Assessment of microalga biofilms for simultaneous remediation and biofuel generation in mine tailings water

Palma, H., Killoran, E., Sheehan, M., Berner, F., and Heimann, K. (2017) Assessment of microalga biofilms for simultaneous remediation and biofuel generation in mine tailings water. Bioresource Technology, 234. pp. 327-335.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1016/j.biortech.201...
 
3


Abstract

Microalgae crops can generate a biochemical profile of high energy density and may be used for remediation of contaminated waste waters. This manuscript presents a laboratory-scale investigation into the potential for growing endemic microalgae biofilms in phosphorus-enriched nickel refinery tailings water, with an emphasis on product potential and the remediation of heavy metals. The dominant species of the consortia was a Chlorella-like microalga. The growth was monitored over time, with a productivity (0.77 ± 0.07 g AFDW.m−2.day−1) showing promising potential. The biochemical profile of biomass had a high total carbohydrate yield (40.0%), and a potential for increased lipid yields (6.7–19.5%). Biofilms showed a significant potential for the removal of heavy metals (Ni, Co, Mn, Sr) from the waste water with 24.8%, 10.5%, 24.8% and 26.4% reduction in Ni, Co, Mn and Sr, respectively. Results highlight significant potential for large-scale biofilm biomass production using metal-laden nickel refinery waste waters.

Item ID: 48151
Item Type: Article (Refereed Research - C1)
Keywords: microalgae; water treatment; metal absorption; biofilm; biofuel
ISSN: 1873-2976
Funders: James Cook University (JCU)
Projects and Grants: JCU Small Project Partnership Grant
Date Deposited: 03 Apr 2017 01:39
FoR Codes: 10 TECHNOLOGY > 1002 Environmental Biotechnology > 100203 Bioremediation @ 50%
10 TECHNOLOGY > 1003 Industrial Biotechnology > 100302 Bioprocessing, Bioproduction and Bioproducts @ 40%
10 TECHNOLOGY > 1003 Industrial Biotechnology > 100305 Industrial Microbiology (incl Biofeedstocks) @ 10%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8498 Environmentally Sustainable Mineral Resource Activities > 849805 Management of Water Consumption by Mineral Resource Activities @ 50%
85 ENERGY > 8505 Renewable Energy > 850501 Biofuel (Biomass) Energy @ 50%
Downloads: Total: 3
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page