School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China; Xi'an Key Laboratory of C1 Compound Bioconversion Technology, Xi'an Jiaotong University, Xi'an, 710049, China; Shaanxi Key Laboratory of Energy Chemical Process Intensification, Xi'an Jiaotong University, Xi'an, 710049, China.
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
Environ Res. 2024 Aug 15;255:119125. doi: 10.1016/j.envres.2024.119125. Epub 2024 May 11.
With the drastic growth of the economic and population, the global energy requirement is on the rise, and massive human and material resources have been put into the development of alternative and renewable energy sources. Biodiesel has been recognized as a green and sustainable alternative energy, but the raw materials-associated source and cost makes it difficult to achieve large-scale commercial production. Microbial lipids (ML) produced by oleaginous microbes have attracted more and more topics as feedstocks for biodiesel production because of their unique advantages (fast growth cycle, small footprint and so on). However, there are still many problems and challenges ahead towards commercialization of ML-based biodiesel, especially the cost of feedstock for ML production. Food waste (FW) rich in organic matters and nutrients is an excellent and almost zero-cost feedstock for ML production. However, current biological routes of FW-based ML production have some defects, which make it impossible to achieve full industrialization at present. Therefore, this review intends to provide a critical and comprehensive analysis of current biological routes of FW-based ML production with the focus on the challenges and solutions forward. The biological routes towards future FW-based ML production must be able to concurrently achieve economic feasibility and environmental sustainability. On this condition, an innovative integrated biological route for FW-based ML production has thus been put forward, which is also elucidated on its economic and environmental sustainability. Moreover, the prospective advantages, limitations and challenges for future scale-up of FW-based ML production have also been outlined, together with the perspectives and directions forward.
随着经济和人口的急剧增长，全球能源需求不断上升，大量的人力和物力资源投入到替代和可再生能源的开发中。生物柴油已被公认为一种绿色可持续的替代能源，但由于原料来源和成本问题，难以实现大规模商业化生产。由于具有独特的优势（生长周期快、占地面积小等），产油微生物产生的微生物油脂（ML）作为生物柴油生产的原料越来越受到关注。然而，ML 基生物柴油的商业化仍然面临许多问题和挑战，特别是 ML 生产的原料成本。富含有机物和营养物质的食物垃圾（FW）是 ML 生产的极好且几乎零成本的原料。然而，目前 FW 基 ML 生产的生物途径存在一些缺陷，使其目前无法实现完全工业化。因此，本综述旨在对 FW 基 ML 生产的当前生物途径进行批判性和全面的分析，重点关注挑战和解决方案。未来 FW 基 ML 生产的生物途径必须能够兼顾经济可行性和环境可持续性。在此基础上，提出了一种创新性的 FW 基 ML 生产综合生物途径，并对其经济和环境可持续性进行了阐述。此外，还概述了未来 FW 基 ML 生产规模化的预期优势、局限性和挑战，并提出了未来的展望和方向。
