Utilizing cocoa bean husk residues from supercritical extraction for biofuel production through hydrothermal liquefaction

被引：5

作者：

Lee, Seung Eun ^{[1
,2
]}

Lim, Ji Sun ^{[1
,3
]}

Park, Young-Kwon ^{[2
]}

Shong, Bonggeun ^{[3
]}

Lee, Hong-shik ^{[1
]}

机构：

[1] Korea Inst Ind Technol, 89 Yangdaegiro-gil,Seobuk-gu, Cheonan Si 31056, South Korea

[2] Univ Seoul, Sch Environm Engn, 163 Seoulsiripdae-ro, Seoul 02504, South Korea

[3] Hongik Univ, Dept Chem Engn, Wausan ro 94, Seoul 04066, South Korea

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2025年 / 215卷

关键词：

Supercritical fluid extraction; Residual biomass; Biofuel; Hydrothermal liquefaction; Co-solvents; Total energy recovery; BIOMASS;

D O I：

10.1016/j.supflu.2024.106416

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study aimed to develop an efficient method for converting residual biomass into biofuel through a process that combines supercritical fluid extraction and hydrothermal liquefaction. The study analyzed the compositional changes in the biomass residues using various co-solvents and assessed their potential for biofuel production. After hydrothermal liquefaction, the liquid biofuel produced showed a decrease in the H to C ratio from 1.7 to 1.6 and a reduction in the O to C ratio from 0.5 to 0.2, compared to the unprocessed feedstock, indicating a favorable alteration in elemental composition for biofuel production. Notably, residues extracted with supercritical CO2 and ethanol had the lowest yield, while those extracted with CO2 and water achieved the highest energy recovery at 101.5 %. These findings suggest that integrating supercritical fluid extraction with hydrothermal liquefaction is an environmentally sustainable and efficient approach, significantly advancing the development of sustainable biofuels.

引用

页数：9

共 48 条

[1] Optimisation and economic evaluation of the supercritical carbon dioxide extraction of waxes from waste date palm (Phoenix dactylifera) leaves [J].