• Journal of Climate Change Research
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• v.3 no.3
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• pp.211-224
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• 2012

Technology for energy recovery from waste can reduce the greenhouse gas emissions. So recently, there are several companies using RDF, RPF, WCF instead of using only coal fuel and it's part of the fuel on the increase. In this study, we developed Wood chip fuel $CO_2$ emission factor through fuel analysis. It's moisture content is 23%, received net calorific value is 2,845 kcal/kg, and received basis carbon is 34%. The result of emission factor is $105ton\;CO_2/TJ$, it's 5.9% lower than 2006 IPCC guideline default factor $112ton\;CO_2/TJ$. The gross GHG(Greenhouse gases) emissions of plant A is $178,767ton\;CO_2 eq./yr$, and Net GHG emissions is $40,359ton\;CO_2 eq./yr$. Therefore, the reduction of GHG emissions is $138,408ton\;CO_2/yr$ through using WCF, and I accounts for 77% of all GHG emissions.

• Journal of the Korean Society of Industry Convergence
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• v.21 no.3
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• pp.109-115
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• 2018

This paper proposes the method to develop the fuel of suljigemi pellet using agricultural by-products the occurred during the manufacturing of alcohol. The goal of the development of suljigemi using biomass is to make the pellet fuel of high calorie. The suljigemi pellet is difficult to recycle waste in the manufacture company of alcohol. suljigemi pellet has the effect of zero emission as the soil conditioner using ash after burning. Also suljigemi pellet has the reduction effect of carriage fee, fuel economy and low-cost high-efficiency effects, environmentally clean fuel as CO2 emissions savings. So the technologies of the suljigemi fuel pellet are developing low carbon, green growth renewable energy fuel through futuristic energy system will be. In experiments, suljigemi pellets confirmed the calories by about 10% higher than wood pellets with the same conditions.

• 한국생물공학회:학술대회논문집
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• 2005.10a
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• pp.250-255
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• 2005

Trichoderma inhamatum KSJ1, a filamentous fungus, isolated from rotten wood showed high ability to hydrolysis of cellulosic materials. Enzyme productivity by strain KSJ1 was high in the cultivation using carbon sources such as cellulosic materials and lignocellulosic wastes as rice straw and paper waste. In previous study peptone was one of optimum organic nitrogen sources in producing cellulases for saccharification of food wastes. However, it was too expensive using peptone as organic nitrogen source, so, in this study, soybean and yeast were applicated to substitute peptone. Yeast showed producing high enzyme activity, so it was estimated that yeast is available in producing cellulase using Trichoderma inhamatum KSJ1 at industrial Production.

• The Plant Pathology Journal
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• v.16 no.5
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• pp.283-285
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• 2000

Two field tests were conducted in 1995 to examine the effects of composts and soil amendments on physicochemical properties of soil in relation to Phytophthora root and crown rot of bell pepper. Chitosan, crab shell waste, humate, sewage sludge-yard trimmings, and wood chips were applied to test plots, some of which affected the levels of P, K, Mg, pH, and H. Physicochemical properties were not related with disease incidence, but percent organic matter, estimated nitrogen release, K, and Mg were correlated with total microbial activity. The elements K and Mg were especially responsible for the increased soil microbial activity that could affect development of root and crown rot of pepper.

• Mycobiology
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• v.34 no.4
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• pp.159-165
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• 2006

One of the most economically viable processes for the bioconversion of many lignocellulosic waste is represented by white rot fungi. Phanerochaete chrysosporium is one of the important commercially cultivated fungi which exhibit varying abilities to utilize different lignocellulosic as growth substrate. Examination of the lignocellulolytic enzyme profiles of the two organisms Phanerochaete chrysosporium and Rhizopus stolonifer show this diversity to be reflected in qualitative variation in the major enzymatic determinants (ie cellulase, xylanase, ligninase and etc) required for substrate bioconversion. For example P. chrysosporium which is cultivated on highly lignified substrates such as wood (or) sawdust, produces two extracellular enzymes which have associated with lignin deploymerization. (Mn peroxidase and lignin peroxidase). Conversely Rhizopus stolonifer which prefers high cellulose and low lignin containg substrates produce a family of cellulolytic enzymes including at least cellobiohydrolases and ${\beta}-glucosidases$, but very low level of recognized lignin degrading enzymes.

