In this study, deodorizing efficiency of three deodorant products (1) A = ClO₂ Gel + charcoal, (2) B=Charcoal Gel, and (3) C = Gel (for Kimchi)) was investigated. For these experiments, a total of 15 odorants (4 reduced sulfur compounds, 2 volatile organic compounds, 7 carbonyl compounds, and 2 nitrogenous compounds) were investigated for a short term period. For the comparative analysis, 2 food types with strong odor properties (Kimchi and Fish) were selected and investigated. The analytical results were compared with respect to the blank sample (without deodorants) after normalization. Hence, if normalized concentration values are lower than unity one can assume that sample has positive deodorizing efficiency. The results of deodorant experiments indicate that the effects of the most common deodorant products are not effective enough to remove offensive odorants. However, the selection of deodorant products appears to be important, as they have very specific deodorizing efficiencies for certain compounds.

Recently many research and investment have been made for waste biomass to bio solid fuel development in Korea. In this study, monte-carlo simulation is applied to estimate the bio solid fuel product quality made from various biomass as raw materials. Commercial biomass and waste biomass raw material samples were collected to investigate the basic properties and to predict mixed effect to solid bio-fuel product. The results show that predicted subject properties about applying a single quality items was reasonable, but for mixed biomass raw material, correlations and logical relevance of several items will be need to assume that require additional consideration for it. The stochastic techniques established through this study will be applicable to bio-solid fuel product development with a variety of waste biomass.

Recently, it is a critical issue for Korea that Metropolitan Landfill site life extension was in crisis contrast for localresidents and local governments. In Europe and Japan, the generation of waste and landfills were suppressed and theyintroduced the MBT facility in order to increase the recycling and energy recovery. In this study, the process of domesticMBT facilities were evaluated by the physical and chemical composition, calorific value and biomass content, the aerobicbiodegradation of biodegradable waste by comparing and analyzing each step through the evaluation. Both organic residuesand inorganic residues carbon content discharged from the MBT analysis, moisture content, calorific value of residues didnot meet solid refuse fuels quality standards. While the biomass content and aerobic biodegradation higher than standardbiodegradable waste landfill in Europe. Biodegradable organic residue selected from domestic solid fuel manufacturingfacility is expected to be able to manage through the biomass content and biological stability analysis. Based on the resultsof future research it is needed to review the criteria and additional landfill energy recovery by incineration residues.