Results 11 to 20 of about 121,736 (313)
Spectroscopic Determination of Chromium(VI) during the Reduction of Chromium(VI) to Chromium(III) [PDF]
Applied Spectroscopy, 1991 Reduction of chromium(VI) to chromium(III) by thiourea between pH 3.0 and 5.5 is a key aspect of the chromium(VI)/thiourea/polyacrylamide gel polymer system used in enhanced oil recovery processes. A method has been developed to determine chromium(VI) concentration during the reduction of chromium(VI) to chromium(III) in this pH range.
Maxcy, Thomas A. +3 more
openaire +2 more sources
Chemical reduction of hexavalent chromium (VI) in soil slurry by nano zero valent iron [PDF]
, 2015 The increasing industrial development of recent decades has lead to the production of increasing quantities of waste containing heavy metals, elements often harmful to the environment, which in the past were not properly disposed of, thus inducing soil
DI PALMA, Luca +2 more
core +1 more source
Disposal of highly toxic waste chromium solutions [PDF]
E3S Web of ConferencesThe aim of the study is to determine the effect of organic reductants (sawdust) on the degree of reduction of chromium (VI) ions in the complex processing of waste chromium-containing solution (electrolyte) of plating production, as at the same time to ...
Mukhammadiev Komil +3 more
doaj +1 more source
Oxidation of Cr(III)-Fe(III) Mixed-Phase Hydroxides by Chlorine: Implications on the Control of Hexavalent Chromium in Drinking Water. [PDF]
, 2018 The occurrence of chromium (Cr) as an inorganic contaminant in drinking water is widely reported. One source of Cr is its accumulation in iron-containing corrosion scales of drinking water distribution systems as Cr(III)-Fe(III) hydroxide, that is, Fe ...
Chebeir, Michelle, Liu, Haizhou
core +2 more sources
Frontiers in Microbiology, 2020 Microbial mats are rarely reported for chromium-polluted ecosystems, hence information on their bacterial diversity and role in chromium removal are very scarce.
Raeid M. M. Abed +5 more
doaj +1 more source
On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry [PDF]
, 2005 On-line preconcentration system for the selective, sensitive and simultaneous determination of chromium species was investigated. Dual minicolumns containing chelating resin were utilized for the speciation and preconcentration of Cr(III) and Cr(VI) in ...
Hamada, Kazuhide +5 more
core +1 more source
Indonesian Journal of Chemistry, 2010 A specific, selective and simple method for speciation of chromium(VI) and chromium(III) has been developed. This method is based on the quantitative extraction of chromium(VI) and chromium(III) as an ion association of tetramethylammonium-chromate in ...
Valencia Widiyaningrum Wandoyo +2 more
doaj +1 more source
Annals of Agricultural and Environmental Medicine, 2021 Introduction Genotoxicity of chemical compounds is primarily associated with the interaction with DNA, formation of mutations, damage to chromosomes and initiating carcinogenesis processes.
Ewa Sawicka +2 more
doaj +1 more source
Effect of the Temperature on chromium precipitation in faucets [PDF]
E3S Web of Conferences, 2021 The research was studying the chromium precipitation in faucets which were extracted at ambient temperature of 20 ºC, 40 ºC and 60 ºC by extraction solution, the results showed that in general, the chromium extraction in the faucets increased as the ...
Tingting Huang
doaj +1 more source
Walailak Journal of Science and Technology, 2013 The potential use of custard apple peel powder for the removal of chromium (VI) from waste water has been investigated in batch mode experiments. Influences of parameters like initial chromium (VI) concentration (5 - 30 mg/l), pH (2 - 4), and biomass ...
Darapureddi KRISHNA, Ravi Padma SREE
doaj +1 more source