Photocatalytic ozonation of monuron over suspended and immobilized TiO2-study of transformation, mineralization and economic feasibility

被引：12

作者：

Simon, Gergo ^{[1
,2
,3
]}

Gyulavari, Tamas ^{[2
,4
]}

Hernadi, Klara ^{[2
,4
]}

Molnar, Milan ^{[1
,3
]}

Pap, Zsolt ^{[2
,5
,6
,7
]}

Vereb, Gabor ^{[2
,8
]}

Schrantz, Krisztina ^{[1
,3
]}

Nafradi, Mate ^{[1
,3
]}

Alapi, Tunde ^{[1
,3
]}

机构：

[1] Univ Szeged, Inst Chem, Res Grp Environm Analyt Chem, Dom Ter 7, H-6720 Szeged, Hungary

[2] Univ Szeged, Inst Chem, Res Grp Environm Chem, Tisza Lajos Krt 103, H-6720 Szeged, Hungary

[3] Univ Szeged, Inst Chem, Dept Inorgan & Analyt Chem, Dom Ter 7, H-6720 Szeged, Hungary

[4] Univ Szeged, Dept Appl & Environm Chem, Inst Chem, Rerrich Bela Ter 1, H-6720 Szeged, Hungary

[5] Babes Bolyai Univ, Fac Phys, M Kogalniceanu 1, RO-400084 Cluj Napoca, Romania

[6] Inst Interdisciplinary Res Bionanosci, Treboniu Laurian 42, RO-400271 Cluj Napoca, Romania

[7] Univ Szeged, Inst Environm Sci & Technol, Tisza Lajos Krt 103, HU-6720 Szeged, Hungary

[8] Univ Szeged, Fac Engn, Dept Proc Engn, Moszkvai Krt 9, H-6725 Szeged, Hungary

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2018年 / 356卷

关键词：

TiO2; immobilization; Monuron; Photocatalysis; Photocatalytic ozonation; Ozone; Electric energy per order; CATALYSTS STRUCTURAL PECULIARITIES; ADVANCED OXIDATION PROCESSES; PHENYLUREA HERBICIDES; AQUEOUS-SOLUTION; WATER-TREATMENT; INTERMEDIATES IDENTIFICATION; INDUCED DEGRADATION; ENERGY-CONSUMPTION; COST-EFFECTIVENESS; ORGANIC-COMPOUNDS;

D O I：

10.1016/j.jphotochem.2018.01.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The transformation and mineralization of monuron herbicide were investigated by heterogeneous photocatalysis, ozonation, and their combination (photocatalytic ozonation) at various ozone (O-3) concentrations (0-20 mg dm(-3) in gas phase), using TiO2 in suspensions and in immobilized form. The applied AOPs were characterized by the transformation and mineralization rate of monuron, the concentration of dissolved O-3, and the economic feasibility based on the values of Electrical Energy per Order related to the rate of decrease of monuron concentration and of the total organic carbon content. In the case of photocatalytic ozonation, the transformation and mineralization rate of monuron increased with the increase of O-3 concentration. However, there was no significant synergistic effect. Electrical Energy per Order decreased with the increase of O-3 concentration, and economical efficiency of the photocatalytic ozonation using TiO2 in suspensions highly exceed that of both ozonation and heterogeneous photocatalysis regarding the value determined for the decrease of total organic carbon content. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：512 / 520

页数：9

共 64 条

[1] Photocatalytic ozonation to remove the pharmaceutical diclofenac from water: Influence of variables [J].