DBPapers

METHODOLOGY OF COMPOSTING RESEARCH UNDER LABORATORY CONDITIONS

D. Janczak, J. Mazurkiewicz, D. Wojcieszak, A. Bugala, K. Kozlowski
Wednesday 19 December 2018 by Libadmin2018

ABSTRACT

The article presents the methodology of conducting experiments related to the process of composting under laboratory conditions. For this purpose, a set consisting of eight fully metered reactors imitating the composting process under real conditions was built. In the insulated chambers, bayonet thermometers were placed, air coolers, condensate tanks and drains were installed. During composting experiments with daily measurements, the composition of gases coming from individual reactors is examined, i.e. CO2, NH3, O2, H2S as well as CH4 control tested to check for non-aerated zones. The composting process is related to ensuring the optimal aerobic conditions for microorganisms. A proper chemical composition of composted matter (25: 1 C/N ratio), humidity of 55-75%, airspace content of 50-65% and adequate aeration, etc. during the process, high temperature and the highest water evaporation are necessary will allow to get proper quality compost. The final product of composting is a biologically and chemically stable matter with high fertilizing value, which has a positive effect on the soil environment and plants growth. All these parameters can be controlled and checked during composting under laboratory conditions. After optimizing conditions in laboratory scale it is impossible to transferred results to a real scale.

Keywords: composting, bioreactor, biowaste, modelling


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