NDLI: Statistical optimization of industrial textile wastewater treatment by electrochemical methods

Content Provider	Springer Nature Link
Author	GilPavas, Edison Medina, José Dobrosz Gómez, Izabela Gómez García, Miguel Angel
Copyright Year	2014
Abstract	In this work, the Box–Behnken experimental design and the surface response methodology were applied for the optimization of the operational conditions of the electro-catalytic degradation of wastewaters, resulting from a local textile industry. The experiments were carried out in a laboratory scale batch cell reactor, with monopolar configuration, and electrodes made of boron-doped diamond (anode) and titanium (cathode). The multifactorial experimental design included the following variables: current density (i: 5–10 mA/cm$^{2}$), pH (3–7), and submerged cathode area (CA: 8–24 cm$^{2}$). To determine the process efficiency, the degradation percentage of: the chemical oxygen demand (%DCOD), the total organic carbon (%DTOC) and the color (%DC) were defined as response variables. The following optimal conditions for the electro-oxidation (EO) process were obtained: i = 10 mA/cm$^{2}$, pH = 3 and CA = 16 cm$^{2}$, reaching ca. 92 % of DC, 37 % of DCOD and 31 % of DTOC. The electro-Fenton (EF) and photo-electro-Fenton (PEF) processes were also evaluated at EO optimal conditions. For the EF process, with addition of iron (0.3 mM), the %DC, %DCOD and %DTOC was enhanced to 95, 52 and 45 %, respectively. For the PEF process (UV = 365 nm), it was possible to reach 98 %DC, 56 %DCOD and 48 %DTOC.
Starting Page	1421
Ending Page	1430
Page Count	10
File Format	PDF
ISSN	0021891X
Journal	Journal of Applied Electrochemistry
Volume Number	44
Issue Number	12
e-ISSN	15728838
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-10-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electro-oxidation Statistical optimization Boron-doped diamond Textile effluents Electro-Fenton Photo-electro-Fenton Electrochemistry Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Chemical Engineering Electrochemistry

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