Blast furnace slags as sorbents of phosphate from water solutions
Blast furnace slags as sorbents of phosphate from water solutions
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DOI：
10.1016/j.watres.2005.03.010
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发表时间：
2005-05-01
期刊：
影响因子：
12.8
通讯作者：
Lesko, J
中科院分区：
文献类型：
--
作者：
Kostura, B;Kulveitová, H;Lesko, J
本文主要研究了结晶态和非结晶态高炉渣对水溶液中磷的吸附。测定了炉渣的吸附动力学，进行了吸附试验，研究了酸化对炉渣吸附性能的影响。动力学测量证实，磷的吸附结晶以及无定形渣可以描述由一个模型，涉及伪二级反应。对于所有类型的炉渣，磷吸附遵循朗缪尔吸附等温线。测定了结晶渣和非结晶渣的酸中和能力。在结晶渣的情况下，缓冲间隔被发现存在，在此期间，渣矿物溶解在序列bredigite-gehlenite-diaspor。结晶渣和非晶渣的ANC（3.8）与饱和容量之间有很高的相关性（R-2 = 0.9989）。(c)2005爱思唯尔有限公司保留所有权利。
The paper is focused on the sorption of phosphorus from aqueous solutions by crystalline and amorphous blast furnace slags. Slag sorption kinetics were measured, adsorption tests were carried out and the effect of acidification on the sorption properties of slags was studied. The kinetic measurements confirmed that the sorption of phosphorus on crystalline as well as amorphous slags can be described by a model involving pseudo-second-order reactions. For all slag types, phosphorus sorption follows the Langmuir adsorption isotherm. The acid neutralizing capacities of crystalline and amorphous slags were determined. In the case of the crystalline slags, buffering intervals were found to exist during which the slag minerals dissolve in the sequence bredigite-gehlenite-diaspor. There is a high correlation (R-2 = 0.9989) between ANC(3.8) and the saturation capacities of crystalline and amorphous slags. (c) 2005 Elsevier Ltd. All rights reserved.