Metal Ion Effect on BOD Exertion at Different Temperatures

Susheel K. Mittal, Siloni Goel and Ajay Sharma
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Susheel K. Mittal: School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology (Deemed University) Patiala, 147004, India
Siloni Goel: School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology (Deemed University) Patiala, 147004, India
Ajay Sharma: School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology (Deemed University) Patiala, 147004, India

IJERPH, 2004, vol. 1, issue 2, 1-6

Abstract: The toxic effect of metal ions like chromium (Cr 3+ ), cobalt (Co 2+ ), nickel (Ni 2+ ), copper (Cu 2+ ), cadmium (Cd 2+ ) and lead (Pb 2+ ) 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 Cr 3+ , Co 2+ , Ni 2+ and Cu 2+ show an increase in relative percentage inhibition with increasing atomic number. BOD inhibition in presence of Cd 2+ and Pb 2+ is relatively large. The metal ions under study are found to be highly toxic to microbes.

Keywords: BOD; metal ion effect; temperature (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2004
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