Adsorption of Orthophosphoric, Pyrophosphoric, and Tripolyphosphoric Acids from Aqueous Solutions by Calcined Gibbsite

被引:3
作者
Ogata, Fumihiko [1 ]
Ueda, Ayaka [1 ]
Kawasaki, Naohito [1 ,2 ]
机构
[1] Kinki Univ, Fac Pharm, Higashiosaka, Osaka 5778502, Japan
[2] Kinki Univ, Antiaging Ctr, Higashiosaka, Osaka 5778502, Japan
关键词
orthophosphoric acid; pyrophosphoric acid; tripolyphosphoric acid; adsorption; PHOSPHATE ADSORPTION; CONDENSED PHOSPHATES; ALUMINUM-HYDROXIDE; TITANIUM-DIOXIDE; REMOVAL; SORPTION; SURFACE;
D O I
10.1248/cpb.c14-00224
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
In this research, gibbsite (GB) samples calcined at 200-1000 degrees C (GB200-GB1000) were produced. These GBs were used to adsorb orthophosphoric, pyrophosphoric, and tripolyphosphoric acids from aqueous solutions. The properties (amounts of hydroxyl groups, specific surface areas, mean pore diameters, and solution pHs) of the GBs were investigated, and their adsorption capacities for phosphoric acids evaluated. The amount of hydroxyl groups (0.46 mmol/g) and specific surface area (295.3 m(2)/g) of GB400 were greater than those of the other GBs. The mechanism of phosphoric acid adsorption on the GBs was related to the amount of hydroxyl groups and specific surface area. The optimal pH for phosphoric acid adsorption by GBs was 2.0-3.0. Equilibrium adsorption was reached within 24h. The adsorption processes followed a pseudo-second-order kinetic model (correlation coefficient, 0.998-0.999). The adsorption capacity increased with increasing temperature. The adsorption isotherm data fitted the Langmuir (correlation coefficient: 0.921-0.992) and Freundlich (correlation coefficient: 0.948-0.997) equations well. Our results will be useful when developing methods for the adsorption of phosphoric acids from aqueous solutions.
引用
收藏
页码:799 / 805
页数:7
相关论文
共 39 条
  • [1] Abe I., 1976, Yukagaku, V25, P145
  • [2] Sediment depth attenuation of biogenic phosphorus compounds measured by 31P NMR
    Ahlgren, J
    Tranvik, L
    Gogoll, A
    Waldebäck, M
    Markides, K
    Rydin, E
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (03) : 867 - 872
  • [3] Chung KY, 1999, SOIL CROP SCI SOC FL, V58, P72
  • [4] Adsorption of phosphate by layered double hydroxides in aqueous solutions
    Das, J.
    Patra, B. S.
    Baliarsingh, N.
    Parida, K. M.
    [J]. APPLIED CLAY SCIENCE, 2006, 32 (3-4) : 252 - 260
  • [5] Fetting J., 2000, CHEM WATER WASTEWATE
  • [6] HYDROLYSIS OF CONDENSED PHOSPHATES DURING AEROBIC BIOLOGICAL SEWAGE TREATMENT
    FINSTEIN, MS
    HUNTER, JV
    [J]. WATER RESEARCH, 1967, 1 (04) : 247 - &
  • [7] A real time in situ ATR-FTIR spectroscopic study of linear phosphate adsorption on titania surfaces
    Gong, WQ
    [J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2001, 63 (03) : 147 - 165
  • [8] Surface complexation of condensed phosphate to aluminum hydroxide: An ATR-FTIR spectroscopic investigation
    Guan, XH
    Liu, Q
    Chen, GH
    Shang, C
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 289 (02) : 319 - 327
  • [9] Adsorption behavior of condensed phosphate on aluminum hydroxide
    Guan Xiao-hong
    Chen Guang-hao
    Shang Chii
    [J]. JOURNAL OF ENVIRONMENTAL SCIENCES, 2007, 19 (03) : 312 - 318
  • [10] Separation and detection of condensed phosphates in waste waters by ion chromatography coupled with flow injection
    Halliwell, DJ
    McKelvie, ID
    Hart, BT
    Dunhill, RH
    [J]. ANALYST, 1996, 121 (08) : 1089 - 1093