FCC 폐촉매로부터 Ce , Nd 및 V 의 분리 회수 프로세스

전성균,양종규,김종화,이성식 ( Sung Kyun Jeon,Jong Gyu Yang,Jong Hwa Kim,Sung Sik Lee ) 한국공업화학회 1997 공업화학 Vol.8 No.4

석유화학공업에서 사용된 유동접촉분해(FCC) 폐촉매의 주성분은 Si와 Al이며, 그외에 Fe, Zn, Ti 등의 기본금속과 알칼리금속 및 Ce, Nd, Ni, V 등의 회유금속이 함유되어 있다. 0.25 mol/dm³-H₂SO₄를 침출제로 폐촉매를 침출하였을 때 Ce가 640, Nd가 310, 그리고 V가 450mg/dm³ 함유된 pH 1.0의 침출액을 얻었고, 아미노인산형 킬레이트수지에 의하여 Ce와 Nd를 선택흡착시킨 후, 4.0 mol/dm³-HCl로 용리시켜 1.2g/dm³의 Ce와 0.75 g/dm³의 Nd 농축액을 얻었다. 농축액을 다시 옥살산 침전 및 공기산화법으로 처리하여 Ce와 Nd의 분리가 가능하였으며, 염소이온 공존하에 추출제 TOPO를 이용한 용매추출법으로 V와 AJ을 각각 분리시켜, FCC 폐촉매로부터 순도가 99%인 Ce, Nd 및 V의 분리정제가 가능하였다. The major constituents in spent FCC catalysts are Si, Al, Fe, Ti, alkali metals and some others. The spent catalyst is also composed small amounts of rare metals such as Ce, Nd, Ni and V. The selective adsorption and concentration of Ce and Nd from the leaching solution of spent FCC catalysts with sulfuric acid(0.25mo1/dm³) were carried out by the column method with a chelate resin having a functional group of aminophosphoric acid type. Ce and Nd were separated from eluate liquor containing Al, Nd and V by the precipitation process with oxalic acid. Vanadium is purified from chloride ion coexistance by solvent extraction, employing tri-n-octyl phosphine oxide as extractant with Al in the raffinate solution. Rare metals with the purity of 99 percent were obtained from the spent FCC catalyst.

분말활성탄과 표면개질 활성탄에 의한 수용액중 니트로페놀의 흡착

이성식(Sung Sik Lee),유명호(Myung Ho Yu),김형준(Hyung Jun Kim),박성은(Seong Eun Park),전성균(Sung Kyun Jeon) 大韓環境工學會 1999 대한환경공학회지 Vol.21 No.2

원발병소의 외과적 절제 9년 후 경부 림프절에 전이된 경구개 선암종 1예

이형석(Hyung Seok Lee),전성하(Sung Ha Jeon),홍동균(Dong Kyun Hong),조석현(Seok Hyun Cho),태경(Kyung Tae) 대한두경부종양학회 2004 대한두경부 종양학회지 Vol.20 No.1

Primary malignancies of hard palate are rare, espicially adenocarcinoma of minor salivary gland in hard palate. The clinical stage of the tumor and its histologic grade at the time of treatment were significant predictors of survival. A 33-year-old woman was diagnosed with stage II, polymorphous low-grade adenocarcinoma of the hard palate and treated with surgery. We thougt that she would have excellent prognosis. After that, there was no definite evidence of recurrence during 3 months. Since then, the patient herself decided to discontunue follow-up. 9 years after that she came to the hospital due to both submandibular mass without any sign of local recurrence. CT scan and biopsy of the mass revealed multiple cervical metastatic adenocarcinoma without distant metastasis and the histologic findings were similar to that of the primary hard palate adenocarcinoma. So, we present this case with the review of literature.

완전혼합회분식 흡착반응기에서 단계별 선형화법을 이용한 유효확산계수의 추산

이성식,전성균,유명호 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.2

Values of intraparticle effective diffusivity, D_(e) were determined in a completely mixed batch reactor(CMBR) with the aid of the stepwise isotherm linearization for pyridine, 3-picoline and 4-picoline-domestic GAC system. For all systems, the pore diffusivity, D, could be obtained from D, with the paralled diffusion model and Neretnieks procedure. From the results, it became clear that the ratio of D_(p)/D_(AB) is almost constant, and the average ratio was about 3.44 of pyridine, 2.32 of 3-picoline, and 2.00 of 4-picoline. The values of tortuosity factor of domestic GAC was obtained as 1.99.

