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Alamine336에 추출(抽出)된 염화(鹽化) 제 2철(鐵)의 무기산용액(無機酸溶液)에 의한 탈거(奪去)
이만승,채종귀,Lee, Man-Seung,Chae, Jong-Gwee 한국자원리싸이클링학회 2008 資源 리싸이클링 Vol.17 No.5
Alamine336에 추출된 염화 제 2철의 탈거실험을 위해 아황산과 염산 및 황산용액의 농도와 탈거조건을 변화시키며 탈거실험을 수행했다. 염산과 황산용액의 농도가 증가함에 따라 철의 탈거율은 감소했으나, 아황산용액의 경우에는 3M의 농도범위에서 산의 농도에 따라 탈거율이 증가하였다. 탈거온도가 증가하면 아황산용액에 의한 철의 탈거율은 감소하나, 염산용액의 경우에는 탈거율이 증가하였다. 0.5M의 철이 함유된 유기상으로부터 O/A=1/10의 조건에서 0.1 M의 염산의 경우에는 3단에 의해, 0.1M의 황산용액으로는 4단에 의해 0.05M농도의 철이 탈거된 용액을 얻을 수 있는 것을 등온탈거곡선으로부터 알 수 있었다. Stripping experiments of iron from the loaded Alamine336 by sulfurous, chloric and sulfuric acid solutions have been performed by varying the concentration of acid and stripping conditions. The stripping percentage of iron decreased with the increase of HCl and $H_{2}SO_4$ concentration, while that increased with the increase of $H_{2}SO_3$ concentration up to 3 M. Stripping temperature had adverse effect on the stripping percentage of iron in the stripping by $H_{2}SO_3$ solution, while the stripping percentage of iron by HCl solution increased with the increase of temperature. Stripping isotherm of iron by 0.1 M HCl and 0.1 M $H_{2}SO_4$ solution indicated that three and four stripping stages could result in a solution containing 0.05 M iron at an O/A ratio of 1/10 from the loaded Alamine336 phase where iron concentration was 0.5 M.
마그네슘함량이 높은 니켈 Laterite광으로부터 습식공정에 의한 니켈과 코발트 회수
이만승 ( Man Seung Lee ),김상배 ( Sang Bae Kim ),최영윤 ( Young Yun Choi ),채종귀 ( Jong Wee Chae ) 대한금속·재료학회 2010 대한금속·재료학회지 Vol.48 No.1
Leaching and solvent extraction experiments have been performed to develop a hydrometallurgical process for the recovery of nickel and cobalt from nickel laterite ore with high magnesium content. Most of the nickel and magnesium in the laterite ore dissolved at leaching conditions of 80℃ and 100 g/L sulfuric acid concentration. while half of the cobalt and iron were leached at the same conditions. Solvent extraction experiments were carried out with D2EHPA and saponifed D2EHPA from a synthetic solution containing Ni, Co, and Mg. The extraction percentage of Co, Mg. and Ni by D2EHPA was very low in a pH range of 4.4 to 7.3. while the extraction percentage sharply increased by using saponified D2EHPA. The stripping percentage of the metals from the saponified D2EHPA increased with sulfuric acid concentration and reached 99.9% at 1 M H2SO4 solution.
라테라이트광 활용한 위한 황산용액에서 Diphonix 수지의 니켈, 코발트, 마그네슘 흡착
이만승 ( Man Seung Lee ),김상배 ( Sang Bae Kim ),채종귀 ( Jong Gwee Chae ) 한국광물학회 2010 광물과 암석 (J.Miner.Soc.Korea) Vol.23 No.3
니켈 라테라이트광 황산침출액에 함유된 니켈과 코발트를 마그네슘으로부터 분리하는 것은 유가금속의 회수측면에서 중요하다. 세 금속간의 분리성을 조사하기 위해 니켈과 코발트 및 마그네슘이 단독으로 존재하는 황산용액과 혼합용액에서 Diphonix 수지에 의한 흡착거동을 조사하였다. 금속 농도는 100 ppm으로 고정시키고 황산용액의 pH를 5에서 7사이로 변화시켰다. 상온에서 Diphonix에 의한 세 금속이온의 흡착거동은 Langmuir 등온곡선과 잘 일치하였으며, 각 금속의 최대흡착량을 구했다. 세 금속이 혼합된 합성용액에서 Diphonix 농도에 따른 세 금속이온의 흡착거동은 동일하였으며 Diphonix 수지로 니켈과 코발트를 마그네슘으로부터 분려하는 것은 어렵다. It is of importance to separate Ni(II) and Co(II) from Mg(II) in solution which was leached from nickel laterite ore. In order to investigate the possibility of separating Ni(II) and Co(II) from Mg(II), adsorption behavior of the three metals from individual and mixed sulfate solutions was investigated by using Diphonix resin. The concentration of each metal In solution was fixed at 100 ppm and the pH of the sulfuric acid solution was changed from 5 to 7. At ambient temperature, the adsorption behavior of the three metal ions followed Langmuir adsorption isotherm. The loading capacity of Diphonlx resin for the three metal ions was obtained from the Langmuir isotherm. Since adsorption behavior of the three metal ions from the mixed solution was similar to each other, it was found to be difficult to separate Ni(II) and Co(II) from Mg(II) by using Diphonix resin.
