标题: Shell-derived chitosan as a green flocculant to harvest microalgae for biofuel production

作者: Yin, ZH (Yin, Zhihong); Hu, D (Hu, Dan); Li, XZ (Li, Xinzhu); Zhong, YN (Zhong, Yueni); Zhu, LD (Zhu, Liandong)

来源出版物: BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR DOI: 10.1002/bbb.2197 提前访问日期: FEB 2021

摘要: Microalgae are considered to be the feedstock for third-generation biofuels but there are still no commercial applications of microalgae biomass. This is due to the costly harvesting process, resulting from their specific characteristics such as small cell sizes, negatively charged surfaces, and stable dispersion in culture broths. Chitosan derived from crustacean shells, as a highly efficient and non-toxic flocculant for the harvesting of microalgae, can simultaneously achieve value-added recycling of shell wastes and efficient flocculation of microalgal biomass. Shell-derived chitosan is a biopolymer with a high economic value, which might promote shell waste resource utilization. Its application for microalgae harvesting also has no effect on the downstream process for biodiesel production. More than 90% of microalgal biomass can be harvested under certain conditions using chitosan as the flocculant, demonstrating a strong potential for practical application in future. The application of chitosan to flocculate microalgae still has some limitations, and efforts should be made regarding the enhancement of cost-effectiveness, improvement of harvesting processes, scalability of practical application, and implementation of supporting policies. The contribution of this study lies in the combination of chitosan production from crustacean shell wastes and its application in microalgae harvesting, which can realize the value-added recycling of shell wastes and efficient flocculation of microalgal biomass. (c) 2021 Society of Industrial Chemistry and John Wiley & Sons Ltd

入藏号: WOS:000616075300001

语言: English

文献类型: Article; Early Access

作者关键词: shell; chitosan; microalgae harvesting; flocculation; biofuel production

地址: [Yin, Zhihong; Hu, Dan; Li, Xinzhu; Zhong, Yueni; Zhu, Liandong] Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm B, Wuhan, Peoples R China.

[Yin, Zhihong; Hu, Dan; Li, Xinzhu; Zhong, Yueni; Zhu, Liandong] Wuhan Univ, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan, Peoples R China.

[Zhu, Liandong] Univ Vaasa, Fac Technol, POB 700, FI-65101 Vaasa, Finland.

[Zhu, Liandong] Univ Vaasa, Vaasa Energy Inst, POB 700, FI-65101 Vaasa, Finland.

通讯作者地址: Zhu, LD (通讯作者)，Univ Vaasa, Fac Technol, POB 700, FI-65101 Vaasa, Finland.

Zhu, LD (通讯作者)，Univ Vaasa, Vaasa Energy Inst, POB 700, FI-65101 Vaasa, Finland.

电子邮件地址: liandongzhu@gmail.com

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