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Amorphous calcium silicate as a chemisorbent for phosphate


Southam, DC and Lewis, TW and McFarlane, AJ and Johnston, JH, Amorphous calcium silicate as a chemisorbent for phosphate, Current Applied Physics, 4, (40270) pp. 355-358. ISSN 1567-1739 (2004) [Refereed Article]

DOI: doi:10.1016/j.cap.2003.11.047


Amorphous calcium silicate (ACS), a novel silicate material developed as filler for use in paper manufacture, has shown an affinity for the chemisorption of orthophosphate from an aqueous solution obeying a Freundlich isotherm. Removal efficiencies of up to 100% were achieved at environmental- and waste-scale concentrations of phosphate of between 0.01 and 100 mg P l-1. Chemisorption studies indicated loadings up to 1.9 mmol HxPO4 (3-x)- g-1 ACS were achievable. Kinetics studies comparing the rate of consumption of phosphate have shown that 2PO4 - is kinetically favoured and chemisorbed with higher loadings, and hence greater efficiency. This is a significant improvement on other adsorbent-based methods for the removal of phosphate. © 2003 Elsevier B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Atmospheric sciences
Research Field:Atmospheric composition, chemistry and processes
Objective Division:Manufacturing
Objective Group:Environmentally sustainable manufacturing activities
Objective Field:Environmentally sustainable manufacturing activities not elsewhere classified
UTAS Author:Southam, DC (Mr Daniel Southam)
UTAS Author:Lewis, TW (Associate Professor Trevor Lewis)
ID Code:32384
Year Published:2004
Web of Science® Times Cited:37
Deposited By:Chemistry
Deposited On:2004-08-01
Last Modified:2011-09-30

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