Characteristics of nitrogen transformation and microbial community in an aerobic composting reactor under two typical temperatures

A regulating method for reducing nitrogen loss based on enriched ammonia-oxidizing bacteria during composting

“…Then NH 3 emission began to decrease till the 7th day when there was little emission detected because of the exhaustion of the easily degradable organic nitrogenous substances. The results were similar to some previous reports on the massive emission of NH 3 in the initial stage of composting (Li et al, 2013;Nakhshiniev et al, 2014). In this study, NH 3 emission mainly took place on days 2-5 due to the degradation of numerous nitrogenous substances.…”

Degradation of typical antibiotics during human feces aerobic composting under different temperatures

“…The pH was approximately 5.7 through the end of the composting period. Similar results were reported in a previous study (Li et al 2013), with a microbial community analysis showing varied microbes under mesophilic and thermophilic conditions, as well as pH variation. Similar results have been reported by Asano et al (2010).…”

“…Compared with RTC and 35 ± 2°C, thermophilic composting at 55 ± 2°C retained a higher concentration of nitrogen in the final compost. The physicochemical and microbiological mechanisms for this were discussed in a previous study (Li et al 2013).…”

Relationship between bacterial diversity and environmental parameters during composting of different raw materials

“…This is primarily because that the generation of alkaline ammonia also occurred during this phase. The later generation of low molecular organic acids and nitrification leads to the subsequent decline in pH (Li et al, 2013;Maeda et al, 2010;Omar et al, 2014). The final pH value of compost is widely used to evaluate the quality of compost products because they influence both soil pH and the bioavailability of nutrients to plants after application.…”