title: Blending water- and nutrient-source wastewaters for cost-effective cultivation of high lipid content microalgal species Micractinium inermum NLP-F014.
abstract: The possibility of utilizing blended wastewaters from different streams was investigated for cost-efficient microalgal cultivation. The influent of a domestic wastewater treatment plant and the liquid fertilizer from a swine wastewater treatment plant were selected as water- and nutrient-source wastewaters, respectively. The growth of Micractinium inermum NLP-F014 in the blended wastewater medium without any pretreatment was comparable to that in Bold's Basal Medium. The optimum blending ratio of 5-15% (vv(-1)) facilitated biomass production up to 5.7 g-dry cell weight (DCW) L(-1), and the maximum biomass productivity (1.03 g-DCWL(-1)d(-1)) was achieved after three days of cultivation. Nutrient depletion induced lipid accumulation in the cell up to 39.1% (ww(-1)) and the maximum lipid productivity was 0.19 g-FAMEL(-1)d(-1). These results suggest that blending water- and nutrient-source wastewaters at a proper ratio without pretreatment can significantly cut costs in microalgae cultivation for biodiesel production.
authors.affiliation: Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea.
authors.forename: Seonghwan
authors.initials: S
authors.lastname: Park
authors.affiliation: Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea.
authors.forename: Jeongmi
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea.
authors.forename: Youngjin
authors.initials: Y
authors.lastname: Yoon
authors.affiliation: Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea.
authors.forename: Younghyun
authors.initials: Y
authors.lastname: Park
authors.affiliation: Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea. Electronic address: leeth55@pusan.ac.kr.
authors.forename: Taeho
authors.initials: T
authors.lastname: Lee
mesh_terms: D000383:Agriculture; D056804:Biofuels; D018533:Biomass; D000460:Chlorophyta / Q000254:growth & development*; D003362:Cost-Benefit Analysis; D005502:Food; D008055:Lipids / Q000096:biosynthesis*; D058086:Microalgae / Q000254:growth & development*; D062065:Wastewater / Q000382:microbiology*; D014867:Water
chemical_list: D056804:Biofuels; D008055:Lipids; D062065:Wastewater; D014867:Water
keywords: Biofuel; Biomass; Lipid productivity; Microalgal cultivation; Wastewater treatment