Use of Electrocoagulation with Aluminum Electrodes to Reduce Hardness in Tunisian Phosphate Mining Process Water; [Nutzung von Elektro-Koagulation mit Aluminiumelektroden für die Enthärtung von Prozesswasser im Phosphatbergbau in Tunesien]; [Uso de electrocoagulación con electrodos de aluminio para reducir la dureza en agua de la minería de fosfato en Túnez]

被引：0

作者：

Brahmi K. ^{[1
]}

Bouguerra W. ^{[1
]}

Belhsan H. ^{[2
]}

Elaloui E. ^{[2
]}

Loungou M. ^{[3
]}

Tlili Z. ^{[4
]}

Hamrouni B. ^{[1
]}

机构：

[1] U. R Traitement et Dessalement des Eaux, Dépt de Chimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, Manar II

[2] U. R Matériaux, Environnement et Energie, Dépt de Chimie, Univ Sidi Ahmed Zarroug, Gafsa

[3] Groupe Chimique Tunisian, Usine de M’Dhilla Gafsa, km 14, route M’Dhilla, Gafsa

[4] Higher Institute of Business Administration of Gafsa, Univ Sidi Ahmed Zarroug, Gafsa

来源：

Mine Water and the Environment | 2016年 / 35卷 / 3期

关键词：

Electrochemistry; Mine water treatment; Optimization of electrocoagulation parameters;

D O I：

10.1007/s10230-015-0354-4

中图分类号：

学科分类号：

摘要：

This study evaluated electrocoagulation using Al electrodes for removal of non-carbonate hardness in phosphate mining process water. Examination of process parameters identified optimal conditions for hardness removal at pH 7, a NaCl concentration of 4 g/L, a current density of 22.2 mA/cm2, an inter-electrode distance of 2 cm, a stirring speed of 450 revolutions per minute, and a treatment time of 30 min. Production of primary coagulant during electrolysis improved removal of both calcite and magnesium hydroxide. The optimized hardness removal was highly efficient, with an overall removal rate of 83.8 % at 30 min of retention time. © 2015, Springer-Verlag Berlin Heidelberg.

引用

页码：310 / 317

页数：7