• Title/Summary/Keyword: Manure and compost

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Evaluation of Continuously and Intermittently Aerated Hog Manure Compost Stability in a Pilot-scale Bin Composting System (파일럿 규모 빈 퇴비화 시스템에서 연속 및 간헐 통기 돈분 퇴비의 안정도 평가)

  • Hong, Ji-Hyung
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.40 no.5
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    • pp.100-108
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    • 1998
  • Compost stability represents the state of microbiological activity and measurements of respiration either through $CO_2$ evolution or $O_2$ uptake should provide the best indication of this state. Hog manure amended with sawdust was composted in a pilot-scale reactor vessels using continuous and intermittent aeration for 3 weeks. In this study we evaluated the $CO_2$ respiration rate effect of aeration method on the reduction of $CO_2$ evolution, and investigated the stability of fresh and finished compost for plant growth. The intermittently aerated composting is a practical proposition for a very stable compost making. The $CO_2$ respiration rate in the fresh and finished compost during intermittently aerated composting was maintained from 0.3 to 1.4 and was good for use in horticulture, while the continuously aerated composting was 7 to 23 and needed more time for compost curing.

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Analysis of the Composting Effect on Cow Manure by Aeration and Comparison of Characteristics of Cow Manure Pellet Composts According to Granulation Processing Method (송풍유무에 따른 우분퇴비화 효과분석 및 우분퇴비의 입상화방법별 특성비교)

  • Jeong, Kwang-Hwa;Kim, Jung-Kon;Lee, Dong-jun;Ravindran, B.;Kwag, Jung-Hoon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.25 no.2
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    • pp.69-76
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    • 2017
  • In the Korea, 80 percent of livestock manure were converted into compost and used as organic fertilizers. The livestock manure compost has two types of powder and pellet type (ID= 5~10 mm). The aim of this study was to investigate the properties of two types of cow manure compost pellet (cylinder and sphere type). Nitrogen concentrations of cylinder type and sphere type of compost pellets were 1.23 and 1.24%, respectively. There were similar with nitrogen concentration of cylinder and sphere types of compost pellets. As a result of analyzing the effect of granulation processing, it was found that the moisture content of the raw material was the most influential factor in the granulation processing in both of the processing types of the screw pressing method and the rotating cylinder method. When the cylinder and sphere types of compost pellets were dry to 20% of moisture content, the specific gravities of these compost pellets were 1.38 and 1.13, respectively. The compressive strength of cylinder type pellet and sphere type pellet were 27.6 and $11.3kg/cm^2$, respectively.

Physico-chemical properties of livestock manure compost using spent oyster mushroom (Pleurotus ostreatus) substrate (느타리 수확후배지를 이용한 가축분퇴비의 이화학적 특성)

  • Jae-Eun Jang;Sung-Hee Lim;Min-Woo Shin;Ji-Young Moon;Joo-Hee Nam;Gab-June Lim
    • Journal of Mushroom
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    • v.21 no.3
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    • pp.118-125
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    • 2023
  • We conducted an on-site application study at the livestock cooperative fertilizer plant to compare the composting period, temperature change, moisture content, and chemical properties between livestock manure compost using sawdust as a moisture regulator with those using spent oyster mushroom substrate. The composting period, moisture content, and fertilizer composition of compost containing spent oyster mushroom substrate did not differ from that of conventional compost mixed with sawdust after the first and second fermentation and post-maturation stages, it was suitable as a material for manufacturing livestock manure compost. The spent oyster mushroom substrate also lower the production cost of livestock manure compost by replacing the more expensive sawdust. The developed technology is expected to contribute towards the utilization of by-products of the oyster mushroom harvest while simultaneously producing high quality livestock manure compost.

Effects of Supplemental Levels of Fermented Compost on the Early Stage Composting Process of Pig Manure (발효퇴비 첨가수준이 돈분퇴비화 초기과정에 미치는 영향)

  • Jeong, K.H.;Heo, M.Y.;Kim, J.H.;Kwag, J.H.;Jeong, M.S.;Kang, H.S.
    • Journal of Animal Environmental Science
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    • v.15 no.3
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    • pp.271-280
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    • 2009
  • The best way to treat livestock manure is to recycle as much as possible. The composting of livestock manure is a safe and economical treatment process. This study was carried out to investigate decomposition effect of pig manure by adding fermented compost. The fermented compost was added in pig manure mixed with sawdust as an inoculator, and the mixture was fed to composting reactor. Supplemental levels of fermented compost on the pig manure mixed with sawdust were regulated at 5, 10, 15 and 20% (V/V) respectively. The results were as follows ; 1. In all cases, PH range was between 7.6~9.05 during composting period. 2. The highest temperature and the long duration of thermophilic stage were observed in control treatment. 3. The number of microorganism reached at maximum on day 4, which recorded the highest temperature 4. Compost pile mixed with 10% of inoculator (fermented compost) showed the highest C/N ratio reduction.