방병기,구완서,윤영석,장윤식,최의진,김영우,김승수,임천규,김명재,김형규,이시래,김현철,이영규,정영,원대식,나하연,전건웅,이정상,황승덕,이희발,이호영,한대석,이광훈,윤경우,윤견일,고행일,강영준,강성귀,채종구,유석희,홍세용,박정식,한민희,강종명,박한철 대한신장학회 1987 Kidney Research and Clinical Practice Vol.6 No.1
In 1981, the Korean Society of Nephrology started annual report on dialysis therapy in Korea. Thereafter, the brief summary of Combined report on hemodialysis in Korea during the period 1981-1984 was reported in 1984. In 1985, the annual number of new patients rose from 17.4 to 20.4 per million, and also the total number of patients on dialysis theraphy rose from 20.7 to 29.1 per million. Total 808 patients (20.0 per million) were being on hemodialysis, 370 patients (9.1 per million) on CAPD and 330 patients (8.2 per million) with functioning renal graft on 31th Dec. 1985. The common causes of renal failure of new patients in order were chronic glomerulonephritis (40.0%), diabetic nephropathy (9.7%), hypertensive nephrosclerosis (6.3%) and so on. The common causes of death in dialytic patients were cardiac (33.7%), vascular (14.1%) and infection (9.8%), and social death due to refuse further treatment or suicide was 20.7% of all. Now the number of patients requiring dialysis therapy is increasing rapidly, largely due to expanded medical insurance coverage and improved economic status. But, dialysis equipment and personnel were increased rela- tively slower than explosion of number of patients requiring renal replacement therapy. Therefore we have to consider counterplan for this rapid growth of patients such as expansion of regular training for dialysis members, establishment of home and satellite dialysis system, and lawful background ready for cadaver renal transplantation.
방병기,윤영석,이정상,한대석,이호영,김형규,박한철,강종명,김명재,이희발,류석희,윤견일,고행일,오하영,유병희,정영,정석호,나하연,이시래,김기현,원대식,전건웅,조동규,윤경우,김현철,최일균,강영준,채종구,임중규,구완서,최의진,김문재,전성주,송정균,이광훈,성낙억,최영주,최창필,강성귀,나영호,김문중,신영태,김석영,이영규,남궁견 대한신장학회 1988 Kidney Research and Clinical Practice Vol.7 No.2
Since 1981, the Korean Society of Nephrology started annual report on renal replacement therapy in Korea. The annual number of new patients receiving dialysis treatment in 1986, compared with 1985, rose from 825 patients (20.4 per million population) to 957 patitents (23. 3 per million population) and the total number of patients on replacement therapy rose from 1,508 patients (37.3 per million population) to 2,534 patients (61.7 per million population). 1,335 patients (32.6 per million population) of these patients were living on hemodialysis, 573 patients (13.9 per million population) on continuous ambulatory peritoneal dialysis (CAPD) and 621 patients (15.1 per million population) on fun- ctioning renal graft as of December 31, 1986 The common causes of renal failure of new patients were chronic glomerulonephritis (41,6%), followed by diabetic nephropathy (12.6%), hypertensive nephroscler- osis (7.8%), chronic pyelonephritis (2.5%) and others. The annual mortality rate fell from 21.9% in 1981 to 13. 5% in 1986. The common causes of death in patients on dialysis therapy in order were cardiac (32.8%), vascular (14.7%), infective (14.7%) social problems (11.2%). Recently, the number of patients requiring dialysis is rapidly increasing due to expanded medical insurance support for dialysis and improved economic status of our country. Therefore, it is necessary to draw up counterplan for a rapid growth of the number of new patients.