Buscar
Mostrando ítems 11-20 de 344
Inorganic nanoparticles for reduction of hexavalent chromium
Hexavalent Chromium [Cr(VI)] is a highly carcinogenic and toxic material. It is one of the major
environmental contaminants in aquatic system. Its removal from aqueous medium is a subject of
current research. Various ...
Biotreatment of cr(VI)-containing wastewater mediated by indigenous bacteria
(Gheorghe Asachi Technical University of Iasi, 2018-11)
Indigenous Pseudomonas veronii 2E, Klebsiella oxytoca P2 and Klebsiella ornithinolityca 1P were tested as catalysts for the transformation of Cr(VI) to Cr(III) for Cr(VI)-containing wastewater biotreatments. The Cr(VI) ...
Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO2−-Mediated Photoreduction of Cr(VI)
(Springer, 2018-02)
We here isolate fulvic acids from vermicompost to prepare and characterize novel fulvic acid-coated magnetite nanoparticles. UV-A irradiation of suspensions of the nanoparticles under different experimental conditions led ...
Biological removal of hexavalent chromium: evaluation of the metabolic activity of native and Cr(VI)-acclimated activated sludge using a respirometric method
(Taylor & Francis Ltd, 2019-08)
Hexavalent chromium becomes in one of the tops internationally concern environmental issues due to its wide usage in several industrial activities. There are two stable oxidation states of chromium in the environment which ...
Photocatalytic reduction of Cr(VI) on hematite nanoparticles in the presence of oxalate and citrate
(Elsevier Science, 2019-03)
Hematite nanoparticles (nHm) were tested for Cr(VI) photocatalytic reduction (300 μM) in the presence of different electron donors such as citrate (Cit), oxalate (Ox), 2-propanol and methanol. At pH 3 and under irradiation ...
REMOVAL MECHANISMS OF CHROMIUM(VI) FROM THE SOIL BY INTERACTION BETWEEN ORGANIC MATTER AND IRON(III)MECANISMOS DE REMOÇÃO DE CROMO(VI) DO SOLO PELA INTERAÇÃO ENTRE MATÉRIA ORGÂNICA E FERRO(III)
(Instituto Geológico, Secretaria do Meio Ambiente, São Paulo, 2019)
Speciation Of The Products From Acid Reduction Of51cr(vi)
(Kluwer Academic Publishers, 1995)
Chromium (VI) removal from water by means of adsorption-reduction at the surface of amino-functionalized MCM-41 sorbents
(Elsevier Inc, 2016-10)
A first study that demonstrates the capability of the amino-functionalized MCM-41 sorbents to reduce Cr(VI) to the less toxic trivalent state is presented. To achieve this aim two mesoporous ordered silica with MCM-41 pores ...