Bioengineering and Environmental Sciences (BEES) Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
Bioengineering and Environmental Sciences (BEES) Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
Bioresour Technol. 2023 Jul;379:128954. doi: 10.1016/j.biortech.2023.128954. Epub 2023 Mar 23.
The study focuses on the effective conversion of sugarcane bagasse (SCB) by catalytic deoxygenation using various alkali and metal-based catalysts under N pressure employing water as solvent. The specific influence of catalyst over bio-crude yields (bio-oil and aqueous fraction) including energy recovery ratio was explored. The optimum catalytic condition (Ru/C) resulted in ∼ 70% of bio-crude and 28% of bio-oil with an improved HHV (31.6 MJ/kg) having 11.6% of aliphatic/aromatic hydrocarbons (C-C) which can be further upgraded to drop-in fuels. The biocrude composed of 44% of aqueous soluble organic fraction (HTL-AF). Further, the carbon-rich HTL-AF was valorized through acidogenic fermentation to yield biohydrogen (Bio-H). The maximum bio-H production of 201 mL/g of TOC conversion (KCO catalyst) was observed with 7.7 g/L of VFA. The SCB was valorized in a biorefinery design with the production of fuels and chemical intermediates in a circular chemistry approach.
该研究聚焦于在 N 压力下使用水作为溶剂，通过各种碱和基于金属的催化剂对甘蔗渣（SCB）进行催化脱氧转化。探讨了催化剂对生物粗产物（生物油和水相）收率的具体影响，包括能量回收比。最佳的催化条件（Ru/C）得到了约 70%的生物粗产物和 28%的生物油，HHV（31.6MJ/kg）得到了提高，具有 11.6%的脂肪族/芳香族碳氢化合物（C-C），可以进一步升级为替代燃料。生物粗产物由 44%的水相可溶有机部分（HTL-AF）组成。此外，富碳的 HTL-AF 通过产酸发酵被增值为生物氢（Bio-H）。使用 KCO 催化剂时，在 TOC 转化率为 201 mL/g 时观察到最大的生物氢产量为 201 mL/g，VFA 为 7.7 g/L。通过循环化学方法，在生物炼制设计中对 SCB 进行了增值，生产燃料和化学中间体。
