offers quality improvement in effluents treatment compared to other technological systems. It also offers potential benefits for the bioprocesses where product formation and separation is desired simultaneously in a compact container. This review gives insight for the wide range applications of IMBR focussing on anaerobiosis. It discusses the significance, advantages and drawbacks of IMBR against the conventional methods, highlighting the external membrane bioreactors. While the commercial significance of IMBR is obvious for industrial and municipal wastewater treatment, the current focus is shifting on other applications such as anaerobic bioprocesses. Though the IMBR technology is generally considered hand-in-hand as sustainable technology, the major bottleneck in its application at commercial scale for wastewater treatment seems its economic feasibility and compatibility. Among the technical issues, the membrane fouling is considered as a major problem for which several strategies have been developed to overcome the problem, though there is no complete or universal solution to this problem. [Copyright &y& Elsevier]

Abstract: An anaerobic digestion technique was applied to textile dye wastewater aiming at the colour and COD removal. Pet bottles of 5L capacity were used as reactor which contains methanogenic sludge of half a liter capacity which was used for the treatment of combined synthetic textile dye and starch wastewater at different mixing ratios of 20:80, 30:70, 40:60, 50:50 and 60:40 with initial COD concentrations as 3520, 3440, 3360, 3264 and 3144mgL−1, respectively. The reactor was maintained at room temperature (30±3°C) with initial pH of 7. The maximum COD and colour removal were 81.0% and 87.3% at an optimum mixing ratio of 30:70 of textile dye and starch wastewaters. Both Monod’s and Haldane’s models were adopted in this study. The kinetic constants of cell growth under Haldane’s model were satisfactory when compared to Monod’s model. The kinetic constants obtained by Haldane’s model were found to be in the range of μ max =0.037–0.146h−1, K s =651.04–1372.88mgL−1 and K i =5681.81–18727.59mgL−1. [ABSTRACT FROM AUTHOR]