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Evaluation of Compost Maturity during the Active Composting of Cow Manure and Castor Meal (우분과 피마자박을 이용한 퇴비화 과정 중 부숙도 평가)

  • Chang, Ki-Woon;Hong, Joo-Hwa;Lee, Jong-Jin;Han, Ki-Pil;Kim, Nam-Cheon
    • Korean Journal of Agricultural Science
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    • v.35 no.1
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    • pp.25-32
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    • 2008
  • This study was conducted to find an optimal combination rate of castor meal for the good qualitative compost and to estimate the humification grade by physico-chemical characterization and phyto-toxicity test during composting of the mixture with cow manure and castor meal. The material ratios of the compost which was mixed with cow manure(C), castor meal(C), and saw dust(S) were 5 : 1 : 4(CCS-1), 5 : 2.5 : 2.5(CCS-2) and 5 : 4 : 1(CCS-3) by volume to volume, and they were decomposed for 60 days. In the result, the changes of temperature in all treatments during composting radically increased more than $63.6^{\circ}C$ at the incipient stage, and gradually decreased around $42^{\circ}C$. At the 60 days after the treatment, pH was slowly increased from 7.0 to 8.0, and the C/N ratio was 12.3~13.8 at the final composting stage. The low C/N ratio value was caused by the castor meal with high nitrogen level(T-N 5.7%). G.I.(germination index) showed in the range of 77.5 to 82.6 in all treatments. Among all treatments CCS-1 was appeared to be the best condition for composting. Therefore, the combination rate of castor meal which was used for compost humification improvement could be recommended 10% to manufacture the good qualitative cow manure compost.

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Nitrogen Isotope Compositions of Synthetic Fertilizer, Raw Livestock Manure Slurry, and Composted Livestock Manure (화학비료, 가축분뇨 및 퇴비의 질소동위원소비)

  • Lim, Sang-Sun;Lee, Sang-Mo;Lee, Seung-Heon;Choi, Woo-Jung
    • Korean Journal of Soil Science and Fertilizer
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    • v.43 no.4
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    • pp.453-457
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    • 2010
  • To investigate the difference in N isotope ratio ($^{15}N/^{14}N$, expressed as ${\delta}^{15}N$) among N sources (synthetic fertilizer, livestock manure, and manure compost), eight synthetic fertilizer, four livestock manure, and thirty-seven compost samples were collected and analyzed for ${\delta}^{15}N$. The mean ${\delta}^{15}N$ values of N sources were $-1.5{\pm}0.5$‰ (range: -3.9 to +0.5‰) for synthetic fertilizer, $+6.3{\pm}0.4$‰ (+5.3 to +7.2‰) for manure, and $+16.0{\pm}0.4$‰ (+9.3 to +20.9‰) for compost. The lower ${\delta}^{15}N$ of synthetic fertilizer was attributed to its N source, atmospheric $N_2$ of which ${\delta}^{15}N$ is 0‰ Meanwhile, more $^{15}N$-enrichment of compost than manure was assumed to be resulted from N isotopic fractionation (faster loss of $^{14}N$-bearing compound than $^{15}N$) associated with N loss particularly via $NH_3$ volatilization during composting. Therefore, our study shows that ${\delta}^{15}N$ values could successfully serve in discriminating two major N sources (synthetic fertilizer and compost) in agricultural system.

Investigation of Hanwoo manure management and estimation of nutrient loading coefficients on land application

  • Won, Seunggun;You, Byung-Gu;Ra, Changsix
    • Journal of Animal Science and Technology
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    • v.57 no.5
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    • pp.20.1-20.8
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    • 2015
  • Background: In order to prepare for the regulation about the limit of manure production, the status of manure management and the amount of nutrients in the compost discharged from Hanwoo breeding farm shall be known. This study aimed to find the practical amount of nutrients (volatile solids, VS; total nitrogen, T-N; total phosphorus, T-P) in manure, and compost samples collected from 40 Hanwoo breeding farms and the loss of the nutrients was calculated during the composting period, which supports to develop nutrient loading coefficients (NLCs) for each nutrient. Results: Although the addition of bedding materials for composting caused the increase of the VS amount before composting, the comparison of VS, N, and P amounts in between manure and compost showed the lower VS by 4 % as well as T-N and T-P amounts by 69 and 40 %, respectively, of which values were corresponded with the NLCs of 0.96, 0.31, and 0.60 for VS, N, and P, respectively, based on the questionnaire, and sample analyses. Considering with the environmental impacts including land application from Hanwoo manure, P loss should be zero before and after composting. In this regard, nitrogen loss of 50 % occurs and VS was increased by 30 %. In addition, feasible cases for the calculations based on the notification from Ministry of Environment were compared with this study. Conclusions: The development of NLCs from Hanwoo manure in this study implies that the loss of nutrients in manure occurs during the composting or storing period. The mass balances of N and P from livestock manure to land application may be overestimated over the practical values. It is necessary to build up the database about each livestock category other than Hanwoo.

