engleski

Kinetic Analysis of Aerobic Composting of Tobacco Industry Solid Waste

Solid waste accumulated during processing of tobacco for the cigarette manufacture contains mostly tobacco particles and flavoring agents. Its main characteristics are high content of nicotine, which is a toxic compound, and high value of total organic carbon of the aqueous extract. Due to this fact tobacco waste cannot be disposed with urban waste.The aim of this work was to stabilize tobacco solid waste by aerobic composting. The experiments were carried out in the closed thermally insulated column reactors (1.0 l and 25 l) under adiabatic conditions and at 0.9 l min-1 kg-1 of VS of airflow rate during 16 days. During the process temperature changes in the reactor, CO2 production and the numbers of mesophilic and thermophilic population in the mixed microbial culture were closely monitored. A simple empirical model was used to simulate biodegradation rate of organic fraction of solid waste. It was found out that the selected model describes aerobic composting fairly well, although only two kinetic parameters (k0 and n) were estimated.

tobacco solid waste ; nicotine ; aerobic composting ; adiabatic closed column reactor ; modeling the process

nije evidentirano