Electronics Material Lab, College of Science and Engineering, James Cook University, Townsville, QLD, 4811, Australia.
Electronics Material Lab, College of Science and Engineering, James Cook University, Townsville, QLD, 4811, Australia.
Environ Res. 2023 Jun 1;226:115619. doi: 10.1016/j.envres.2023.115619. Epub 2023 Mar 9.
The agricultural industry faces a permanent increase in waste generation, which is associated with the fast-growing population. Due to the environmental hazards, there is a paramount demand for generating electricity and value-added products from renewable sources. The selection of the conversion method is crucial to develop an eco-friendly, efficient and economically viable energy application. This manuscript investigates the influencing factors that affect the quality and yield of the biochar, bio-oil and biogas during the microwave pyrolysis process, evaluating the biomass nature and diverse combinations of operating conditions. The by-product yield depends on the intrinsic physicochemical properties of biomass. Feedstock with high lignin content is favourable for biochar production, and the breakdown of cellulose and hemicellulose leads to higher syngas formation. Biomass with high volatile matter concentration promotes the generation of bio-oil and biogas. The pyrolysis system's conditions of input power, microwave heating suspector, vacuum, reaction temperature, and the processing chamber geometry were influence factors for optimising the energy recovery. Increased input power and microwave susceptor addition lead to high heating rates, which were beneficial for biogas production, but the excess pyrolysis temperature induce a reduction of bio-oil yield.
农业面临着废物产生量的持续增加，这与人口的快速增长有关。由于环境危害，人们迫切需要从可再生资源中发电和生产增值产品。选择转化方法对于开发环保、高效和经济可行的能源应用至关重要。本文研究了影响微波热解过程中生物炭、生物油和沼气质量和产量的因素，评估了生物质的性质和不同操作条件的组合。副产物的产量取决于生物质的内在物理化学性质。木质素含量高的原料有利于生物炭的生产，纤维素和半纤维素的分解导致更高的合成气形成。挥发分浓度高的生物质有利于生物油和沼气的生成。输入功率、微波加热探头、真空、反应温度和处理室几何形状等热解系统条件是优化能量回收的影响因素。增加输入功率和添加微波探头会导致高加热速率，这有利于沼气的生产，但过高的热解温度会降低生物油的产量。
