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한국폐기물자원순환학회지 update

JOURNAL OF KOREA SOCIETY OF WASTE MANAGEMENT

  • : 한국폐기물자원순환학회(구 한국폐기물학회)
  • : 공학분야  >  환경공학
  • : KCI등재
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  • : 연속간행물
  • : 연8회
  • : 2093-2332
  • : 2287-5638
  • : 한국폐기물학회지(~2009)→한국폐기물자원순환학회지(2010~)

수록정보
수록범위 : 1권1호(1984)~37권8호(2020) |수록논문 수 : 2,863
한국폐기물자원순환학회지
37권8호(2020년 12월) 수록논문
최근 권호 논문
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KCI등재

1미세조류가 생성시킨 soluble extracellular polymeric substances (sEPS) 정량시 잔여기질 배제를 위한 SN법 적용 가능성 검토

저자 : 심태석 ( Tae-suk Sim ) , 김윤지 ( Yun-ji Kim ) , 황선진 ( Sun-jin Hwang )

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 513-520 (8 pages)

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This study investigates the correlation between soluble extracellular polymeric substances (sEPS) and fouling evoked according to mixotrophic metabolism in microalgae membrane bioreactor (MMBR) . The Somogyi-Nelson (SN) method is used to the sEPS because, it can be applied also for low concentration levels (<200 mg/L) in the case of glucose solutions unlike the dinitrosalicylic acid method. The concentrations of sucrose, a nonreducing polysaccharide that can replace sEPS, and reducing sugar, which can serve as a substrate, are normally estimated via the total organic carbon (TOC) analysis. The sEPS content could be quantified by excluding the reducing sugar concentration through the SN method, which includes the residual reducing sugar injected as a substrate in the MMBR. The SN method could accurately measure the widest range at the 500-nm wavelength. To confirm the applicability of the proposed method for various types of reducing sugars, sucrose was then analyzed in mixtures with three reducing sugars, that is, glucose, fructose, and galactose. The resulting coefficient of the slope variation of the regression analysis, excluding the reducing sugar content via the SN method in the TOC of the mixed solution, was ≤15% and the determination coefficient was ≥0.99, indicating high accuracy and linearity. This confirmed that the SN method can be used to quantify sEPS in MMBR experiments by excluding the reducing sugars content, especially at low concentrations (<200 mg/L for glucose).

KCI등재

2바이오가스의 수증기 복합 개질 반응의 열역학적 평형 계산 및 최적 반응 조건 연구

저자 : 김지은 ( Jee-eun Kim ) , 전경원 ( Kyung-won Jeon ) , 윤조희 ( Cho-hee Yoon ) , 장원준 ( Won-jun Jang )

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 521-530 (10 pages)

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This study explores the optimal reaction condition for combined steam reforming of biogas produced from organic waste by conducting thermodynamic equilibrium analysis (Gibbs free energy minimization). The ratio of methane to carbon dioxide conventionally produced in biogas plants is fixed at 60 : 40. CH4 conversion, CO2 conversion, H2 yield, CO yield, carbon yield, and H2/CO ratio are estimated at various H2O/(CO2 + CH4) ratios (0 ~ 3.0) and temperatures (500 ~ 1000℃). The optimal reaction condition was explored with consideration of the amount of generated steam, the conversion, the yield, and the carbon yield . When the H2O/(CO2 + CH4) ratio is above 1.5, carbon formation can be avoided for all temperature ranges. However, the H2 yield at the same ratio is lower than that at thermodynamic equilibrium. This is due to the reverse water-gas shift reaction. By contrast, when the H2O/(CO2 + CH4) ratio is 2.0, the conversion and yield in the experimental results are consistent with those at thermodynamic equilibrium. Thus, it can be confirmed that the optimal reaction for hydrogen production from the combined steam reforming of biogas occurs at an H2O/(CO2 + CH4) ratio of 2.0 and a temperature of at least 650℃.

