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Metal Ion Effect on BOD Exertion at Different Temperatures
School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology (Deemed University) Patiala, 147004, India
* Author to whom correspondence should be addressed.
Received: 25 July 2004; Accepted: 26 August 2004 / Published: 30 September 2004
Abstract: The toxic effect of metal ions like chromium (Cr3+), cobalt (Co2+), nickel (Ni2+), copper (Cu2+), cadmium (Cd2+) and lead (Pb2+) on biochemical oxygen demand (BOD) of synthetic wastewater samples has been studied at different temperatures i.e., 15°C, 20°C, 25°C and 30°C. Experiments were conducted for BOD exertion in presence (10 ppm of each metal ion) and in the absence of metal ions at different temperatures. Transition metal ions like Cr3+, Co2+, Ni2+ and Cu2+ show an increase in relative percentage inhibition with increasing atomic number. BOD inhibition in presence of Cd2+ and Pb2+ is relatively large. The metal ions under study are found to be highly toxic to microbes.
Keywords: BOD; metal ion effect; temperature
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Mittal, S.K.; Goel, S.; Sharma, A. Metal Ion Effect on BOD Exertion at Different Temperatures. Int. J. Environ. Res. Public Health 2004, 1, 132-137.
Mittal SK, Goel S, Sharma A. Metal Ion Effect on BOD Exertion at Different Temperatures. International Journal of Environmental Research and Public Health. 2004; 1(2):132-137.
Mittal, Susheel K.; Goel, Siloni; Sharma, Ajay. 2004. "Metal Ion Effect on BOD Exertion at Different Temperatures." Int. J. Environ. Res. Public Health 1, no. 2: 132-137.