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Water 2018, 10(6), 712;

Use of the Coenobial Green Algae Pseudopediastrum boryanum (Chlorophyceae) to Remove Hexavalent Chromium from Contaminated Aquatic Ecosystems and Industrial Wastewaters

Department of Biotechnology, Kazimierz Wielki University, 85-671 Bydgoszcz, Poland
Author to whom correspondence should be addressed.
Received: 8 May 2018 / Revised: 29 May 2018 / Accepted: 30 May 2018 / Published: 31 May 2018
(This article belongs to the Special Issue Freshwater Quality as a Driver of Aquatic Ecosystem Health)
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The idea of using microorganisms, especially microalgae, as biosorbents of heavy metals deserves particular attention due to their natural biosorbent properties and the relatively simple and inexpensive methods of obtaining their biomass. The cosmopolitan microscopic green alga of the genus Pseudopediastrum is an example of an organism with the desired biosorption properties. The aim of the study was to assess the potential use the dry biomass of Ps. boryanum var. longicorne in the process of biosorption of chromium(VI) (Cr(VI)) ions from aqueous solutions. Biomass of microalgae was cultivated in the photobioreactor conditions (L-S2T2 medium, light intensity of 4000 lx, photoperiod 12L:12D). The biomass obtained was used for the biosorption of Cr(VI) ions from aqueous solution. The effect of pH (2–6), biosorbent concentration (0.5–2 g/L) and initial chromium concentration (10–100 mg/L) was examined. The highest removal of Cr(VI) ions (70%) was observed at pH 2, initial chromium concentration of 10 mg/L and a biomass concentration of 2 g/L. At this chromium concentration, the sorption capacity of the microalga was the lowest. The results indicated that the biomass of the Ps. boryanum is suitable for the development of efficient biosorbent for the removal of Cr(VI) from wastewater. View Full-Text
Keywords: green algae; Pseudopediastrum boryanum; biosorbent; wastewater; chromium(VI) green algae; Pseudopediastrum boryanum; biosorbent; wastewater; chromium(VI)

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Sutkowy, M.; Kłosowski, G. Use of the Coenobial Green Algae Pseudopediastrum boryanum (Chlorophyceae) to Remove Hexavalent Chromium from Contaminated Aquatic Ecosystems and Industrial Wastewaters. Water 2018, 10, 712.

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