Organic sulfur removal from coal by electrolysis in alkaline media

1988 ◽  
Vol 18 (1) ◽  
pp. 25-36 ◽  
Author(s):  
P.G. Wapner ◽  
S.B. Lalvani ◽  
G. Awad
Keyword(s):  
Sulfur Removal ◽  
Alkaline Media ◽  
Organic Sulfur

Microwave Applied in Coal Desulfurization Process

2011 ◽  
Vol 71-78 ◽  
pp. 2122-2126 ◽  
Author(s):  
Jie Mi ◽  
Rui Di Wei
Keyword(s):  
Microwave Irradiation ◽  
Irradiation Time ◽  
Sulfur Removal ◽  
Organic Sulfur ◽  
Xps Analysis ◽  
Peroxyacetic Acid ◽  
Inorganic Sulfur ◽  
Coal Desulfurization ◽  
Desulfurization Process ◽  
Sulfur In Coal

In this paper, the desulfurization of Fangshan coal was carried out by tetrachloroethylene extraction under ultrasonic and microwave irradiation. The GC-MS analysis of the tetrachloroethylene extraction reveals that organic sulfur in coal can be removed by tetrachloroethylene extract under ultrasonic and microwave irradiation. It is found that microwave irradiation time has great effect on organic sulfur removal. With the microwave irradiation time increases, the efficiency of organic sulfur removal increases. The desulphurization yield reaches maximum, 45%, when the time is 30 minutes or more. It can be clearly seen that Fangshan coal was oxidated by peroxyacetic acid under ultrasonic and microwave irradiation. From the XPS analysis of the macerals of the coal, most of the inorganic sulfur and organic sulfur are removed, especially thioether and thioalcohol which can be completely removed. These results suggest that microwave is an effective way to remove sulfur in coal.

scholarly journals Study of Coal Microbiocenosis for Development of Biotechnological Method for its Desulfurization

2021 ◽  
Vol 15 (1) ◽  
pp. 74-80
Author(s):  
Iryna Blayda ◽  
◽  
Tetyana Vasylieva ◽  
Nataliia Vasylieva ◽  
Valentyna Khytrych ◽  
...  
Keyword(s):  
Heterotrophic Bacteria ◽  
Sulfur Removal ◽  
Organic Sulfur ◽  
Full Potential ◽  
Microscopic Fungi ◽  
Silicate Bacteria ◽  
Bacillus Genus

A presence of microscopic fungi, heterotrophic bacteria, as well as neutrophilic and acidophilic chemolitotrophic bacteria was determined in coal microbiocenosis. The largest and most active towards pyrite sulfur removal is the Acidithiobacillus genus. Heterotrophic bacteria have the biggest potential when it comes to removal of organic sulfur. Preceding treatment of coal with “silicate” bacteria from the Bacillus genus will allow to use coal microbiocenosis for its biodesulfurisation at its full potential.

EFFECT OF PYRITIC SULFUR AND MINERAL HATTER ON ORGANIC SULFUR REMOVAL FROM COAL

1993 ◽  
Vol 11 (7) ◽  
pp. 923-936 ◽  
Author(s):  
Padmakar Vishnubhatt ◽  
Theodore Thome ◽  
Sunggyu Lee#
Keyword(s):  
Sulfur Removal ◽  
Organic Sulfur ◽  
Pyritic Sulfur
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