The sequential application of macroalgal biosorbents for the bioremediation of a complex industrial effluent
Fe-treated biochar and raw biochar produced from macroalgae are effective biosorbents of metalloids and metals, respectively. However, the treatment of complex effluents that contain both metalloid and metal contaminants presents a challenging scenario. We test a multiple-biosorbent approach to bior...
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| Veröffentlicht in: | PloS one 2014-07, Vol.9 (7), p.e101309 |
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| description | Fe-treated biochar and raw biochar produced from macroalgae are effective biosorbents of metalloids and metals, respectively. However, the treatment of complex effluents that contain both metalloid and metal contaminants presents a challenging scenario. We test a multiple-biosorbent approach to bioremediation using Fe-biochar and biochar to remediate both metalloids and metals from the effluent from a coal-fired power station. First, a model was derived from published data for this effluent to predict the biosorption of 21 elements by Fe-biochar and biochar. The modelled outputs were then used to design biosorption experiments using Fe-biochar and biochar, both simultaneously and in sequence, to treat effluent containing multiple contaminants in excess of water quality criteria. The waste water was produced during ash disposal at an Australian coal-fired power station. The application of Fe-biochar and biochar, either simultaneously or sequentially, resulted in a more comprehensive remediation of metalloids and metals compared to either biosorbent used individually. The most effective treatment was the sequential use of Fe-biochar to remove metalloids from the waste water, followed by biochar to remove metals. Al, Cd, Cr, Cu, Mn, Ni, Pb, Zn were reduced to the lowest concentration following the sequential application of the two biosorbents, and their final concentrations were predicted by the model. Overall, 17 of the 21 elements measured were remediated to, or below, the concentrations that were predicted by the model. Both metalloids and metals can be remediated from complex effluent using biosorbents with different characteristics but derived from a single feedstock. Furthermore, the extent of remediation can be predicted for similar effluents using additive models. |
| doi_str_mv | 10.1371/journal.pone.0101309 |
| format | Article |
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However, the treatment of complex effluents that contain both metalloid and metal contaminants presents a challenging scenario. We test a multiple-biosorbent approach to bioremediation using Fe-biochar and biochar to remediate both metalloids and metals from the effluent from a coal-fired power station. First, a model was derived from published data for this effluent to predict the biosorption of 21 elements by Fe-biochar and biochar. The modelled outputs were then used to design biosorption experiments using Fe-biochar and biochar, both simultaneously and in sequence, to treat effluent containing multiple contaminants in excess of water quality criteria. The waste water was produced during ash disposal at an Australian coal-fired power station. The application of Fe-biochar and biochar, either simultaneously or sequentially, resulted in a more comprehensive remediation of metalloids and metals compared to either biosorbent used individually. The most effective treatment was the sequential use of Fe-biochar to remove metalloids from the waste water, followed by biochar to remove metals. Al, Cd, Cr, Cu, Mn, Ni, Pb, Zn were reduced to the lowest concentration following the sequential application of the two biosorbents, and their final concentrations were predicted by the model. Overall, 17 of the 21 elements measured were remediated to, or below, the concentrations that were predicted by the model. Both metalloids and metals can be remediated from complex effluent using biosorbents with different characteristics but derived from a single feedstock. Furthermore, the extent of remediation can be predicted for similar effluents using additive models.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0101309</identifier><identifier>PMID: 25061756</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Algae ; Aluminum ; Australia ; Australian coal ; Biodegradation, Environmental ; Biology ; Biology and Life Sciences ; Biomass ; Bioremediation ; Biosorption ; Biotechnology ; Cadmium ; Charcoal ; Charcoal - chemistry ; Chlorophyta ; Chromium ; Coal ; Coal - adverse effects ; Coal-fired power plants ; Contaminants ; Copper ; Data processing ; Effluent treatment ; Effluents ; Humans ; Industrial effluents ; Industrial Waste ; Industrial wastes ; Industrial wastewater ; Iron ; Lead ; Manganese ; Mathematical models ; Metalloids ; Metals ; Metals - chemistry ; Nickel ; Oedogonium ; Power plants ; Raw materials ; Remediation ; Seaweeds ; Waste disposal ; Wastewater ; Wastewater treatment ; Water Pollutants, Chemical - chemistry ; Water pollution ; Water Purification ; Water quality ; Water treatment ; Zinc</subject><ispartof>PloS one, 2014-07, Vol.9 (7), p.e101309</ispartof><rights>COPYRIGHT 2014 Public Library of Science</rights><rights>2014 Kidgell et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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However, the treatment of complex effluents that contain both metalloid and metal