킬레이트수지 흡착제에 의한 제강더스트 침출수의 금속이온 흡착 및 농축에 관한 연구

이성식,이경화,최금찬,전성균 東亞大學校 大學院 1997 大學院論文集 Vol.22 No.-

The major constituents in domestic steelmaking dust are Fe, Zn, Na, Si, K, Cu, Mn and Pb and other such as Al, Mg, W, Cr, Cu, Ba, Ni, Mo and B are contended. High concentration of Al, Cu, Fe, Mn, Ni and Zn could be well leached with 2.5mol/dm?-H?SO? as leachant. However, the metals in domestic steelmaking dust are less idssolved with 3.0mol/dm?-NaOH except boron. Copper, aluminum, iron and boron in the leaching solution with 3.0mol/dm?-NaOH were concentrated by adsorption-desorption through column packed with a glucamin type chelate resin sorbents. Boron was selectively separated and concentrated by adsorption-desorption process with chelate resin from 82.9mg/dm? in the pH 8.5 of leaching solution to 945mg/dm? in elute solution.

산 침출액에서 EHPNA 에 의한 코발트와 니켈 금속 이온의 추출평형

양종규,전성균,이성식,강봉근 한국화학공학회 1997 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.35 No.3

산 전해질 용액에 침출된 코발트와 니켈 이온의 추출평형을 구하기 위하여 산 추출제인 EHPNA로써 Co(NO₃)₂-Acids(HCl, H₂SO₄)-H₂O, Ni(NO₃)₂-Acids(HCl, H₂SO₄)H₂O계의 추출평형을 실험하여 총괄추출평형식과 추출평형 상수를 구하였으며 각 금속 이온과 추출제의 복합체는 (CoR₂·2HR)￣, (NiR₄·4HR)￣이었다. 금속 추출공정에서 산용액의 열역학적 특성인 활동도를 고려하기 위하여 3성분 전해질 용액으로부터 실험적으로 얻은 equi-a(-H₂O) data로써 용질의 평균활동도 계수값인 γ_±[Co(NO₃)₂], γ_±[Ni(NO₃)₂], γ_±(HCl), γ_±(H₂SO₄)를 Mckay-Perring method로써 구하였다. 평균활동도 계수값은 LogD_M/γ_(±HCl) 와 LogD_M/γ_(±H₂SO₄)의 추출 분배계수 곡선에 영향을 미쳤으며, 산용액의 낮은 농도를 제외하고는 Modified Mckay-perring method에 의한 이론값과 실험값이 가장 잘 일치하였다. Extraction equilibrium formulations were studied for the distribution coefficient of cobalt and nickel ions from acidic leach solutions by using 2-Ethylhexylphosphonic Acid Mono-2-Ethylhexyl Ester(EHPNA) dissolved in n-heptane at 298。K. The extration equilibrium constants, K_(ex) of cobalt and nickel by EHPNA were investigated and they were different from each other that by DEHPA. Complex form of cobalt and nickel in the organic phase was CoR₂·2HR, NiR₂·4HR. With metal extraction processes, considering that the activity is one of the basic parameters in characterizing the solution itself, the mean activity coefficients of solutes, γ_±[Co(NO₃)₂], γ_±[Ni(NO₃)₂], γ_±(HCl), γ_±(H₂SO₄) in aqueous mixed electrolyte solutions were calculated by Mckay-Perring method and its modified form using the equi-water activity data of those solutions experimentally determined. The mean activity coefficients had an effect on extraction curve and experimental results agreed with well those calculated by Modified Mckay-Perring method on extraction profiles except at low acid concentrations.

국내 제강더스트로 부터 붕소의 분리회수를 위한 추출공정 개발

이성식,전성균 東亞大學校 1996 東亞論叢 Vol.33 No.-

An extraction process has been developed to recover boron from domestic steelmaking dust. Several metal values are found to be present in dust from the total analysis of its constituents. Ninety four percent of the boron in the dust can be leached selectively with 5N-sodium hydroxy at 130℃. Boron can be separated and purified from boron contained leach liquor by solvent extraction with a 2-Ethyl-1,3-Hexanediol(EHID) as extractants. The effects of concentration of extractant, EHD and hydrogen ion, H' on the distribution, D of boron are expressed by following emprical equation. C₁[EHD] + C₂[EHD]² D = -------------------- -l + 9.23/[H+] C₁and C₂for empirical equation were determined by a non-linear parameter estimation method.

미분층 흡착반응기에서 다공성 합성수지 입자내의 확산

이성식,전성균,김형준 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.1

Synthetic porous resin particles contacting o-Cresol, 2-Picoline and o-Nitrophenol in aqueous solution, Uptake curves were collected by use of a differential reactor for various concentration ranges. The effective intraparticle diffusivity, D_(e), based on the concentration difference in the liquid phase, was determined by comparing experimental and theoretical uptake curves. The experimental data of higher values of the equilibrium amount adsorbed agreed well with the theoretical values and the values of D_(e)' was independent of the amount adsorbed. The physico-chemical properties of adsorbate affected on adsorption equilibrium and kinetic parameters. Existence of nitro group at ortho position enhance the adsorption capacity and accelerated intraparticle mass transfer.

