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 Type:	Refereed Article
Research Division:	Chemical Sciences
Research Group:	Other Chemical Sciences
Research Field:	Environmental Chemistry (incl. Atmospheric Chemistry)
Objective Division:	Manufacturing
Objective Group:	Environmentally Sustainable Manufacturing
Objective Field:	Environmentally Sustainable Manufacturing not elsewhere classified
Author:	Southam, DC (Mr Daniel Southam)
Author:	Lewis, TW (Dr Trevor Lewis)
ID Code:	32384
Year Published:	2004
Web of Science® Times Cited:	26
Deposited By:	Chemistry
Deposited On:	2004-08-01
Last Modified:	2011-09-30
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