Pretreatment and Extraction of Anaerobic Digestion-Derived VFAs for Efficient Harnessing of Microbial Lipids and Their Subsequent Extraction

IF 3 3区工程技术 Q3 ENERGY & FUELS

BioEnergy Research Pub Date : 2025-09-30 DOI:10.1007/s12155-025-10896-y

Akash Bhattacharjee, Abhishek S. Dhoble

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Abstract

Anaerobic digestion-derived volatile fatty acids (VFAs) have emerged as key intermediates in sustainable biofuels and biochemicals production, offering a circular approach to organic waste valorization. This review explores recent advancements in enhancing VFA production through tailored pre-treatment strategies, optimized feedstock selection, and controlled process conditions. Furthermore, VFA extraction methodologies are discussed, with a focus on energy-efficient separation techniques. The integration of VFAs as feedstock for microbial lipid production is analyzed, highlighting substrate preferences, metabolic insights, and growth conditions for oleaginous yeast, which can thereby be cultivated in non-sterile conditions because of using VFAs as feedstock. Additionally, innovative lipid extraction technologies, including pulsed electric fields, hydrothermal liquefaction, and ionic liquids, are reviewed for their potential to enhance lipid recovery. By consolidating advancements across these domains, this review provides a comprehensive understanding of the technological landscape, identifying key challenges and future research directions to optimize VFA-driven biofuel production.

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厌氧消化衍生VFAs的预处理和提取及其对微生物脂质的有效利用

厌氧消化衍生的挥发性脂肪酸（VFAs）已成为可持续生物燃料和生化生产的关键中间体，为有机废物增值提供了一种循环方法。本文综述了通过定制预处理策略、优化原料选择和控制工艺条件来提高VFA生产的最新进展。此外，还讨论了VFA的提取方法，重点是节能分离技术。本文分析了VFAs作为微生物脂质生产原料的整合，强调了底物偏好、代谢见解和产油酵母的生长条件，因此，由于使用VFAs作为原料，产油酵母可以在非无菌条件下培养。此外，对脉冲电场、水热液化和离子液体等新型脂质提取技术在提高脂质回收方面的潜力进行了综述。通过整合这些领域的进展，本综述提供了对技术前景的全面了解，确定了优化vfa驱动的生物燃料生产的关键挑战和未来的研究方向。

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来源期刊

BioEnergy Research ENERGY & FUELS-ENVIRONMENTAL SCIENCES

CiteScore

6.70

自引率

8.30%

发文量

174

审稿时长

3 months

期刊介绍： BioEnergy Research fills a void in the rapidly growing area of feedstock biology research related to biomass, biofuels, and bioenergy. The journal publishes a wide range of articles, including peer-reviewed scientific research, reviews, perspectives and commentary, industry news, and government policy updates. Its coverage brings together a uniquely broad combination of disciplines with a common focus on feedstock biology and science, related to biomass, biofeedstock, and bioenergy production.