منابع مشابه
Growth Improvements of Sunflower Seedlings by Cr(VI)-Resistant Bacteria
In the present study, three chromium resistant bacterial strains (CrT-1, CrT-2, CrT-3) which could resist veryhigh concentration of K2CrO4 (up to 40 mg ml-1 on nutrient agar plates and 10 mg ml-1 in acetate-minimalmedium) were used to inoculate the sunflower seeds both as control and under chromium stress. Cr(VI)caused severe reduction in different growth parameters (seedling ...
متن کاملSimultaneous determinations of Cr(VI) and Cr(III) by ion-exclusion/cation-exchange chromatography with an unmodified silica-gel column.
In order to characterize the ion-exclusion and cation-exchange properties of an unmodified silica-gel column, the retention behaviors of Cr(VI) and Cr(III) ions were investigated using a Develosil 30-5 (150 x 4.6 mm i.d.) in the acidic region. Cr(VI) was separated from other anions by an ion-exclusion and ion-adsorption mechanism, and Cr(III) was separated from other cations with a cation-excha...
متن کاملBIOLOGICAL Cr(VI) REDUCTION
Scientific interest on chromium removal from water and wastewater has escalated recently. Chromium compounds exist in the environment naturally but are mostly found due to anthropogenic activities (tanning, paint, cement industries, etc.). Hexavalent chromium [Cr(VI)] is of major environmental importance because it is one of the most stable chromium forms found in the environment. It is soluble...
متن کاملجذب (Cr (VI توسط MLSS.جذب (Cr (VI توسط MLSS در رآکتورهای بسته لجن فعال
ABSTRACT In this research which was performed with bench Scale, Adsorption of Cr(VI) from Industrial wastewater was studied & biological method of Activated sludge batch flow reactors utilized. This study indicated that Cr(VI) at first adsorped with cell walls of bacteria & then after Sedimentation it was intered to sludge & finally was removed from effluent. In this study Cr (VI) adsorption ...
متن کاملKinetics of Oxidation of Allyl Alcohol by Cr(VI)
The kinetics of oxidation of allyl alcohol by quinaldinium chlorochromate is investigated in 40 % acetic acid – water (v/v) medium. The order with respect to oxidant and hydrogen ion concentration is found to be one and fractional with respect to substrate. The rate of the reaction is decreases with the decrease in the dielectric constant of the medium. The rate of the reaction has negligible e...
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ژورنال
عنوان ژورنال: Journal of the Ceramic Association, Japan
سال: 1986
ISSN: 1884-2127,0009-0255
DOI: 10.2109/jcersj1950.94.1094_1106