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

作者：Palma H; Killoran E; Sheehan M; Berner F; Heimann K

来源：Bioresource Technology, 2017, 234: 327-335.

DOI：10.1016/j.biortech.2017.03.063

• Microalgae
• Water treatment
• Metal absorption
• Biofilm
• Biofuel

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.

• 出版日期2017-6