• 자원리싸이클링
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• 제16권1호
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• pp.54-58
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• 2007

실제 사진폐액에서 은의 회수를 위한 연속순환식 환원 공정을 적용하여 전해시간 및 두 전극간의 전압 차, 농도에 따른 영향을 검토하였다. 희석된 사진폐액에서의 은의 전해효율은 적용전압이 증가하면서 효율이 증가하다가 6V 정도에서 최고의 효율을 보였다. 그러나 그 이상 전압이 증가할수록 은의 회수율은 낮아지는 경향을 보였다. 희석되지 않은 원 사진폐액의 경우에서는 실험조건 하, 전해반응 시 적용 전압이 낮아질수록 효율을 높일 수 있음을 확인하였다.

• 한국의류학회지
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• 제34권3호
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• pp.492-507
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• 2010

The eco-design in modem fashion is mixed with a well-being trend that combines functionality and ethics with technology to suggest a new fashion style for the $21^{st}$ century. This study analyzes the colors of the eco-design in the current fashion trends and identifies the eco-friendly color images that suggest directions for eco-design. The results of this study are as follows. First, the eco-design is an ethical design concept of the ecological value. It can be classified into the functional efficiency in the multi-functionality the sustainability, the recycling capability, the trends for health and craftsmanship, according to various suggestions by eco-design related theorists. Second, the eco-colors shown in the fashion trend follow the order of YR, R, Y, N, and B, with the order of the pale, grayish, light grayish and dull tones. Third, the hue trends of eco-colors each eco-type are focused on R, YR, and Y. With regards to the tones, the functional efficiency, the multi-functional capability, and the sustainability are shown in the neutral tone, while the recycling capability is shown in the grayish tone and the trends pursuing health and craftsmanship are shown in the pale tone.

• 한국실내디자인학회논문집
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• 제16권2호
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• pp.181-191
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• 2007

This study attempted to analyze the characteristics of interior design of the apartment units of Model-houses in terms of ecological aspects. 9 companies that possessed their model houses among the construction companies in Busan area as of August 2006 were selected. 20 units in the model houses of these companies were visited and analyzed. Through literature review, the guideline for the environmentally-friendly residential design was designed and developed to the checklists. The data collected were analyzed to find out the ecological characteristics of the interior space of apartment units. The findings are the followings. First, energy efficiency was properly considered in terms of natural lighting and natural ventilation. Second, in sustainability, the materials for floors and walls could not be reused even though they were environmentally-friendly. Water system needs more improvement for sustainable development including grey-water and rain recycling system. Third, interior greening should be applied more for better environment both physically and emotionally. It is expected that future housing will be more high-risen and densely-populated apartment spaces. Therefore, an approach to new ecological aspects including an emphasis on interior greening, use of eco-materials and adhesives, water recycling and flexibility of the spatial configuration should be made for the next generation.

• KIEAE Journal
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• 제15권2호
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• pp.45-52
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• 2015

Purpose: Currently, since the energy consumption of apartment buildings is on the rise, it is necessary to reduce the total amount of the energy through the survey and analysis of energy consumption data. Although various studies for energy efficiency have been conducted, studies are more focused on the measurement of energy by using analysis tools. In addition, the studies are sufficient to analyze real data of the city gas in apartment buildings. Therefore, the objective of this study is to identify the property of annual and $1m^2$ city gas amount according to the exclusive dwelling area. Method: To achieve the objective, this study used the statistics such as descriptive, correlation, and analysis of variance (ANOVA) analysis. Result: As a result, there is positive relationship between the annual average of city gas and the exclusive dwelling area. However, in the case of $1m^2$ city gas amount, a negative relationship is mored. In the future, the findings of this study can be applied to develop the prediction model of the city gas consumption and implement it as basic data for energy efficiency of apartment buildings of future.

• 유기물자원화
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• 제21권4호
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• pp.82-87
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• 2013

게껍질에 흡착된 은 이온의 탈착과 재생특성에 관한 연구가 최적의 탈착제로서 선정된 질산을 이용하여 수행되어졌다. 1.0M의 질산농도에서 은 이온의 탈착율은 96%로서 가장 높았다. 또한, 투입된 흡착제의 양과 탈착제의 부피로서 정의되는 S/L비가 1.0보다 작을 때에는 대부분의 은 이온이 탈착되어졌으며 대부분의 탈착 공정은 60분 내에 일어났다. 그리고 재사용된 게껍질을 흡착제로 다시 이용하였을 때 2회까지는 92%의 은 이온 탈착율을 유지하였다.

