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• Goel, S
• Sharma, A
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• Sharma, A
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• Goel, S
• Sharma, A

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Int. J. Environ. Res. Public Health 2004, 1(2), 132-137; doi:10.3390/ijerph2004020132

Article

Metal Ion Effect on BOD Exertion at Different Temperatures

Susheel K. Mittal* , Siloni Goel and Ajay Sharma

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

Download PDF Full-Text [443 KB, uploaded 2 October 2008 14:28 CEST]

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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