화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.2, 138-145, April, 2002
Export Citation
수용액에서 고정층 반응기를 이용한 칼사이트형 탄산칼슘에 대한 납이온(II)의 흡착특성
Adsorption Characteristics of Pb(II) on Calcite-Type Calcium Carbonate by Fixed Bed Reactor in Aqueous Solutions
홍성철, 김문선, 정재관†
  • 성균관대학교 화학공학과, 수원 440-746
Sung Chul Hong, Moon Sun Kim, and Jaygwan G. Chung†
  • Department of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Korea
E-mail:
초록
본 연구에서는 고정층 반응기를 이용하여 칼사이트형 탄산칼슘에 대한 납이온의 총괄 흡착속도식을 구명하였으며 강산 용액으로 개질된 탄산칼슘의 흡착능을 관찰했다. 탄산칼슘은 유리 비드에 고정시켜 반응기의 충전층으로 사용하였으며 고정된 탄산칼슘 양은 248.8± 17.7 mg/cm(2)였다. 탄산칼슘과 납이온 간의 흡착등온식은 Langmuir 식으로 나타내는 것이 Freundlich 식보다 신뢰도가 높았다. pH 2~4 범위에서는 pH에 따라 흡착량은 급격히 증가하였으며 pH 4~8 범위에서는 증가가 거의 없었다. 15% 염산 수용액으로 개질된 탄산칼슘의 흡착능이 가장 우수했으며 자연상태의 탄산칼슘에 비해 25% 이상 흡착능 개선효과가 있었다. 흡착에 따라 수용액의 칼슘이온 증가가 관찰되었다. 총괄 흡착속도식에 관한 실험은 경막저항이 최소가 되는 80 mL/min의 유속에서 진행되었으며 자연상태의 탄산칼슘과 15%의 염산 수용액으로 개질된 탄산칼슘에 대한 총괄 흡착속도식은 다음과 같았다. γ = 0.055Ce(23.999) - 0.096qe(5.457), γ = 0.66Ce(6.930) - 0.39qe(2.046)
In this article, adsorption experiments were performed to study the overall adsorption rate of the lead ion(Pb(2+)) on the calcite-type calcium carbonate in a fixed bed reactor, and the adsorptivity on the pretreated calcium carbonate in a strong acidic solution was investigated. Calcium carbonate was immobilized on glass beads that were used in a packed bed. The amount of fixed calcium carbonate was about 248.8± 17.7 mg/cm(2). The reliability of Langmuir adsorption isotherm was higher than that of Freundlich adsorption isotherm. The adsorption amount increased rapidly in pH range of 2 to 4; however, no further increase in the adsorption amount was observed from pH 4 to pH 8. The pretreated calcium carbonate with a 15% HCl solution had the highest adsorptivity; the adsorptivity was increased by 25%. Increased calcium ion(Ca(2+)) concentration in solutions was observed as the adsorption process progressed. An experiment to measure the overall adsorption rate was conducted at the flow rate of 80 mL/min, where the film diffusion resistance was at a minimum. The overall adsorption rates of non-treated and treated with a 15% HCl solution of calcium carbonates, respectively, were as follows: γ = 0.055Ce(23.999) - 0.096qe(5.457), γ= 0.66Ce(6.930) - 0.39qe(2.046)
Keywords:adsorption;lead ion;calcite-type calcium carbonate;fixed bed reactor
  1. Lee SC, Chung JG, HWAHAK KONGHAK, 39(1), 48 (2001)
  2. Shim JW, Ryu SK, HWAHAK KONGHAK, 36(6), 903 (1998)
  3. Spark KM, Johnson BB, Wells JD, Eur. J. Soil Sci., 46, 621 (1995) 
  4. Yang HC, Yun JS, Kang MJ, Kim JH, Kang Y, Korean J. Chem. Eng., 16(5), 646 (1999)
  5. Zaporozhets O, Gawer O, Sukhan V, Colloids Surf. A: Physicochem. Eng. Asp., 147, 273 (1999) 
  6. Artola A, Martin M, Balaguer MD, Rigola M, J. Colloid Interface Sci., 232(1), 64 (2000) 
  7. Cho JH, Kwon OD, Lee JM, J. Vet. Res., 36(3), 565 (1996)
  8. Chung CH, Mun YJ, Moon CS, Yoo TJ, Choi MK, Chung YT, Korean J. Environ. Biol., 9(2), 63 (1991)
  9. Kim MS, Lee SC, Chung JG, J. Korean Ind. Eng. Chem., 12(1), 83 (2001)
  10. Barbier F, Duc G, Petit-Ramel M, Colloids Surf., 166, 153 (2000) 
  11. Nagata N, Kubota LT, Bueno MIMS, Peralta-Zamora PG, J. Colloid Interface Sci., 200(1), 121 (1998) 
  12. Gupta VK, Gupta M, Sharma S, Wat. Res., 35(5), 1125 (2001) 
  13. Seki H, Suzuki A, J. Colloid Interface Sci., 211(2), 375 (1999) 
  14. Lee MY, Kang HA, Yang JW, J. KSEE, 22(10), 1747 (2000)
  15. Kim MS, Chung JG, J. Colloid Interface Sci., 233(1), 31 (2001) 
  16. Lee KH, Chung TS, J. Korean Ind. Eng. Chem., 11(1), 75 (2000)
  17. Lee KH, Chung TS, J. Korean Ind. Eng. Chem., 12(2), 170 (2001)
  18. Geffroy C, Foissy A, Lixon P, Tournilhac F, Cabane B, Colloids Surf. A: Physicochem. Eng. Asp., 162, 107 (2000) 
  19. Song MG, Kim JY, Kim JD, J. Colloid Interface Sci., 226(1), 83 (2000) 
  20. Halabkessira L, Ricard A, J. Colloid Interface Sci., 179(1), 269 (1996) 
  21. Bilinski H, Sirac S, Kozar S, Branica M, Schwuger MJ, Wat. Res., 29(8), 1993 (1995) 
  22. Winkler BF, Thesis MS, Northwestern University Illinois, U.S.A. (1969)
  23. Cheong BS, Chung JG, J. Korean Ind. Eng. Chem., 11(6), 591 (2000)
  24. Cookson JT, J. Environ. Sci. Technol., 4(2), 128 (1970) 
  25. Gutjahr A, Dabringhaus H, Lacmann R, J. Cryst. Growth, 158, 296 (1996) 
  26. Hitachi Ltd., Analysis guide for polarized zeen atomic absorption spectrophotomerty, Hitachi Ltd., 4-52, Tokyo, Japan (1987)
  27. Slejko FL, Adsorption Technology 53, Marcel Dekker, Inc., New York, U.S.A. (1985)
  28. Boughriet A, Laureyns L, Gengembre L, Aboukais A, Chem. Mater., 11(1), 44 (1999)