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2012 (Vol. 4, Issue: 6)
Article Information:

Adsorption Control Performance of Phosphorus Removal from Agricultural Non-Point Source Pollution by Nano-Aperture Lanthanum-modified Active Alumina

Hong-Bing Luo, Fei Li, Hao Lv, Ying-Mei Zeng, Ke Zhang and 1Bo Huang
Corresponding Author:  Hong-Bing Luo 

Key words:  Activated alumina, agricultural non-point source pollution, lanthanum-modified, phosphorus adsorption, , ,
Vol. 4 , (6): 337-343
Submitted Accepted Published
August 31, 2012 September 24, 2012 December 20, 2012
Abstract:

It is great significance to control the phosphorus pollution from agricultural non-point source pollution. In this study, adsorption control performance of phosphorus removal from agricultural non-point source pollution by manual nano-aperture Lanthanum-modified active alumina was a great inspiring from urban-rural-integration-area. About 10 to 30 nanometers aperture on granule surfaces from the active alumina (&gamma-Al2 O3 which average sphere diameters is 3 mm, was formed after modification from Lanthanum (III) chloride. Results show that the adsorption performance of phosphorus removal by using nano-aperture Lanthanum-modified active alumina was much higher percent 50% than active alumina under the optimum condition of pH (pH = 4), adsorption time (12 h) and adsorption dosage of Lanthanum-modified active alumina (0.2 g/50 mL). The adsorption performance of phosphorus removal by nano-aperture Lanthanum-modified active alumina can reach the percentage of 96 from water samples in agricultural non-point source pollution. The adsorption kinetic accorded with the Pseudo-Second-order Kinetic Equations (R2 = 0.9955). The isothermal adsorption property was described by the Langmuir Equation (R2 = 0.9982) which the biggest adsorption capacity was 0.257 mg/g. The average removal efficiency of phosphorus from general farmland, corn field, paddy field, vegetable land was above 92%. It is very evident that the nano-aperture Lanthanum-modified active alumina will be a promising material for phosphorus removal control from agricultural non-point source pollution.
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  Cite this Reference:
Hong-Bing Luo, Fei Li, Hao Lv, Ying-Mei Zeng, Ke Zhang and 1Bo Huang, 2012. Adsorption Control Performance of Phosphorus Removal from Agricultural Non-Point Source Pollution by Nano-Aperture Lanthanum-modified Active Alumina.  Advance Journal of Food Science and Technology, 4(6): 337-343.
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ISSN (Online):  2042-4876
ISSN (Print):   2042-4868
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