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Removal of Phosphate Anions from Aqueous Solutions Using Dolomite as Adsorbent

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Abstract:

Dolomite, an industrial solid material was used as an adsorbent to remove phosphate anions from wastewater. The effects of initial pH, initial phosphate concentration, reaction time, reaction temperature and adsorbent dosage on the phosphate removal efficiency were investigated. The results show that the phosphate removal efficiency exceed 99% under the conditions of pH 9.5, temperature 30 °C, reaction time 50 min, particle size <0.074 mm, initial phosphate concentration 50 mg•L-1, adsorbent dosage 10g•L-1 and stirring speed 250 r/min. After phosphate removal reaction, the residual phosphate concentrations completely meet the requirement of national discharge standards of the second category pollution (GB 1A (TP = 0.5 mgL-1)).

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Periodical:

Advanced Materials Research (Volumes 864-867)

Pages:

1454-1457

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.864-867.1454

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Online since:

December 2013

Authors:

Xiao Li Yuan, Wen Tang Xia, Juan An, Wen Qiang Yang, Jian Guo Yin

Keywords:

Adsorptive Method, Dolomite, Phosphate Removal, Phosphate-Containing Wastewater

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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