• Nuclear Engineering and Technology
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• 제31권6호
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• pp.83-100
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• 1999

As disposal packaging concepts of spent fuels generated from the domestic NPP, two types, one is to package PWR and CANDU spent fuels in different containers and the other is to package them together, were proposed. The configuration of the containers and the layout of underground repository, such as the container spacing and the deposition tunnel spacing, were developed. The layout of underground repository satisfies the thermal constraint of the bentonite buffer surrounding disposal container, which should be lower than $100^{\circ}C$ in order to keep the physical and chemical properties of bentonite From the spent fuel packaging concepts and container emplacement methods, seven options were developed. With a typical pair-wise comparison methods, AHP, the most promising disposal concept was selected based on the technology Point of view.

• 펄프종이기술
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• 제43권1호
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• pp.65-73
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• 2011

The fibrous raw materials in packaging-grade paper production in Korea were mainly obtained from waste paper. The use of recycled paper has both positive and negative impacts in papermaking process. The primary positive impacts are the environmental protection and manufacturing cost reduction, and the negative impacts are the quality reduction in paper quality and the accumulation of heavy metals and other pollutants in wet- and dry-end process. This study was carried out to consider the optimum acid decomposition system with the highest recovery rate for the analysis of heavy metals in packaging-grade paper. The open digestion system using Kjeldahl apparatus and the closed digestion system using microwave oven for decomposing the organic materials in paper were compared. In both open and closed digestion method, the combination of nitric acid, hydrochloric acid and hydrogen peroxide showed higher recovery rate than using only nitric acid alone because the presence of Cl- ions in hydrochloric acid stabilizes ligand formation with metal ions. KOCC was observed to have the highest heavy metal content among the recycled paper samples. The heavy metal contents decomposed with the closed digestion system were relatively higher than with open digestion system.

• 한국식품저장유통학회지
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• 제30권4호
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• pp.549-561
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• 2023

Recently, consumers have gained an interest in natural and minimally processed foods, inciting the food industry to consider using of natural products as preservatives. Strawberries are a widely consumed fruit but are also highly perishable. Therefore, in this study, the physicochemical properties of strawberries (Fragaria×ananassa) were evaluated after a 12-h treatment with lemon essential oil (Citrus×limon) or cinnamon essential oil (Cinnamomum cassia) vapor during storage at 22℃ for 4 days in an accelerated shelf-life study and 4℃ for 18 days in a validation study. Weight loss was blunted in fruit treated with oil vapor during the first days of storage (p<0.05). Lemon essential oil delayed fruit darkening (p<0.05) but reduced the firmness of strawberries (p<0.05). Strawberries treated with cinnamon essential oil had a higher concentration of reducing sugars (p<0.05), and a decrease of 16.7% visible decay, although the difference was insignificant. Oil vapor treatment did not alter the pH, organic acid content, or soluble solid content during storage compared to the control. Since lemon and cinnamon essential oils have well-documented antimicrobial properties, they may be suitable for the natural preservation of fruit. This study provides new information on using essential oil vapor treatment to preserve fruits, and potentially decrease fruit loss and waste.

• Industrial Engineering and Management Systems
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• 제10권2호
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• pp.123-127
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• 2011

Nowadays, green purchasing, stop global warming, love the mother earth, and others that related to environment become hot issues. Manufactures industries tend to more active and responsive to those issues by adopting green strategies or program like Environmentally Conscious Manufacturing (ECM). In this article, an electronic company had applied 12 ECM Program and tries to choose one of those programs using 6 criteria, such as total cost involved, quality, recyclable material, process waste reduction, packaging waste reduction, and regulation compliance. By using multi-criteria decision making model, i.e. Analytical Hierarchy Process (AHP), Technique for Order Preference by Similarity to Ideal Solution (TOPSIS), and Modified TOPSIS methods, the ECM Program 9 (Open pit) is the best option.

• 대한안전경영과학회지
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• 제21권4호
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• pp.81-89
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• 2019

Need to make efforts to reduce greenhouse gas emissions in order to slow global warming is globally recognized and also appealing to the United Nations. The main cause of greenhouse gases is carbon dioxide, and the nation has 23.9 percent of its total emissions in the transportation sector. It was also reported that 61.56 percent of living waste is being recycled, suggesting that environmentally friendly logistics activities should proceed with efforts on goods and services at each stage of distribution. In this study, we conducted a survey of green logistics activities that were environmentally friendly by businesses, divided into management, water/delivery and packaging waste, and identified the status and level of each business sector. As a result, data was collected from 36 manufacturing companies, 28 distribution businesses, and 40 logistics businesses, all of which were 104 companies, and based on the analysis results, a measure for environmentally friendly logistics activities was proposed.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 가을학술발표대회논문집
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• pp.81-82
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• 2023

As part of a study to utilize recycled aggregates in the construction industry, this paper attempted to examine recycled aggregates from waste concrete, a construction waste, and red mud, an industrial by-product, by applying them to earthen concrete packaging materials. As a result, it was found to satisfy the compressive strength standards for parking lots of SPS-KSCICO-001-2006, and its applicability in the construction industry was judged.

