• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2003.05a
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• pp.633-638
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• 2003

현재, 각종 산업공정에서 발생하는 부생가스, 도시폐기물, 폐플라스틱, 바이오매스 등의 미활용 에너지원이나 석탄, 폐유 등을 가스화 혹은 열분해 하여 합성가스를 발생시켜 재활용하려는 연구가 활발히 진행하고 있다. 합성가스는 공업적으로 중요한 에너지원 및 화합물을 제조하는 가장 기초적인 반응가스인데, 합성가스를 제조하는 방법 중 가장 잘 알려진 천연가스 개질반응 이외에도 열분해/가스화 반응공정을 통해 제조되기도 한다.(중략)

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2003.05a
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• pp.509-512
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• 2003

폐기물을 대상으로 하는 가스화공정은 환경문제와 에너지효율 문제에 동시에 접근할 수 있는 공정으로서 기존의 연소반응에 근거한 공정들을 점차 대체할 것으로 예측되고 있으며 많은 연구와 기술개발이 현재 진행되고 있다. 가스화용융 기술의 장점은 고유황, 고회분의 저급 석탄, 정유공장 부산물 및 도시폐기물까지도 강화되는 환경규제치를 만족하면서 깨끗한 에너지원으로 활용할 수 있다는 점이며, 발생된 고열량 생성가스의 정제를 통해서 연료로서 재활용이 가능하다는 것이다.(중략)

• Applied Chemistry for Engineering
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• v.21 no.6
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• pp.616-620
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• 2010

This study was performed to recycle Propylene Glycol Monomethyl Ether Acetate (PGMEA) from Liquid Crystal Display (LCD) industry emission as a waste organic solvent by using a multistage distillation column and tried to decide optimum reflux ratio. From the final experiment result, it was confirmed ; in case the sample A, the PGMEA purity is more than 98% and the moisture is less than 0.05%, on the other hand, in case the sample B, the PGMEA purity is more than 95% when the reflux ratio is 6 and the moisture is less than 0.01% (Refer to Table 1 for the contents of sample A and B). These values means fine level which can be adapted in the LCD manufacture, requiring more than 90% common purity of recycling level.

• Resources Recycling
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• v.24 no.1
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• pp.51-57
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• 2015

The glass has been used continuously since ancient period up to the present day. The smart glass industry in which the advanced technology is added is developing. The life cycle of the smart glass is faster than traditional glass. Therefore, the basic and core technology development is needed for recycling of smart glass according to the replace period. Among the smart glass the recycling development of the automobile industry is the most needed areas. At the end of life of the automobile, the amount of the smart glass is expected to be over 23,000 tons per year. In this paper, the current status of domestic Korean automobile glass has been comprehensively investigated. Finally, Korean domestic smart glass recycling technology is also briefly introduced.

• Applied Chemistry for Engineering
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• v.23 no.2
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• pp.195-203
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• 2012

Recycling method of waste LCD glass is the essential process for developing the total recycling process of LCD pannel. Pulverizing of LCD glass, determination of proper carbonacious foaming agent, the properties of residue from the recovery of valuable materials through an acid leaching process and the feasibility for the foaming of the residue obtained from leaching for indium and tin recovery were investigated for the developing of recycling method of waste LCD glass as industrial feed materials, such as heat insulation materials, sound absorbing materials, carrier of water treatment. Waste LCD glass could be pulverized finely for foaming process. Natural graphite was proper agent for foaming of the residue and the foaming technology of LCD glass would be effective recycling alternatives.

• Resources Recycling
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• v.24 no.1
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• pp.58-65
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• 2015

Although Korea is a top market sharing and world leading producer and developer of flat panel display devices, relevant recycling technology is not up to her prestigious status. Besides, most of the waste glass arising from flat panel displays is currently land-filled. The present paper mainly reviews on development of recycling systems for waste TFT-LCD glass from end-of-life LCD TVs and monitors and TFT-LCD process waste of crushed glass particles with target end uses of raw material for high strength concrete pile and glass fibers, respectively. Waste LCD glass was recycled to fabricate ingredients for high strength concrete piles with enhanced physical properties and spherical foam products. The waste LCD glass recycling technology is already developed to fabricate long and short fibers at commercial level. In view of these, future R & D on waste LCD glass materials is to be directed toward implementation of commercial materials recycling system therefrom.

