Production of chemicals and utilities in-house improves the environmental sustainability of phytoplankton-based biorefinery

文献类型： 外文期刊

第一作者： Kiehbadroudinezhad, Mohammadali

作者： Kiehbadroudinezhad, Mohammadali;Liu, Dan;Kiehbadroudinezhad, Mohammadali;Hosseinzadeh-Bandbafha, Homa;Karimi, Keikhosro;Karimi, Keikhosro;Madadi, Meysam;Chisti, Yusuf;Tabatabaei, Meisam;Peng, Wanxi;Tabatabaei, Meisam;Aghbashlo, Mortaza

作者机构：

关键词： Phytoplankton biorefinery; Algal biofuels; Environmental impact; Life cycle analysis; Cumulative exergy demand; Sustainability

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）

ISSN： 0048-9697

年卷期： 2023 年 899 卷

页码：

收录情况： SCI

摘要： Life cycle assessment was used to evaluate the environmental impacts of phytoplanktonic biofuels as possible sustainable alternatives to fossil fuels. Three scenarios were examined for converting planktonic biomass into higher-value commodities and energy streams using the alga Scenedesmus sp. and the cyanobacterium Arthrospira sp. as the species of interest. The first scenario (Sc-1) involved the production of biodiesel and glycerol from the planktonic biomass. In the second scenario (Sc-2), biodiesel and glycerol were generated from the planktonic biomass, and biogas was produced from the residual biomass. The process also involved using a catalyst derived from snail shells for biodiesel production. The third scenario (Sc-3) was similar to Sc-2 but converted CO2 from the biogas upgrading to methanol, which was then used in synthesizing biodiesel. The results indicated that Sc-2 and Sc-3 had a reduced potential (up to 60 % less) for damaging human health compared to Sc-1. Sc-2 and Sc-3 had up to 61 % less environmental impact than Sc-1. Sc-2 and Sc-3 reduced the total cumulative exergy demand by up to 44 % compared to Sc-1. In conclusion, producing chemicals and utilities within the biorefinery could significantly improve environmental sustainability, reduce waste, and diversify revenue streams.

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