Potential, economic and ecological benefits of sweet sorghum bio-industry in China

IF 6.1 1区 工程技术 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Biotechnology for Biofuels Pub Date : 2024-11-08 DOI:10.1186/s13068-024-02582-6
Ru Zhang, Gang Lin, Li Shang, Xiaoyuan Wu, Zhiquan Liu, Longchao Xu, Qinglin Sun, Jingying Fu, Huaiqing Hao, Hai-Chun Jing
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Abstract

Background

Sweet sorghum (Sorghum bicolor) displays an excellent potential to serve as a non-food bioenergy feedstock for bioethanol production in China due to its high potential yield on marginal lands. However, few studies have been conducted on the potential of sweet sorghum yield and appropriate industrial models in different marginal regions in China. This study explored the spatial distribution of potential sweet sorghum production using the Decision Support System for Agrotechnology Transfer (DSSAT) model and proposed three typical industrial models of sweet sorghum industry to calculate their economic and ecological benefits.

Results

The results indicate that considering the factors of land use, annual precipitation, soil salinity, soil pH, and accumulated temperature, approximately 32.23 million ha of marginal land are suitable for sweet sorghum cultivation in China, and 130 million tonnes (t) of ethanol can be produced. Further, the development of the sweet sorghum industry under the three models can generate 1425.49 billion CNY potential, approximately accounting for 3.57% of industrial added value in China if measured against 2023 levels, and reduce CO2 emissions by 4.68 million t.

Conclusions

This study provides an innovative perspective for the multi-industry large-scale promotion of sweet sorghum in different marginal lands based on the high spatial resolution Geographic Information System (GIS) data by the DSSAT model with a Life Cycle Assessment (LCA) method, and this applies not only to China but also to the worldwide and other types of energy plants.

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中国甜高粱生物产业的潜力、经济和生态效益
背景甜高粱(Sorghum bicolor)因其在贫瘠土地上的高产潜力,极有可能成为中国生物乙醇生产的非粮生物能源原料。然而,有关中国不同边缘地区甜高粱产量潜力和适宜产业模式的研究却很少。结果表明,综合考虑土地利用、年降水量、土壤盐碱度、土壤 pH 值和积温等因素,中国约有 3223 万公顷边缘土地适宜种植甜高粱,可生产乙醇 1.3 亿吨。此外,在三种模式下发展甜高粱产业可产生 14254.9 亿元人民币的潜力,若以 2023 年的水平衡量,约占中国工业增加值的 3.57%,并可减少 468 万吨二氧化碳排放。结论 本研究基于 DSSAT 模型的高空间分辨率地理信息系统(GIS)数据,采用生命周期评估 (LCA)方法,为在不同贫瘠土地上大规模推广多产业甜高粱提供了创新视角,不仅适用于中 国,也适用于全球和其他类型的能源工厂。
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来源期刊
Biotechnology for Biofuels
Biotechnology for Biofuels 工程技术-生物工程与应用微生物
自引率
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审稿时长
2.7 months
期刊介绍: Biotechnology for Biofuels is an open access peer-reviewed journal featuring high-quality studies describing technological and operational advances in the production of biofuels, chemicals and other bioproducts. The journal emphasizes understanding and advancing the application of biotechnology and synergistic operations to improve plants and biological conversion systems for the biological production of these products from biomass, intermediates derived from biomass, or CO2, as well as upstream or downstream operations that are integral to biological conversion of biomass. Biotechnology for Biofuels focuses on the following areas: • Development of terrestrial plant feedstocks • Development of algal feedstocks • Biomass pretreatment, fractionation and extraction for biological conversion • Enzyme engineering, production and analysis • Bacterial genetics, physiology and metabolic engineering • Fungal/yeast genetics, physiology and metabolic engineering • Fermentation, biocatalytic conversion and reaction dynamics • Biological production of chemicals and bioproducts from biomass • Anaerobic digestion, biohydrogen and bioelectricity • Bioprocess integration, techno-economic analysis, modelling and policy • Life cycle assessment and environmental impact analysis
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