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Malthenes from solubilization of low rank coal by methanol/sodium hydroxide treatment

โœ Scribed by M. Stefanova; S.P. Marinov; L. