Abstract
Catalase is a cellular enzyme produced during oxidative metabolism of aerobic living systems which degrades toxic hydrogen peroxide produced during oxidative metabolism in cells. Measurements of catalase permit the study of organic change and microbial density. The technique is used to measure the rate of self purification of two rivers and sets of stabilization ponds in India and activated sludge plant and slurry tanks in Britain. Catalase surveys have been widely used to evaluate wastewater quality and results compare closely with those using long standing techniques to measure BOD and E. coli (Gaddad et al., 1982). Catalase is active between pH 4 and 10 and a temperature range which accommodates tropical and temperate circumstances. The test requires only minimal time to complete using simple reagents. Its full potential will be realized only when comparative models relate results to standard procedures and electronic catalase meters become available.
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