• 한국산학기술학회논문지
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• 제9권1호
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• pp.176-181
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• 2008

식품 포장재로 사용되는 PP/EVOH/PP 다층 복합필름 scrap의 재활용 가능성을 연구하였다. 본 연구는 PP/EVOH scrap에 두 종류의 상용화제를 첨가하여 열적 특성과 기계적 특성을 조사하였다. 열적 특성은 융융거동을, 그리고 기계적 특성으로는 인장강도, 파단신율, 인장탄성율 등의 특성을 상용화제의 종류와 조성비 변화에 따라 조사하였다. 이들 연구로부터 상용화제인 Minanto-s와 GMS에 대해서 모두 0.5wt. %이상의 조성에서 혼합재질인 PP/EVOH scrap의 상용성을 갖게 함을 알 수 있었다.

• 한국포장학회지
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• 제29권1호
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• pp.15-25
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• 2023

본 연구는 식품의 저장 수명을 연장하기 위하여 식품 포장재로 활용되는 항미생물 활성 액티브 패키징의 최신 연구 동향을 파악하기 위하여 수행되었다. 특히, 최근 5년간 발표된 항미생물 활성 필름 및 코팅 연구를 분석하였으며, 연구에서 활용한 고분자 소재와 항미생물 소재를 정리하였다. COVID-19 대유행으로 인한 플라스틱 오염 문제가 격화되면서 식품 포장재의 고분자 소재로는 바이오 기반의 분해성 소재가 주목받고 있으며, 분해성 소재에 항미생물 화합물을 혼입하여 기능적 특성을 부가한 액티브 필름 및 코팅 제제에 관한 연구가 활발하게 수행되었다. 항균 액티브 패키징 개발에 주요하게 활용된 소재는 정유, 추출물 등의 유기 화합물, TiO₂, ZnO, AgNPs 등의 무기 화합물과 박테리오파지 및 엔도라이신 등의 생물 소재로 관찰되었다. 또한 주요하게 사용된 항진균 소재는 정유 등의 천연 화합물, 무기산(염) 및 유기산(염)을 포함하는 합성 유기계 화합물과 금속 및 나노입자 등의 무기화합물로 분류되었다. 한편, 항바이러스 소재로는 GTE, GSE 및 AITC 등의 유기 화합물 관련 연구만이 주로 관찰되었다. 동향 분석 결과, 항균 및 항진균 액티브 패키징의 효능 평가는 활발하게 수행되어 왔으나, 이들의 물리 화학적 특성 개선 연구가 미흡하여 산업화로 이어지는 것에 한계가 있어, 이에 대한 추가 연구가 필요하다고 판단된다. 또한 분해성 항바이러스 액티브 패키징에 대한 산업체에서의 수요가 증가할 것으로 예상되므로, 항바이러스 소재 발굴 및 패키징 적용을 위한 활발한 노력이 요구된다.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 1998년도 봄 학술발표회 논문집
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• pp.63-66
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• 1998

The steady growth in the use of plastic materials in packaging applications has caused an increasing concern about the environment and the problem of solid waste disposal. Therefore, the recycling of plastics is the very important problem, which must be solved technically and environmentally [1]. It is technically feasible to recycle, recover and reuse all of the plastics discarded, but economics limit the degree of recycling at this time.(omitted)

• 핵의학기술
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• 제26권1호
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• pp.15-26
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• 2022

최근 한국원자력안전기술원의 방사성폐기물의 자체처분을 심사하는 과정에서 많은 보완을 거치게 되고, 기관별로 자체처분 최종 승인 과정에 도달하는데 어려움을 겪고 있다. 이에 따라 최근 보완사항의 사례를 분석하여 자체처분의 처리 효율을 높이고 안전성을 강화하고자 한다. 2018년부터 2021년까지 20개 기관별 방사성폐기물 자체처분 절차서 및 계획서 작성 시 보완 요청된 사항들을 비교 검토 하였다. 이와 관련하여 원자력안전법 규정을 기준으로 심사 처리기간 산출 및 심사 과정에서 발생한 보완요청 사항들을 정리하여 방사성폐기물 자체처분 시 서류에 필요한 세부 작성안들을 도출하였다. 한국원자력안전기술원의 대표적인 보완요청사항들은 방사성폐기물의 종류 및 핵종별 보관기간 산출, 포장 용기 등에 대한 내용, RASIS 보고 방법, 자체처분 예정 저장 방법 최종 처분업체 확인, 폐필터의 보관기간 산출, 방사성마크 부착 등이 중요하게 부각되고 있다. 최신 보완사항들을 반영한 가이드라인의 기대효과로는 서류 작성에 필요한 시간단축 및 업무처리 효율성의 증대와 방사성폐기물 보관실의 저장효율성 향상 및 경제적 비용절감이 있었다. 이 연구에서 제시한 방사성폐기물 자체처분 가이드라인을 현장에 적용한다면, 고충을 겪고 있는 관계자들의 업무효율 향상에 도움이 될 것으로 사료 된다.