• Resources Recycling
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• v.9 no.1
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• pp.63-69
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• 2000

Ferromanganese dust is an oxide substance of Mn. If imprities are removed and oxidation degree is controlled, the dust can be recycled for soft ferrite materials. The ferromanganese dust contained about 7 kinds of impurities, expecially about 9000 ppm of $SiO_2$ contents of the ferromanganese dust from 9000 ppm to under 500 ppm by fritting method. The $SiO_2$ in ferromanganese dust can be converted into water soluble compounds by alkali fritting and removed by water leaching. KOH and NaOH were used. The most effective conditions to get rid of $SiO_2$ from the dust are that the weight ratio of alkali to ferromanganese dust is 1.75 and fritting is run at $550^{\circ}C$ for 1 hour.

• Water for future
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• v.43 no.3
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• pp.16-22
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• 2010

• Journal of the Korean Recycled Construction Resources Institute
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• v.4 no.1
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• pp.101-109
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• 2009

This CW(Construction wastes) are increasing as construction industry is growing, so many countries make efforts to recycle CW. Korea also made a stipulation for recycling CW. But the main content of this stipulation is for using recycled aggregates. Advanced countries try to increase reuse rate of not only recycled aggregate but also other kinds of wastes. So they are adopting SDM(separating dismantlement) method and we are also planning to make the system for SDM. This study is about SDM analysis through construction field investigation and difference analysis between SDM and UDM comparing predictive amount by UDM with real generated amount by SDM. First, the generated amount of construction wastes by SDM is more than estimated amount by UDM, and mixed waste was specially reduced more than UDM. The warehouse is easier than the office building to applicate SDM. But still there is no manual for SDM in the site, so establishment of SDM is demanded.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.913-916
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• 2003

인터넷 이용 확산에 따라 학교 현장에서 교과의 특성이나 상황에 따라 학생들이 작성한 과제물을 홈페이지 자료실, E-mail, FTP 등을 이용하여 제출 받고 평가하는 사례가 늘어나고 있다. 이는 과제물의 공개, 과제물 수용 용량의 부족 현상, 평가에 따르는 불편함, 과제물을 또 다른 정보로 재활용 할 수 없는 문제 등을 발생시킨다. 본 논문에서는 XML에 기반을 둔 문제은행형 과제 제출 시스템을 설계함으로써 학생들의 학습 성취도를 향상시키고, 교사의 과제물 평가의 불편함을 해소하며, 제출된 과제물들을 유용한 정보로 재사용 하는 방법을 제시한다.

• Journal of Environmental Policy
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• v.14 no.2
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• pp.133-148
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• 2015

The number of used oil refining companies has been increased and it causes shortage of the volume of used oil per recycling company. In addition, the number of used oil collecting companies has been increased and it caused excessive competition among companies with excessive costs. Companies use not only proper used oil but also low quality used oil because of shortage of supply. It is the reason of environmental pollution. Also excessive competition brings high cost of refined oil and it becomes a burden on the consumer. Therefore, the recycling improvement plans of used oil is needed because of these causes. First of all, importing used oil from the developed countries of OECD is the one of solution to secure a used oil supply. However, imported used oil should meet the international quality standards and it is examined twice by international authority institute such as K-petro in both exporting and importing countries. Second, the cost would be reduced with the relaxation on regulations of used oil refinement. However, regulation to sediment and water should be separated. Sediment should be kept within 2% and water should be kept within 5%. It is the way to relax the regulations of used oil refinement with preventing environmental pollutions. Finally, the standard of used oil for heater should be regulated strictly. To prevent pollutions, used oil for heater is limited to high quality waste lubricating oil. Also the air pollution prevention device has to be installed on heater.

• The Journal of the Korea Contents Association
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• v.12 no.8
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• pp.411-419
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• 2012

In case that R&D results from R&D projects are well managed and archived, the research institutes can transfer the valuable technologies related to R&D results with some costs to corporations. However, it is still difficult to maintain and reuse R&D results because they are managed by each person or each department and not integrated between R&D results. Therefore, the government should undertake to manage R&D results overall by collecting meta data and distribute analyzed information from meta data. Each researching institute also makes an efforts to manage R&D results focusing on their reusing. For this purpose, in this paper, we present a process to manage R&D results; insert meta data of R&D results to the system, upload files of R&D results to the database of the system, inquire, and use meta data of R&D results. Based on the process, we design a system architecture for managing R&D results. In addition, it should be mainly considered to design a global schema for integrating R&D results into one database. The system shows detailed information on R&D results and provides R&D results conveniently to users. We expect that we may reduce the cost of reusing R&D results and improve the quality of R&D results with designing efficiently a process and a global schema of R&D result management system.

• Feed Journal
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• v.2 no.5
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• pp.58-65
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• 2004

동물성사료는 가축의 도살과 축산물의 부위선별 작업과정에서 식용으로 사용되지 않은 것(동물성잔재물)을 랜더링 처리하면 동물성단백질사료로서 전환이 가능하여 사료원료로 이용되어 왔다. 그러나 최근 동물성잔재물을 이용한 재활용 물질인 육골분을 소에 급여하여 소해면상뇌증(BSE)과 관련성으로 영국 및 유럽 등 여러 국가에서 반추가축에 급여중단 등 가축의 사료로서 이용이 크게 제한되어 있을 뿐만 아니라 특정의 동물성잔재물은 재활용을 금지하고, 소각 후 매립하고 있다. (중략)

• Proceedings of the KAIS Fall Conference
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• 2003.06a
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• pp.155-157
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• 2003

정부는 2005년까지 모든 지방자치단체가 음식물 쓰레기 재활용 시설을 완료하도록 법제화한 바 있다. 기존에 시설된 음식물 재활용 설비는 염분을 적절히 제거하지 못하여 퇴비로 사용할 경우 농작물에 해가 되는 경우가 많았고, 협잡물 제거가 되지 않아 사료로 사용할 경우 가축이 집단 폐사하는 경우까지 있었다. 또한 음식물 쓰레기를 처리할 때 나오는 악취는 새로운 공해가 되었다. 본 논문에서는 음식물 쓰레기를 처리할 때 생기는 제반 문제점을 해결할 수 있는 방안을 제시한다.

• Industry Promotion Research
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• v.1 no.1
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• pp.137-142
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• 2016

This study verified the effect of the perception of water reuse on water reuse practice intention. The study results showed that the perception of water reuse practice necessity, the effect of water recycling toilet(p<.01), compulsory installation of water recycling product in public institution, expansion of compulsory installation of water recycling product, the law of water reuse promotion and support(p<.05). Also, monthly household income, occupation and monthly water rate significantly affected the between-group differences of water reuse practice intention. This study provided implications for operating water reuse policy by analyzing the effect of the perception of water reuse on water reuse practice intention to enhance water reuse practice.

• The Korea Swine Journal
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• v.13 no.2 s.138
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• pp.38-39
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• 1991

국내 양돈업계는 축산물 수급정책의 부재와 가격안정제도의 불균형으로 주기적으로 닥쳐오는 가격폭락 영향과 축산물 수입개방, 축산분뇨 처리의 애로,인력난 등르로'88~'89 2년간 축산농가중2/3가 도산하므로서 생산기반이 무너져 가고 있는 현상을 대변하고 있다. 따라서 정부는 정업농 보호정책과 계열화사업 지원 시설자동화에 장기처리로 과감히 투.융자를 하는 한편,축산분뇨의 자원화와 재활용에 정책적배려를 해야 하겠다