Physico-Chemical And Bacteriological Profile Of Effluents Collected From Electroplating Industries

IJEP 41(2): 194-201 : Vol. 41 Issue. 2 (February 2021)

Devangee P. Shukla and Nayan K. Jain*

Gujarat University, Lifescience Department, School of Science, Ahmedabad, Gujarat – 380 009, India


The present study was envisaged to the various physico-chemical and bacteriological properties of electroplating industrial effluents collected from GIDC estate of Vatva, Ahmedabad and GIDC estate of Kalol, kalol. The various parameters, like pH, total dissolved solid (TDS), total suspended solids (TSS), ammonical nitrogen, fluoride, chloride, sulphate, phosphate, chemical oxygen demand (COD), biochemical oxygen demand (BOD), hardness, calcium, magnesium, sodium, alkalinity as CaCO3, total organic carbon (TOC) alongwith heavy metals, namely zinc, copper, nickel, iron, cadmium, lead and chromium were tested from electroplating industrial effluents. The comparison of various parameters of the effluents with standards prescribed by the Central Pollution Control Board (CPCB), results perceived that pH of inlet effluents were lower than standard pH range. TSS values were within the standard range. Phosphate was found higher than prescribed standards. However, heavy metals, like copper, nickel, iron and chromium were also present in higher concentration and these metals are very much toxic for environment. Thus, the electroplating effluents are dreadfully polluting the environment and entail proper treatment before disposal. From bacteriological study total 57 isolates were isolated, 30 isolates from vatva GIDC electroplating industrial effluents and 27 isolates from kalol GIDC electroplating industrial effluents. Out of 57 isolates 10 were found Gram (-ve) and 47 were Gram (+ve). Out of total isolates, 47 were found motile and 10 were found non-motile in nature. These isolates were morphologically characterized; five isolates B2, B7, B8, B10 and B17 were found to be morphologically distinct. The isolates were also screened in different parameters of biochemical and environmental condition, namely salt concentrations and temperature. These indigenous isolates can be used as a bioremediation purpose for removing heavy metals from the industrial effluents. The bioremediation of heavy metals using microorganisms has received a great deal of attention in recent years, not only as a scientific novelty but also for its potential application in industry.


Heavy metal contamination, Bioremediation, Electroplating industries, Electroplating effluents, Physico-chemical parameters, Bacteriological profile


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