Diclofenac degradation using mont-La (6%)-Cu0.6Cd0.4S as photocatalyst under NUV-Vis irradiation. Operational parameters, kinetics and mechanism

被引：23

作者：

Boukhatem, Horiya ^{[1
,2
,3
,4
]}

Khalaf, Hussein ^{[2
]}

Djouadi, Lila ^{[2
]}

Marin, Zenydia ^{[3
,4
]}

Manuel Navarro, Rufino ^{[5
]}

Arturo Santaballa, J. ^{[3
,4
]}

Canle, Moises ^{[3
,4
]}

机构：

[1] Univ Djilali BOUNAAMA Khemis Miliana, Fac Sci & Technol, Dept Sci Matiere, Route Theniet El Had, Khemis Miliana 44001, Algeria

[2] Univ Saad DAHLEB Blida 1, Fac Technol, Dept Genie Proc, Lab Genie Chim, BP270, Blida 09000, Algeria

[3] Univ A Coruna, Fac Sci, Dept Chem, Chem React & Photoreact Grp, E-15071 La Coruna, Spain

[4] Univ A Coruna, CICA, E-15071 La Coruna, Spain

[5] CSIC, Inst Catalisis & Petroleoquim, C Marie Curie 2, E-28049 Madrid, Spain

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2017年 / 5卷 / 06期

关键词：

Photocatalysis; Semiconductor sulfides; Diclofenac; UV-Vis; Pollution abatement; Persistent organic pollutants; Modified clays; Montmorillonite; Nanocomposites; TRANSFORMATION PRODUCTS; DRUG DICLOFENAC; GRAPHENE OXIDE; PHOTODEGRADATION; WATER; PHENOL; SULFAMETHOXAZOLE; DECOMPOSITION; NANOPARTICLES; REMOVAL;

D O I：

10.1016/j.jece.2017.10.054

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We report the aqueous photodegradation -under NUV-Vis radiation-of diclofenac, a common non-steroidal anti-inflammatory drug found to be persistent in the environment, using mont-La(6%)-Cu0.6Cd0.4S, a nanocomposite prepared by simple cation exchange and impregnation method. Operational parameters relevant for the process have optimized: amount of catalyst, dissolved oxygen concentration, initial diclofenac concentration and pH. Heterogeneous suspensions of 1 g L-1 of mont-La(6%)-Cu0.6Cd0.4S nanocomposite allowed removal of ca. 92% of 10 mg L-1 solution of diclofenac at pH = 5.9 with natural dissolved oxygen from air within 240 min, meanwhile TOC removal was 67%. The photocatalytic process is adequately described by the Langmuir-Hinshelwood kinetic model, following apparent pseudo-first order kinetics. A suitable reaction mechanism has been proposed, based on the available kinetic evidences and the reaction products observed by HPLC-MS analysis.

引用

页码：5636 / 5644

页数：9

共 47 条

[1] Photodegradation of methylene blue dye by the UV/H2O2 and UV/acetone oxidation processes [J].

Banat, F ;

Al-Asheh, S ;

Al-Rawashdeh, M ;

Nusair, M .

DESALINATION, 2005, 181 (1-3) :225-232

[2] Photocatalytic activity of mont-La (6%)-Cu0.6Cd0.4S catalyst for phenol degradation under near UV visible light irradiation [J].

Boukhatem, H. ;

Khalaf, H. ;

Djouadi, L. ;

Gonzalez, F. V. ;

Navarro, R. M. ;

Santaballa, J. A. ;

Canle, M. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 211 :114-125

[3]

Boukhatem H., 2014, J CATAL MAT ENV, VXI

[4] Photocatalytic degradation study of diclofenac over aqueous TiO2 suspensions [J].

Calza, P. ;

Sakkas, V. A. ;

Medana, C. ;

Baiocchi, C. ;

Dimou, A. ;

Pelizzetti, E. ;

Albanis, T. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 67 (3-4) :197-205

[5] Photocatalytic decomposition of diclofenac potassium using silver-modified TiO2 thin films [J].

Cavalheiro, A. A. ;

Bruno, J. C. ;

Saeki, M. J. ;

Valente, J. P. S. ;

Florentino, A. O. .

THIN SOLID FILMS, 2008, 516 (18) :6240-6244

[6] Coupling TiO2 nanotubes photoelectrode with Pd nano-particles and reduced graphene oxide for enhanced photocatalytic decomposition of diclofenac and mechanism insights [J].

Cheng, Xiuwen ;

Deng, Xiaoyong ;

Wang, Pu ;

Liu, Huiling .

SEPARATION AND PURIFICATION TECHNOLOGY, 2015, 154 :51-59

[7] Pharmaceuticals in the aquatic environment: A critical review of the evidence for health effects in fish [J].

Corcoran, Jenna ;

Winter, Matthew J. ;

Tyler, Charles R. .

CRITICAL REVIEWS IN TOXICOLOGY, 2010, 40 (04) :287-304

[8] Photocatalytic degradation of drugs by supported titania-based catalysts produced from petrochemical plant residue [J].

da Silva, William Leonardo ;

Lansarin, Marla Azario ;

Livotto, Paolo Roberto ;

dos Santos, Joao Henrique Z. .

POWDER TECHNOLOGY, 2015, 279 :166-172

[9] Efficacy of the Reactive Oxygen Species Generated by Immobilized TiO2 in the Photocatalytic Degradation of Diclofenac [J].

Di Credico, B. ;

Bellobono, I. R. ;

D'Arienzo, M. ;

Fumagalli, D. ;

Redaelli, M. ;

Scotti, R. ;

Morazzoni, F. .

INTERNATIONAL JOURNAL OF PHOTOENERGY, 2015, 2015

[10] Ecotoxicity of ketoprofen, diclofenac, atenolol and their photolysis byproducts in zebrafish (Danio rerio) [J].

Diniz, M. S. ;

Salgado, R. ;

Pereira, V. J. ;

Carvalho, G. ;

Oehmen, A. ;

Reis, M. A. M. ;

Noronha, J. P. .

SCIENCE OF THE TOTAL ENVIRONMENT, 2015, 505 :282-289

← 1 2 3 4 5 →