Abstract Plasma in hydrogen-containing atmospheres is an efficient method for the reduction of iron oxides. Although a vast number approaches were performed bulk Fe oxides with thermal hydrogen plasmas, there almost no information about non-thermal plasma efficiency atmospheric pressure range. In current article we present natively oxidized surfaces applying dielectric barrier discharge Ar/H 2 ...

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The reductive dissolution of Fe-oxide driven by organic matter oxidation is the primary mechanism accepted for As mobilization in several alluvial aquifers. These processes are often mediated by microorganisms that require a minimum Gibbs energy available to conduct the reaction in order to sustain their life functions. Implementing this threshold energy in reactive transport modeling is rarely...

in this paper, two-dimensional heat transfer in a semi-infinite wall with fins of rectangular profile has been investigated. the conduction equations of the wall and fins are solved simultaneously by a numerical method. the principal parameters of the problem are the fin spacing, length, and fin-to-wall conductivity ratio. in this investigation, the effect of these parameters on two-dimensional...