• Title/Summary/Keyword: 음식물

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A Study on Anaerobic Treatment and Energy Recovery Technology of Food Waste by Using Hybrid Anaerobic Reactor (Hybrid Anaerobic Reactor를 이용한 음식물쓰레기의 혐기성처리 및 에너지 회수에 관한 연구)

  • Yoon Young-Bong;Park Jin-Young;Ju Jin-Young;Kim Myung-Ho
    • Journal of environmental and Sanitary engineering
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    • v.20 no.1 s.55
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    • pp.64-75
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    • 2005
  • The total production of food waste was about 11,398ton/day('03) in Korea. Also, food waste was treated by landfill, incineration, reuse and anaerobic digestion. The method of food waste treatment depended primarily on landfill. However, the method of landfill causing social problems was prevented to treat food waste in the first of January 2005.12) Thus, anaerobic digestion is an important method to treat food waste because of possibility of energy recovery as methane gas. In this study, the possibility of food waste treatment containing high organic material and low pH in the one stage anaerobic reactor to save cost and time and energy recovery using $CH_{4}$ gas by the hybrid anaerobic reactor (HAR) was measured. The HAR was designed by combing the merits of the anaerobic filter (AF) to minimize the microorganism shock when food waste of very low pH was injected and up-flow anaerobic sludge blanket (UASB) to prevent from plugging and channeling phenomena by large suspended solids when semi solids were injected. Granule was packed in the section of HAR. The purpose of the BMP experiment was to measure the amount of methane generated when organic material was resolved under anaerobic conditions, to grasp bio resolution of organic material. Total accumulated methane production per VS amount was $0.471(m^{3}/\cal{kg}\;VS)$. So, the value was about $81.2\%$ of theoretical methane production which was $0.58(m^{3}/\cal{kg}\;VS)$ by elementary analysis and organic matter removal velocity (K) was $0.18(d^{-1})$. From these results, food waste was treated by anaerobic treatment. From this study, $CH_{4}$ generation from food waste (11,398 ton/day) could be estimated. By using an energy conversion factor of Braun's study, $5.97KWh/m^{3}\;CH4,\;60\%\;of\;CH_{4}$ gas generation, the amount of total energy producing food waste is to 6,727MWh/day. It could be confirmed that energy recovery using $CH_{4}$ gas was possible. Above these results, food waste containing organic matters of high concentration could be treated in HRT 30 days under an anaerobic condition, using the hybrid anaerobic reactor and reuse of $CH_{4}$ gas was possible.

Effect of Food-Garbage Compost on the Characteristics and Storage of Persimmon Fruits (음식물 쓰레기를 이용한 퇴비가 감과육의 특성 및 저장성에 미치는 영향)

  • Cho Young-Je;Chun Sung-Sook;Cha Won-Seup;Park Joon-Hee;Oh Sang-Lyong;Lee Won-Young;Kim Jeung-Hoan;Park Jae-Gyeong
    • Food Science and Preservation
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    • v.12 no.3
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    • pp.199-203
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    • 2005
  • Reducing sugar content of persimmon fruits was increased by applying food-garbage compost Dungsi was brighter with yellow color than that of control. The Gabjubaekmok was darker than that of control with red color. It was suggested that taste of astringent was reduced because total phenol and soluble tannin contents were reduced by applying food-garbage compost. The vitamin C content of persimmon fruits during storage was higher than that of control. Stability of persimmon fruits by applying food-garbage compost and non-food garbage compost was about the same at room temperature. At low temperature, hardness of persimmon fruits was maintained for 20 days. Hardness and reducing sugar contents of persimmon fruits were increased by applying food-garbage compost. The result was shown that there was no effect on composition of persimmon fruits by applying food-garbage compost and maintaining hardness at room temperature, but at low temperature, the composition of persimmon fruits was changed.

A Study on the possibility of reuse foodwaste ferment as a bulking agent in livestock waste composting (음식물쓰레기의 발효생산물을 가축분뇨 퇴비화에서 수분조절제로의 활용가능성에 관한 연구)

  • Kim, Sung-Bum;Choi, Hoon-Gun;Kim, Quy-Youn;Lee, Seoung-Ki;Song, Young-Il;Kim, Hyun-Jung
    • Journal of the Korea Organic Resources Recycling Association
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    • v.12 no.1
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    • pp.58-66
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    • 2004
  • The purpose of this study is to examine the possibility of reuse fermented foodwaste as a bulking agent in livestock waste and foodwaste composting. Aerobic composting device was added to the following sample : Foodwaste + Sawdust, Livestock feces+Sawdust, Foodwaste + Ferment, Livestock feces + Ferment. Temperature, pH, OM/N ratio, moisture, heavy metals, and microbes were measured in process of aerobic composting. The results of this study are following. 1. The composting period is determined in 16~24days, according to the change of temperature and OM/N ratio. 2. The salinity contents in compost of livestock waste and foodwaste ferment is about 0.5%, which can be solved the problems of salinity contents in foodwaste composting. 3. The proper ratio of livestock waste composting is 40% of cow feces to 60% of foodwaste ferment. 4. Processing expense of aerobic composting of foodwaste and sawdust is 40 won/kg composting expense of foodwaste and ferment is 30 won/kg. Fermented product composting can cut down the expense of bulking agent than others.

