Retention of phosphorus by iron and aluminum-oxides-coated quartz particles

被引：81
作者：
Arias, M [1 ]
Da Silva-Carballal, J
García-Río, L
Mejuto, J
Núñez, A
机构：
[1] Univ Vigo, Fac Ciencias, Area Edafol & Quim Agr, Orense 32004, Spain
[2] Univ Vigo, Fac Ciencias, Dept Quim Fis, Orense 32004, Spain
[3] Univ Santiago de Compostela, Fac Quim, Dept Quim Fis, Santiago De Compostela, Spain
[4] Univ Santiago de Compostela, Escuela Politecn Super, Dept Edafol & Quim Agr, Lugo 27002, Spain
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2006年 / 295卷 / 01期
关键词：
wastewater treatment; P retention; aluminum oxides; iron oxides; quartz;
D O I：
10.1016/j.jcis.2005.08.001
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The capacity of adsorption of P on Fe and Al-oxides-coated quartz sand has been studied. The adsorption process has been described as Freundlich and Langmuir isotherms. In all cases Langmuir equation yields better fits than Freundlich equation. The covering quartz particles with Fe and At oxides provide a high capacity adsorption and immobilization of P from natural and waste waters. The values obtained for adsorption, desorption and adsorption/desorption cycles show that Al oxides particles provide an excellent material for construction of a P removal system for waste waters. The characteristics of this material would allow the design of a complementary filtration system to reduce P levels in the effluent, reducing contamination risks and combating eutrophication of nearby watercourses. (c) 2005 Elsevier Inc. All rights reserved.
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收藏
页码：65 / 70
页数：6
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