Phosphorus removal from wastewater using natural pyrrhotite

被引：35
|
作者：
Li, Ruihua [1 ,2 ]
Kelly, Cathal [2 ]
Keegan, Richard [2 ]
Xiao, Liwen [2 ]
Morrison, Liam [3 ]
Zhan, Xinmin [2 ]
机构：
[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210046, Jiangsu, Peoples R China
[2] Natl Univ Ireland, Coll Engn & Informat, Dept Civil Engn, Galway, Ireland
[3] Natl Univ Ireland, Sch Nat Sci, Galway, Ireland
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2013年 / 427卷
基金：
中国国家自然科学基金;
关键词：
Phpsphorus removal; Pyrrhotite; Adsorption; Wastewater treatment; ACID-MINE DRAINAGE; PHOSPHATE ADSORPTION; STABILIZATION POND; PYRITE; SLAG; OXIDATION; LIMESTONE; KINETICS; SORPTION; FILTERS;
D O I：
10.1016/j.colsurfa.2013.02.066
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：
Pyrrhotite is a common mineral on the earth and is used as a raw material for sulphuric acid production. This study explored the use of natural pyrrhotite mineral for phosphorus (P) removal from wastewater. With an initial P concentration of 17.1 mg/L, pyrrhotite removed 99.1% of P from aqueous solutions. P was removed over 90% as the initial pH of wastewater was in the range of 3.5 and 12. The temperature affected P removal, and the P removal efficiency was reduced from 99.1% to 88.4% as the temperature was decreased from 29 to 11 degrees C. P adsorption on pyrrhotite can be expressed with the Langmuir adsorption isotherm and pseudo second-order kinetics, indicating that the major mechanism of P removal by pyrrhotite would be chemisorption. This study shows that natural pyrrhotite is a good media for P removal from wastewater. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：13 / 18
页数：6
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