• 상하수도학회지
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• 제24권4호
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• pp.369-376
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• 2010

The purpose of this study is to reprocess Waste-LCD(Liquid Crystal Display), to widely increase specific surface-area by foaming agent in the process of reprocessing and to use as a substrate of water treatment which is increased the ability of biological treatment, as well as to control non-point source pollutants produced by surface run off during rainfall with using this substrate, and to improve water quality of public watershed as developing substrate for water treatment to be able to purify second treated water which is exhausted at the wastewater treatment plant. The average removal efficiency of Waste-LCD that using the foaming technology was SS 71.2%, BOD 55.7%, COD 58.4%, T-N 29.5% and T-P was 50.3%. Almost Media, early stage showed low removal efficiency of SS and BOD. However, it became high when the microorganism adhered the Media. The variation of SS removal efficiency was high by inflow concentration of SS. The reason for the Media 4 showed high SS removal efficiency is that it has wide specific surface-area, and also it has a pore. All in all, it shows floating matter treatment ability not only inside but it also works outside of the substrate.

• 한국초전도ㆍ저온공학회논문지
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• 제23권3호
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• pp.37-40
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• 2021

Nickel (Ni) is a kind of the rare earth resources. Since Ni-containing waste is drained after several plating operations in the factories, the effective recycling technique has been expected to be introduced. An actual magnetic separation technique using HTS bulk magnet generating the strong magnetic field has succeeded in collecting the paramagnetic slurry containing Ni-sulphate coarse crystals which were fabricated from the Ni-plating waste. The Ni compound in the collected slurry was identified as NiSO₄/6H₂O, showing slight differences in the particle size and magnetic susceptibility between the samples attracted and not-attract to the magnetic pole. This preferential extraction suggests us a novel recycling method of Ni resource because the compound is capable of recycling back to the plating processes as a raw material.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2006년도 학술논문요약집
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• pp.29-29
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• 2006

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2011년도 추계학술논문요약집
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• pp.321-322
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• 2011

• 한국산학기술학회논문지
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• 제11권2호
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• pp.614-619
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• 2010

수산시장이나 어항에서 발생하는 수산폐기물을 수거하여 처리하는 과정은 긴 시간과 불결한 처리로 악취발생 및 비위생적인 면이 많아 민원의 대상이 되어 왔다. 이것을 수거하여 완전 처리하는 기술을 적용하면 비위생에 대한 민원이 없어지고 자원재활용의 비율을 확실히 높일 수 있다. 본 논문에서는 지방과 단백질이 풍부한 수산폐기물을 증류건조시켜, 고형물은 가축사료로 활용하고 응축수는 탈취제나 하수처리장의 외부탄소원으로 활용하는 완전 재활용공법을 소개한다.

• 자원리싸이클링
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• 제25권2호
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• pp.42-48
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• 2016

국내 전자 디스플레이 산업의 고도화된 기술과 평판 디스플레이 제품의 글로벌 점유율은 세계 최고 수준이지만 사용 후 버려지는 폐 디스플레이 제품에 대한 재활용 기술 및 재활용 현황은 아직 글로벌 리더 수준에는 못 미치고 있다. 평판 디스플레이 제품의 짧은 순환주기를 고려할 때, 폐 디스플레이 제품의 재자원화는 전 세계적으로 경제와 환경측면에서 이슈가 되고 있다. 본 연구는 향후 폐 LCD (Liquid Crystal Display) 제품 재활용 플랜트에서 활용할 수 있는 재자원화 데이터베이스를 구축하기 위한 기초연구로 40인치와 42인치 크기의 폐 LCD 제품의 분리해체 방법과 해체 모듈과 부품에서 회수 가능한 유용자원의 종류와 구성비를 분석하였다. 폐 LCD 해체 분석결과를 보면 무게비로 플라스틱은 약 22%, PCB (Print Circuit Board)는 약 9%, 패널부는 약 34%, 이 외 금속류를 포함한 기타는 약 35%의 구성비를 가지고 있었다. 본 연구에서 얻어진 폐 LCD 데이터베이스는 폐 제품의 재활용률 향상은 물론 효율적 재자원화를 통한 경제적 해체 공정 시스템을 구축하는데 기여할 것으로 판단된다.

• Nuclear Engineering and Technology
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• 제56권3호
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• pp.812-818
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• 2024

The volume and toxicity of radioactive waste can be decreased by separating the components of high-level liquid waste according to their properties. An impregnated silica-based adsorbent was prepared in this study by combining N,N,N',N',N",N"-hexa-n-octylnitrilotriacetamide (HONTA) extractant, N',N'-di-n-hexyl-thiodiglycolamide (Crea) extractant, and macroporous silica polymer composite particles (SiO₂-P). The performance of platinum-group metals adsorption and separation on prepared (HONTA + Crea)/SiO₂-P adsorbent was then assessed together with that of co-existing metal ions by batch-adsorption and chromatographic separation studies. From the batch-adsorption experiment results, (HONTA + Crea)/SiO₂-P adsorbent showed high adsorption performance of Pd(II) owing to an affinity between Pd(II) and Crea extractant based on the Hard and Soft Acids and Bases theory. Additionally, significant adsorption performance was observed toward Zr(IV) and Mo(VI). Compared with studies using the Crea extractant, the high adsorption performance of Zr(IV) and Mo(VI) is attributed to the HONTA extractant. As revealed from the chromatographic experiment results, most of Pd(II) was recovered from the feed solution using 0.2 M thiourea in 0.1 M HNO₃. Additionally, the possibility of recovery of Zr(IV), Mo(VI), and Re(VII) was observed using the (HONTA + Crea)/SiO₂-P adsorbent.

• 한국전기화학회:학술대회논문집
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• 한국전기화학회 1998년도 제1회 총회 및 추계학술발표회
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• pp.45-45
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• 1998

• 기술사
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• 제31권3호
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• pp.45-48
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• 1998

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2001년도 춘계학술발표회요약집
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• pp.425.1-425
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• 2001