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Research article
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The effect of livestock manure composting on the degradation of polylactic acid (PLA)
축분 퇴비화가 polylactic acid (PLA) 분해에 미치는 영향
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Yan-Qing Wang, Jae-Hyeong Shin, Ji-Yun Hwang, Soo-Ki Kim
왕옌칭, 신재형, 황지윤, 김수기
- This study focused on expanding the environmentally friendly applications of livestock manure by investigating the condition of compost piles when polylactic acid …
- This study focused on expanding the environmentally friendly applications of livestock manure by investigating the condition of compost piles when polylactic acid (PLA), a biodegradable plastic material, is used in the composting process. Livestock manure has long been used for organic fertilizer and soil improvement, and recently, biodegradable plastics like PLA, which decompose efficiently in high-temperature environments, have noted as a place where environmental benefits will arise. When shredded PLA particles were added at approximately 8% by volume (23%/dry matter) to a 2.5-ton livestock manure mixture, the compost piles did not show decreased heating compared to the control pile without PLA. However, the treatment pile with PLA particles exhibited higher levels of odorous gases such as ammonia. The total microbial count per gram was slightly higher or significantly higher (p<0.05) in the treatment pile compared to the control pile. The rate of PLA particle degradation was assessed by counting the number of particles, showing a 44.1% reduction after 30 days and a 73% reduction by the end of the 100-day trial. This study examined the impact of PLA on livestock manure composting at a field level and suggests the need for further research on unexplored factors, as well as the possibility of environmental benefits of using PLA as a composting material. - COLLAPSE
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The effect of livestock manure composting on the degradation of polylactic acid (PLA)
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Research article
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The effect of feeding a mixed feed additive of benzoic acid, saponin, prebiotics, and minerals on odor emission during the storage process of pig manure in slurry pits
Benzoic acid, saponin, prebiotics, mineral 혼합 사료첨가제 급이가 슬러리피트 내 돈분뇨 저장과정 중 악취 발생에 미치는 영향
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Dongyeo Kim, Jumi Lee, Seunghun Lee, Riuh Wardhani, Jinho Shin, Heekwon Ahn
김동여, 이주미, 이승훈, WardhaniRiuh, 신진호, 안희권
- This study evaluated the impact of a mixed feed additive containing benzoic acid, saponin, prebiotics, and minerals on odor emission during pig …
- This study evaluated the impact of a mixed feed additive containing benzoic acid, saponin, prebiotics, and minerals on odor emission during pig manure storage in slurry pits. The treatment group was fed a diet supplemented with 0.5% of the additive. NH3 emissions were approximately 1.8 times higher in the treatment group compared to the control group, and sulfur compound emissions also tended to be higher in the treatment group than in the control group (p>0.05). Despite the known odor-reducing properties of benzoic acid and saponin, this study did not observe a reduction in NH3 or H2S. The low inclusion rate of benzoic acid (0.2%) likely hindered its efficacy. The impact of saponin on gut microbiota and odor reduction may be time-dependent, typically taking around 40 days for significant effects. Manure samples were collected within 20 days of supplementation in this study, so the microbial community may not have had sufficient time to adapt and decrease gaseous emissions. - COLLAPSE
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The effect of feeding a mixed feed additive of benzoic acid, saponin, prebiotics, and minerals on odor emission during the storage process of pig manure in slurry pits
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Research article
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Effect of spent coffee grounds and Stenotrophomonas rhizophila SRCM 116907 on the removal of ammonia and sulfur compounds in cattle manure
사용한 커피 찌꺼기와 스테노트로포모나스 리조필라 SRCM 116907가 축분의 암모니아 및 황 화합물 제거에 미치는 영향
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Jinwon Kim, Myeong-Seon Ryu, Young Kyoung Park, Ji-Won Seo, Ranhee Lee, Hee-Jong Yang, Do-Youn Jeong
김진원, 류명선, 박영경, 서지원, 이란희, 양희종, 정도연
- The purpose of this study is to develop technology to reduce odors in livestock facilities by using spent coffee grounds (SCGs) and …
- The purpose of this study is to develop technology to reduce odors in livestock facilities by using spent coffee grounds (SCGs) and Stenotrophomonas rhizophila SRCM 116907 to target the primary sources of odors, namely ammonia nitrogen and hydrogen sulfide emissions. The efficacy and mechanisms of SCGs in removing odorous substances are investigated, and microorganisms with organic decomposition and odor reduction capabilities are also selected. Furthermore, the application of SCGs in real settings is analyzed using Next-Generation Sequencing (NGS). The results showing the chemical properties of cattle manure revealed that ammonia and hydrogen sulfur compound are the main odor causes. Treatment of cattle manure 10 wt% SCGs + S. rhizophila SRCM 116907 resulted in significant reductions of approximately 68.7% in NH3-N and 49.6% in H2S, respectively. This study investigates the removal efficiency and mechanisms of odor-inducing substances using SCGs and S. rhizophila SRCM 116907. Promising results in enhancing ammonia removal were demonstrated with S. rhizophila SRCM 116907. - COLLAPSE
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Effect of spent coffee grounds and Stenotrophomonas rhizophila SRCM 116907 on the removal of ammonia and sulfur compounds in cattle manure
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Research article
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The effect of feeding a mixed feed additives on greenhouse gases emissions from slurry pits
4종 혼합 사료첨가제 사용이 슬러리피트 내 온실가스 발생에 미치는 영향
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Jumi Lee, Dongyeo Kim, Seunghun Lee, Riuh Wardhani, Jinho Shin, Heekwon Ahn
이주미, 김동여, 이승훈, WardhaniRiuh, 신진호, 안희권
- This study evaluated the impact of a feed additive mixture (comprising benzoic acid, saponin, prebiotics, and minerals at 0.5%) on greenhouse gas …
