알루미나에 의한 수용액 중의 산성이온 제거 특성

홍영호; Young-Ho Hong

Journal of the Korean Industrial and Engineering Chemistry, Vol.18, No.5, 454-458, October, 2007

Export Citation

알루미나에 의한 수용액 중의 산성이온 제거 특성

Removal Characteristic of Acidic Ion in Aqueous Solution by Alumina

홍영호^†

혜전대학 의료재료과

Young-Ho Hong^†

Department of Bio-Materials, Hyejeon College, Hongsung 350-702, Korea

E-mail:

초록

본 연구는 알루미나를 이용하여 수용액 중에 존재하는 Ca2+, Mg2+, Sr2+, SO42-, NO3-, Cl- 이온의 제거 특성을 분석하기 위하여 실시하였다. 알루미나는 Al(NO3)3.9H2O와 NH4OH를 사용하여 합성한 수화물을 450∼750 ℃로 5 h 동안 열처리하고 FT-IR과 Brunauer-Emmett-Teller (BET)법으로 물성을 분석하였다. 실험결과에 의하면 알루미나의 비표면적은 열처리 온도가 증가하면 감소하는 특성을 나타내었다. 알루미나에 의한 흡착능은 SO42-와 NO3-가 각각 23 mg/g와 12.4 mg/g의 값을 보였다. 반면에 Cl-는 4 mg/g으로 비교적 낮은 값을 보였다. 일반적으로 음이온 제거 효율은 알루미나의 제조를 위한 열처리 온도가 증가할수록 감소하였으며, 450 ℃로 처리한 알루미나의 경우에 가장 좋은 처리 효율을 나타내었다. 양이온인 Ca2+, Mg2+, Sr2+의 제거 효율은 알루미나의 열처리 온도에 비례하여 증가하는 경향을 보였다.

The removal characteristics of ionic species, such as Ca2+, Mg2+, Sr2+, SO42-, NO3-, and Cl- by adsorption on the alumina were investigated. Alumina precusor powders were prepared from Al(NO3)3.9H2O and NH4OH. Alumina materials prepared from the heat treatment in a furnace at 450∼750 ℃ for 5 h were analysed using FT-IR and the Brunauer-Emmett-Teller (BET) method. The specific surface area of the product particles decreased significantly with treatment temperature. The adsorption capacities of SO42-and NO3-on alumina were 23 mg/g and 12.4 mg/g, respectively. But, removal efficiencies of Cl- were less than 4 mg/g. In general, the removal efficiencies of the anion species were decreased with increasing treatment temperature. The best anion removal efficiency was obtained when the alumina was treated under 450 ℃. Removal efficiencies of Ca2+, Mg2+, and Sr2+ were increased with increasing treatment temperature.

Keywords:alumina;removal;anion;cation

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[1] Ksapabutr B, Gulari E, Womgkasemjit S, Colloids Surf., 53, 145 (2004)

[2] Temuujin J, Jadambaa T, Mackenzie KJD, Angerer P, Porte F, Bull. Mater. Sci., 23, 301 (2000)

[3] Hart LD, Alumina Chemicals: Science and Technology Handbook, The American Ceramic Society, Ohio (1990)

[4] Carre AL, Roger F, Varinot C, J. Colloid Interface Sci., 154, 174 (1992)

[5] Mieth JA, Schwarz JA, Huang YT, Fung SC, J. Catal., 122, 202 (1990)

[6] Sprycha R, J. Colloid Interface Sci., 123, 1 (1989)

[7] Umansky BS, Hall WK, J. Catal., 124, 97 (1990)

[8] Subramanian S, Noh JS, Schwarz JA, J. Catal., 114, 433 (1988)

[9] Nattanson JA, Basic Environmental Technology, 92, Prentice Hill, New Jersey (2000)

[10] Kim SY, Kim JH, Kim HJ, Cho YS, J. of K. S. E. E., 27, 247 (2005)

[11] Moon JH, Choi CH, Ryu BR, Kim CG, J. of K. S. E. E., 27, 1057 (2005)

[12] Sudhakar MR, Mamatha P, Current Science, 87, 942 (2004)

[13] Kim SA, Hong JS, Suh JK, Kang H, Lee JM, J. K. S. E. E., 27, 109 (2005)

[14] Son HJ, Roh JS, Kim SG, Bae SM, Kang LS, J. K. S. E. E., 27, 762 (2005)

[15] Yurdakoc M, Akcay M, Tonbul Y, Yurdakoc K, Turk J. Chem., 23, 319 (1999)