title: Effective harvesting of the microalgae Chlorella vulgaris via flocculation-flotation with bioflocculant.
abstract: In this study, bioflocculant from Cobetia marina L03 could be used for effective harvesting of the microalgae Chlorella vulgaris via flocculation-flotation. A flotation efficiency of 92.7% was observed when 20 mg L(-1) bioflocculant was tested for flocculating the microalgal cells with 5mM CaCl2. The bioflocculant was stable at wide ranges of pH and temperature, which is advantageous for its application under various conditions. Chemical analysis of the bioflocculant indicated that it is composed of 31.6% total sugar and 0.2% protein (w/w). This bioflocculant has potential for the high-efficiency harvesting of microalgae and may be useful in reducing one of the barriers to microalgal biofuel production.
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China.
authors.forename: Xueqian
authors.initials: X
authors.lastname: Lei
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, SOA; Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen 361005, China.
authors.forename: Zongze
authors.initials: Z
authors.lastname: Shao
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China.
authors.forename: Zhangran
authors.initials: Z
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China.
authors.forename: Jingyan
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Tsinghua University, 100084 Beijing, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zheng
authors.affiliation: State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China. Electronic address: wshwzh@xmu.edu.cn.
authors.forename: Tianling
authors.initials: T
authors.lastname: Zheng
mesh_terms: D048408:Chlorella vulgaris / Q000302:isolation & purification*; D005427:Flocculation; D006863:Hydrogen-Ion Concentration; D058086:Microalgae / Q000302:isolation & purification*; D013696:Temperature
keywords: Bioflocculant; Chlorella vulgaris; Cobetia marina; Flocculation–flotation; Microalgae harvesting