Hexavalent chromium removal from water by microalgal-based materials: Adsorption, desorption and recovery studies.

Clicks: 304
ID: 38550
2019
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Abstract
The current study presents a comprehensive comparison towards the potential of different microalgal-based materials for the removal of hexavalent chromium (Cr(VI)) from water. Among the tested materials, microalgal biochar showed the highest removal efficiency (100%) of Cr(VI). The highest monolayer estimated adsorption capacities were 23.98, 25.19 and 24.27 mg/g at 5, 22 and 35 °C, respectively. Experimental data showed good compliance with pseudo-second-order kinetic model. The results of continuous column studies showed that the column removal efficiency increased from 52.33 to 57.58% by increasing the adsorbent dose from 0.125 to 0.200 g. Desorption efficiency of Cr(VI) by 0.1 M NaOH was increased from 51.16 to 59.41% by sonication bath as compared to roller shaker. More than 97% of desorbed Cr(VI) was recovered in less than 10 min by BaCl. This study shows that non-living microalga materials are more effective than living cells in the removal and recovery of Cr(VI) from water.
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daneshvar2019hexavalentbioresource Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Daneshvar, Ehsan;Zarrinmehr, Mohammad Javad;Kousha, Masoud;Hashtjin, Atefeh Malekzadeh;Saratale, Ganesh Dattatraya;Maiti, Abhijit;Vithanage, Meththika;Bhatnagar, Amit;
Journal Bioresource technology
Year 2019
DOI
S0960-8524(19)31294-5
URL
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