Pre-Treatment and Co Digestion of Withered Flower Waste to Enhance Production of Biogas

Abstract

This comprehensive study is dedicated to optimizing biogas production from withered flower waste, employing diverse pre-treatment techniques (physical, chemical, hydrothermal, and biological) and innovative co-digestion strategies. The implementation of physical treatments, such as milling, microwave, and ultrasonic methods, effectively enhanced the accessibility and digestibility of the flower waste, resulting in a notable increase in biogas yield. Chemical treatments demonstrated significant improvements in feedstock digestibility and delignification levels, contributing to enhanced biogas production efficiency. Notably, the hydrothermal treatment process, conducted within the optimal temperature range, exhibited a substantial boost in anaerobic digestion performance. Additionally, the biological pre-treatment utilizing Aspergillus fumigatus SL1 showcased remarkable enzymatic activity, facilitating the breakdown of complex organic compounds within the waste material. Co-digestion experiments involving a blend of cow dung, chicken manure, pig manure, and sewage waste underscored the significant impact of varying substrate compositions on methane production efficiency, emphasizing the potential for synergistic effects in biogas production. Collectively, the findings highlight the promising potential of these combined techniques in advancing sustainable waste management and promoting renewable energy generation.