Electrochemical Degradation of Reactive Black 5 Using Three-Dimensional Electrochemical System Based on Multiwalled Carbon Nanotubes

被引：29

作者：

Mengelizadeh, Nezamaddin ^{[1
]}

Pourzamani, Hamidreza ^{[2
,3
]}

Saloot, Morteza Khodadadi ^{[4
]}

Hajizadeh, Yaghoub ^{[2
,3
]}

Parseh, Iman ^{[5
]}

Parastar, Saeed ^{[6
]}

Niknam, Noureddin ^{[7
]}

机构：

[1] Larestan Univ Med Sci, Evaz Sch Hlth, Dept Environm Hlth Engn, Res Ctr Hlth Safety & Environm, POB 74318-95659, Larestan, Iran

[2] Isfahan Univ Med Sci, Res Inst Primordial Prevent Noncommunicable Dis, Environm Res Ctr, Esfahan 8174673461, Iran

[3] Isfahan Univ Med Sci, Sch Hlth, Student Res Comm, Dept Environm Hlth Engn, Esfahan, Iran

[4] Islamic Azad Univ, Sci & Res Branch, Fac Nat Resources & Environm, Dept Environm Engn, Tehran 1477893885, Iran

[5] Behbahan Fac Med Sci, Dept Environm Hlth Engn, Behbahan 6361796819, Iran

[6] Ardabil Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Ardebil 5618953141, Iran

[7] Iran Univ Med Sci, Sch Hlth Management & Med Informat, Hlth Care Management, Tehran 1996713883, Iran

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING | 2019年 / 145卷 / 05期

关键词：

Three-dimensional electrochemical system; Multiwalled carbon nanotubes; Particle electrode; Reactive Black 5; Degradation; ENHANCED ELECTROCATALYTIC REMOVAL; RESPONSE-SURFACE METHODOLOGY; WASTE-WATER; ELECTRO-FENTON; AQUEOUS-SOLUTION; PARTICLE ELECTRODES; ACTIVATED CARBON; METHYL-ORANGE; DYE; OPTIMIZATION;

D O I：

10.1061/(ASCE)EE.1943-7870.0001517

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The removal of Reactive Black 5 (RB5) dye and chemical oxygen demand (COD) was investigated using a three-dimensional (3D) electrochemical (3DE) reactor with multiwalled carbon nanotubes (MWCNTs). The experiments were performed according to a Taguchi design model, with the variables being the solution pH (2-9), current density (10-25mA/cm2), reaction time (15-60min), MWCNT concentration (25-200mg/L), and RB5 concentration (25-100mg/L). The best conditions for optimum removal of RB5 and COD were pH 3, MWCNT concentration 200mg/L, current density 15mA/cm2, RB5 concentration 100mg/L, and reaction time 60min. Among the main factors, the solution pH for removal of COD and RB5 and the current density for energy consumption had the highest impact. The 3D system generated more H2O2 and OH radicals compared with a two-dimensional (2D) system because the MWCNTs act as microelectrodes in the optimal conditions. In the 3D process, the production of high levels of reactive species led to an increase in the degradation of RB5 into aromatic compounds and various acids.

引用

页数：13

共 74 条

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