Abstract
The present study involves the characterization and microalgal toxicity screening of diagnostic X-ray fixer solution toward utilization as a probable full-scale bioremediation study. The characterization results showed a BOD value of the waste X-ray fixer solution 11,833 ± 485.62 mg/l and 506,733 ± 251.66 ppm COD. The Scendesmus abundans was well grown using BBM, 1500 lx light intensity, 12 h:12 h light and dark conditions with 100 rpm shaking at 25 ± 1 °C on 1-month cultivation. The executed toxicity screening results of the diagnostic fixer solution on S. abundans with different dilutions have shown a promisable growth between 15 and 21 days with the 3 BBM:1 X-ray fixer solution dilution with a maximum cell count of 370 × 104 cells/ml on the 21st day of microalgal cultivation. The present study puts forth the physical and chemical parameters of X-ray fixer solution with proven toxicity tolerance limits of S. abundans toward the probable logical step of algal-based bioremediation of fixer solution.
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