Bacteria poration on modified boron-doped diamond electrode surfaces induced by divalent cation chelation

2020 ◽  
Vol 6 (6) ◽  
pp. 1576-1587
Author(s):  
Meng-Hsuan Lin ◽  
Shafigh Mehraeen ◽  
Gang Cheng ◽  
Cory Rusinek ◽  
Brian P. Chaplin

This work showed that divalent ions from the outer membrane of bacteria can be chelated by N-propyl-2-hydroxyacetamide functional groups that were immobilized on boron-doped diamond electrodes.

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Alejandro Medel ◽  
Erika Bustos ◽  
Karen Esquivel ◽  
Luis A. Godínez ◽  
Yunny Meas

Electrochemical incineration using boron-doped diamond electrodes was applied to samples obtained from a refinery and compared to the photo-electro-Fenton process in order to selectively eliminate the phenol and phenolic compounds from a complex matrix. Due to the complex chemical composition of the sample, a pretreatment to the sample in order to isolate the phenolic compounds was applied. The effects of the pretreatment and of pH on the degradation of the phenolic compounds were evaluated. The results indicate that the use of a boron-doped diamond electrode in an electrochemical incineration process mineralizes 99.5% of the phenolic sample content. Working in acidic medium (pH = 1), and applying 2 A at 298 K under constant stirring for 2 hours, also results in the incineration of the reaction intermediates reflected by 97% removal of TOC. In contrast, the photo-electro-Fenton process results in 99.9% oxidation of phenolic compounds with only a 25.69% removal of TOC.


2020 ◽  
Vol 24 (11-12) ◽  
pp. 3245-3256 ◽  
Author(s):  
Izabelle Cristina da Costa Soares ◽  
Ámison Rick Lopes da Silva ◽  
Elaine Cristina Martins de Moura Santos ◽  
Elisama Vieira dos Santos ◽  
Djalma Ribeiro da Silva ◽  
...  

2013 ◽  
Vol 25 (7) ◽  
pp. 1734-1741 ◽  
Author(s):  
Ana Paula Pires Eisele ◽  
Débora Nóbile Clausen ◽  
César Ricardo Teixeira Tarley ◽  
Luiz Henrique Dall'Antonia ◽  
Elen Romão Sartori

2013 ◽  
Vol 39 ◽  
pp. 41-46 ◽  
Author(s):  
Polyana Fernandes Pereira ◽  
Mariana Cardoso Marra ◽  
Amanda Barbosa Lima ◽  
Wallans Torres Pio dos Santos ◽  
Rodrigo Alejandro Abarza Munoz ◽  
...  

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Armando Vázquez ◽  
Lucía Alvarado ◽  
Isabel Lázaro ◽  
Roel Cruz ◽  
José Luis Nava ◽  
...  

2-(Thiocyanomethylthio)-benzothiazole (TCMTB) is used as fungicide in the paper, tannery, paint, and coatings industries, and its study is important as it is considered toxic to aquatic life. In this study, a comparison of direct anodic oxidation (AO) using a boron-doped diamond electrode (BDD) and electro-Fenton (EF) processes for TCMTB degradation in acidic chloride and sulfate media using a FM01-LC reactor was performed. The results of the electrolysis processes studied in the FM01-LC reactor showed a higher degradation of TCMTB with the anodic oxidation process than with the electro-Fenton process, reaching 81% degradation for the former process versus 47% degradation for the latter process. This difference was attributed to the decrease in H2O2 during the EF process, due to parallel oxidation of chlorides. The degradation rate and current efficiency increased as a function of volumetric flow rate, indicating that convection promotes anodic oxidation and electro-Fenton processes. The results showed that both AO and EF processes could be useful strategies for TCMTB toxicity reduction in wastewaters.


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