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염소계 화합물(TCE, PCE)로 오염된 토양 및 지하수 처리를 위한 실용적 고도산화처리시스템 개발 (II)
김상익,손석규,공성호,Kim, Sang-Yeek,Sohn, Seok-Gyu,Kong, Sung-Ho 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.2
Advanced oxidation processes (AOPs) have advantages to reduce the processing time and mineralize contaminants dissolved in groundwater. Recently, remediation techniques for organic contamination in groundwater have been studied, and technology using $UV/H_2O_2$ is generally accepted as one of the most powerful and reliable alternative for the remediation of groundwater contamination. In this study, $UV/H_2O_2$ technology, which generates hydroxyl radical ($\cdot$ OH) as known for strong non-selective oxidant, was used to degrade chlorinated solvents (TCE and PCE), and it was expanded to apply continuous stirred tank reactor (CSTR) system (i.e. combinations of three CSTR). The tested parameters for CSTR system were retention time and groundwater/$H_2O_2$ injection volume ratio. To find optimum parameters for CSTR system, various retention time (6 min ~ 90 min) and groundwater/$H_2O_2$ injection volume ratio (5/1 ~ 119/1) were tested. Other conditions for CSTR were adapted from the batch test results, which concentration of $H_2O_2$ and UV dose were 29.4 mM (0.1%) and 4.3 kWh/L, respectively. Based on the experimental results, the optimum parameters for CSTR system were 20 min for retention time and 119/1 for groundwater/$H_2O_2$ injection volume ratio. Applying these optimum conditions, chlorinated solvents (TCE and PCE) were removed at 99.9% and 99.6%. Moreover, the effluent concentrations of TCE and PCE are 0.036 mg/L and 0.087 mg/L, respectively, which are satisfied the regulatory level (TCE 0.3 mg/L, PCE 0.1 mg/L). Consequently, the CSTR system using $UV/H_2O_2$ technology can achieve high removal efficiency in the event of treatment of groundwater contaminated by chlorinated solvents (TCE and PCE).
동맥류를 동반한 양측성 관상동맥-폐동맥루의 외과적 교정 -1예 보고-
김상익,김병훈,노정섭 대한흉부외과학회 2007 Journal of Chest Surgery (J Chest Surg) Vol.40 No.12
흉부 압박감과 심계항진, 흉통을 주소로 내원한 76세 여자 환자로 동맥류를 동반한 양측성 관상동맥-폐동맥루로 진단되었다. 수술은 심폐우회 및 심정지하에 이루어 졌는데 주폐동맥 주변의 동정맥루 혈관 및 동맥류 절제 그리고 폐동맥 내부에서 동정맥루의 출구를 봉합하였다. 술 후 결과는 양호하였으며 문헌고찰과 함께 보고한다.
총상 후 발생한 만성 외상성 대퇴동정맥루의 치험 -1예 보고-
김상익,김병훈 대한흉부외과학회 2008 Journal of Chest Surgery (J Chest Surg) Vol.41 No.1
A 60-year-old man with a history of gunshot vascular injury on the right inguinal area, and this happened in the military service 40 years ago, was admitted to our hospital with claudication and dyspnea on exertion. The patient was diagnosed with a chronic traumatic femoral arteriovenous fistula. The patient underwent a successful operation for arteriovenous fistula closure with bovine pericardium and for femoropopliteal bypass with using a right greater saphenous vein graft. The patient is well at 14 months after the operation.
기관절개구가 있는 환아에서 심실중격결손증의 치험-1례보고-
김상익,박철현,박국양,오상준 대한흉부심장혈관외과학회 2001 Journal of Chest Surgery (J Chest Surg) Vol.34 No.3
심장 탈장은 심낭을 열고 전폐절제술을 시행 후 드물게 발생되는 합병증으로 수술이 끝날때나 수술직후 발생된, 44세 남자환자에서 심낭을 열고 좌측 폐를 전절제술 후 심낭 결손부위를 인공조직으로 봉합하였다. 수술이 종료될 때 심장탈장이 발생되어 개흉에 의한 응급 복원을 시행하였으나 심한 저 산소성 뇌 손상이 발생되었다.