- This study evaluated the impact of a feed additive mixture (comprising benzoic acid, saponin, prebiotics, and minerals at 0.5%) on greenhouse gas emissions during pig manure storage in laboratory-scale slurry pits. Compared to the control, the group fed with additives exhibited a higher average CO2 emission rate (51.7±22.9 g/day/m3-slurry vs. 29.4±2.9 g/day/m3-slurry), though this difference was not statistically significant (p>0.05). However, the CO2 emission reduction rate over time was steeper with the additive. For CH4, the average emission rate was 1.5±0.9 kg/day/m3-slurry with the additive and 1.0±0.4 kg/day/m3-slurry in the control, with no significant difference (p>0.05). While the additive group initially produced more CH4, this trend reversed later in the experiment. These findings suggest that the potential of feed additives to reduce CO2 and CH4 emissions may become more apparent over longer experimental periods. In contrast, N2O emissions were significantly lower with the additive (6.2±2.5 mg/day/m3-slurry) compared to the control (36.0±15.1 mg/day/m3-slurry), representing an approximately 81.7% reduction (p<0.05). This effect was most pronounced during the early stages of manure storage. Consequently, feed additives effectively mitigate N2O emissions early in the storage process. Given the relatively short study duration of 55 days, further research is warranted to assess greenhouse gas emissions over extended periods of pig manure storage. - COLLAPSE
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The effect of feeding a mixed feed additives on greenhouse gases emissions from slurry pits
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Research article
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CFD simulation of wet electrostatic scrubbers for the mitigation of dust in livestock buildings
축산 시설 내 먼지 저감을 위한 습식 전기집진기의 전산유체역학 시뮬레이션
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Se-Woon Hong, Jinseon Park, Se-Yeon Lee, Kehinde Favour Daniel, Chae-Rin Lee, Ji-Yeon Park
홍세운, 박진선, 이세연, DanielKehinde Favour, 이채린, 박지연
- Effective dust removal in livestock facilities is crucial for maintaining air quality and protecting both animal and human health. This study investigated …
- Effective dust removal in livestock facilities is crucial for maintaining air quality and protecting both animal and human health. This study investigated the performance of a conceptual wet electrostatic scrubber (WES) in removing dust particles (PM10 and PM2.5) from livestock facilities using a computational fluid dynamics (CFD) model. The CFD model was developed to understand the principles of the WES including corona discharge, water droplet charging in an electric field, electrostatic forces, and the dynamics of dust particles. The CFD results showed that the water droplet charge varied significantly with the electrode size and space charge density. As the water droplets were charged greatly, the dust removal efficiency was improved. In addition, the dust collection performance increased significantly when both water droplets and dust particles were charged negatively and positively, respectively. The findings emphasized that the acceleration of dust particles induced by the electrostatic forces must be sufficiently large to enhance the dust removal efficiency. The study demonstrated that the CFD simulations are effective for evaluating the WES performance and understanding the dust collection process. - COLLAPSE
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CFD simulation of wet electrostatic scrubbers for the mitigation of dust in livestock buildings
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Research article
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Effects of supplying filtered liquid manure fertilizer mixed with ammonium phosphate on environmental, growth, and antioxidant activity of Lettuce (Lactuca sativa L.)
인산암모늄 혼합한 가축분뇨 유래 여과액비 공급이 상추의 환경, 생육 및 항산화 성분변화에 미치는 영향
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Tran Yen Linh Le, Su-Yeon Shim, Junkyung Lee, Byong-O Lee, Hyun-Sik Choi, Soo-Ryang Kim, Sung-Ha Hong, Myung-Gyu Lee, Sun-Goo Hwang
옌린레쪈, 심수연, 이준경, 이병오, 최현식, 김수량, 홍성하, 이명규, 황선구
- As the consumption of meat has increased in the global market, the development of effective strategies for managing livestock manure has become …
- As the consumption of meat has increased in the global market, the development of effective strategies for managing livestock manure has become increasingly important. The use of livestock manure in agriculture presents multiple benefits, including enhanced soil fertility, reduced reliance on chemical fertilizers, and improved waste management. This study aimed to evaluate the differences between chemical liquid fertilizer (CLF) and the filtered liquid manure fertilizer mixed with ammonium phosphate (FLF + P) in the growth and physiological activity of lettuce. Growth assessments, water quality measurements, and antioxidant analyses were conducted. In the results of growth assessments, the plant growth under different fertilizer supplies did not show significant differences. Fertilizer quality measurements included EC and pH assessments, conducted both before and after crop absorption for each treatment group. While pH levels did not differ before and after crop absorption for both CLF and FLF + P, EC measurements indicated a decrease in EC values after crop absorption for both treatment groups. Antioxidant analysis results showed no significant differences between the two treatments in total phenol content (TPC) and DPPH scavenging activity. In red lettuce, reducing power of FLF + P exhibited significantly higher values than CLF. - COLLAPSE
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Effects of supplying filtered liquid manure fertilizer mixed with ammonium phosphate on environmental, growth, and antioxidant activity of Lettuce (Lactuca sativa L.)
Journal Informaiton
Journal of Animal Environmental Science
Journal of Animal Environmental Science
The Korean Society of Animal Environmental Science & Technology
(사)한국축산환경학회
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Tel: +82-70-4110-0180 / E-mail: admin@ksaest.org Copyright© The Korean Society of Animal Environmental Science & Technology. Powered by APUB
Tel: +82-70-4110-0180 / E-mail: admin@ksaest.org Copyright© The Korean Society of Animal Environmental Science & Technology. Powered by APUB