Results 31 to 40 of about 139,399 (305)

Kinetics of the reaction between elemental sulfur and silver in synthetic esters and comparison with mineral oils [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla"
For decades, the problem of corrosive sulfur was considered to be exclusively associated with mineral oils. However, recent cases from industry have disproved this assumption.
Đukić Milica   +3 more
doaj   +1 more source

Tetrathionate and Elemental Sulfur Shape the Isotope Composition of Sulfate in Acid Mine Drainage

open access: yesFrontiers in Microbiology, 2017
Sulfur compounds in intermediate valence states, for example elemental sulfur, thiosulfate, and tetrathionate, are important players in the biogeochemical sulfur cycle.
Nurgul Balci   +3 more
doaj   +1 more source

The Molecular Composition of Hydrophilic Sulfur Sols Prepared by Acid Decomposition of Thiosulfate [1] [PDF]

open access: yes, 1988
Hydrophilic sulfur sols prepared from sodium thiosulfate and concentrated sulfuric acid and purified by repeated NaCl precipitation and peptization in water have been studied by chemical analysis, vibrational spectroscopy, ion-pair chromatography and ...
Göbel, Thomas   +2 more
core   +1 more source

Adsorption of sulfur on Lanxess Lewatit® AF 5 resin during the acidic albion leaching process for chalcopyrite

open access: yesHeliyon, 2023
Elemental sulfur is one of the major byproducts of the acidic Albion leaching process for chalcopyrite. It is a challenging component in the leach solution as it impedes gold recovery from the residue. Lanxess Lewatit® AF 5 (AF 5) is a microporous carbon-
Omid Marzoughi   +2 more
doaj   +1 more source

Biokinetics Of microbial consortia using biogenic sulfur as a novel electron donor for sustainable denitrification [PDF]

open access: yes, 2018
In this study, the biokinetics of autotrophic denitrification with biogenic S0 (ADBIOS) for the treatment of nitrogen pollution in wastewaters were investigated. The used biogenic S0, a by-product of gas desulfurization, was an elemental microcrystalline
Collins, Gavin   +7 more
core   +2 more sources

Acidithiobacillus caldus sulfur oxidation model based on transcriptome analysis between the wild type and sulfur oxygenase reductase defective mutant.

open access: yesPLoS ONE, 2012
BackgroundAcidithiobacillus caldus (A. caldus) is widely used in bio-leaching. It gains energy and electrons from oxidation of elemental sulfur and reduced inorganic sulfur compounds (RISCs) for carbon dioxide fixation and growth.
Linxu Chen   +5 more
doaj   +1 more source

Recombination Reactions as a Possible Mechanism of Mass-Independent Fractionation of Sulfur Isotopes in the Archean Atmosphere of Earth [PDF]

open access: yes, 2017
A hierarchy of isotopically substituted recombination reactions is formulated for production of sulfur allotropes in the anoxic atmosphere of Archean Earth.
Babikov, Dmitri
core   +2 more sources

In-depth study on the solubility of elemental sulfur in sour gas mixtures based on the Chrastil's association model

open access: yesPetroleum, 2016
Accurately predicting the solubility of elemental sulfur in sour gas mixtures is a primary task. As a current and widely-used model on the solubility of elemental sulfur in sour gas mixtures, Chrastil's association model has a big error in the process of
Qiao Wang, Xiao Guo, Runxi Leng
doaj   +1 more source

Addition of Di(trimethylsilyl) Phosphite to Schiff Bases of 2,5-Diformylfuran [PDF]

open access: yes, 2011
A series of 2,5-Furanyl-bis-(aminomethylphosphonic Acids) has been synthesized by the addition of di(trimethylsilyl) phosphite to azomethine bond of achiral Schiff bases derved from 2,5-diformylfuran.
Ciechańska, Magdalena   +3 more
core   +1 more source

Corrosion behavior of carbon steel pipelines under different deposits in oil and gas transportation

open access: yes工程科学学报, 2015
The corrosion behavior of X65 carbon steel under different deposits in CO2 saturated formation water was studied by weight loss measurements, electrochemical measurements, wire beam electrode and microscopic analysis.
YU Neng   +4 more
doaj   +1 more source

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