• 한국진공학회지
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• 제16권5호
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• pp.383-387
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• 2007

본 논문에서는 KSTAR 토카막 진공용기의 세정을 위한 방전세정 시스템의 설계에 대해 기술하였다. 먼저 방전세정효율에 영향을 주는 매개변수들에 대해 논의하였으며. 실제 설계에서 직류방전 보다 낮은 압력에서 방전이 시작되고 유지되며 따라서 세정효율이 높은 RG 방전(RF-assisted DC glow discharge) 방법을 채택하였다. 그리고 방전세정의 균일성을 위해 두 개의 방전 전극을 진공용기의 진단포트(A,I-port)에 설치하였다. 설계된 방전세정 시스템은 KSTAR 진공용기 내벽 세정뿐만 아니라 제1벽의 연료재순환(fuel recycling)이나 보론화 처리(boronization)등의 연구에도 응용될 수 있다.

• 상하수도학회지
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• 제25권2호
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• pp.257-264
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• 2011

Recycling of industrial products as the stabilizers can be proper handling of industrial products and has positive side in terms of recycling of wastes. In this study, the final aims were to evaluate the usability as stabilizer of Bio-solids which was generated from contaminated soil with heavy metals after primary process and to compare the treatment efficiency with slag being currently applied in many existing sites. Soluble and exchangeable forms have closely related to pollution of groundwater and plant growth and they can be used to determine the effect of the stabilization efficiency. Slag and Bio-solids were tested to investigate the capacity of stabilizing arsenic. Slag treatment process 4 (PS-ball 5%) showed higher leachate concentration rather to 0.84% compared to treatment 1 (blank) based on an average of 0.63%. The other hand treatment 4 (Bio-solids 5%) showed the lowest soluble and exchangeable forms to 0.57% when Bio-solids was applied to stabilize arsenic. Thus, the leaching of arsenic will be more reduced if the Bio-solids are used as stabilizer in stead of slag which is being currently used in many fields.

• 한국양식학회지
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• 제6권4호
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• pp.311-321
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• 1993

Ammonia accumulation is regarded as the limiting factor of the first priority in water qualities of aquatic culture systems. Nitrification efficiency and characteristics in seawater were evaluated using Rotating Biological Contactor (RBC) process as a part of the recycling water treatment facilities for marine fish culture system. Ammonia removal efficiency regarded 99.7 to $83.7\%$ at the ammonia surface loading rates of 48 to $393 mg/m^2$ -day. RBC process was able to withstand to the fluctuation of influent ammonia concentrations and loading and produced the stable effluent. The mathematical model on the fixed-film biological reactor developed by Kornegay seemed to be suitable to RBC process kinetic evaluation for the recycling water treatment of the marine fish culture system. Area capacity constant (P) and half-velocity constant (Ks) in the model were 0.188g/m^2$-day and 1.25mg/l, respectively.

• 유기물자원화
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• 제22권2호
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• pp.44-49
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• 2014

본 연구는 원두커피찌꺼기를 이용하여 중금속제거 특성을 알아보고자 납, 크롬, 카드뮴을 포함한 인조폐수에 미리 세척과 건조를 행한 원두커피찌꺼기를 흡착제로 사용하여 농도와 pH를 변화시키면서 실험하였다. 실험결과 모든 중금속은 30분 내에 대부분 흡착되었고, pH 변화에 따라 최대 80% 제거효율을 보였다. 또한 크롬은 pH가 증가함에 따라 제거율은 감소하는 것으로 나타났다. 본 연구 결과 원두커피찌꺼기는 중금속제거에 있어서 매우 효과적인 것으로 나타났으며 폐기물 재활용과 환경오염 방지 효과와 함께 경제성 있는 흡착제로 사용이 가능할 것으로 판단되어진다.

• 자원리싸이클링
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• 제24권6호
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• pp.54-60
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• 2015

본 연구의 목표는 1 ton/day용량의 연속 감압식 간접열 방식의 벨트형 건조장치를 개발하여 건조효율을 70% 이상 향상시키며 기존 건조기 장치에 비하여 약 50% 이상의 건조기 크기를 축소시켜 장치의 소형, 경량화를 이루고 그로 인한 설치비 및 운전비 절감효과를 20%이상 향상시키는 것이다. 현재는 기존의 간접열 건조장치를 분석하여 구조적인 개선점을 도출하였으며 기초실험을 통하여 우수한 건조성능을 확인하였다. 또한 감압조건에서의 실험을 수행하여 열전달 및 건조특성이 향상되는 것을 확인하였다.