CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China; Environmental Engineering Department, Middle East Technical University, Ankara 06800, Turkey.
CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China.
Bioresour Technol. 2021 Mar;323:124541. doi: 10.1016/j.biortech.2020.124541. Epub 2020 Dec 14.
Bioenergy is considered a sustainable substitute to fossil-fuel resources and the development of a prudent combination of renewable and innovative conversion technologies are essential for the valorization and effective conversion of biowaste to value-added commodities. Here, a negative pressure-induced carbonization process was proposed for the valorization of lignin-enriched biowaste precursor to bio-oil and environmental materials (biochar) at various temperatures. The high heating values (HHV) of the as-prepared biochars from the lignin enriched precursor under negative pressure (low-medium vacuum) were within 25.9-31.5 MJ/kg, which matched satisfactorily to the commercial charcoal. Whereas, the bio-oils produced from the lignin enriched precursor under vacuum conditions was a blend of complex aromatic and straight-chain hydro-carbons, including aldehyde, ketone, phenol, and furans, exhibiting ability as potential heating-oil with HHV within 21.2-28.2 MJ/kg. Moreover, the biochars produced under vacuum environments at higher temperature showed greater stability (22.5-35.9%) than those produced under N atmosphere.
生物能源被认为是化石燃料资源的可持续替代品，开发谨慎的可再生和创新转化技术组合对于生物废物的增值和有效转化为高附加值商品至关重要。在这里，提出了一种负压诱导碳化工艺，用于将富含木质素的生物废物前体增值为生物油和环境材料（生物炭），在不同温度下进行。在负压（低-中真空）下，由富含木质素的前体制备的生物炭的高热值（HHV）在 25.9-31.5 MJ/kg 范围内，与商业木炭相匹配。然而，在真空条件下由富含木质素的前体生产的生物油是复杂芳香族和直链烃的混合物，包括醛、酮、酚和呋喃，具有作为潜在加热油的能力，HHV 在 21.2-28.2 MJ/kg 范围内。此外，在较高温度下在真空环境下生产的生物炭比在 N 气氛下生产的生物炭具有更高的稳定性（22.5-35.9%）。
