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Indexed by:期刊论文

Date of Publication:2018-11-01

Journal:DESALINATION AND WATER TREATMENT

Included Journals:SCIE

Volume:132

Page Number:307-316

ISSN No.:1944-3994

Key Words:Electro-Fenton; Internal circulation batch reactor; Response surface method; Methylene blue removal

Abstract:The influence of methyl alcohol (MA) and NaCl on methylene blue (MB) removal by electro-Fenton (EF) internal circulation batch reactor (ICBR) was studied. The response surface method (RSM) was used to obtain the optimal factor. The results indicated that MA has negative effects on MB removal in ICBR using the EF process but on the contrary NaCl has a positive influence. The pH is the most important factor in the existence of MA. MA could impede the target substrate MB degradation. The MB removal ratio will increase when the pH is in the neutral or alkaline condition and the coagulation mechanism becomes the main aspect. The EF process has no advantage on MB degradation when MA exists. When in the presence of NaCl the electricity and FeSO4 concentration became more influential. Because NaCl could generate Cl-2, which in turn produces HClO, it has good oxidation properties with higher pH. This study revealed that the EF process in ICBR has different oxidation mechanisms in various conditions. The results of this study could guide ICBR's practical application.