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Title 

Polypropylene bundle attached multilayered Stigeoclonium biofilms cultivated in untreated sewage generate high biomass and lipid productivity

Authors 

Byung-Hyuk KimDong-Ho KimJung-Woon ChoiZ KangDae Hyun ChoJi Young KimHee-Mock OhHee-Sik Kim

Publisher 

The Korean Society for Applied Microbiology

Issue Date 

2015

Citation 

Journal of Microbiology and Biotechnology, vol. 25, no. 9, pp. 1547-1554

Keywords 

AlgaeAttachment materialBiofilmMultilayered cultureMunicipal wastewaterStigeoclonium sp.

Abstract 

The potential of microalgae biofuel has not been realized because of the low productivity and high costs associated with the current cultivation systems. In this study, a new low-cost and transparent attachment material was tested for cultivation of a filamentous algal strain, Stigeoclonium sp., isolated from wastewater. Initially, the different materials tested for Stigeoclonium cultivation in untreated wastewater were nylon mesh, polyethylene mesh, polypropylene bundle (PB), polycarbonate plate, and viscose rayon. Among the materials tested, PB led to a firm attachment, high biomass (53.22 g/m2, dry cell weight), and total lipid yield (5.8 g/m2) with no perceivable change in FAME profile. The Stigeoclonium-dominated biofilm consisted of bacteria and extracellular polysaccharide, which helped in biofilm formation and for effective wastewater treatment (viz., removal efficiency of total nitrogen and total phosphorus corresponded to ~38% and ~90%, respectively). PB also demonstrated high yields under multilayered cultivation in a single reactor treating wastewater. Hence, this system has several advantages over traditional suspended and attached systems, with possibility of increasing areal productivity three times using Stigeoclonium sp. Therefore, multilayered attached growth algal cultivation systems seem to be the future cultivation model for large-scale biodiesel production and wastewater treatment.

ISSN 

1017-7825

Link 

http://dx.doi.org/10.4014/jmb.1501.01033

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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