Investigation of Leaching Kinetics of Ulexite Waste in Oxalic Acid Solutions

被引：4
|
作者：
Bayca, S. U. [1 ]
Kocan, F. [2 ]
Abali, Y. [2 ]
机构：
[1] Kirikkale Univ, Fac Engn, Dept Met & Mat Engn, TR-71450 Yahsihan, Kirikkale, Turkey
[2] Celal Bayar Univ, Sci & Arts Fac, Dept Chem, TR-45030 Muradiye, Manisa, Turkey
来源：
CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY | 2014年 / 28卷 / 03期
关键词：
ulexite waste; leaching kinetics model; dissolution; boric acid; oxalic acid; DISSOLUTION KINETICS; SULFURIC-ACID; NATURAL MAGNESITE; COLEMANITE; MECHANISM; ORE;
D O I：
10.15255/CABEQ.2013.1860
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The dissolution of ulexite waste in oxalic acid solutions was studied in a batch reactor after characterization of the waste by X-ray diffiaction (XRD) analysis and X-ray fluorescence (XRF) analysis. The dissolution parameters in this study were acid concentration, stirring rate, and reaction temperature. The experimental data were examined using homogeneous and heterogeneous kinetic models, and the dissolution kinetics of the waste was determined to be a first-order reaction control model. The activation energy of ulexite waste in oxalic acid solution was also calculated. It was observed that the dissolution rate increased with increasing reaction temperature, stirring rate and acid concentration. The kinetic model of the dissolution process was determined to be a first-order reaction control model. The activation energy was found to be 41.09 kJ mol(-1).
引用
收藏
页码：273 / 280
页数：8
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