Abstract

Anaerobic digestion (AD) presents a promising solution for the management of food-processing industrial wastes, offering both environmental and economic benefits through the production of renewable energy and organic fertilizers. However, the successful scale-up of AD systems from laboratory to industrial scales remains a significant challenge, requiring careful evaluation of process parameters, reactor design, and operational strategies [1]. This article reviews the scale-up considerations and challenges associated with the AD of food-processing wastes, focusing on substrate characteristics, reactor configurations, mixing mechanisms, and biogas production kinetics. Case studies and experimental data from pilot-scale and full-scale AD facilities are analyzed to assess the scalability and performance of AD systems under real-world conditions. Furthermore, techno-economic analysis and environmental impact assessments are discussed to evaluate the feasibility and sustainability of large-scale AD implementations [2]. The integration of pre-treatment technologies, process optimization strategies, and co-digestion opportunities is explored to enhance biogas yields, substrate utilization efficiency, and overall process robustness. By synthesizing insights from research studies and industrial experiences, this article aims to provide valuable guidance for stakeholders involved in the scale-up of AD projects for food-processing industrial wastes, facilitating the transition towards a circular economy and sustainable waste management practices [3].