Journal ArticleDOI
Electrochemical determination of sulfide at various carbon substrates: a comparative study.
TLDR
The EPPG electrode has been clearly shown to be the substrate of choice for the direct electrochemical detection of sulfide and was applied to the recovery of a sulfide spike in river water, with a recovery of 104%.Abstract:
The direct electrochemical oxidation of sodium sulfide has been examined at five different carbon-based electrode substrates (glassy carbon (GC), boron-doped diamond (BDD), edge-plane pyrollytic graphite (EPPG), basal-plane pyrollytic graphite (BPPG) and carbon nanotubes (CNT)). An electrocatalytic response is observed at both the EPPG and CNT electrode compared to that of the other three substrates. The higher capacitative charging currents obtained at the CNT electrode hinder its detection range and, as such, the EPPG electrode has been clearly shown to be the substrate of choice for the direct electrochemical detection of sulfide. The procedure was applied to the recovery of a sulfide spike in river water, with a recovery of 104%.read more
Citations
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Journal ArticleDOI
Activated carbon cloth as anode for sulfate removal in a microbial fuel cell.
Feng Zhao,Nelli Rahunen,John R. Varcoe,Amreesh Chandra,Claudio Avignone-Rossa,Alfred E. Thumser,Robert C. T. Slade +6 more
TL;DR: By employing the sulfate-reducing bacterium Desulfovibrio desulfuricans, this approach demonstrates the possibility of electricity generation in a microbialfuel cell (MFC) with concomitant sulfate removal and shows significant potential for harvesting energy from sulfite-rich solutions in the form of electricity.
Journal ArticleDOI
In situ optimization of pH for parts-per-billion electrochemical detection of dissolved hydrogen sulfide using boron doped diamond flow electrodes.
Eleni Bitziou,Maxim B. Joseph,Tania L. Read,Nicola Palmer,Tim P. Mollart,Mark E. Newton,Julie V. Macpherson +6 more
TL;DR: This approach which offers local control of the pH of the detector electrode in a solution, which is far from ideal for optimized detection of the analyte of interest, enhances the capabilities of online electrochemical detection systems.
Journal ArticleDOI
Indirect determination of sulfide ions in water samples at trace level by anodic stripping voltammetry using mercury film electrode
TL;DR: A simple and sensitive indirect determination method for sulfide in water samples by anodic stripping voltammetry (ASV) using mercury-film electrode (MFE) has been developed, which is based on the determination of residual cadmium ion after reaction of Cd2+ with S2−.
Journal ArticleDOI
Controlled-Potential-Based Electrochemical Sulfide Sensors: A Review.
TL;DR: The efficiencies of the developed sulfide sensors for detecting sulfide in its various forms are determined, and the essential parameters, including sensing strategies, working electrodes, detection media, pH, LOD, sensitivity, and linear detection range, are emphasized.
Journal ArticleDOI
Electrochemical oxidation of sulphides in paper mill wastewater by using mixed oxide anodes
Heikki Särkkä,Kaisa Kuhmonen,Mikko Vepsäläinen,Martti Pulliainen,Jukka Selin,Pekka Rantala,Esko Kukkamäki,Mika Sillanpää +7 more
TL;DR: In this study, the electrochemical oxidation technique was used to oxidize sulphides present in paper mill wastewater and it can be said that sulphide removal was successful in the present study.
References
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Book
Chemistry of the elements
TL;DR: In this article, the origins of the elements, isotopes and atomic weights Chemical periodicity and the periodic table were discussed, including the following elements: Hydrogen Lithium, sodium, potassium, rubidium, caesium and francium Beryllium, magnesium, calcium, strontium, barium and radium Boron Aluminium, gallium, indium and thallium Carbon Silicon Germanium, tin and lead Nitrogen Phosphorus Arsenic, antimony and bismuth Oxygen Sulfur Selenium, tellurium
Journal ArticleDOI
Electrocatalysis at graphite and carbon nanotube modified electrodes: edge-plane sites and tube ends are the reactive sites
TL;DR: This article overviews recent work in this area which has led it to believe that much of the catalytic activity, electron transfer and chemical reactivity of graphitic carbon electrodes is at surface defect sites, and in particular edge-plane-like defect sites.
Book
A comprehensive guide to the hazardous properties of chemical substances
TL;DR: A glossary of physical properties of compounds and Hazardous Characteristics of Chemical Substances can be found in this paper, along with a detailed analysis of the properties of the compounds and their hazards.
Journal ArticleDOI
Exploring the electrocatalytic sites of carbon nanotubes for NADH detection: an edge plane pyrolytic graphite electrode study
TL;DR: It is demonstrated that a detection limit of 5 microM is possible with cyclic voltammetry or 0.3 microM using amperometry suggesting that edge plane pyrolytic graphite electrodes can conveniently replace carbon nanotube modified glassy carbon electrodes for biosensing applications with the relative advantages of reactivity, cost and simplicity of preparation.
Journal ArticleDOI
Investigation of modified basal plane pyrolytic graphite electrodes: definitive evidence for the electrocatalytic properties of the ends of carbon nanotubes.
TL;DR: The basis of the electrocatalytic nature of multi-wall carbon nanotubes is suggested to reside in electron transfer from the ends of nanotube, which structurally resemble the behaviour of edge plane graphite as discussed by the authors.