Journal
BIORESOURCE TECHNOLOGY
Volume 305, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123072
Keywords
Microalgae; Real swine wastewater; Carbohydrate; Cell-displayed technology; Bioethanol
Funding
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [2019DX09]
- National Natural Science Foundation of China [51961165104]
- Project of Thousand Youth Talents, Beijing, China
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This work aimed to study an newly isolated microalgal strain, Chlamydomonas sp. QWY37, that can achieve a maximum carbohydrate production of 944 mg/L.d, along with high pollutant removal efficiencies (chemical oxygen demand: 81%, total nitrogen: 96%, total phosphate: nearly 100%) by optimizing culture conditions and using an appropriate operation strategy. Through a cell-displayed technology that utilizes combined engineered system, a maximum microalgal bioethanol yield of 61 g/L was achieved. This is the first report demonstrating the highest microalgal carbohydrate productivity using swine wastewater without any pretreatments associated with direct high-density bioethanol production from the subsequent microalgal biomass. This work may represent a breakthrough in achieving feasible microalgal bioethanol conversion from real swine wastewater.
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