Results 1 to 10 of about 72,885 (205)

Total chromium and hexavalent chromium occurrence analysis [PDF]

open access: bronzeJournal AWWA, 2013
Total and hexavalent chromium occurrence in the United States was investigated using three available datasets. The National Chromium and Boron Occurrence Survey, the US Environmental Protection Agency database of chromium from the Second Six‐Year Review, and California Department of Public Health water quality analysis data were obtained and analyzed ...
Chad J. Seidel, Christopher J. Corwin
openaire   +2 more sources

Hexavalent chromium removal and total chromium biosorption from aqueous solution by Quercus crassipes acorn shell in a continuous up-flow fixed-bed column: Influencing parameters, kinetics, and mechanism. [PDF]

open access: yesPLoS ONE, 2020
Continuous fixed-bed column studies were carried out, utilizing acorn shell from Quercus crassipes Humb. & Bonpl. (QCS), in order to remove total chromium and Cr(VI) from aqueous solution.
Erick Aranda-García   +1 more
doaj   +2 more sources

Cromo (III), cromo (VI) e cromo total em alguns vinhos brasileiros Chromium (III), chromium (VI) and total chromium in some brazilian wines

open access: yesCiência Rural, 1995
Cromo(III), Cromo(VI) e Cromo total foram analisados em cento e quatro (104) vinhos comerciais brasileiros, brancos, rosados e tintos. Espectrometria de absorção atômica em forno de grafite foi utilizada nas determinações.
Carlos Eugênio Daudt, Marta Weber Canto
doaj   +2 more sources

Fume Generation and Content of Total Chromium and Hexavalent Chromium in Flux-cored Arc Welding [PDF]

open access: bronzeThe Annals of Occupational Hygiene, 2003
This study was performed to investigate the fume generation rates (FGRs) and the concentrations of total chromium and hexavalent chromium when stainless steel was welded using flux-cored arc welding (FCAW) with CO2 gas. FGRs and concentrations of total chromium and hexavalent chromium were quantified using a method recommended by the American Welding ...
Chung Sik, Yoon   +2 more
openaire   +3 more sources

Biostabilization of Tannery Sludge Compost by Vermicomposting

open access: yesJournal of Agricultural Sciences, 2022
The aim of this study is to investigate the stabilization of tannery sludge compost mixed with cattle manure at the different ratios by employing an epigeic earthworm Eisenia foetida and bioaccumulation of Cr in tannery sludge by earthworms.
Nur Okur   +2 more
doaj   +1 more source

Performance of the Dual-Chamber Fungal Fuel Cell in Treating Tannery Wastewater

open access: yesApplied Sciences, 2023
Fungi are typically expressed as excellent microorganisms that produce extracellular enzymes used in the bioaccumulation phenomenon. In this study, laboratory-scale dual-chamber fungal fuel cells (FFCs) were applied as an alternate approach for the ...
Mohamed S. Mahmoud   +8 more
doaj   +1 more source

Chromium Recovery from Chromium-Loaded Cupressus lusitanica Bark in Two-Stage Desorption Processes

open access: yesPlants, 2023
Hexavalent chromium (Cr(VI)) contamination poses serious health and environmental risks. Chromium biosorption has been employed as an effective means of eradicating Cr(VI) contamination.
Alma Rosa Netzahuatl-Muñoz   +2 more
doaj   +1 more source

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