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전체 선택해제
총 381건 검색
본문검색 결과만 보기
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Nitrogen-doped carbon nanosheets from polyurethane foams and removal of Cr(VI)
Jiaqi Duan, Baohua Zhang, Huailin Fan, Wenzhong Shen, Shijie Qu 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 7 60-69 (10 pages)
to characterize the nitrogen-doped carbon nanosheet structure and composition. The removal of Cr(VI) by the N-doped carbon nanosheets was investigated. The results showed that the maximum removal capacity for chromium of 188 mg/g was found at pH=2.0 with PHC-Z-3. pH had an important effect on Cr(VI) removal and the optimal pH was 2.0. Moreover, amino groups and carboxyl groups in the nitrogen-doped carbon nanosheet played important roles in Cr(VI) removal, and promoted the reduction of Cr(VI) to... -
Nitrogen Removal in Column Wetlands Packed with Synthetic Fiber Treating Piggery Stormwater
Jing Cheng, Youngchul Kim 한국습지학회 한국습지학회지 8 Pages
한국습지학회 한국습지학회지 2016, Vol.18 No.1 9 68-75 (8 pages)
to the wetland was artificial stormwater. All the wetlands achieved effective removal of TSS (94%~96%), TCOD (68%~73%), TN (35%~58%), TKN (62%~73%) and NH4-N (85%~ 99%). Particularly, it was observed that COD was released from the fiber during one distinct period in all wetlands. This was probably due to the degradation of polymer fiber, and the released organic matters were found to serve as carbon source for denitrification. In addition, with longer retention time and frequent recirculation,... -
Novel Mathematical Modeling on Pilot-scale of Plug-flow Aerated Submerged Biofilm Reactor for Dissolved Organic Matter and Nitrogen Removal
Han. Youngrip, Johnson. Kraig, Hayes. Donald, Xu. Hua, Choi. Youngik 한국생물공학회 Biotechnology and bioprocess engineering 11 Pages
한국생물공학회 Biotechnology and bioprocess engineering 2013, Vol.18 No.5 989-999 (11 pages)
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Biological Nitrogen Removal System의 세균 군집 분석
김경미, 이상일, 이동훈, Kim. Kyung-Mi, Lee. Sang-Ill, Lee. Dong-Hun 한국미생물학회 미생물학회지 8 Pages
한국미생물학회 미생물학회지 2006, Vol.42 No.1 26-33 (8 pages)
질소 제거(Biological nitrogen removal; BNR) 시스템의 효율적인 처리 공정을 이재하기 위하여 질산화 반응조 내 세균 군집 구조를 16S rRNA 유전자의 PCR 및 terminal restriction fragment length polymorphism (T-RELP)방법을 이용하여 분석하였다. 본 연구에서 사용한 BNR 시스템은 국내에서 비교적 많이 적용되고 있는 부상여재를 이용한 고도처리 시스템, Nutrient Removal Laboratory 시스템, 반추기법을 이용한 영양염류 처리 Sequencing Batch Reactor (SBR)시스템이었고, 실험 결과 모든 시료에서 암모니아 산화 세균과... -
Optimization of Operation Conditions for Improving the Nitrogen Removal Efficiency in Wastewater Treatment Plant
최은희, 브람 클라벡, 마타이 오스터하우스, Choi. Eun-Hee, Bram. Klapwijk, Mathijs. Oosterhuis 한국농공학회 한국농공학회논문집 7 Pages
한국농공학회 한국농공학회논문집 2010, Vol.52 No.1 25-31 (7 pages)
TN(Total Nitrogen)농도를 방류수 수질기준인 각각 4 mg/L와 10 mg/L에 맞추기 위한 최적의 운전조건을 도출하기 위해 다양한 제어시스템이 시뮬레이션 되었다. 본 연구에 사용된 모델은 IWA(International Water Association) 활성슬러지 모델 No.1 (ASM No.1)이었고, GPS-X가 시뮬레이터로 사용되었다. 모델링을 위한 매개변수 민감도 분석결과 ASM No.1의 총 19개 매개변수 중 8개 변수 ($Y_H$, ksh, koh, $b_H$, ${mu}_a$, $k_{NA}$, kh, ka)가 방류수 수질에 영향을 미치는 것으로 조사되었고 이들 매개변수에 대해 보정을 수행하여... -
Catheter-guided percutaneous heartworm removal using a nitinol basket in dogs with caval syndrome
Won-Kyoung Yoon, Donghyun Han, Changbaig Hyun 대한수의학회 Journal of Veterinary Science 3 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 2호 15 199-201 (3 pages)
clinical signs. Several non-surgical and interventional methods are currently used for mechanical worm removal. However, the success rate and complications related to these methods are heavily dependent on methodology and retrieval devices used. In this study, we developed a catheter-guided heartworm removal method using a retrieval basket that can easily access pulmonary arteries and increase the number of worms removed per procedure. With this technique, we successfully treated four dogs with... -
Percutaneous heartworm removal from dogs with severe heart worm (Dirofilaria immitis) infestation
Seung-Gon Lee, Hyeong-Sun Moon, Changbaig Hyun* 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 2호 11 197-202 (6 pages)
immune reaction caused by rapid killing of the adult worm. Surgical removal and an interventional method using flexible alligator forceps have been well described in the literature. Despite the usefulness of mechanical removal using flexible alligator forceps, the methodology still needs to be upgraded for increasing the applicability for treating dogs with severe infestation. We describe herein a newly developed percutaneous removal method for heartworms and this was successfully applied to 4... -
The Study of NOx Removal Efficiency by NH3 over V2O5/TiO2
Keon Joo Lee 한국열환경공학회 한국열환경공학회 학술대회지 3 Pages
한국열환경공학회 한국열환경공학회 학술대회지 2015년 춘계 35 284-286 (3 pages)
The selective catalytic reduction (SCR) reaction of promoter catalysts was investigated in this study. TiO2 of pure anatase type was used as support. Activation measurement of prepare catalysts practiced on a fixed reactor packing by the glass bead after fill up catalysts in 1/4 inch stainless tube. The reaction temperature was measured by K-type thermocouple and catalyst was heated by electric furnace. The standard compositions of the simulated flue gas mixture in this study were as follows :...
