PHOSPHORUS REMOVAL USING STEEL SLAG
来源期刊：Acta Metallurgica Sinica2006年第6期
论文作者：S. Zhang Y.Z. Lan R. W. Smith J.K. Wang
Key words：steel slag; waste water; phosphorus removal;
Abstract: Steel slag is a byproduct produced in large amounts in the steel-making process. It is an important resource that can be effectively utilized. An experiment was described in which steel slag was tested as an adsorbent for the removal of phosphorus from waste water. Phosphorus removal depended on the amount of steel slag added, the pH value, the contact time, and the initial concentration. Under laboratory conditions when the added slag was 7.5g/L, the contact time 2h, and the pH value was equivalent to 6.5, over 99% of the phosphorus was removed; the experimental data on steel slag adsorption of phosphorus in the water fitted the Freundlich isotherm model. Steel slag was found to be very effective in adsorbing phosphorus.
S. Zhang1，Y.Z. Lan1，R. W. Smith2，J.K. Wang3
(1.Engineering and Technology Research Institute, Yunnan University,Kunming 650091, China;
2.Metallurgical and Materials Department, Nevada University of Reno,NV89503 Nevada, USA;
3.Yunnan Metallurgy Group Company Limited, Kunming 650031, China)
Abstract:Steel slag is a byproduct produced in large amounts in the steel-making process. It is an important resource that can be effectively utilized. An experiment was described in which steel slag was tested as an adsorbent for the removal of phosphorus from waste water. Phosphorus removal depended on the amount of steel slag added, the pH value, the contact time, and the initial concentration. Under laboratory conditions when the added slag was 7.5g/L, the contact time 2h, and the pH value was equivalent to 6.5, over 99% of the phosphorus was removed; the experimental data on steel slag adsorption of phosphorus in the water fitted the Freundlich isotherm model. Steel slag was found to be very effective in adsorbing phosphorus.
Key words:steel slag; waste water; phosphorus removal;
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