이온교환 칼럼 충진비의 변화가 도금폐수 중 니켈이온 흡착에 미치는 영향

황택성; 이진혁; Taek-Sung Hwang; Jin-Hyok Lee

Polymer(Korea), Vol.26, No.5, 551-558, September, 2002

Export Citation

이온교환 칼럼 충진비의 변화가 도금폐수 중 니켈이온 흡착에 미치는 영향

Effect of Packing Density of Ion-Exchange on the Nickel Adsorption Column in Electroplating Rinse Water

황택성 ^†, 이진혁

충남대학교 공과대학 화학공학과, 대전 305-764

Taek-Sung Hwang^†, and Jin-Hyok Lee

Department of Chemical Engineering, College of Engineering, Chungnam National University, Daejon 305-764, Korea

E-mail:

초록

술폰산형 섬유이온교환체를 이용하여 도금 폐수 중 니켈 이온 분리를 위해 각각의 조건에 따른 니켈 이온에 대한 흡착 특성을 관찰하였다. 술폰산형 섬유이온교환체의 함수율은 술폰화도 및 용매의 극성이 클수록 크게 나타났으며 이온교환용량은 술폰화도가 증가함에 따라 증가하였으며 술폰화도 16%에서 3.38 meq/g로 높게 나타났다. 니켈이온의 흡착은 pH 변화에 따라 크게 변화하지 않았고 모든 흡착은 10분 이내에 약 7.5 mg/min의 흡착속도로 매우 빠르게 평형에 도달하였다. 재생 시 흡착용량은 7회까지 3.15 meq/g으로 거의 100% 가까이 탈착되었으며 그 이상에서는 2.01 meq/g으로 약간 감소하는 것으로 보아 본 연구에 사용한 이온교환체는 내구성에 문제가 없는 것으로 판단되었다. 한편 흡착평형 시간은 L/D의 값이 증가함에 따라 선형적으로 증가하였으며, 최대 흡착용량은 각각 2.71~3.01 meq/g으로 약간 증가하였고 L/D의 변화에 크게 영향이 없는 것으로 보아 L/D<2로 흡착 칼럼의 설계가 가능할 것으로 사료되었다. 또한 이온교환 섬유의 충전비가 일정할 때 pH 변화에 따른 니켈 이온의 흡착량은 산성 pH에서는 큰 변화가 없는 것으로 보아 도금수세액의 pH가 산성인 점을 고려할 때 pH 5 이하가 적합한 것으로 판단되었다.

It was observed that adsorption characteristics of sulfonated fabric ion-exchanger for separating nickel ion from electroplating rinse water. Swelling ratio was increased by increasing degree of sulfonation and polarity of solvent. Ion-exchange capacity was also increased by increasing degree of sulfonation and showed 3.38 meq/g at 16% sulfonated ion-exchanger. There was little effects of pH. Adsorption equilibrium was attained within 10 min, and adsorption rate was 7.5 mg/min. Adsorption capacity was not changed after 7 cycles of regeneration process. Regeneration adsorption capacity was slightly decreased to 2.01 meq/g. It confirmed that durability of sulfonated fabric ion-exchanger was suitable for adsorption process. Adsorption equilibrium time was linearly increased by increasing L/D and adsorption capacity showed the ion exchange capacity within the range of 2.71~3.01 meq/g in continuous process. Design of adsorption column could be possible for L/D<2. Under constant L/D condition, there is no little pH effect when rinse water is acidic solution, and operation condition of adsorption process was optimized under pH5.

