Biomass Conversion and Biorefinery ( IF 3.5 ) Pub Date : 2021-07-14 , DOI: 10.1007/s13399-021-01731-3 Felix Offei 1 , Lilian D. Koranteng 1 , Francis Kemausuor 2, 3
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Rice husk is an important component often ignored in the rice production chain. Despite its considerable ethanol recovery potential, commercialization is still lacking due to high pretreatment costs and waste generation. This study therefore explored the potential of maximising bioenergy recovery from rice husk using the integrated biorefinery approach while evaluating its role in partially offsetting the current regional transportation and wood fuel demand in Ghana. A resource modelling approach was employed to examine the impact of sequential bioethanol and briquette production from rice husk on gasoline and charcoal demand, respectively, for various fuel policy scenarios. The Oti region in Ghana has the capacity to offset their entire gasoline demand with bioethanol from rice husk for a 25% gasoline replacement policy (Et25) as well as offset their entire charcoal demand with briquettes for a 5% charcoal replacement policy (Bq5). Liquid Hot Water and Steam Explosion pretreatments were most favourable for higher bioethanol and briquette yields, respectively. The Volta region could recover the most bioenergy from rice husk among all regions at 11,110 toe using integrated biorefineries, representing 56% and 43.6% gain over separate briquettes and bioethanol production, respectively. Overall, rice husk biorefineries could provide high contributions to energy adequacy and significant reductions in charcoal production.
Graphical abstract
中文翻译：
从稻壳中综合生物乙醇和煤球回收：生物精炼分析
稻壳是水稻生产链中经常被忽视的重要组成部分。尽管乙醇回收潜力巨大，但由于高昂的预处理成本和废物产生，仍然缺乏商业化。因此，本研究探讨了使用综合生物精炼方法最大限度地从稻壳中回收生物能源的潜力，同时评估其在部分抵消加纳当前区域运输和木材燃料需求方面的作用。在各种燃料政策情景下，采用资源建模方法来研究连续生物乙醇和稻壳生产煤球对汽油和木炭需求的影响。加纳的 Oti 地区有能力通过 25% 的汽油替代政策 (Et25) 用稻壳中的生物乙醇来抵消他们的全部汽油需求，并有能力通过 5% 的木炭替代政策 (Bq5) 来抵消他们的全部木炭需求。液体热水和蒸汽爆炸预处理分别最有利于提高生物乙醇和煤球的产量。沃尔特地区可以使用综合生物精炼厂从所有地区中的 11,110 英尺稻壳中回收最多的生物能源，分别比单独的煤球和生物乙醇生产提高 56% 和 43.6%。总体而言，稻壳生物精炼厂可以为能源充足和木炭产量的显着减少做出巨大贡献。液体热水和蒸汽爆炸预处理分别最有利于提高生物乙醇和煤球的产量。沃尔特地区可以使用综合生物精炼厂从所有地区中的 11,110 脚趾中从稻壳中回收最多的生物能源，分别比单独的煤球和生物乙醇生产提高 56% 和 43.6%。总体而言，稻壳生物精炼厂可以为能源充足和木炭产量的显着减少做出巨大贡献。液体热水和蒸汽爆炸预处理分别最有利于提高生物乙醇和煤球的产量。沃尔特地区可以使用综合生物精炼厂从所有地区中的 11,110 英尺稻壳中回收最多的生物能源，分别比单独的煤球和生物乙醇生产提高 56% 和 43.6%。总体而言，稻壳生物精炼厂可以为能源充足和木炭产量的显着减少做出巨大贡献。
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