Effect of Fenton pretreatment combined with bacterial inoculation on humification characteristics of dissolved organic matter during rice straw composting. (January 2022) - Qu, Fengting
Highlights: Fenton pretreatment simulated and improved the activity of fungi in composting. The fungal number of related to DOM were higher for FeWI than that of CK and FeW. Key environmental factors of influencing changes of DOM were identified. Abstract: The main purpose of this study was to explore the effects of Fenton pretreatment combined with bacterial inoculation on humification characteristics of dissolved organic matter (DOM) during rice straw composting. Three treatment groups (Fenton pretreatment: FeW, Fenton pretreatment and bacterial inoculation: FeWI, control: CK) were carried out during composting. The results showed that total organic carbon concentration of DOM and HIX showed an increase trend in all treatments in the composting process. The fungi that affect DOM conversion showed remarkable effects, meanwhile, fungal numbers of influencing DOM conversion were higher for FeWI than CK and FeW. The contribution rate of fungi to DOM was greater than that of environmental factors in FeWI composting, while environmental factors accounted for a large proportion in FeW and CK composting. This study exhibits referential significance for the effective degradation of agricultural wastes.