The pH as a key parameter in the choice between coagulation and electrocoagulation for the treatment of wastewaters

被引：144

作者：

Canizares, Pablo ^{[1
]}

Jimenez, Carlos ^{[1
]}

Martinez, Fabiola ^{[1
]}

Rodrigo, Manuel A. ^{[1
]}

Saez, Cristina ^{[1
]}

机构：

[1] Univ Castilla La Mancha, Fac Ciencias Quim, Dept Chem Engn, Ciudad Real 13005, Spain

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 163卷 / 01期

关键词：

Aluminum; Electrocoagulation; Coagulation; Door-manufacturing wastes; O/W emulsions; TEXTILE WASTE-WATER; NATURAL ORGANIC-MATTER; ALUMINUM-CHLORIDE; FLOCCULATION; SPECIATION; SALTS;

D O I：

10.1016/j.jhazmat.2008.06.073

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, it is studied the influence of the pH of the waste in the coagulation with aluminum by conventional and electrochemical dosing. To do that, the speciation of aluminum as a function of the pH has been characterized, and this information has been used to interpret the results obtained in the treatments (by both coagulation methods) of a synthetic oil-in-water emulsion and an actual effluent of a door-manufacturing factory. Results show that a simple change in the pH of the wastes can result in a significant change in the efficiency of the coagulation process, and that if the same pH conditions are found at the end of the treatment, the efficiencies of the solution-dosing and of the electrochemical dosing technologies are very similar. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：158 / 164

页数：7

共 23 条

[1] Coagulation of polymeric wastewater discharged by a chemical factory [J].

Al-Malack, MH ;

Abuzaid, NS ;

El-Mubarak, AH .

WATER RESEARCH, 1999, 33 (02) :521-529

[2] Treatment of the textile wastewater by electrocoagulation Economical evaluation [J].

Bayramoglu, Mahmut ;

Eyvaz, Murat ;

Kobya, Mehmet .

CHEMICAL ENGINEERING JOURNAL, 2007, 128 (2-3) :155-161

[3] INVESTIGATION OF THE HYDROLYSIS OF AQUEOUS-SOLUTIONS OF ALUMINUM-CHLORIDE .2. NATURE AND STRUCTURE BY SMALL-ANGLE X-RAY-SCATTERING [J].

BOTTERO, JY ;

TCHOUBAR, D ;

CASES, JM ;

FLESSINGER, F .

JOURNAL OF PHYSICAL CHEMISTRY, 1982, 86 (18) :3667-3673

[4] STUDIES OF HYDROLYZED ALUMINUM-CHLORIDE SOLUTIONS .1. NATURE OF ALUMINUM SPECIES AND COMPOSITION OF AQUEOUS-SOLUTIONS [J].

BOTTERO, JY ;

CASES, JM ;

FIESSINGER, F ;

POIRIER, JE .

JOURNAL OF PHYSICAL CHEMISTRY, 1980, 84 (22) :2933-2939

[5] Electrodissolution of aluminum electrodes in electrocoagulation processes [J].

Cañizares, P ;

Carmona, M ;

Lobato, J ;

Martínez, F ;

Rodrigo, MA .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (12) :4178-4185

[6]

CANIZARES P, INT J ENV P IN PRESS

[7] Coagulation and electrocoagulation of oil-in-water emulsions [J].

Canizares, Pablo ;

Martinez, Fabiola ;

Jimenez, Carlos ;

Saez, Cristina ;

Rodrigo, Manuel A. .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 151 (01) :44-51

[8] Study of the electrocoagulation process using aluminum and iron electrodes [J].

Canizares, Pablo ;

Jimenez, Carlos ;

Martinez, Fabiola ;

Saez, Cristina ;

Rodrigo, Manuel A. .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (19) :6189-6195

[9] Coagulation and electrocoagulation of wastes polluted with colloids [J].

Canizares, Pablo ;

Martinez, Fabiola ;

Jimenez, Carlos ;

Lobato, Justo ;

Rodrigo, Manuel A. .

SEPARATION SCIENCE AND TECHNOLOGY, 2007, 42 (10) :2157-2175

[10] Coagulation and electrocoagulation of wastes polluted with dyes [J].

Canizares, Pablo ;

Martinez, Fabiola ;

Jimenez, Carlos ;

Lobato, Justo ;

Rodrigo, Manuel A. .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (20) :6418-6424

← 1 2 3 →