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Valorization of olive tree pruning. Application for energy storage and biofuel production
Industrial Crops and Products ( IF 5.6 ) Pub Date : 2021-10-05 , DOI: 10.1016/j.indcrop.2021.114082
Arminda Mamaní 1, 2 , Yolanda Maturano 2, 3 , Victoria Mestre 2, 3 , Laura Montoro 1, 2 , Liliana Gassa 2, 4 , Cristina Deiana 1 , Fabiana Sardella 1
Affiliation  

This work addresses the valorization and integral use of an abundant agro-industrial waste in sustainable production routes. Olive tree pruning residues were used to obtain bioethanol and activated carbon. This was latter applied to supercapacitor electrodes preparation and also as a detoxifying agent. On the bioethanol route, the residue was pretreated with lime, hydrolyzed and subsequently fermented with native yeasts. The maximum ethanol concentration was obtained by Candida sake BCs88 (3.3 g/l). Prior to fermentation, the liquor was detoxified with activated carbon, achieving removal percentages of inhibitor compounds of 89.2 %, 32.6 % and 91.8 % for polyphenols, hydroxymethylfurfural and furfural, respectively. Detoxification stage improved markedly the performance of all yeasts. KOH was used to obtain the activated carbon, reaching a BET surface of 4083 m2/g. It was applied as supercapacitor electrode generating a high specific capacitance of 264.38 F/g at a current density of 0.5 A/g, and delivering elevated values of energy density (17.83 Wh/kg) and power density (65 W/kg).



中文翻译:

橄榄树修剪的价值。能源储存和生物燃料生产的应用

这项工作解决了可持续生产路线中丰富的农业工业废物的价值化和综合利用问题。橄榄树修剪残留物用于获得生物乙醇和活性炭。这后来应用于超级电容器电极的制备,也用作解毒剂。在生物乙醇路线上,残留物用石灰预处理,水解,随后用天然酵母发酵。最大乙醇浓度由念珠菌获得BCs88(3.3 克/升)。发酵前,用活性炭对酒液进行脱毒,对多酚、羟甲基糠醛和糠醛的抑制剂化合物的去除率分别为89.2%、32.6%和91.8%。解毒阶段显着提高了所有酵母的性能。KOH用于获得活性炭,达到4083m 2 /g的BET表面。它被用作超级电容器电极,在 0.5 A/g 的电流密度下产生 264.38 F/g 的高比电容,并提供更高的能量密度 (17.83 Wh/kg) 和功率密度 (65 W/kg)。

更新日期:2021-10-06
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