Journal article
Biofilm establishment and heavy metal removal capacity of an indigenous mining algal-microbial consortium in a photo-rotating biological contactor
Journal of Industrial Microbiology & Biotechnology, Vol.39(9), pp.1321-1331
2012
Abstract
An indigenous mining algal-microbial consortium was immobilised within a laboratory-scale photo-rotating biological contactor (PRBC) that was used to investigate the potential for heavy metal removal from acid mine drainage (AMD). The microbial consortium, dominated by Ulothrix sp., was collected from the AMD at the Sar Cheshmeh copper mine in Iran. This paper discusses the parameters required to establish an algal-microbial biofilm used for heavy metal removal, including nutrient requirements and rotational speed. The PRBC was tested using synthesised AMD with the multi-ion and acidic composition of wastewater (containing 18 elements, and with a pH of 3.5 +/- A 0.5), from which the microbial consortium was collected. The biofilm was successfully developed on the PRBC's disc consortium over 60 days of batch-mode operation. The PRBC was then run continuously with a 24 h hydraulic residence time (HRT) over a ten-week period. Water analysis, performed on a weekly basis, demonstrated the ability of the algal-microbial biofilm to remove 20-50 % of the various metals in the order Cu > Ni > Mn > Zn > Sb > Se > Co > Al. These results clearly indicate the significant potential for indigenous AMD microorganisms to be exploited within a PRBC for AMD treatment.
Details
- Title
- Biofilm establishment and heavy metal removal capacity of an indigenous mining algal-microbial consortium in a photo-rotating biological contactor
- Authors/Creators
- S. Orandi (Author/Creator) - The University of AdelaideD.M. Lewis (Author/Creator) - The University of AdelaideN.R. Moheimani (Author/Creator) - Murdoch University
- Publication Details
- Journal of Industrial Microbiology & Biotechnology, Vol.39(9), pp.1321-1331
- Publisher
- Springer Verlag
- Identifiers
- 991005541225907891
- Copyright
- © Society for Industrial Microbiology and Biotechnology 2012
- Murdoch Affiliation
- Algae and Seagrass Research Group; School of Biological Sciences and Biotechnology
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.171 Photoproductivity
- 3.171.477 Microalgae Biotechnology
- Web Of Science research areas
- Biotechnology & Applied Microbiology
- ESI research areas
- Biology & Biochemistry