title: Optimizing cultivation strategies for robust algal growth and consequent removal of inorganic nutrients in pretreated livestock effluent.
abstract: Dilution was employed as a pretreatment strategy to increase light transmittance and decrease ammonia toxicity in piggery effluent prior to the cultivation of microalgae. The dilution effect was quantitatively determined based on both the maximum specific nutrient consumption rate and the maximum growth coefficient to minimize the usage of diluent. The biomass productivity of microalgae was also evaluated to select the best species among the five different candidates examined. A 20-fold dilution of piggery wastewater resulted in decreased chromaticity (584 mg Pt-Co L(-1)) and total nitrogen (76 mg L(-1)), on which the microalgae cultivation was more effective for an algal growth compared to the other dilution factors. If the initial cell concentration of Scenedesmus quadricauda increased, the production of biomass tended to improve. Robust growth and harvesting of S. quadricauda were achieved, and the associated consistent removal of inorganic nutrients was accomplished during the semi-continuous cultivation of the best species.
authors.affiliation: Water Resources Research Institute, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul, 143-747, South Korea.
authors.forename: Hyun-Chul
authors.initials: HC
authors.lastname: Kim
authors.affiliation: Center for Water Resources Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 136-791, South Korea.|Department of Civil and Environmental Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul, 120-749, South Korea.
authors.forename: Wook Jin
authors.initials: WJ
authors.lastname: Choi
authors.affiliation: Center for Water Resources Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 136-791, South Korea.
authors.forename: Jun Hee
authors.initials: JH
authors.lastname: Ryu
authors.affiliation: Department of Civil and Environmental Engineering, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul, 143-747, South Korea.
authors.forename: Sung Kyu
authors.initials: SK
authors.lastname: Maeng
authors.affiliation: ENR Solution Co. Ltd., 60-15 Gasan-dong, Keumcheon-gu, Seoul, 153-801, South Korea.
authors.forename: Han Soo
authors.initials: HS
authors.lastname: Kim
authors.affiliation: Department of Civil Engineering, Suncheon First College, San 9-3 Deogwol-dong, Suncheon-si, Jeollanam-do, 540-744, South Korea.
authors.forename: Byung-Chan
authors.initials: BC
authors.lastname: Lee
authors.affiliation: Center for Water Resources Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 136-791, South Korea. kgsong@kist.re.kr.
authors.forename: Kyung Guen
authors.initials: KG
authors.lastname: Song
mesh_terms: D000818:Animals; D058751:Livestock; D017744:Medical Waste Disposal / Q000379:methods*; D058086:Microalgae / Q000254:growth & development*; D044444:Scenedesmus / Q000254:growth & development*; D062065:Wastewater / Q000382:microbiology*; D018508:Water Purification
chemical_list: D017744:Medical Waste Disposal; D062065:Wastewater