Municipal waste stabilization in a reactor with an integrated active and passive aeration system

Mesophilic and Thermophilic Anaerobic Digestion of Organic Fraction Separated during Mechanical Heat Treatment of Municipal Waste

“…A sample of ORF for anaerobic digestion was collected from a randomly formed heap of about 5 m 3 , from which the laboratory sample was separated by the trapezoidal diverging method [13]. In accordance with the methodology, the sample was divided into three laboratory parts with a total volume of 45 L, which were then transported in sterile containers to the testing site.…”

Composting of EFB and POME Using a Step-feeding Strategy in a Rotary Drum Reactor: The Effect of Active Aeration and Mixing Ratio on Composting Performance

“…Moisture content affects microbial activity, as well as the physical structure, in the composting process, and thus has a central influence on the biodegradation of organic materials [18]. Previously reported optimum moisture contents for composting range is between 50% to 70% [19][20]. Excessive moisture content invites various problems such as anaerobic conditions in compost heap and loss of nutrients and pathogens in the form of leachate.…”

“…For this study, passive aeration with adequate turning process is enough to supply air in the compost pile inside the drum reactor. [19] also stated that the application of passive aeration on a larger scale simultaneously permits the thermophilic temperature to be maintained during the municipal solid waste composting process and constrains microbial activity in the reactor.…”

Effects of Technical Factors Towards Achieving the Thermophilic Temperature Stage in Composting Process and the Benefits of Closed Rector System Compared to Conventional Method – A Mini Review

“…This is because, the pressure difference between inside and outside the rotating drum will induced aeriation. Kasinski et al (2016) also stated that the application of passive aeration at a larger scale simultaneously permits the thermophilic temperature to be maintained during municipal solid waste composting process and constrains microbial activity in the reactor. Passive aeration permits thermophilic temperature levels in larger-scale composting processes to be retained, which, in turn, allows that biodegradation has occurred and microbial activity has not been repressed.…”

“…Hence, in order to control the optimum moisture content in the composting process, the continuous monitoring of the moisture in the compost mixture must be carried out regularly. Some studies conclude that the moisture content of the compost mixture in a closed reactor and its stabilization at about 50% (± 2%) could lead to increased stabilization of temperature at the thermophilic level (Kasinski et al, 2016;Liang et al, 2003).…”