Bioremediation of a complex industrial effluent by biosorbents derived from freshwater macroalgae

Kidgell, Joel T., de Nys, Rocky, Hu, Yi, Paul, Nicholas A., and Roberts, David A. (2014) Bioremediation of a complex industrial effluent by biosorbents derived from freshwater macroalgae. PLoS ONE, 9 (6). e94706. pp. 1-9.

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Biosorption with macroalgae is a promising technology for the bioremediation of industrial effluents. However, the vast majority of research has been conducted on simple mock effluents with little data available on the performance of biosorbents in complex effluents. Here we evaluate the efficacy of dried biomass, biochar, and Fe-treated biomass and biochar to remediate 21 elements from a real-world industrial effluent from a coal-fired power station. The biosorbents were produced from the freshwater macroalga Oedogonium sp. (Chlorophyta) that is native to the industrial site from which the effluent was sourced, and which has been intensively cultivated to provide a feed stock for biosorbents. The effect of pH and exposure time on sorption was also assessed. These biosorbents showed specificity for different suites of elements, primarily differentiated by ionic charge. Overall, biochar and Fe-biochar were more successful biosorbents than their biomass counterparts. Fe-biochar adsorbed metalloids (As, Mo, and Se) at rates independent of effluent pH, while untreated biochar removed metals (Al, Cd, Ni and Zn) at rates dependent on pH. This study demonstrates that the biomass of Oedogonium is an effective substrate for the production of biosorbents to remediate both metals and metalloids from a complex industrial effluent.

Item ID: 33644
Item Type: Article (Research - C1)
ISSN: 1932-6203
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© 2014 Kidgell et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Funders: Advanced Manufacturing Cooperative Research Centre (AMCRC), Australian Government's Cooperative Research Centre Scheme, Australian Renewable Energy Agency (ARENA), MBD Energy Research and Development program for Biological Carbon Capture and Storage
Date Deposited: 19 Jun 2014 00:39
FoR Codes: 10 TECHNOLOGY > 1002 Environmental Biotechnology > 100203 Bioremediation @ 100%
SEO Codes: 96 ENVIRONMENT > 9609 Land and Water Management > 960908 Mining Land and Water Management @ 100%
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