Electrochemical inactivation of bacteria with a titanium sub-oxide reactive membrane

Water Research
Shangtao LiangQingguo Huang

Abstract

A reactive electrochemical membrane (REM) system was developed with titanium suboxide microfiltration membrane serving as the filter and the anode, and was examined to inactivate Escherichia coli (E. coli) in water at various current densities. After passing through the membrane filter, the concentration of E. coli decreased from 6.46 log CFU/mL to 0.18 log CFU/mL. The REM operation and effects, including membrane pressure, anode potential, protein leakage, and cell morphology, were characterized under different treatment conditions. It was found that several mechanisms, including membrane filtration, external electrical field influence, and direct oxidation, functioned in concert to lead to bacteria removal and inactivation, and direct oxidation likely played the major role. As revealed by scanning electron microscope and extracellular protein analysis, high current density and voltage caused severe cell damage that resulted in partial or complete cell disintegration. The removal of a model virus, bacteriophage MS2, was also investigated at the current density of 10 mA cm-2 and achieved 6.74 log reduction compared to the original concentration (1011 PFU/mL). In addition to illustration of mechanisms, this study may provide a p...Continue Reading

References

Jun 1, 1997·Applied and Environmental Microbiology·K A PresserT Ross
Nov 26, 1998·The Journal of Biological Chemistry·A CaselliG Ramponi
May 3, 2003·Water Research·Kevin P DreesRaina M Maier
Jan 26, 2005·Environmental Science & Technology·Mira Stone OlsonErik J Fernandez
Jul 31, 2007·Clinics in Laboratory Medicine·James W TungLeonore A Herzenberg
Apr 30, 2010·Water Research·Min ChoJae-Hong Kim
Aug 28, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Anna S Brady-EstévezMenachem Elimelech
Mar 11, 2011·Environmental Science & Technology·Chad D VecitisMenachem Elimelech
Feb 19, 2013·Environmental Science & Technology·Charles-François de LannoyMark R Wiesner
Apr 29, 2014·Environmental Science & Technology·Amr M Zaky, Brian P Chaplin
Jun 12, 2014·Frontiers in Microbiology·Laam LiSebastien P Faucher
Nov 26, 2015·Biofouling·Sujala T SultanaHaluk Beyenal
Feb 3, 2016·Scientific Reports·Flavien PilletMarie-Pierre Rols
Jun 11, 2016·Journal of Hazardous Materials·Lun GuoBrian P Chaplin
Jun 25, 2016·Environmental Science & Technology·Zheng-Yang HuoHong-Ying Hu
May 11, 2017·Environmental Science & Technology·Junjie WenXuesen Hong

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.