منابع مشابه
Flow Injection Spectrophotometric Determination of Sulphide by Catalytic Reduction of Toluidine Blue
Sulphide was determined spectrophotometrically at 628 nm and pH 6.7 based on its catalytic reduction of toluidine blue in the presence of Se(IV) using a flow injection system. After optimization of the measuring conditions the calibration curve was found linear up to 25 mg/mL and the detection limit was 0.3 mg/mL (30 mL injections). The ...
متن کاملKINETICS OF CARBOTHERMIC REDUCTION OF AN IRANIAN CELESTITE ORE
Two commercial methods are used for the production of strontium carbonate:1) Direct conversion of Celsetite to strontium carbonate by hot sodium carbonate,2) Carbothermic reduction of celestite with coal followed by water leaching of strontium sulfide(SrS) and its conversion to strontium carbonate.The present study has been made on the carbothermic reduction of celestite ores of Varamin (Iran) ...
متن کاملKinetics of the Birch Reduction
Because of contradictions in the literature, we reinvestigated the kinetics of the Birch reduction, i.e. the hydrogenation of benzene and its derivatives in metal ammonia solutions (MAS; containing solvated electrons e and metal cations M) with alcohols to yield the corresponding cyclohexa-1,4-dien compounds (e.g. 2Li+ 2CH3OH+C6H6)2CH3OLi+C6H8). The kinetics of this reaction are obscured since ...
متن کاملThe Influence of Microwaves on the Leaching Kinetics of Sulphide Minerals
The influence of microwave heating on the leaching kinetics of chalcopyrite and sphalerite has been investigated. Chalcopyrite is inert to many leaching agents, especially ferric ion media. This mineral is considered to be one of the largest sources of copper, in terms of the scale of availability, and copper is usually extracted by pyrometallurgical processes. However, there has recently been ...
متن کاملMetal reduction kinetics in Shewanella
MOTIVATION Metal reduction kinetics have been studied in cultures of dissimilatory metal reducing bacteria which include the Shewanella oneidensis strain MR-1. Estimation of system parameters from time-series data faces obstructions in the implementation depending on the choice of the mathematical model that captures the observed dynamics. The modeling of metal reduction is often based on Micha...
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ژورنال
عنوان ژورنال: Archives of Metallurgy and Materials
سال: 2015
ISSN: 2300-1909
DOI: 10.1515/amm-2015-0245