Quality of Leachate from Manure Compsost (축분퇴비의 침출수 수질 특성(지역환경 \circled2))

  • 홍성구;김진태
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2000.10a
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    • pp.584-589
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    • 2000
  • Water pollution induced by animal waste is one of the major problems in managing stream water quality. In this presentation, water quality of leachate from manure compost was analyzed by pot experiments, using a rainfall simulator. Based on the limited experiment conditions, the average concentrations of COD, SS, TKN, TP were up to 2000mg/L, 24g/L, 107mg/L, 50mg/L, respectively. The higher concentrations were generally observed when the amount of manure compost was greater and rainfall intensity was lower.

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Runoff Characteristics of Total-N and Total-P in Upland Surface Runoff Treated with Livestock Manure Compost (가축분뇨 퇴비가 시비된 밭 표면유출수의 총질소와 총인의 유출 특성)

  • Choi, Jin Kyu;Son, Jae Gwon;Lee, Hyun Jeong;Kim, Young Joo
    • Journal of The Korean Society of Agricultural Engineers
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    • v.54 no.6
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    • pp.29-37
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    • 2012
  • This study was carried out to runoff characteristics in an upland livestock manure compost. Irrigation, runoff and water quality data in the upland were analyzed periodically from May to November in 2011. The observed amount of rainfall, irrigation, runoff for the experimental upland during the investigation period were 1,299.7 mm, 32.0 mm, and 340.7 mm, respectively. The concentrations of T-N in compost and non-compost upland during study period were ranged from 2.09 mg/L to 6.66 mg/L and from 1.99 mg/L to 6.01 mg/L, respectively. which was generally higher than the quality standard of agricultural water (1.0 mg/L). The concentrations of T-P in compost and non-compost upland during study period were ranged from 0.069 mg/L to 0.525 mg/L and from 0.018 mg/L to 0.152 mg/L, respectively. The runoff pollutants loadings of T-N and T-P in compost upland were 10.05 kg/ha and 0.56 kg/ha, respectively. The runoff pollutants loadings of T-N and T-P in non-compost upland were 9.09 kg/ha and 0.26 kg/ha, respectively. The runoff pollutants loadings in T-N and T-P from this study were much lower values than the pollutant loadings of T-N and T-P from the upland published by the others studies. Runoff pollution loadings due to the upland field in order to identify the characteristics of various crops, farming methods and a variety of targets taking into account regional characteristics by conducting continuous monitoring runoff load estimate will be required.

Effects of Long-Term Fertilization on Microbial Diversity in Upland Soils Estimated by Biolog Ecoplate and DGGE

  • An, Nan-Hee;Lee, Sang-Min;Cho, Jung-Rai;Lee, Byung-Mo;Shin, Jae-Hun;Ok, Jung-Hun;Kim, Seok-Cheol
    • Korean Journal of Soil Science and Fertilizer
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    • v.47 no.6
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    • pp.451-456
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    • 2014
  • Organic amendment practices can influence diversity and activities of soil microorganisms. There is a need to investigate this impact compared with other types of materials. This study was carried out to evaluate the long term effects of chemical and organic fertilizer on soil microbial community in upland field. During the last 11 years green manure, rice straw compost, rapeseed cake, pig mature compost, NPK, and NPK + pig mature compost were treated in upland soil. Organic fertilizer treatment found with high bacterial colony forming units (CFUs) as compared to chemical and without fertilizer treatment. There was no significant difference in the actinomycetes and fungal population. The average well color development (AWCD) value was the highest in green manure and, the lowest in without fertilizer treatment. Analyses based on the denaturing gradient gel electrophoresis (DGGE) profile showed that rice straw compost and pig mature compost had a similar banding pattern while rapeseed cake, NPK, NPK + pig mature compost and without fertilizer treatment were clustered in another cluster and clearly distinguished from green manure treatment. Bacterial diversity can be highly increased by the application of organic fertilizer while chemical fertilizer had less impact. It can be concluded that green manure had a beneficial impact on soil microbial flora, while, the use of chemical fertilizer could affect the soil bacterial communities adversely.