METHODS AND TECHNICAL MEANS OF NEUTRALIZATION SULFUR-CONTAINING GASES IN THE ATMOSPHERE OF POTASSIUM MINES

2020 ◽  
Vol 3 (1) ◽  
pp. 318-324
Author(s):  
N.V. NORINA ◽  
◽  
A.G. ISAEVICH ◽  
Keyword(s):  
Hydrogen Sulfide ◽  
Methyl Mercaptan ◽  
Toxic Gases ◽  
Photochemical Method ◽  
Sulfur Containing

The study is devoted to the normalization of the mine atmosphere in potash mines. We propose the technique of neutralizing toxic gases (hydrogen sulfide and methyl mercaptan) in a mine atmosphere, which is based on photochemical method. It allows reducing concentrations of toxic gases to the maximum permissible values. The developed technique of neutralizing sulfur-containing gases can be used in potash mines.

Neutralization of Sulfur-Containing Gases in Mine Atmosphere of Potash Mines

2020 ◽  
Vol 24 (5) ◽  
pp. 4-8
Author(s):  
N.V. Norina ◽  
S.A. Chernyi
Keyword(s):  
High Pressure ◽  
Hydrogen Sulfide ◽  
Sulfur Compounds ◽  
Air Purification ◽  
Research Results ◽  
Ozone Generation ◽  
Toxic Gases ◽  
Photochemical Method ◽  
Magnesium Salts ◽  
Sulfur Containing

The research results of mine atmosphere normalization in potash mines are given.The method of mine air purification from toxic gases through ozonation is proposed. The developed technology of using photochemical method of neutralization hydrogen sulfide and methylmercaptan in mine atmosphere is described. Tests of the developed technology of neutralization sulfur compounds are conducted in mines of Upper reaches of the Kama river’s deposit of potassium and magnesium salts and the results are presented in this article. It is found out that installation of high pressure arc mercury lamps AML-400 for ozone generation on mining excavation machines allows to reduce sulfur gases concentration in workspace up to the level of maximum permissible.

scholarly journals Hydrogen Sulfide Gas Exposure Induces Necroptosis and Promotes Inflammation through the MAPK/NF-κB Pathway in Broiler Spleen

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Qianru Chi ◽  
Dongxu Wang ◽  
Xueyuan Hu ◽  
Shiping Li ◽  
Shu Li
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Sulfide ◽  
Energy Metabolism ◽  
Inflammatory Response ◽  
Human Health ◽  
Mapk Pathway ◽  
Classical Pathway ◽  
Inos Activity ◽  
Mda Content ◽  
Sulfur Containing

Hydrogen sulfide (H2S) is one of the main pollutants in the atmosphere, which is a serious threat to human health. The decomposition of sulfur-containing organics in chicken houses could produce a large amount of H2S, thereby damaging poultry health. In this study, one-day-old broilers were selected and exposed to 4 or 20 ppm of H2S gas (0-3 weeks: 4±0.5 ppm, 4-6 weeks: 20±0.5 ppm). The spleen samples were collected immediately after the chickens were euthanized at 2, 4, and 6 weeks. The histopathological and ultrastructural observations showed obvious necrosis characteristics of H2S-exposed spleens. H2S exposure suppressed GSH, CAT, T-AOC, and SOD activities; increased NO, H2O2, and MDA content and iNOS activity; and induced oxidative stress. ATPase activities and the expressions of energy metabolism-related genes were significantly decreased. Also, the expressions of related necroptosis (RIPK1, RIPK3, MLKL, TAK1, TAB2, and TAB3) were significantly increased, and the MAPK pathway was activated. Besides, H2S exposure activated the NF-κB classical pathway and induced TNF-α and IL-1β release. Taken together, we conclude that H2S exposure induces oxidative stress and energy metabolism dysfunction; evokes necroptosis; activates the MAPK pathway, eventually triggering the NF-κB pathway; and promotes inflammatory response in chicken spleens.

VSC Adsorption Capability of Layered Double Hydroxide Containing Transition Metal

2014 ◽  
Vol 21 ◽  
pp. 71-74
Author(s):  
Yoshiyuki Yokogawa ◽  
Hiroya Sano ◽  
Shota Namba ◽  
Kazuo Fujii ◽  
Yuki Morita ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Sulfide ◽  
Dimethyl Sulfide ◽  
Zinc Ion ◽  
Methyl Mercaptan ◽  
Adsorptive Property ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Adsorption Capability ◽  
Fast Removal

Many people worldwide assess themselves as having halitosis, often caused by bio-film and microbial putrefaction of the debris in the mouth, leading to the production of mal-odorous compounds, volatile sulfur compounds (VSC) such as hydrogen sulfide (H2S), methyl mercaptan and dimethyl sulfide. Some desulfurizing agents such as CaO and Na2CO3 in the industry are widely used, but there are few dental desulfurizing agents or adsorbents for removal of VSC. Ag ion exchanged zeolite material showed a high adsorptive property of H2S in aqueous solution (H2S water), however Ag sulfides were formed in aqueous solution. The VSC adsorption capabilities of layered double hydroxides, of which composition is A1-xAlx(OH)2Bx/n·mH2O, where A is Mg and/or Zn and B is CO32-, in aqueous medium was studied by FPD/GC. The concentration of H2S fell to 0% in 2 h when the Zn hydrotalcite was used, while that decreased to 20% in 18 h when the Mg hydrotalcite heated at 500 °C was used. The zinc ion was not detected in the H2S water after soaking for 18 hours.The Zn hydtotalcite is expected to be likely adsorbent for the fast removal of VSC from the mouth.

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