Results 31 to 40 of about 8,585,164 (342)
Water, 2019 The application potential of nanoscale zero valent iron (nZVI) in wastewater treatment is huge and has attracted a lot of attention. In this study, the composite material BC-nZVI was prepared by emulsion of nZVI and biomass-activated carbon (BC) under ...
Bo Zhang, B. Zhu, Xiong Wang, S. You
semanticscholar +1 more source
The simultaneous detection of trivalent & hexavalent chromium in exhaled breath condensate: A feasibility study comparing workers and controls [PDF]
, 2016 The analytical method outlined in this feasibility study has been used to show that trivalent chromium (Cr(III)) and hexavalent chromium (Cr(VI)) can be detected and measured in exhaled breath condensate (EBC) samples.
Carolan, Vikki +3 more
core +1 more source
Enantioselective Total Synthesis of (−)-Curcuquinone via Regioselective Chromium-Mediated Benzannulation [PDF]
The Journal of Organic Chemistry, 2005 [reaction: see text] A short and efficient, high-yielding enantioselective total synthesis of the marine natural product (-)-curcuquinone 1 is reported involving a regioselective [3 + 2 + 1]-benzannulation reaction as the key step. Additionally, this strategy allows the isolation of curcuhydroquinone monomethyl ether 9 as an intermediate of the ...
Ana, Minatti, Karl Heinz, Dötz
openaire +2 more sources
, 2019 This study focused on reducing total chromium levels in raw wastewater from the leather tanning industry via electrocoagulation to comply with maximum permissible limits (MPL) and to determine the effects of main process parameters. An electrocoagulation
Edwar Aguilar-Ascón +2 more
semanticscholar +1 more source
Determination of total chromium in environmental water samples
Water Research, 2004 It is often desirable to quantify both dissolved Cr(VI) and total Cr in samples accurately. Various protocols are now being utilized to quantify the amount of total chromium in natural waters and each of these has possible interferences. This study describes the shortcomings of each method when particulate iron is present in a water sample, and a more ...
Parks, J. L. +6 more
openaire +3 more sources
THERMO-MECHANICAL TREATMENT OF 42SICR AND 42MNSI STEELS
Acta Metallurgica Slovaca, 2017 Two high strength low alloyed steels with 0.4%C, 0.6%Mn, 2%Si and either 1.3% of chromium or without chromium were used in this work to evaluate the effect of chromium on the final microstructure obtained by thermo-mechanical processing.
Ludmila Kučerová +2 more
doaj +1 more source
Noncollinear magnetic ordering in small Chromium Clusters [PDF]
, 1999 We investigate noncollinear effects in antiferromagnetically coupled clusters using the general, rotationally invariant form of local spin-density theory.
A. J. Cox +50 more
core +2 more sources
, 2018 Tanneries that employ chrome tanning are indicted for discharging their effluents contaminated with health hazard chromium species necessitating monitoring their levels.
Fikirte Zewdu, Meareg Amare
semanticscholar +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
, 2017 This research paper deals with the determination of total chromium (total Cr), Cr(III), and Cr(VI) in Kombolcha leather industrial wastewater and the surrounding (soil and lettuce plant) samples where the wastewater flows. The levels of total Cr, Cr(VI),
Tilahun Belayneh Asfaw +2 more
semanticscholar +1 more source