KCI등재

3미활용 농업부산물로부터 바이오오일 생산을 위한 급속 열분해 시스템 최적화 및 탈산소 반응에 관한 연구

저자 : 이용희 ( Yong-hee Lee ) , 정창훈 ( Chang-hoon Jeong ) , 진홍덕 ( Hong-deok Jin ) , 구윤정 ( Yun-jeong Gu ) , 변희주 ( Hui-ju Byeon ) , 김학민 ( Hak-min Kim ) , 정대운 ( Dae-woon Jeong )

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 531-541 (11 pages)

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In this study, a fast pyrolysis system is optimized to produce bio-oil with high yield and high heating value (HHV) from agricultural by-products. The agricultural by-products is screened by elemental analysis and HHV analysis. Among the various agricultural by-products, the fruit tree waste is selected as a feedstock to generate bio-oil because it shows the highest HHV. The pyrolysis reaction system is to produce bio-oil optimized by controlling gas velocity and reaction temperature. Consequently, the highest bio-oil yield is obtained when the gas velocity is 3.0 and the reaction temperature is 500℃. This is because the heat transfer rate increases as the gas velocity increases, and the pyrolysis of organic matter accelerates as the temperature increases. In addition, deoxygenation reaction is performed to increase the HHV of the produced bio-oil. The CoMo catalyst have been used for the deoxygenation reaction. The HHV of the bio-oil increases to 7,400 kcal/kg by deoxygenation reaction. This result is due to that the oxygen content is decreased by deoxygenation reaction.

KCI등재

4HZSM-5와 HY 상에서 억새의 촉매열분해에 미치는 반탄화 효과

저자 : 우기정 ( Gi Jeong Woo ) , 김영민 ( Young-min Kim )

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 542-548 (7 pages)

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In this study, the effect of biomass torrefaction on the production of aromatic hydrocarbons via the catalytic pyrolysis of Miscanthus over HZSM-5 and HY was investigated using a pyrolyzer-gas chromatography/mass spectrometry. During the torrefaction of Miscanthus, acetic acid, furfural, vinyl phenol, and vinyl guaiacol were emitted mainly by the partial decomposition of hemicellulose and lignin. Compared to the untorrified Miscanthus, torrified Miscanthus produced the larger amount of aromatic hydrocarbons during the catalytic pyrolysis over HZSM-5 and HY, suggesting the effect of biomass torrefaction. Between two catalysts, HZSM-5 produced the larger amount of aromatic hydrocarbons during the catalytic pyrolysis of Miscanthus than HY due to its high acidity and proper pore size.

KCI등재

5수열 반응에 의한 생활폐기물 내 유기성분 분해 특성

저자 : 장하나 ( Ha-na Jang ) , 박문식 ( Mun-sik Park ) , 연승재 ( Seung-jae Yeon ) , 채도원 ( Do-won Chae ) , 정승환 ( Seung-hwan Jeong ) , 정은정 ( Eun Jeong Jeong ) , 손광표 ( Kwang-pyo Son ) , 강승모 ( Seung-mo Kang ) , 안선용 ( Seon-yong Ahn ) , 양승현 ( Seung-hyun Yang ) , 최동혁 ( Dong-hyu

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 549-556 (8 pages)

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Recently, MBT (Mechanical Biological Treatment) facilities were built up and operated to separate and recycle MSW (Municipal Solid Wastes)in South Korea. However, the size distribution of MSW is very rough, and it is causing operation problem because MSW would be crushed in undersize diameter by mechanical equipment before feeding each separation process. Also, the organic material should be pre-separated to reuse recycle material in MSW. In this research, the reactor of 1ton/batch using hydro-thermal reaction was tested to present the separation efficiency and the size distribution of MSW by experimental factors.

KCI등재

6수열탄화를 이용한 커피찌꺼기 Biochar의 최적 생성 조건 및 중금속 흡착 평가

저자 : 김장영 ( Jang Yeong Kim ) , 조우리 ( Woori Cho ) , 이진주 ( Jin Ju Lee ) , 최정우 ( Jeong Woo Choi ) , 이재섭 ( Jae Seop Lee ) , 이재영 ( Jai-young Lee )

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 557-563 (7 pages)

