000086 Yadav S;Ram Chandra (Environmental Microbiology Section, Industrial Toxicology Research Centre, Post Box No. 80, M.G. Marg, Lucknow-226 001, Email: firstname.lastname@example.org) : Inhibitory effect of melanoidins, phenols and sulphate present in post methanated distillery effluent (PMDE) for detoxification by defluvibacter lusatiae ITRC PK1 (DQ 659618). Toxic int 2007, 14(2), 171-7.
The effect of melanoidin, phenol and sulphate for detoxification of post methanated distillery effluent (PMDE) by Defluvibacter lusatiae ITRC PKI (DQ 659618) was assessed. The physico-chemical analysis of PMDE revealed high biological oxygen demand (BOD, 29120±10.00 ppm), chemical oxygen demand (COD, 58018.33±23.63 ppm) and dark colour (55026.33±30.00 Co-Pt) with slight alkaline pH (8.53). Phenol (775.66±16.93 ppm) and sulphate (20732.33±28.57 ppm) content were also detected very high in PMDE. Besides, PMDE contained Copper (Cu, 0.228±0.09 ppm), Manganese (Mn, 1.651±0.02 ppm), Iron (Fe, 4.593±0.09 ppm), Nicle (Ni, 0.652±0.00 ppm) and Zinc (Zn, 0.028±0.00 ppm).All physicochemical properties decreased after extraction of melanoidin, phenol and sulphate. While chloride ions were increased after phenol extraction. However, colour decrease was observed only after extraction of melanoidin rather than phenol and sulphate, which indicated that melanoidin, was directly linked with colour of effluent. The uniform sigmoid bacterial growth in effluent was observed after extraction of melanoidin, sulphate and phenol in comparison of control. The toxicity studies on various growth parameters of Lemna minor L. revealed that the growth of Lemna minor L. was inversely proportional to the concentration of pollutants present in PMDE. Thus study revealed that high content of melanoidin, phenol and sulphate in PMDE are inhibitory for bacterial growth and effluent detoxification.
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