Aqueous removal of diclofenac by plated elemental iron: Bimetallic systems

被引：103

作者：

Ghauch, Antoine ^{[1
]}

Abou Assi, Hala ^{[1
]}

Bdeir, Sara ^{[1
]}

机构：

[1] Amer Univ Beirut, Fac Arts & Sci, Dept Chem, Beirut 11072020, Lebanon

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 182卷 / 1-3期

关键词：

Diclofenac; Emerging contaminants; Fe-o/H2O systems; Bimetallics; HPLC/MS; ZERO-VALENT IRON; ATMOSPHERIC-PRESSURE PHOTOIONIZATION; PHARMACEUTICAL RESIDUES; ACTIVATED CARBON; GRANULAR IRON; MECHANISM; DEGRADATION; GROUNDWATER; CONTAMINANTS; REMEDIATION;

D O I：

10.1016/j.jhazmat.2010.05.139

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The aqueous removal of diclofenac (DF) by micrometric iron particles (Fe-o) and amended Fe-o (Me-o (Fe-o)) under oxic and anoxic conditions was investigated. Bimetallic systems were obtained by plating the surface of Fe with Co, Cu, Ir, Ni, Pd and Sn. Experimental results confirmed the superiority of (Me (Fe)) for DF removal except for IrFe (oxic) and SnFe (anoxic). Under anoxic conditions. Pd was by far the most efficient plating element followed by Ir, Ni, Cu, Co and Sn. However, under oxic conditions, Pd and Cu showed almost the same efficiency in removing DF followed by Ni, Co, Sn and Ir. Oxidative and reductive DF transformation products were identified under oxic and anoxic conditions respectively. In some systems (e.g. CoFe and SnFe oxic/anoxic; PdFe oxic: NiFe anoxic), no transformation products could be detected. This was ascribed to the nature of the plating element and its impact on the process of the formation of metal corrosion products (mCPs). MCPs are known for their high potential to strongly adsorb, bond, sequestrate and enmesh both the original contaminant and its reaction products. Obtained results corroborate the universal validity of the view, that aqueous contaminants are basically removed by adsorption and co-precipitation. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：64 / 74

页数：11

共 70 条

[1]

Alshaebi F. Y, 2009, EUR J SCI RES, V33, P214

[2] Mechanism and kinetic considerations of TOC removal from the powdered activated carbon ozonation of diclofenac aqueous solutions [J].

Beltran, Fernando J. ;

Pocostales, J. Pablo ;

Alvarez, Pedro M. ;

Jaramillo, Josefa .

JOURNAL OF HAZARDOUS MATERIALS, 2009, 169 (1-3) :532-538

[3] Treatment of inorganic contaminants using permeable reactive barriers [J].

Blowes, DW ;

Ptacek, CJ ;

Benner, SG ;

McRae, CWT ;

Bennett, TA ;

Puls, RW .

JOURNAL OF CONTAMINANT HYDROLOGY, 2000, 45 (1-2) :123-137

[4] Influence of transition metal additives and temperature on the rate of organohalide reduction by granular iron: Implications for reaction mechanisms [J].

Bransfield, Stephen J. ;

Cwiertny, David M. ;

Livi, Kenneth ;

Fairbrother, D. Howard .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 76 (3-4) :348-356

[5] ZERO-VALENT IRON FOR THE IN-SITU REMEDIATION OF SELECTED METALS IN GROUNDWATER [J].

CANTRELL, KJ ;

KAPLAN, DI ;

WIETSMA, TW .

JOURNAL OF HAZARDOUS MATERIALS, 1995, 42 (02) :201-212

[6] The remediation performance of a specific electrokinetics integrated with zero-valent metals for perchloroethylene contaminated soils [J].

Chang, JH ;

Cheng, SF .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 131 (1-3) :153-162

[7] Exploring the influence of granular iron additives on 1,1,1-trichloroethane reduction [J].

Cwiertny, David M. ;

Bransfield, Stephen J. ;

Livi, Kenneth J. T. ;

Fairbrother, D. Howard ;

Roberts, A. Lynn .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (21) :6837-6843

[8] Oxidative transformation of contaminants using colloidal zero-valent iron [J].

Feitz, AJ ;

Joo, SH ;

Guan, J ;

Sun, Q ;

Sedlak, DL ;

Waite, TD .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2005, 265 (1-3) :88-94

[9] Degradation of benomyl, picloram, and dicamba in a conical apparatus by zero-valent iron powder [J].

Ghauch, A .

CHEMOSPHERE, 2001, 43 (08) :1109-1117

[10] Catalytic degradation of chlorothalonil in water using bimetallic iron-based systems [J].

Ghauch, Antoine ;

Tuqan, Almuthanna .

CHEMOSPHERE, 2008, 73 (05) :751-759

← 1 2 3 4 5 6 7 →