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A state-of-the-art review on spent coffee ground (SCG) pyrolysis for future biorefinery
Chemosphere ( IF 8.8 ) Pub Date : 2021-07-30 , DOI: 10.1016/j.chemosphere.2021.131730
A E Atabani 1 , Imtiaz Ali 2 , Salman Raza Naqvi 3 , Irfan Anjum Badruddin 4 , Muhammad Aslam 5 , Eyas Mahmoud 6 , Fares Almomani 7 , Dagmar Juchelková 8 , M R Atelge 9 , T M Yunus Khan 4
Affiliation  

Coffee is a globally consumed beverage that produces a substantial amount of valuable organic waste known as spent coffee grounds (SCG). Although SCG is a non-edible biomass, research initiatives focused on valorizing/utilizing its organic content, protecting the environment, and reducing the high oxygen demand required for its natural degradation. The integration with biorefinery in general and with pyrolysis process in specific is considerered the most successful solid waste management strategy of SCG that produce energy and high-value products. This paper aims at providing a quantitative analysis and discussion of research work done over the last 20 years on SCG as a feedstock in the circular bioeconomy (CBE). Management stratigies of SCG have been thoroughly reviewed and pyrolysis process has been explored as a novel technology in CBE. Results revealed that explored articles belong to Chemical, physical., biological and environmental science branches, with Energy & Fuels as the most reporting themes. Published works correlate SCG to renewable energy, biofuel, and bio-oil, with pyrolysis as a potential valorization approach. Literature review showed that only one study focused on the pyrolysis of defatted spent coffee grounds (DSCG). The insightful conclusions of this paper could assist in proposing several paths to more economically valorization of SCG through biorefinery, where extracted oil can be converted to biofuels or value-added goods. It was highlighted the importance of focusing on the coupling of SCG with CBE as solid waste managment strategy.



中文翻译:

用于未来生物精炼厂的废咖啡渣 (SCG) 热解技术的最新进展

咖啡是一种全球消费的饮料,会产生大量有价值的有机废物,称为废咖啡渣 (SCG)。尽管 SCG 是一种不可食用的生物质,但研究计划的重点是评估/利用其有机成分、保护环境以及减少其自然降解所需的高氧需求。总体上与生物精炼厂以及具体与热解过程的集成被认为是 SCG 生产能源和高价值产品的最成功的固体废物管理策略。本文旨在对过去 20 年来关于 SCG 作为循环生物经济 (CBE) 的原料的研究工作进行定量分析和讨论。对 SCG 的管理策略进行了彻底审查,并将热解过程作为 CBE 中的一项新技术进行了探索。结果显示,探索的文章属于化学、物理、生物和环境科学分支,其中能源与燃料是报道最多的主题。已发表的作品将 SCG 与可再生能源、生物燃料和生物油相关联,其中热解是一种潜在的增值方法。文献回顾表明,只有一项研究关注脱脂废咖啡渣 (DSCG) 的热解。本文的富有洞察力的结论可以帮助提出通过生物炼制更经济地实现 SCG 增值的几种途径,其中提取的石油可以转化为生物燃料或增值商品。强调了将 SCG 与 CBE 结合作为固体废物管理战略的重要性。以能源与燃料为报道最多的主题。已发表的作品将 SCG 与可再生能源、生物燃料和生物油相关联,其中热解是一种潜在的增值方法。文献回顾表明,只有一项研究关注脱脂废咖啡渣 (DSCG) 的热解。本文的富有洞察力的结论可以帮助提出通过生物炼制更经济地实现 SCG 增值的几种途径,其中提取的石油可以转化为生物燃料或增值商品。强调了将 SCG 与 CBE 结合作为固体废物管理战略的重要性。以能源与燃料为报道最多的主题。已发表的作品将 SCG 与可再生能源、生物燃料和生物油相关联,其中热解是一种潜在的增值方法。文献回顾表明,只有一项研究关注脱脂废咖啡渣 (DSCG) 的热解。本文的富有洞察力的结论可以帮助提出通过生物炼制更经济地实现 SCG 增值的几种途径,其中提取的石油可以转化为生物燃料或增值商品。强调了将 SCG 与 CBE 结合作为固体废物管理战略的重要性。文献回顾表明,只有一项研究关注脱脂废咖啡渣 (DSCG) 的热解。本文的富有洞察力的结论可以帮助提出通过生物炼制更经济地实现 SCG 增值的几种途径,其中提取的石油可以转化为生物燃料或增值商品。强调了将 SCG 与 CBE 结合作为固体废物管理战略的重要性。文献回顾表明,只有一项研究关注脱脂废咖啡渣 (DSCG) 的热解。本文的富有洞察力的结论可以帮助提出通过生物炼制更经济地实现 SCG 增值的几种途径,其中提取的石油可以转化为生物燃料或增值商品。强调了将 SCG 与 CBE 结合作为固体废物管理战略的重要性。

更新日期:2021-08-05
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