BioChem - DOS

NaCl as an effective inducer for lipid accumulation in freshwater microalgae Desmodesmus abundans

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Xia, L.; Rong, J.; Yang, H.; He, Q.; Zhang, D.; Hu, C.

In order to evaluate the efficiency and potential of salt addition-based two-stage cultivation technology, on the basis of urea as nitrogen source, we compared four types of salts (NaCl, NaHCO<SUB>3</SUB>, NaS<SUB>2</SUB>O<SUB>3</SUB> and NaAc) as inducers for lipid production in Desmodesmus abundans. The maximum biomass productivity (270.08mgL<SUP>-1</SUP>d<SUP>-1</SUP>) was obtained by using 0.25gL<SUP>-1</SUP> urea. The highest lipid productivity (67.08mgL<SUP>-1</SUP>d<SUP>-1</SUP>) and better biodiesel quality were realized by addition of 20gL<SUP>-1</SUP> NaCl, and the optimal time point for salt addition was determined at 1.79gL<SUP>-1</SUP> of biomass density. Further cost analysis demonstrated this cultivation process was relatively economical. Above results suggest that NaCl addition is an economical and applicable strategy for lipid enhancement and can be extended for microalgae-based biodiesel production.

2014

Elsevier Applied Science

0960-8524

161

pp.402-409

10.1016/j.biortech.2014.03.063

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART69045415

Desmodesmus abundans; NaCl; Lipid induction; Net energy ratio; Cost feasibility