Chromium(VI) Reduction
Chromium (VI) Reduction Kinetics by Zero-valent Aluminum
... undesirable chromium species include traditional chemical reduction, electrochemical methods (including electrocoagulation and electrodissolution), photocatalytic reduction, and biological ...
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Photocatalytic magnetic separable beads for chromium (VI) reduction
... of chromium (VI) adsorption onto catalyst surface which took place in this ...Cr(VI) reduction and suggest that the photocatalytic process for the removal of heavy metals may occur via direct ...
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Determination of Chromium(VI) reduction by acinetobacter haemolyticus using x-ray absorption fine structure spectroscopy
... the reduction of Cr(VI) by a locally isolated bacterium, Acinetobacter haemolyticus ...that chromium was only present in the form of Cr ...of chromium as Cr(III) bonded to ...
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Removal of chromium(VI) from aqueous solutions by electrochemical reduction–precipitation
... Cr(VI) reduction, the total removal of Cr and the adsorption of Cr(VI) on the sludge was experimentally investigated in the pH range of 2 to 10, and these experiments were performed using the same ...
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The mode-of-action of the carcinogen chromium (VI): An investigation into the formation of DNA lesions during the reduction of chromate
... handling chromium(VI) have shown that after inhalative exposure the bulk of chromium(VI) compounds is deposited in the lungs where it stays for a very long time (Cohen et ...1993). ...
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Kinetic Studies on Hexavalent Chromium Reduction
... of reduction of Cr(VI) by a known organic substance, 1-butanol in micellar media have been studied ...The reduction of Cr(VI) to Cr(III) occurs in a micro- heterogeneous system in cell ...the ...
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Magnetic Characterization of Hypervalent Chromium Intermediates in the Reduction of Chromium(VI) by Glutathione in Acidic Solutions
... by reduction with small reductants like glutathione (GSH), ascorbate (As), cysteine (Cys) and ...the reduction of chromate by thiols have been investigated, the participation of Cr(IV) intermediates has ...
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Reduction of Hexavalent Chromium Using L-Cysteine Capped Nickel Nanocatalysts
... hexavalent chromium ions from aqueous environments. We observed 99% reduction of Cr(VI) ions with Ni NPs in a very short time (greater than four times increase in reduction was achieved in ...
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Influence of soil minerals on chromium(VI) reduction by sulfide under anoxic conditions
... Cr(VI) reduction at pH 7.87. Initial concentrations of Cr(VI) and sulfide were 40 and 800 μM, ...Cr(VI) reduction could be assessed by comparing the rates between the systems containing ...
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Chromium(VI) reduction characteristics of acinetobacter haemolyticus immobilized on wood shavings
... humans. Chromium is included in the complex named glucose tolerance factor ...of chromium known in plant and ...of chromium are always toxic although the toxicity level is related to chromium ...
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Chromium (VI) – induced stress response in the plant Plantago ovata Forsk in vitro
... (Cr VI) treatment resulted in significant reduction of the shoot and root length in 10 day-old ...of reduction in root length, it should be noted that multiple root development was found in ...
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Adsorption of Chromium (VI) on Raw and Modified Carpathian Diatomite
... removing chromium (VI). For raw diatomite the maximum reduction of chro- mate ions took place after 120 ...of chromium removal on Fe-diatomite was higher and the adsorption equilibrium was ...
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Soil dehydrogenase activity in the presence of chromium (III) and (VI)
... the reduction of TTC was extracted by adding 20 ml of ethanol, then the soil mixture was vigorously shaken by hand for 1 min and finally filtered through filter ...
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Studies on the biotransformation of chromium (VI) by methane oxidising bacteria
... in reduction of chromate in these experiments, because the cells were cultivated under conditions of high copper-to-biomass ratio, when the soluble methane monooxygenase is not expressed (Stanley et ...with ...
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EFFECTIVE REMOVAL OF CHROMIUM BY STEEL SLAG
... germination, reduction of growth, decrease of yield, inhibition of enzymatic activities, impairment of photosynthesis, nutrient and oxidative imbalances, and mutagenesis ...
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Mechanisms of chromium (VI) resistance by acinetobacter haemolyticus
... Extracellular reduction of Cr(VI) to Cr(III) which does not cross the ...Cr(III) reduction may generate oxidative stress, as well as protein and DNA ...by chromium derivatives (Ramírez-Díaz et ...
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Electrochemical Removal of Chromium (VI) from Wastewater
... hexavalent chromium had attracted much more attention as it was a hazardous ...Electrochemical reduction technology was applied to removal chromium (VI) from ...the reduction process ...
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Preparation of Chromium (III) Phthalate via Chromium (VI) Oxide using tertiary amyl alcohol as a solvent
... reduction of CrO 3 at room temperature by ethanol in the presence of phthalic acid (H 2 pht) yield solution that contains monomeric and dimeric Cr (III) complexes. A solution H 2 pht/Cr molar ratio of 1:1 and 1:2 ...
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Chromium(VI) biosorption studies using non-living microorganisms
... of reduction of Cr(VI) to lower oxidation states, not necessarily to Cr(III), in which free radicals are ...generated. Reduction of Cr(VI) to Cr(III) has been reported in many biological ...
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Removal of Chromium by a Low Cost Biosorbent (NTAC) from Polluted Waters: Synthesis, Characterization, Isothermal, Kinetic and Thermodynamic Studies
... of Chromium solution (a) Cr spectra, (b) C1s spectra (c) O1s spectra and (d) survey scan XPS reference binding energy (eV) value for N1s and C1s binding energies for aliphatic species are ...to chromium ...
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