돈분뇨로부터 발생하는 암모니아의 배출 특성
Emission Characterization of Ammonia Produced from Swine Nightsoil.
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초록
This study was conducted to investigate the characteristics and concentrations of ammonia produced from the livestock swine nightsoil treated with or without the livestock - environment improving agents. Odor generating device made of acryl was made by volume of 96 L to sample the ammonia odor. When swine night soil was placed in the device,concentration of ammonia averaged out at about 23.4 ppmv and ranged from 16 ppmv to 40 ppmv. Removal efficiencies of them showed 50% to 90% as compared to initial level before spraying, when the spray type agents were used immediately after they purchased. The persistence of the efficiency was retained for first two days. Among the agents, the natural deodorant showed the best efficiency of 87 to 99%. To evaluate the effects of 5 kinds of dietary probiotic powders, the experiments were conducted and based dietary treatments without antibiotics on growing piglets. In experiments, 60 piglets (6.3±0.2 kg) were subjected to a 35-day feeding trial in which the effects of the dietary probiotic powder on the ammonia emission were compared. The ammonia gas emission was measured for every week. Ammonia emission from the swine nightsoil obtained from piglets supplemented with the probiotics power was lower than that of the nightsoil obtained from pigs in the control treatment (without probiotics). In ammonia removal efficiencies of the experimental groups, some products showed from 71% to 99% removal efficiencies throughout the entire period as compared to the control group. On the other hand, initial reduction of ammonia in some product was effective temporarily. After then, it did not show any reduction efficiency of ammonia.
Abstract
This study was conducted to investigate the characteristics and concentrations of ammonia produced from the livestock swine nightsoil treated with or without the livestock - environment improving agents. Odor generating device made of acryl was made by volume of 96 L to sample the ammonia odor. When swine night soil was placed in the device,concentration of ammonia averaged out at about 23.4 ppmv and ranged from 16 ppmv to 40 ppmv. Removal efficiencies of them showed 50% to 90% as compared to initial level before spraying, when the spray type agents were used immediately after they purchased. The persistence of the efficiency was retained for first two days. Among the agents, the natural deodorant showed the best efficiency of 87 to 99%. To evaluate the effects of 5 kinds of dietary probiotic powders, the experiments were conducted and based dietary treatments without antibiotics on growing piglets. In experiments, 60 piglets (6.3±0.2 kg) were subjected to a 35-day feeding trial in which the effects of the dietary probiotic powder on the ammonia emission were compared. The ammonia gas emission was measured for every week. Ammonia emission from the swine nightsoil obtained from piglets supplemented with the probiotics power was lower than that of the nightsoil obtained from pigs in the control treatment (without probiotics). In ammonia removal efficiencies of the experimental groups, some products showed from 71% to 99% removal efficiencies throughout the entire period as compared to the control group. On the other hand, initial reduction of ammonia in some product was effective temporarily. After then, it did not show any reduction efficiency of ammonia.
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