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We developed an innovative strategy to address the inhibition of anode-respiring bacteria due to voltage reversal in serially stacked microbial fuel cells by inducing cathodic voltage reversal and HO production. When platinum-coated carbon (Pt/C) cathodes were employed (stacked MFC) and the MFC was operated with acetate medium, the last unit (MFC 4) caused a voltage reversal of -0.8 V with a substantial anode overpotential of 1.22 V. After replacing the Pt/C cathode with a Pt-free carbon gas diffusion electrode in MFC 4, an electrode overpotential, approximately 0.5 V, was shifted from the anode to the cathode, inducing cathodic voltage reversal. Under cathodic voltage reversal, MFC 4 generated HO at a production rate of 117 mg HO/m-h. Hence, under cathodic voltage reversal induced by Pt-free cathodes, due to less anode polarization, the anode-respiring activity can largely be sustained in a stacked MFC that treats organic wastewater consistently and the quality of treated wastewater may be improved with energy-efficient and on-site generated HO.
This article was published in the following journal.
Name: Journal of environmental management
Excellent ionic conductivity and small size of hydrogen ion make it an ideal charge carrier for hydrogen-ion based fast energy storage (HES); however, the high-voltage two-electrode configurations are...
A simple co-precipitation technique is proposed for synthesis of tin oxide (SnO) microrods. Stannous chloride and urea were used during synthesis. X-ray powder diffraction (XRD) analysis revealed that...
Cathodic corrosion is an electrochemical etching process which alters metallic surfaces by creating nanoparticles and a variety of etching features. Because these features typically have a preferentia...
The liquid phase plasma (LPP) method with a TiO photocatalyst and hydrogen peroxide was used to decompose dimethyl phthalate (DMP). As the applied voltage, pulse width, and frequency were increased, t...
This study investigated whether it is possible to achieve equally satisfactory results between 37.5% hydrogen peroxide (HP) gel and 6% HP gel. We also assessed the psychosocial impact and self-percept...
To determine the effectiveness of combining different concentrations of hydrogen peroxide and carbamide used during tooth bleaching.
There have been many adjunctive treatments for the additional clinical benefits to scaling and root planing (SRP) in the treatment of chronic periodontitis. Topical hydrogen peroxide (HP) ...
To evaluate the efficacy, safety and impact on quality of life related to oral health of home and office tooth whitening techniques in young individuals.
The purpose of this research study is to test the safety of an oxygen producing gel (produced by combining baking soda and hydrogen peroxide) and see what effects (good and bad) it has on ...
This Pilot study evaluates the use of a new device called Inflammacheck and whether it can consistently measure hydrogen peroxide levels in exhaled breath condensate. It will also assess w...
An oxidoreductase that catalyzes the reaction between superoxide anions and hydrogen to yield molecular oxygen and hydrogen peroxide. The enzyme protects the cell against dangerous levels of superoxide. EC 18.104.22.168.
Peroxidase catalyzed oxidation of lipids using hydrogen peroxide as an electron acceptor.
A hemeprotein which catalyzes the oxidation of ferrocytochrome c to ferricytochrome c in the presence of hydrogen peroxide. EC 22.214.171.124.
An enzyme of the oxidoreductase class that catalyzes the conversion of beta-D-glucose and oxygen to D-glucono-1,5-lactone and peroxide. It is a flavoprotein, highly specific for beta-D-glucose. The enzyme is produced by Penicillium notatum and other fungi and has antibacterial activity in the presence of glucose and oxygen. It is used to estimate glucose concentration in blood or urine samples through the formation of colored dyes by the hydrogen peroxide produced in the reaction. (From Enzyme Nomenclature, 1992) EC 126.96.36.199.
An oxidoreductase that catalyzes the conversion of HYDROGEN PEROXIDE to water and oxygen. It is present in many animal cells. A deficiency of this enzyme results in ACATALASIA.