𝔖 Bobbio Scriptorium
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Effects of Oil Refinery Effluents on Selenastrum capricornutum PRINTZ

✍ Scribed by Dr. J. P. Gaur; Prof. Dr. H. D. Kumar

Book ID
102870140
Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
568 KB
Volume
71
Category
Article
ISSN
1434-2944

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✦ Synopsis

Laboratory-based bioassay experiments using Selenastrum capricornutum PRINTZ as the test organism were conducted to evaluate the potentiality of refinery effluents to sustain algal growth. The raw effluents were remarkably toxic to the test alga, but satisfactory algal growth occurred in (diluted) 0.01 o/" effluents. The effluents from subsequent treatment stages requlred much less dilution to eliminate the toxicity. This study implicates oil and phenol in the reduction of algal growth in refinery effluents. A highly significant negative correlation was found between the final yield of the test alga and the concentration of oil or phenol in the culture suspension. The bioassay experiments therefore point to the toxic nature of refinery effluents. On the basis of these findings i t is recommended that proper dilution of refinery effluents is necessary before they are discharged into m y body of water.

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