The analcime-bearing rock immobilized microalgae: Stress resistance, psychrotolerance, phenol removal.

Tatyana N Shchemelinina, Elena M Anchugova, Olga B Kotova, Dmitry A Shushkov

Bioresource technology 2021 Feb

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The development of synergetic biogeocomplices for biodegradation of recalcitrant organic pollutants is an urgently needed to achieve the environmental sustainability. The biogeosorbent based on the analcime-bearing rock immobilized Chlorella vulgaris f. globosa was developed to remove phenol from polluted waterbodies. The microalgae biofilm formation on the ABR resulted in 1.6 × 104 cells/mm2. Stress testing showed that low temperatures up to -30 °C did not adversely affect the cell viability, the dehydrogenase activity of the biogeosorbent exposed was 5.1 mg of formazan/mL. Under phenol-stress conditions, aggregation of suspended cells was observed. The biogeosorbent was more stress resistant than the microalgal suspension, and also reduced the time of exposure and had no secondary waste in comparison with the ABR. After having been treated, phenol removal was found to increase from 70 to 72% for MA, from 27 to 93% for ABR, from 82 to 93% for the biogeosorbent. Copyright © 2020 Elsevier Ltd. All rights reserved.

Citation

Tatyana N Shchemelinina, Elena M Anchugova, Olga B Kotova, Dmitry A Shushkov. The analcime-bearing rock immobilized microalgae: Stress resistance, psychrotolerance, phenol removal. Bioresource technology. 2021 Feb;322:124560