REACTIONS OF HYDROGEN SULFIDE WITH VARIOUS ORGANIC COMPOUNDS AT HIGH PRESSURES

1953 ◽  
Vol 18 (6) ◽  
pp. 748-752 ◽  
Author(s):  
T. L. CAIRNS ◽  
A. W. LARCHAR ◽  
B. C. McKUSICK
Keyword(s):  
Hydrogen Sulfide ◽  
Organic Compounds ◽  
High Pressures

Electromediators in synthesis of sulfur organic compounds based on hydrogen sulfide and thiols

2010 ◽  
Vol 435 (1) ◽  
pp. 302-306 ◽  
Author(s):  
A. O. Okhlobystin ◽  
A. V. Okhlobystina ◽  
E. V. Shinkar’ ◽  
N. T. Berberova ◽  
I. L. Eremenko
Keyword(s):  
Hydrogen Sulfide ◽  
Organic Compounds

scholarly journals A comparison of removal performance of volatile organic and sulfurous compounds between odour abatement systems

2018 ◽  
Vol 77 (11) ◽  
pp. 2657-2667 ◽  
Author(s):  
A. Shammay ◽  
I. Evanson ◽  
R. M. Stuetz
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Voc Removal ◽  
Biotrickling Filters ◽  
Volatile Organic ◽  
Sulfurous Compounds ◽  
Sulfide Species ◽  
Sewer Networks

Abstract Three types of odour abatement systems in sewer networks in Australia were studied for 18 months to determine the removals of different compounds. Six volatile sulfurous compounds and seven volatile organic compounds (VOCs) were further investigated. All types of odour abatement systems exhibited good removal of hydrogen sulfide with the biotrickling filters (BTFs) showing the highest consistent removal. Biofilters outperformed BTFs and activated carbon (AC) filters in the removal of dimethyl mono-, di- and tri-sulfide species at the low inlet concentrations typically found. AC filters exhibited little VOC removal with no compound consistently identified as having a removal greater than 0%. Biofilters outperformed BTFs in VOC removal, yet both had high removal variability.

Solubility of hydrogen sulfide in aqueous solutions of N-methyldiethanolamine at high pressures

2015 ◽  
Vol 393 ◽  
pp. 33-39 ◽  
Author(s):  
Negar Sadegh ◽  
Kaj Thomsen ◽  
Even Solbraa ◽  
Eivind Johannessen ◽  
Gunn Iren Rudolfsen ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Aqueous Solutions ◽  
High Pressures

The Determination of Free Sulfur in Soft Vulcanized Rubber by a Volumetric Method

1932 ◽  
Vol 5 (3) ◽  
pp. 360-362 ◽  
Author(s):  
W. D. Guppy
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfuric Acid ◽  
Organic Compounds ◽  
Subsequent Oxidation ◽  
Vulcanized Rubber ◽  
Elementary State ◽  
Previously Treated ◽  
Mineral Sulfides ◽  
Free Sulfur

Abstract The methods so far proposed for the determination of the free sulfur in vulcanized rubber depend upon the removal of the sulfur by extraction of the rubber with hot acetone, and subsequent oxidation to sulfuric acid of the sulfur in the extract. The extract is liable however to contain, in addition to sulfur in the elementary state, organic compounds containing sulfur derived from the rubber resins, accelerator, or antioxidant. In the subsequent oxidation this sulfur will be oxidized to sulfuric acid to an extent which depends on the method of oxidation used. In the present work, a method of analysis has been developed which is more rapid than the existing methods, and in which it is considered that the determination of the sulfur present in the elementary state is less likely to be affected by organic compounds containing sulfur. It has been found that when vulcanized rubber placed in contact with a metal, such as tin or aluminum, is boiled in hydrochloric acid, hydrogen sulfide is generated by the action of the nascent hydrogen produced. This reaction occurred with rubber which had been previously treated with acid alone to decompose metallic sulfides, but no hydrogen sulfide was obtained from rubber which had been previously extracted with acetone and was free from metallic sulfides. As these results showed that the reactions were not due to the presence of mineral sulfides, or of sulfur combined with the rubber, it was concluded that the hydrogen sulfide was formed by the reduction of the free sulfur.