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Experimental Evaluation and Resident's Assessment of Zero Food Waste System in Multi-family Housing Estates (공동주택단지의 음식물쓰레기 제로하우스 시스템 실용화를 위한 현장 시험운영 및 거주자 평가)

  • Oh, Jeongik;Lee, Hyunjeong
    • Journal of Korean Society of Environmental Engineers
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    • v.37 no.12
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    • pp.674-681
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    • 2015
  • This research conducts both experimental evaluation and resident's assessment of zero food waste system (ZFWS) in multifamily housing estates in order to explore the feasibility of ZFWS embedded in fermentation and extinction technology utilizing wood chips turned into fertilizer. Having been established in a multifamily housing estate, ZEFWS was proved to be functional and effective. During the 3-month experimental period, the weight between infused food waste and its reactor was reduced significantly enough, and the chemical analysis showed that the concentration of organic compounds went from 87.9% to 75.8%, $H_2O$ decreased from 69.7% to 45.5%, NaCl rose from 0.2% to 0.5%, pH increased from 4.6 to 7.8, and ATP escalated from 505.3 nmol/L to 723.5 nmol/L. Also, the chemical analysis of the output in the experimentation indicated adequacy of the organic fertilizer. In the self-administered questionnaire survey for residents participating in the field project, almost all the respondents viewed that ZFWS can compete with conventional food waste disposal methods and an idealistic way to upcycling food waste into fertilizer.

Evaluation of Fermentation Extinction Rate of Food Waste according to the Various Types of Wood Chip with Different Pore Structures (목질세편 세공구조에 따른 음식물쓰레기의 발효·소멸효율 평가)

  • Oh, Jeong-Ik;Kim, Hyo-Jin
    • Land and Housing Review
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    • v.3 no.3
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    • pp.299-305
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    • 2012
  • Various types of bio wood chip for fermentation-extinction of food waste was investigated by comparing their different pore structure with the performance of weight loss rate and microbial activity. The fermentation-extinction of food waste with bio wood chip was examined by adding 700~1,500g of food waste every day during 15 days to the fermentation-extinction reactor with condition of $30{\sim}50^{\circ}C$ temperature and 30~70% humidity, where 1,500g of bio wood chips were existed. The bio wood chips used in this experiment were categorized into 4 different types; microbial-mixing type(A biochip), macro pore type(B biochip) under $2{\mu}m$ of pore size, micro pore type of wood-chips(C biochip) under $0.1{\mu}m$ of pore size, viscous & sticky type(D biochip). As a result, A, B, C, D bio wood chip exhibited 85%, 63%, 92%, 73% weight loss of food waste with fermentation-extinction. The maximum weight loss of food waste was obtained at the fermentation-extinction experiments by using C bio wood chip. On the other hands, the maximum ratio of ATP to COD and TN was obtained from $3.00{\times}10^{-10}$ and $2.31{\times}10^{-11}$ in the case of C bio wood chip, comparing with other types of bio wood chip. Consequently, the performance of weight loss rate was affected with the micro pore structure of bio wood chip which have an advantage of extensive microbial activity space in the fermentation-extinction of food waste.

Effect of waste components on performance of acidogenic fermenter (음식물쓰레기의 구성성분에 따른 산발효조의 거동특성)

  • Han, Sun-Kee;Shin, Hang-Sik;Kim, Sang-Hyoun;Kim, Hyun-Woo
    • Journal of the Korea Organic Resources Recycling Association
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    • v.10 no.2
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    • pp.65-70
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    • 2002
  • The previous studies showed that rumen microorganisms had an enhanced waste-degrading capability and controlling the dilution rate was very effective in improving acidification efficiency. Generally the composition of food waste has a small deviation value, but one of the waste components (grains, vegetables or meats) can be increased dramatically depending on a seasonal variation. Thus, it is important to evaluate the efficiency of acidogenic fermentation in this case. Each component was spiked to be 80% of the total waste in R1 (grains), R2(vegetables), and R3 (meats). In Rl, rapid degradation occurred during the initial two days. R2 showed similar performance to that of general food waste. In R3, degradation retarded in the initial stage and then increased after controlling the dilution rate. The acidification efficiencies of the reactors were 88.7 (R1), 73.5 (R2), and 62.1% (R3), respectively. Therefore, the fermentation efficiency was kept over 62% regardless of waste components, indicating that it was stable to acidify food waste by employing rumen microorganisms and controlling the dilution rate.