Keywords:adsorption capacity;adsorption rate;adsorption equilibrium;L/D;rinse water

[References]

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Kun KA, Kunin R, J. Polym. Sci. A: Polym. Chem., 1, 2689 (1968)
Kun KA, Kunin R, J. Polym. Sci. B: Polym. Phys., 2, 587 (1964)
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Egawa H, Maeda H, J. Chem. Soc. Jpn., 3, 518 (1976)
Egawa H, Nonaka T, Fujiyama Y, J. Chem. Soc. Jpn., 6, 888 (1977)
Garcia AA, King CJ, Ind. Eng. Chem., 16, 204 (1989)
Kuo Y, Munson CL, Rixey WG, Garcia AA, Frierman M, King CJ, Sep. Purif. Methods, 16, 31 (1987)
Munson CL, Garcia AA, Kuo Y, Frierman M, King CJ, Sep. Purif. Methods, 16, 65 (1987)
Frierman M, Kuo Y, Joshi D, Garcia AA, King CJ, Sep. Purif. Methods, 16, 91 (1987)
Bhandari VM, Sep. Sci. Technol., 33(13), 2009 (1998)
Cloete FL, Marais AP, Ind. Eng. Chem. Res., 34(7), 2464 (1995)
Helfferich F, "Ion Exchange," McGraw-Hill, New York (1962)
Holl W, Sontheimer H, Chem. Eng. Sci., 32, 755 (1977)
Juang RS, Chou TC, Sep. Sci. Technol., 31(10), 1409 (1996)
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Engelken RD, Mccloud HE, J. Electrochem. Soc., 32, 568 (1985)

[Related Articles]

[1] Smith BM, Todd P, Bowman CN, Sep. Sci. Technol., 30(20), 3849 (1995)

[2] Patterson JW, "Industrial Wastewater Treatment Technology," 2nd Ed., Butterworth Publisher, Boston (1985)

[3] Tarkonskaya IA, Kononchuk TI, Pestrikova NI, Chem. Abstr., 74, 116321 (1971)

[4] Elliott HA, Huang CP, J. Am. Chem. Soc., 4, 1 (1980)

[5] Aori T, Muenmori M, Bull. Chem. Soc. Jpn., 55, 730 (1982)

[6] Kun KA, Kunin R, J. Polym. Sci. A: Polym. Chem., 1, 2689 (1968)

[7] Kun KA, Kunin R, J. Polym. Sci. B: Polym. Phys., 2, 587 (1964)

[8] Sederel WL, Dejong GJ, J. Appl. Polym. Sci., 17, 2835 (1973)

[9] Halgen H, Dejong GJ, Sederal WL, J. Polym. Sci., 19, 2647 (1975)

[10] Dusek K, J. Polym. Sci. B: Polym. Phys., 3, 209 (1965)

[11] Goto T, Izumi G, J. Chem. Soc. Jpn., 7, 1315 (1974)

[12] Soldatov VS, Sergeev GI, Martsinkevich RV, Dock. Akad. Nauk USSR, 28, 1009 (1984)

[13] Egawa H, Maeda H, J. Chem. Soc. Jpn., 3, 518 (1976)

[14] Egawa H, Nonaka T, Fujiyama Y, J. Chem. Soc. Jpn., 6, 888 (1977)

[15] Garcia AA, King CJ, Ind. Eng. Chem., 16, 204 (1989)

[16] Kuo Y, Munson CL, Rixey WG, Garcia AA, Frierman M, King CJ, Sep. Purif. Methods, 16, 31 (1987)

[17] Munson CL, Garcia AA, Kuo Y, Frierman M, King CJ, Sep. Purif. Methods, 16, 65 (1987)

[18] Frierman M, Kuo Y, Joshi D, Garcia AA, King CJ, Sep. Purif. Methods, 16, 91 (1987)

[19] Bhandari VM, Sep. Sci. Technol., 33(13), 2009 (1998)

[20] Cloete FL, Marais AP, Ind. Eng. Chem. Res., 34(7), 2464 (1995)

[21] Helfferich F, "Ion Exchange," McGraw-Hill, New York (1962)

[22] Holl W, Sontheimer H, Chem. Eng. Sci., 32, 755 (1977)

[23] Juang RS, Chou TC, Sep. Sci. Technol., 31(10), 1409 (1996)

[24] Ricker NL, Pittman EF, King CJ, J. Sep. Pro. Tech., 1, 23 (1980)

[25] Engelken RD, Mccloud HE, J. Electrochem. Soc., 32, 568 (1985)