Solubility of hydrogen sulfide in aqueous diethanolamine solutions at high pressures

1973 ◽  
Vol 18 (1) ◽  
pp. 71-73 ◽  
Author(s):  
Jong Il Lee ◽  
Frederick D. Otto ◽  
Alan E. Mather
Keyword(s):  
Hydrogen Sulfide ◽  
High Pressures

scholarly journals Thermophilic sulfate-reducing bacteria Moorela thermoacetica Nadia-3, isolated from “Nadiia” pit spoil heap of Chervonohrad mining region

2021 ◽  
Vol 15 (2) ◽  
pp. 35-46
Author(s):  
O. M. Сhayka ◽  
◽  
T. B. Peretyatko ◽  
A. A. Halushka ◽  
Keyword(s):  
Hydrogen Sulfide ◽  
Metal Ions ◽  
Organic Compounds ◽  
Elemental Sulfur ◽  
Sulfate Reducing Bacteria ◽  
Sulfate Reducing ◽  
Spoil Heap ◽  
Mining Region ◽  
Living Organisms ◽  
Reducing Bacteria

Introduction. Thermophilic sulfate-reducing bacteria attract attention of scientists as the potential agents of purification of wastewater polluted by sulfur and its compounds, heavy metal ions and organic compounds. These bacteria oxidize different organic substrates using metals with variable valency as electron acceptors and transform them into non-toxic or less toxic forms for living organisms. However, wastewater contains high concentrations of different toxic xenobiotics, particularly, metal ions that have negative influence on living organisms. For this reason, it is important to use resistant strains of microorganisms for the purification of wastewater. The aim of this work was to identify the thermophilic sulfur-reducing bacteria, isolated from “Nadiia” pit spoil heap of Chervonohrad mining region, and to study their properties. Materials and Methods. Thermophilic sulfur-reducing bacteria were isolated from the samples of rock of “Nadiia” pit heap at 50 cm depth. Bacteria were cultivated in TF medium under the anaerobic conditions in anaerostates. Cell biomass was measured turbidimetrically using the photoelectric colorimeter KFK-3 (λ = 340 nm, 3 mm cuvette). Hydrogen sulfide content was measured photoelectrocolorymetrically by the production of methylene blue. Organic acids content was measured by high performance liquid chromatography. Cr(VI), Fe(III), Мn(IV) and NO3– content was measured turbidimetrically. Results. Thermophilic sulfur-reducing bacteria were isolated from the rock of “Nadiia” pit heap of Chervonohrad mining region. They were identified as Moorela thermoacetica based on the morpho-physiological and biochemical properties and on the results of phylogenetic analysis. M. thermoacetica Nadia-3 grow in the synthetic TF medium, have the shape of elongated rods, are gram-positive, endospore-forming. They form light brown colonies. Optimal growth was observed at 50–55 °C, pH 6.5–7. The bacteria utilize glucose, starch, fructose, maltose, lactose, sodium lactate, arabinose, cellulose, maltose, glycerol, fumarate, and ethanol as carbon sources. The highest sulfidogenic activity of M. thermoacetica Nadia-3 was found in media with glycerol, lactose, and glucose. M. thermoacetica Nadia-3 reduce SO42-, S2O32-, Fe(III), NO3–, Cr(VI) compounds besides elemental sulfur. They accumulate biomass at K2Cr2O7 concentrations of 0.1–1 mM. Sulfur reduction is not the main way of energy accumulation. Conclusions. Thermophilic chromium-resistant sulfur-reducing bacteria M. thermoacetica Nadia-3, that produce hydrogen sulfide during the oxidation of different organic compounds, were isolated from the rock of “Nadiia” pit heap. They reduce Fe(III), Cr(VI), NO3–, SO42-, S2O32-, besides elemental sulfur.

scholarly journals Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation

2016 ◽  
Vol 4 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Amirreza Talaiekhozani ◽  
Zeinab Eskandari ◽  
Marzieh Bagheri ◽  
Mohammad Reza Talaei ◽  
Malihe Salari
Keyword(s):  
Hydrogen Sulfide ◽  
Ultraviolet Radiation ◽  
Organic Compounds ◽  
Municipal Wastewater

Air purification system

2020 ◽  
pp. 118-122
Keyword(s):  
Hydrogen Sulfide ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
The Other ◽  
Air Purification ◽  
Purification System ◽  
Volatile Organic ◽  
High Concentrations

An air purification system based on the use of specialized catalytic filling, designed to reduce high concentrations of hydrogen sulfide and volatile organic compounds is represented. The system is a 20 or 40 foot heated sea container in which two catalytic charge units are located: one is a working and the other is a reserve. Each block contains one cleaning step with a specialized ferrous charge.

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