원문정보
초록
영어
Nitrous oxide (N2O) is fourth most green house gas in atmosphere after CO2, CH4, and aqueous vapour. Though its concentration relative low, however N2O gas very difficult ravelled in atmosphere, with impact to global warming up to 310 times compared to CO2. Biofiltration is the latest technology of pollution control for removing N2O with compost as medium filter. This technology has many advantages, such as low installation and operation cost, secure operation, low energy consumption, good stability, and able to remove pollutant with high efficiency. This research was conducted for evaluation influence of pelletized compost to N2O reduction efficiency and microorganisms growth in medium filter. The biofilter was operated at constant flow rates 88 cc/minute using batch flow system for 12 hours. The research indicated that the highest N2O removal efficiency as 62.25% is reached to be obtained at 5x5 mm pelletized containing 40% nutrition. Parameter estimation by adsorption Langmuir equation indicated that maximum biosorption capacities at 5x5 mm pellets size with 40% nutrition supplementation reached to 1.996 g/kg. Parameter which were estimated using Michaelis Menten equation indicated that maximum removal rate (Vm) and Ks (saturation constant) at pellet 5x5 mm with 40% nutrition content respectively reaches to 1215.89 gm‐3h‐1 and 8.51 gm‐3.