Enhanced silage pretreatment improving the biochemical methane potential of Miscanthus sinensis

• Published in: Environmental science and pollution research international Vol. 30; no. 12; pp. 34698 - 34708
• Main Authors: Huang, Xinlei, Ye, Meiying, Yuan, Lingli, Liu, Yanping
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2023
• Subjects: Acetic Acid; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Fermentation; Methane; Poaceae; Research Article; Silage - analysis; Waste Water Technology; Water Management; Water Pollution Control; Bioenergy; Ensiling; Biomass; Chemical property; Anaerobic digestion; Energy crop
• ISSN: 1614-7499; 1614-7499
• DOI: 10.1007/s11356-022-24518-z

The choice of silage additives is an important factor for the storage of silage. One standard ensiling method and two enhanced ensiling methods (using natural silage, silage with mixed lactic acid bacteria, and silage with acetic acid, respectively) were carried out on Miscanthus sinensis . To determine the effects of these different methods, the biochemical methane potential (BMP) was determined. The results revealed that ensiling with acetic acid was the best method among the three ensiling methods. Acetic acid could quickly reduce the pH of the system to inhibit the growth of harmful bacteria. The rate of loss of dry matter was 0.92% when acetic acid was added, and the cumulative methane production was 149.6 mL·g −1 volatile solids. From an analysis of correlations between the properties and BMP of silage, the contents of acetic acid and total volatile fatty acids were significantly correlated with the BMP. This study provides a theoretical basis for improving the BMP of M. sinensis and achieving better effects of silage. Graphical Abstract