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Abstract:
A novel Al-Si-Fe-Ca composite material for phosphate removal in wastewater treatment was made by using Al(OH)3,Fe2O3,CaO and silica powder as raw materials. Sorption data modelling with a pH range of 3-12, P concentrations of 3,5,7,9, 11,13, 15mg L-1, and an ambient temperature of 23°C; indicated that an optimal removal of P occurred at pH 6.0. A maximum removal of 99.68% was found for 11mg L-1 (pH of 6). Langmuir isotherm best described theadsorption processwith a maximumadsorption capacity of 8.60mg g-1. Three kinetic models (apseudo-first-order, a pseudo-second-order(PSO) and Elovich) were also applied,and the results showed that the PSOmodel best described the data. SEM and EDAX analysis confirmed that P was adsorbed to the surface of the composite material. This study demonstrates that the composite adsorbent is suitable for use in wastewater treatment, with P removal of the solids being preferential and spontaneous. © (2014) Trans Tech Publications, Switzerland.
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ISSN: 0255-5476
Year: 2014
Volume: 787
Page: 128-134
Language: English
0 . 3 9 9
JCR@2005
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SCOPUS Cited Count: 1
ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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