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Coffee drinks are one of the most popular beverages around the world, and coffee beans are grown in about 80 countries. In addition, the consumption of coffee beans in Korea is about 150,000 tons as of 2018, the world's sixth largest, and the annual consumption of coffee per capita by people over 20 years old is about 353 cups, up 21 percent from 291 cups in 2015, which is about three times the consumption per capita of 132 cups by the world's population. However, despite the continued increase in coffee bean consumption, 99.8% of the coffee beans used remain as dregs, with the cost of handling them reaching 764.2 billion won a year, and environmental problems caused by CO2 from the process cannot be ignored. Common coffee wastes have the advantage of high moisture content and high absorbency due to porous surface. Here, hydrothermal carbonization (HTC) is one of the thermal treatment methods and is a method of carbonation using temperatures of 180 ~ 300℃ and high pressure in a closed environment with limited oxygen. Unlike other pyrolysis methods, thermo-degradation methods have the advantage of cost-benefit that does not require pre-treatment of dryness because they conduct at a relatively low temperature and use water vapor pressure caused by evaporating moisture in the raw material itself. Therefore, it is suitable to recycle coffee wastes effectively using thermal water pressure carbonation reaction. We also want to evaluate the performance of adsorption by generating Activated Biochar through chemical activation as a method of utilizing Biochar produced after HTC reaction. Therefore, in this study, the optimum generation conditions of Biochar are derived by applying HTC method, which is suitable for utilizing the high moisture content and porous properties for recycling coffee wastes, and after deriving the optimal generation conditions for chemical activation of the Biochar produced, PAC(Powdered Activated Carbon) is compared with the characteristics analysis of coffee wastes and Biochar and Activated Biochar to check and evaluate the absorption performance of heavy metals.

KCI등재

7중전기기 절연용 고농도 폐 육불화황(SF6)의 플라즈마 열분해특성 및 부산물 고정화 기초 연구

저자 : 김종범 ( Jong Bum Kim ) , 류재용 ( Jae Yong Ryu )

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 564-573 (10 pages)

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SF6 was decomposed using the high-temperature heat generated during cement production and plasma pyrolysis, followed by the immobilization of the CaO and SF6 byproducts in the kiln combustion reactor and the resource recovery; based on the results, some ways to prevent the SF6 recombination, analyze the byproduct characteristics, and identify their generation path are suggested. In this study, the plasma power range from 5.9 to 10.1 kW; with increasing its value, the SF6 destruction and removal efficiency also increased. When the water vapor was not added or added equivalently, the SF6 byproducts were HF, F2, SO2, and SO2F2; when the water vapor was added in excess, they were only HF and SO2. Therefore, adding excessive water vapor would be appropriate to produce gypsum by immobilizing the byproducts from CaO and SF6 decomposition in the cement kiln combustion reactor.

KCI등재

8파일럿 규모 버너에서 커피찌꺼기 바이오원유 및 폐스티로폼 열분해오일 혼합연료의 연소특성

저자 : 최상규 ( Sang-kyu Choi ) , 최연석 ( Yeon-seok Choi ) , 정연우 ( Yeon-woo Jeong ) , 한소영 ( So-young Han ) , 응웬반꾸잉 ( Quynh Van Nguyen )

발행기관 : 한국폐기물자원순환학회(구 한국폐기물학회) 간행물 : 한국폐기물자원순환학회지 37권 8호 발행 연도 : 2020 페이지 : pp. 574-582 (9 pages)

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The combustion characteristics of mixed fuels, consisting of bio-crude oil from coffee grounds and pyrolysis oil from polystyrene foam waste, were studied in a pilot-scale burner, along with blends of pyrolysis oil from polystyrene foam waste and kerosene. The used burner system was previously developed for bio-crude oil combustion; thus, it was equipped with an air-blast atomizing nozzle and adopted downward injection. The mixture of bio-crude oil from coffee grounds and kerosene exhibited a distinct phase separation and could not be placed into the burner directly. The bio-crude oil was heated before being supplied to the fuel nozzle due to its high viscosity, while the blends of pyrolysis oil from polystyrene foam waste did not require preheating because they were less viscous. Under atmospheric conditions, the pyrolysis oil from polystyrene foam waste was blended at least 50% to prevent incomplete combustion. The blends of bio-crude oil from coffee grounds and pyrolysis oil from polystyrene foam waste emitted relatively more NO due to the fuel-bound nitrogen in bio-crude oil. When kerosene was mixed with the pyrolysis oil from polystyrene foam waste, the flame temperature generally increased while the CO emission initially increased drastically and then decreased. The NO emission decreased with the kerosene mixing ratio, which might be attributed to the combined effect of fuel-bound nitrogen and other NO formation mechanisms.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동41회 피인용

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