• Journal of The Korean Society of Agricultural Engineers
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• v.50 no.4
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• pp.51-58
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• 2008

Unit costs for energy production in bioenergy facilities are dependent upon both fixed cost for facility construction and operational costs including biomass feedstock supply. With the increase of capacity, unit fixed cost could be decreased while supply cost tends to increase due to the longer transportation distance. It is desirable to take into account biomass availability in planning bioenergy facilities. A cumulative curve relationship was proposed to relate biomass availability and cumulative products of biomass amount and transportation distance. Optimum size of gasification facilities was affected by collection cost, biomass cumulative relationship. Based on biomass availability of Icheon-City, optimum sizes were about $400kW_{th}$ for gas production, and about $200kW_{el}$ for power generation. Unit cost of bioenergy production could be substantially reduced by reducing collection cost through supplying biomass from diverse sources including land development areas where significant amount of waste wood is generated. When planning bioenergy facilities, however, biomass availability and spatial distribution are key factors in determining the size of capacity.

• Journal of Korean Society of Forest Science
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• v.23 no.1
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• pp.45-48
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• 1974

결론적(結論的)으로 목재공업(木材工業)은 분산형태(分散形態)로 폐재(廢材)의 수집(收集) 및 그 종류(種類)도 다양(多樣)하므로서 자원화(資源化)로는 원료(原料)의 제약(制約), 생산규모(生産規模), 생산시(生産時)의 공해발생(公害發生), 제품의 수요 등 유동적(流動的)이며 상대적(相對的)인 가변인자(可變因子)가 많다. 그럴수록 그 특성(特性)을 충분(充分)히 살리는 집약적(集約的)이며 다변적(多邊的)인 이용(利用)을 꾀하면서 최신(最新)의 가공기술(加工技術)과 시설(施設)의 도입(導入)을 검토(檢討)하며 그의 연구지원(硏究支援)도 뒤따라야 하겠다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.05a
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• pp.209-210
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• 2019

Current international concerns are the energy crisis due to climate change and depletion of fossil fuels due to global warming. Korea has a very high dependency on energy imports 93%. In Korea, 63% of the country is forested, and a power plant using wood biomass is being built in Korea. Biomass fly ash, a by-product of biomass energy generation, is now being discarded. There is little research to utilize discarded biomass fly ash. Therefore, this study aims to solve the environmental problems, develop new mixed materials, improve the quality and utilize the biomass fly ash, which is a by-product of the industrial waste. As a result of the experiment, the flowability decreased as the replacement ratio of biomass fly ash increased. As the replacement ratio of biomass fly ash decreased, the amount of air content.

• Journal of Environmental Science International
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• v.30 no.6
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• pp.455-463
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• 2021

This study investigated the biomass content of fluff type SRF(Solid refuse fuel) operated in B city according to the physical composition. As a result of analyzing the physical composition of SRF, it was investigated that papers 25.2%, fiber 15.1%, vinyl·plastics 42.6%, woods 9.4%, rubbers 1.5%, diapers 3.2% and incombustibles 3.0%. The average of ash and combustible content of SRF was 10.5% and 89.5%, and the higher the proportion of paper and wood, the lower proportion of ash. In addition, the biomass of SRF is 24.9%~58.0%, with an average of 42.6%.

• Journal of the Korean Wood Science and Technology
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• v.43 no.3
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• pp.390-399
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• 2015

This study was conducted to examine the potential use of coffee waste (CW) as an adsorbent of HCHO by adding into fiberboard. For the purpose, CW treated with various temperatures and times was placed in desiccator with a HCHO solution and then the HCHO adsorptivity of the CW was measured by acetylacetone (ATAN) and DNPH methods. In the results of ATAN analysis, amount of HCHO adsorbed in distilled water was the lowest on the non-treated CW and steadily increased to $100^{\circ}C$-treated temperature. However, over the $100^{\circ}C$, heating temperature (H-Temp) had not an effect on the HCHO adsorptivity of CW. Amount of HCHO adsorbed on CW itself was the highest at $100^{\circ}C$ H-Temp, following by $50^{\circ}C$, $150^{\circ}C$, $0^{\circ}C$, $250^{\circ}C$ and $200^{\circ}C$. For the HCHO adsorptivity of CW measured by DNPH methods, HCHO was not detected in the distilled water stirred with non-treated CW, but detected from the distilled water stirred with heating-treated CW. The content was the highest in the CW heating-treated at $100^{\circ}C$ for 10 min. In addition, HCHO adsorbed on CW itself increased to the H-Temp of $100^{\circ}C$ regardless of heating time, but decreased or reduced greatly degree of the increase over $100^{\circ}C$ H-Temp. In conclusion, optimal heating conditions of CW for the HCHO adsorption might be H-Temp between 100 and $150^{\circ}C$ with 10 min according as technical and economical reasons. Heating-treated CW manufactured with above the conditions can be used as an adsorbent in conventional fiberboard production for reducing HCHO emssion.