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Characterization of algal and microbial community dynamics in a wastewater photo-bioreactor using indigenous algae from lake mälaren
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (ACWA)ORCID iD: 0000-0002-4435-4367
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (ACWA)ORCID iD: 0000-0003-3311-9465
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (ACWA)ORCID iD: 0000-0001-5480-0167
Indian Institute of Technology, Bombay, India..ORCID iD: 0000-0001-8857-4903
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2014 (English)Conference paper, Abstract (Other academic)
Abstract [en]

Microalgae grown in photo-bioreactors can be a valuable source for biomass especially when combined with the treatment of wastewater. While most published research has been studying pure cultures, consortia of algae and bacteria from the wastewater have more complex dynamics affecting both the biomass production and pollutant removal. In this paper we investigate dynamics of algal and bacterial communities in mixed culture photo-bioreactors using chlorophyll and real-time PCR analysis. Wastewater photo-bioreactors were inoculated with water from a nearby lake to add native algae species. The results indicated a decline in bacterial 16S rDNA copy numbers before algae started to multiply. The photo-bioreactors inoculated with lake algae produced more biomass and grew faster than the algae originating only from wastewater. The reactors were effective in removing ammonia from the wastewater which seemed work to mostly through nitrification thus causing an increase in nitrate concentration. There was also an increase in Cr, Co and Ni ion concentrations during the experiment suggesting they may have moved from organic complexes to the water phase as free ions.

Place, publisher, year, edition, pages
2014.
Keyword [en]
algae cultivation; biomass production; community analysis; photo-bioreactors; wastewater treatment
National Category
Water Treatment
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-26824OAI: oai:DiVA.org:mdh-26824DiVA: diva2:768173
Conference
4th International Conference on Algal Biomass Biofuels and Bioproducts
Funder
Knowledge FoundationVINNOVA
Available from: 2014-12-03 Created: 2014-12-03 Last updated: 2017-03-09Bibliographically approved

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Krustok, IvoNehrenheim, EmmaOdlare, MonicaM.A., ShabiimamTruu, Jaak
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CiteExportLink to record
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Citation style
  • apa
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