• Journal of the Korea institute for structural maintenance and inspection
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• v.23 no.1
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• pp.163-170
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• 2019

In recent years, various types of industrial wastes are rapidly increasing with the development of high-tech industries. Specially, high-density waste glass of CRT TV containing heavy metals are buried or disposed of due to reprocessing costs and environmental pollution problems. Thus, more basic research is needed to recycle waste such as CRT waste glass such. In this study, the fundamental properties and radiation shielding performance of mortar specimens substituted CRT waste glass as a fine aggregate were analyzed and their application to shielding materials was evaluated. According to the results, the bulk density of mortar specimen replaced with CRT waste glass was increased and the compressive strength and flexural strength were decreased. Meanwhile, the CRT waste glass substitute specimen containing a large amount of lead component showed a higher shielding performance than the general mortar specimen. Especially, the linear attenuation coefficient of CRT waste glass in $122KeV{\cdot}^{57}Co$ of the low energy field was 2.5 times higher than that of normal specimen.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.24 no.2
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• pp.65-71
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• 2018

Paper packs, glass bottles, metal cans, and plastic materials are classified according to packaging material recycling groups that are Extended Producer Responsibility (EPR). In the case of waste paper pack, the compressed cartons are dissociated to separate polyethylene films and other foreign substance, and then these are washed, pulverized and dried to produce toilet paper. Glass bottle for recycling is provided to the bottle manufacturers after the process of collecting the waste glass bottle, removing the foreign substance, sorting by color, crushing, raw materializing process. Waste glass recycling technology of Korea is largely manual, except for removal of metal components and low specific gravity materials. Metal can is classified into iron and aluminum cans through an automatic sorting machine, compressed, and reproduced as iron and aluminum through a blast furnace. In the case of composite plastic material, the selected compressed product is crushed and then recycled through melt molding and refined products are produced through solid fuel manufacturing steps through emulsification and compression molding through pyrolysis. In the recycling process of paper packs, glass bottles, metal cans, and plastic materials, the influx of recycled materials and other substances interferes with the recycling process and increases the recycling cost and time. Therefore, the government needs to improve the legal system which is necessary to use materials and structure that are easy to recycle from the design stage of products or packaging materials.

• 한국신재생에너지학회:학술대회논문집
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• 2007.11a
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• pp.666-668
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• 2007

에너지 사용량의 증가와 국제적인 환경 규제에 대응하기 위하여 환경친화적인 연료의 개발이 시급한 가운데 재생가능한 동식물성 유지로부터 생산되는 바이오 디젤에 대한 연구가 활발히 진행되고 있다. 특히 자원 재활용 및 에너지 생산관점에서 폐식용유로부터 바이오디젤 원료로 사용하는 연구가 활발히 진행되어 왔다. 이러한 폐식용유를 이용한 바이오디젤 생산에서 폐식용유내 함유된 유리지방산 및 수분에 의해 효율적인 전이에스테르화 반응이 어렵기 때문에 이를 전처리 단계에서 제거되어야 한다. 본 연구에서는 폐식용유내 유리지방산을 효과적으로 제거하기 위하여 회분식 반응기에서 MFI 제올라이트 촉매를 이용하여 Si/Al 몰비에 따른 산세기 및 산량의 변화에 따른 유리지방산 제거 특성을 조사해 보았다.

• Journal of the Korean Ceramic Society
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• v.42 no.3 s.274
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• pp.193-197
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• 2005

Wall and floor tiles were fabricated by a dry pressing method using waste glass and clay. The physical properties of the tiles such as absorption, bulk density, porosity, compressive strength, and abrasion loss are investigated with the firing temperature and glass contents. The physical properties are improved with increasing the firing temperature and glass contents. The composition containing the glass of $70 wt%$ and fired at $1050^{\circ}C$ for 2 h has the good properties. The optimal properties obtained in the tiles are the water absorprion of about $0.9\%$, the bulk density of about $2.3\;g/cm^3$, the apparent porosity of about $2.1 \%$, the compressive strength of about 210 MPa, and the abrasion loss of about 0.022 g, when the composition containing the glass of $70\;wt\%$ is fired at $1050^{\circ}C$. The physical proper1ies of tiles fabricated were enhanced compared to the commercial clay tiles, due to easy melting and densification of glassy phase during the firing process.