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http://dx.doi.org/10.17137/korrae.2017.25.1.103

Optimizated pH and Mitigated Ammonia Emission in Pig Manure Slurry by Soluble Carbohydrate Supplementation  

Lim, Joung-Soo (Animal Environment Division, National Institute of Animal Science)
Hwang, Ok-Hwa (Animal Environment Division, National Institute of Animal Science)
Lee, Sang Ryong (Animal Environment Division, National Institute of Animal Science)
Cho, Sung-Back (Animal Environment Division, National Institute of Animal Science)
Kwag, Jung-Hoon (Animal Environment Division, National Institute of Animal Science)
Lee, Dong-Hyun (Animal Environment Division, National Institute of Animal Science)
Jung, Min Woong (Animal Environment Division, National Institute of Animal Science)
Han, Deug-Woo (Animal Environment Division, National Institute of Animal Science)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.25, no.1, 2017 , pp. 103-110 More about this Journal
Abstract
In Concentrated Animal Feeding Operations(CAFOs), emission of ammonia from stored manure contributes negatively on the wellness of livestock. In CAFOs facilities, indoor aerial ammonia concentration oftentime surpasses the critical level potentially harmful to livestock's immune system. Understandably, numerous researches to control aerial ammonia have been conducted in countries where CAFOs were practiced for many decades. Some innovative technologies, such as scrubber, bio-filter, and additives emerged, as a result. Among them, microbial additives became popular in Korea, due to an easiness of use and affordability. However, microbial additives still have some weaknesses. Their price is still high enough to discourage farmers who run a small scale farm and their effectiveness are still questioned by many users and researchers. In the present study, we found soluble carbohydrates, such as sugar, glucose, and molasses, when supplemented to pig slurry manure, can mitigate ammonia emission. To be more specific, pig manure slurry(120kg), stored in container(200L), was supplemented with sugar at 0.1%(w/w) and was, subsequently, monitored for pH and aerial ammonia for next 10 days. From this experiment, it was found that the sugar supplementation was effective in mitigating the aerial ammonia concentration (33% in average) when monitored daily. Also, the pH of manure slurry was maintained at relatively low level(8.2) in sugar-supplemented manure slurry while it was elevated to 8.5 in untreated slurry. Conclusively, the obtained data suggest that soluble carbohydrate can mitigate ammonia emission by acidifying manure slurry. Additionally, it can be suggested that soluble carbohydrates, such as sugar, glucose, and molasses, can be reasonable choices for animal farmers who have been looking for an alternative choice to replace expensive microbial additives.
Keywords
Animal manure slurry; ammonia; soluble carbohydrate; pH;
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