http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 성병주(Byung-Joo Sung) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
권기홍(Gi-Hong Kwon),남창모(Chang-Mo Nam),김동원(Dong-Won Kim),성병주(Byung-Joo Sung) 한국환경관리학회 2008 環境管理學會誌 Vol.14 No.3
전자산업에서 발생되는 유해 폐산의 재활용은 환원ㆍ산화, 정제, 여과 과정을 거쳐 환원공정에서는 구리를, 최종공정에서는 염화제이철(FeCl₃) 을 회수하고 있으나, 환원과정에서 얻어진 구리의 경우 순도가 낮아 제 가격을 받지 못하고 있는 실정이다. 따라서 본 연구는 폐산의 재활용공정 중 환원과정에서 얻어진 구리의 회수율 증대를 위한 연구를 수행한 결과 다음과 같은 결론을 얻었다. 구리 회수율 중대를 위한 방법으로 수세척을 이용하고 세척회수 2회, 구리 slurry와 세척액량의 비 30 : 100, 세척 및 침전시간 각각 30분, 세척조 하부 blowing하는 조건으로 운전한 결과 구리 순도율(수분 포함)은 세척 전에는 평균 62.8%였으나 세척 후에는 평균 80.4%로 약 18%의 순도가 향상된 것으로 확인할 수 있었으며, 세척과정에서 발생된 세척액의 성분분석 결과 농도는 낮지만 Cr, Pb 등의 중금속물질이 포함되어 있어 적정한 처리가 필요할 것으로 판단된다. 결론적으로 기존의 공정에서 세척 회수, 구리 slurry와 세척액량의 비, 세척 및 침전 시간의 적절한 조합으로 충분히 회수율을 높일 수 있음을 확인하였다. Hazardous acid wastewater generated at electronic industries can be recycled and reused after going through the procedures of reduction, oxidization, purification and filtration, Then, the Cu can be recovered in the reduction process and the iron chloride (FeCl₃) in the final process, respectively. Because the recovered Cu has a very low degree of purity, however, its fair and reasonable price can not be established. This study was performed to improve the recovery of Cu in the reduction process during the recycling and reuse of acid wastewater. The result of this study is summarized as follows. Water washing was used as a method to improve the Cu recovery with the following conditions: Twice washing recovery, the ratio of Cu slurry to washing solution: 30:100, washing and precipitation time: each 30 minutes, and blowing under the washing bath. Then, it was shown that the average purity degree of recovered Cu(including water) accounted for 62.7% before washing, and 80.4% after washing. There was the increase of approximately 18% in the Cu purity. When chemicals of washing solution were analysed after washing, the findings showed that such heavy metals as Cr and Pb were contained in very low concentration. It seems that they have to be treated in a proper way. In conclusion, the finding showed that it should be possible to improve the recovery by properly combining the existing procedure with these conditions: Washing times, ratio of Cu slurry to washing solution, washing and precipitation time.
-
병원폐기물중 폐합성수지류의 물성 및 세척·선별에 관한 기초연구 : 폐주사기와 폐수액세트를 중심으로
권기홍,성병주,박종웅 慶山大學校 環境시스템開發硏究所 1999 環境硏究 Vol.4 No.1
This research was carried out basic study to effective manage and develop washing-separator system for plastics in hospital wastes. The results are as follows : In 1995, the generation rate of plastics in hospital waste was 6,666ton in total amount of 11,195ton. Most of syringe was PP and the composition of drainage set was PP, PVC and ABS. Therefore, separation of syringe is better than that of drainage set. Pathoganic microbes in syringe was positive before sterilization process, but became negative after that process, Pollution of syringe-washing water was increased as washing times increased and optimum washing to obtain good pellet was 6 times. Separation efficiency differed with content of injected rubber in the manufactory process of syringe makers. Remaining rubber in pellet was completely removed by the final separator developed during the this project, so we obtained good PP pellet.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
