Novel material-oriented valorization of biogas can achieve more carbon reduction than traditional utilization by bioelectricity or biomethane
文献类型： 外文期刊
作者： Guo, Jing 1 ; He, Pinjing 1 ; Wu, Hao 3 ; Xi, Yonglan 4 ; Li, Chao 1 ; Zhang, Hua 1 ; Zhou, Jun 3 ; Liao, Jingwen 3 ; Lue, Fan 1 ;
作者机构： 1.Tongji Univ, Inst Waste Treatment & Reclamat, 1239 Siping Rd, Shanghai 200092, Peoples R China
2.Tongji Univ, State Key Lab Pollut Control & Source Reuse, 1239 Siping Rd, Shanghai 200092, Peoples R China
3.Nanjing Tech Univ, Coll Biotechnol & Pharmaceut Engn, Nanjing 211800, Peoples R China
4.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China
关键词： Biogas upgrading; Biomethane; Climate change impact; Carbon sequestration; Biogas management
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.4； 五年影响因子：10.6 ）
ISSN： 0960-8524
年卷期： 2024 年 395 卷
页码：
收录情况： SCI
摘要： Two novel biogas upgrading strategies that recover high-value chemicals or CO2 liquid fertilizer from biogas besides biomethane were evaluated from the view of global warming potential (GWP) through life cycle assessment in comparison with conventional approaches. Results show that the scenarios producing biomethane with nano calcium carbonate or CO2 liquid fertilizer from biogas present significantly lower GWP (-3.4 kgCO2eq/Nm3-biogas and -4.4 kgCO2-eq/Nm3-biogas, respectively), compared to combined heat and power scenario (-2.4 kgCO2-eq/Nm3-biogas) and biogas upgrading by high pressure water scrubbing scenario (-1.3 kgCO2-eq/ Nm3-biogas). The carbon sequestration and utilization from CO2-rich water significantly enhanced carbon reduction in overall biogas management. Furthermore, considering cleaner electricity in the future, strategies focusing on managing biogas for materials will align more with climate change goals than energy-focused strategies. This study provides insight for decision-makers in developing roadmaps for carbon reduction pathways in biogas-relating sectors.
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