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Effect of food waste properties on methane production (음식물쓰레기의 특성이 메탄생성량에 미치는 영향분석)

  • Lee, Soo Gwan;Choi, Hong Lim;Lee, Joon Hee
    • Journal of the Korea Organic Resources Recycling Association
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    • v.22 no.3
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    • pp.11-22
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    • 2014
  • The buffer capacity of food waste lowers during the collecting and transportation period. Food waste usually shows deficiency of micro nutrients especially molybdenum(Mo) and cobalt(Co). Therefore, food waste can be considered as a good mixture of livestock waste to enhance methane production. The objective of this study was to investigate the correlation between properties of substrates (local food waste and livestock manure) and methane yields for successive anaerobic fermentation process and its stable management. Food wastes were taken at an intermediate storage or treatment system provided by eight local authorities (Gangnam, Gangdong, Gwanak, Guro, Dongjak, Songpa, Yeongdeungpo, and Younsan) in Seoul. The solid content and potential methane yield of food wastes were average of 16% and $446.6STP-m{\ell}/g-VS$ (range from 334.8 to $567.5STP-m{\ell}/g-VS$) respectively. As for the beef cattle manure, the solid content and potential methane yield had an average of 26% and $280.6STP-m{\ell}/g-VS$ respectively. Potential methane yield had a positive correlation with fat content, and hydrogen content and a negative correlation with carbohydrate content ($r^2>0.8$). Therefore, the potential methane yield can be predicted based on the substrate characterization results with reasonable accuracy. Further research may be needed to investigate the relation of the properties of the mixture substrate and methane production rate. The mixtures may include food waste, livestock waste, and bulking agents (saw dust, rice hull, or agricultural byproducts etc.) to determine best combination of these substrates for maximum methane production rate.

Study on making feed for sea fish using earthworm powder and foodwaste product (지렁이 분말과 음식물쓰레기 부산물을 이용한 해수 사료화 연구)

  • An, Seung-Ryul
    • Journal of the Korea Organic Resources Recycling Association
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    • v.19 no.2
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    • pp.33-40
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    • 2011
  • This study was conducted for the purpose of examining stable disposal of foodwaste and possibility of multilateral use of its by-product by mixing earthworm powder and by-product generated from food waste disposal for making feed for sea fish. As a result of the study, content of crude protein (25.93%, 69.72%), crude lipid (16.91%,6.39%) crude ash (15.38%, 5.30%) in by-product of food waste and earthworm powder was higher than that in fish meals manufactured in the country, and it was judged that it is available to make good feed as a source of fatty acid as it contained C18:1n9c, 1n9t and c16:0. As for stability as a raw material for feed, it was shown that the stability was high when using the product as a raw material for feed not exceeding the standard of test items, and though change of content and ingredients to mixing ratio, it was shown that mixed specimen of fertilizer (S6) was higher, showing that it has great utilization in the future. Also, as it has more content of registered ingredients than any other raw materials for feed manufactured in the country, it is possible to be used as a substitute when manufacturing feed for sea fish. Therefore, it is judged that various studies such as economic analysis and technology of possible manufacturing will be needed in the future.

Automatic Segmentation of Stomach from the CT Image (CT 영상에서 위(Stomach)의 자동적인 추출)

  • 박승란;박종원;노승무
    • Proceedings of the Korean Information Science Society Conference
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    • 1999.10b
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    • pp.428-430
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    • 1999
  • 컴퓨터 단층촬영(Computed Tomography : CT)내의 위(stomach)에 대하여 연구하였다. 위는 모양이 변하면서 움직이는 정기이며 음식물로 채워진 부분과 공기로 채워진 부분으로 나뉘어져 있다. 위의 명암 값 정보와 위치 정보를 이용하여 자동적으로 추출을 한 다음, 음식물로 채워진 부분과 공기로 채워진 부분, 그리고 전체적인 위의 체적을 계산할 수 있는 알고리즘을 구현하였다.

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약이되는 약이야기 - 약과 음식물의 궁합 (1) - 술.담배 -

  • 사단법인 한국당뇨협회
    • The Monthly Diabetes
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    • s.217
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    • pp.76-77
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    • 2007
  • 어떤 음식을 섭취하고, 환자의 생활양식에 따라 약의 효과가 다르게 나타난다. 몇 달 전영국 식품 의약품 안전위원회에서 '약과 함께 먹지 말아야 할 음식'들을 발표하기도 했고, 여러 약 전문가들은 약의 효과를 최대로 늘리기 위해서는 환자의 식습관과 생활 태도가 중요하다는 것을 강조했다. 본 란에서는 약과 음식물의 상관성을 살펴보고 올바른 약의 복용법을 알아보고자 한다.

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