국내 제강더스트 중에 함유된 회유금속의 침출 및 흡착특성

김종화,양종규,전성균,이성식,강봉근 한국화학공학회 1997 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.35 No.3

산업폐기물인 제강더스트 중에 고농도로 존재하는 Al, Si, Fe, Zn 등과 함께 미량으로 함유되어 있는 희유금속 등의 재자원화에 대한 기초데이터를 얻기 위하여 선택적 분리 및 농축을 위한 침출 및 흡착특성을 실험 조사하였다. 제강더스트의 전량분석 결과, 주성분은 Fe, Zn, Si, 그외 알칼리 금속류가 고농도로 함유되어 있었으며, B, Ga, V등의 다양한 희소 금속들이 미량으로 함유되어 있었다. 침출제로 3.0㏖/d㎥-NaOH를 사용한 경우, 더스트에 함유되어 있는 B의 72%가 침출되고, pH 13.8인 알칼리 용액을 얻었다. B는 글루카민형 킬레이트수지에 의하여 선택적인 흡착이 가능하였다. 1.0㏖/d㎥-H₂SO₄를 용리제로 사용하여 용리시켰을 때 5.6g/d㎥의 B를 농축할 수 있었다. 알칼리침출한 잔사를 2.5mo1/d㎥-H₂SO₄로서 2단계 침출공정으로 얻은 0.038 g/d㎥의 Ga과 0.028 g/d㎥의 V을 함유하는 침출액을 아미노카르본산형 킬레이트수지에 의한 흡착 탈착 공정으로 Ga는 13g/d㎥, V는 9.7 g/d㎥의 농축액을 얻었다. This study investigated for leaching and adsorption characteristics of rare metals from domestic steelmaking dust in which they exist at very low concentration in the a mixture of high concentration of iron, zinc, and silicon. The major constituents in this steelmaking dust are iron, zinc, silicon and alkali metals. The dust were contented of rare metals such as boron, gallium and vanadium. Of the boron contained in the dust, 72 % leached with 3.0 ㏖/d㎥ sodium hydroxide solution where the pH of the final pregnant liquor is 13.8. To remove the impurity metals, they were precipitated as their hydroxides by adjusting the solution pH being 10. The selective concentration of boron was done using a chelating resin column with a functional group of glucamine type, and the eluate containing 5.6 g/d㎥ of boron was obtained. By employing 2.5 ㏖/d㎥ sulfuric acid for leaching vanadium and gallium from the solid residue resulting from leaching with alkalic solution, the leach liquor containing 0.038 g/d㎥ of gallium and 0.028 g/d㎥ of vanadium was obtained. Gallium and vanadium in the leaching solution were concentrated by use of a chelating resin column with a functional group of aminocarboxylic acid type after reduction of ferric ion to ferrous ion and pH adjustment. The elute was conditioned and passed again through the column. Gallium was concentrated to 13 g/d㎥ and vanadium to 9.7 g/d㎥ in the resulting elute.

UASB 반응기에서 제지폐수 처리를 위한 생물학적 속도론 모델에 관한 연구

박승조,이성식,전성균,김 광,신미옥,김미양,이영상 東亞大學校 大學院 1993 大學院論文集 Vol.18 No.-

The granulation of sludge in the UASB reactor is beneficial to stable operation of the reactor at a high volumetric COD loading rate and high hydraulic loading rate, because it improves the setting ability of sludge and the granular sludge acquired has high methanogenic activity. The design of integral biogas?/liquid/solids seperators varies among suppliers of UASB technology. Comples, soluble organic compounds are the first to be hydrolyzed (Stage 1) to simple organics. These simple organics are converted by acid-forming bacteria to C₄H?COOH, C₃H?COOH, CH₃COOH, H₂ and CO₂ in a acidogenic phase(STAGE 2). The higher organic acids are subsequently converted to CH₃COOH and H₂(Stag 3) by acetogenic bacteria. The final step(Stage 4) to produce CH₃ is carried out by me-thano-bacterium. The kinetics of anaerobic digestion of paper wastewaters largely depends on the environmental conditions. The purpose of this study was to elucidate the kinetics of methane production from paper was tewaters in the UASB. A four-step reaction mechanism was proposed for modeling methanogenesis of anaerobic treatment of paper waterwaters.