Effects of Increasing Concentrations of Enrofloxacin on Co-Digestion of Pig Manure and Corn Straw

Enrofloxacin (ENR) is one of the most commonly used antibiotics in pig farms. In this study, using fresh manure and corn straw powder as substrates, effects different concentrations ENR (2.5, 10, 20 mg/L) on anaerobic digestion completely mixed reactors were investigated. A relatively low concentration (2.5 increased methane production by 47.58% compared with control group. Among volatile fatty acids (VFAs) reactors, propionic acid content was lowest, acetic kinase coenzyme F420 highest first seven days during peak gas production. However, 10 mg/L decreased 8.59% 20.25%, respectively. Furthermore, accelerated hydrolysis extracellular polymeric substances causes a significant accumulation VFA levels. The microbial community analyzed 16S rRNA sequencing. Proteiniphilum dominant bacterial genus. addition, at 2.5 effectively abundance diversity microorganisms, whereas high (10 significantly these parameters. This study demonstrated that had digestion.