contaminants presents a challenging scenario. We test a multiple-biosorbent approach to bioremediation using Fe-biochar and biochar to remediate both metalloids and metals from the effluent from a coal-fired power station. First, a model was derived from published data for this effluent to predict the biosorption of 21 elements by Fe-biochar and biochar. The modelled outputs were then used to design biosorption experiments using Fe-biochar and biochar, both simultaneously and in sequence, to treat effluent containing multiple contaminants in excess of water quality criteria. The waste water was produced during ash disposal at an Australian coal-fired power station. The application of Fe-biochar and biochar, either simultaneously or sequentially, resulted in a more comprehensive remediation of metalloids and metals compared to either biosorbent used individually. The most effective treatment was the sequential use of Fe-biochar to remove metalloids from the waste water, followed by biochar to remove metals. Al, Cd, Cr, Cu, Mn, Ni, Pb, Zn were reduced to the lowest concentration following the sequential application of the two biosorbents, and their final concentrations were predicted by the model. Overall, 17 of the 21 elements measured were remediated to, or below, the concentrations that were predicted by the model. Both metalloids and metals can be remediated from complex effluent using biosorbents with different characteristics but derived from a single feedstock. Furthermore, the extent of remediation can be predicted for similar effluents using additive models.</description><subject>Algae</subject><subject>Aluminum</subject><subject>Australia</subject><subject>Australian coal</subject><subject>Biodegradation, Environmental</subject><subject>Biology</subject><subject>Biology and Life Sciences</subject><subject>Biomass</subject><subject>Bioremediation</subject><subject>Biosorption</subject><subject>Biotechnology</subject><subject>Cadmium</subject><subject>Charcoal</subject><subject>Charcoal - chemistry</subject><subject>Chlorophyta</subject><subject>Chromium</subject><subject>Coal</subject><subject>Coal - adverse effects</subject><subject>Coal-fired power plants</subject><subject>Contaminants</subject><subject>Copper</subject><subject>Data processing</subject><subject>Effluent treatment</subject><subject>Effluents</subject><subject>Humans</subject><subject>Industrial effluents</subject><subject>Industrial Waste</subject><subject>Industrial wastes</subject><subject>Industrial wastewater</subject><subject>Iron</subject><subject>Lead</subject><subject>Manganese</subject><subject>Mathematical models</subject><subject>Metalloids</subject><subject>Metals</subject><subject>Metals - 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However, the treatment of complex effluents that contain both metalloid and metal contaminants presents a challenging scenario. We test a multiple-biosorbent approach to bioremediation using Fe-biochar and biochar to remediate both metalloids and metals from the effluent from a coal-fired power station. First, a model was derived from published data for this effluent to predict the biosorption of 21 elements by Fe-biochar and biochar. The modelled outputs were then used to design biosorption experiments using Fe-biochar and biochar, both simultaneously and in sequence, to treat effluent containing multiple contaminants in excess of water quality criteria. The waste water was produced during ash disposal at an Australian coal-fired power station. The application of Fe-biochar and biochar, either simultaneously or sequentially, resulted in a more comprehensive remediation of metalloids and metals compared to either biosorbent used individually. The most effective treatment was the sequential use of Fe-biochar to remove metalloids from the waste water, followed by biochar to remove metals. Al, Cd, Cr, Cu, Mn, Ni, Pb, Zn were reduced to the lowest concentration following the sequential application of the two biosorbents, and their final concentrations were predicted by the model. Overall, 17 of the 21 elements measured were remediated to, or below, the concentrations that were predicted by the model. Both metalloids and metals can be remediated from complex effluent using biosorbents with different characteristics but derived from a single feedstock. Furthermore, the extent of remediation can be predicted for similar effluents using additive models.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25061756</pmid><doi>10.1371/journal.pone.0101309</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Algae Aluminum Australia Australian coal Biodegradation, Environmental Biology Biology and Life Sciences Biomass Bioremediation Biosorption Biotechnology Cadmium Charcoal Charcoal - chemistry Chlorophyta Chromium Coal Coal - adverse effects Coal-fired power plants Contaminants Copper Data processing Effluent treatment Effluents Humans Industrial effluents Industrial Waste Industrial wastes Industrial wastewater Iron Lead Manganese Mathematical models Metalloids Metals Metals - chemistry Nickel Oedogonium Power plants Raw materials Remediation Seaweeds Waste disposal Wastewater Wastewater treatment Water Pollutants, Chemical - chemistry Water pollution Water Purification Water quality Water treatment Zinc |
| title | The sequential application of macroalgal biosorbents for the bioremediation of a complex industrial effluent |
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