He P.J.Mao B.Shen C.M.Shao L.M.Lee D.J.Chang J.S.2019-05-142019-05-14201309608524https://scholars.lib.ntu.edu.tw/handle/123456789/408244The feasibility of cultivating Chlorella vulgaris with wastewater containing high ammonia nitrogen concentrations was examined. The average specific growth rate of C. vulgaris was 0.92d-1 at 17mgL-1 NH4 +-N, but declined to 0.33d-1 at NH4 +-N concentrations of 39-143mgL-1. At 39mgL-1 NH4 +-N, lipid productivity reached a maximum value (23.3mgL-1d-1) and dropped sharply at higher NH4 +-N levels, which demonstrated NH4 +-N should be controlled for biodiesel production. C16 and C18 fatty acids accounted for 80% of total fatty acids. Increasing NH4 +-N from 17 to 207mgL-1 yielded additional short-chain and saturated fatty acids. Protein content was in positive correlation with NH4 +-N content from 17mgL-1 (12%) to 207mgL-1 (42%). Carbohydrate in the dried algae cell was in the range of 14-45%, with a peak value occurring at 143mgL-1 NH4 +-N. The results demonstrate that product quality can be manipulated by NH4 +-N concentrations of the initial feeds. ? 2012 Elsevier Ltd.AmmoniaBiodiesel productionChlorella vulgarisFatty acidsWastewater treatment[SDGs]SDG6journal article10.1016/j.biortech.2012.10.1622-s2.0-84870861421https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870861421&doi=10.1016%2fj.biortech.2012.10.162&partnerID=40&md5=199bb58a8e44ee5e3e815f6096dfacec