Treatment of biodigested distillery effluents with the help of emulsified liquid membrane permeation (ELMP)

Abstract

Emulsified liquid membrane (ELM) is a technique for effluent treatment has received wide attention in recent years due to ease of operation, lower power consumption and modular design. The odorous distillery effluent used for the present investigation was collected from the LORDS INDUSTRIES Ltd, Nadganj of the Ghazipur district in Uttar Pradesh, India. This effluent with high BOD and COD was treated employing ELM (External phase-distillery waste water of known concentration, membrane material-xylene (as base material), liquid paraffin (LP), surfactant- Span 80, and Internal phase-distilled water). Various EL membranes were prepared by varying concentration of xylene (2-5%), Span-80 (5-13%), treated effluent(20- 100%), agitation speed(3000-8000rpm), time (2-15 minutes) and M/E ratio (0.1%-0.3%).the initial value of BOD (1150 ppm) and COD (11680 ppm) reduced to the level of 46 ppm and 468 ppm, respectively with ELM membrane (Xylene 7.5%, Span-80 10%, 4800 rpm and M/E ratio 0.3). Under optimum condition efficiency of ELM was approximately 96%, so the process could be scale up for the large scale for distillery waste treatment. © Research India Publications.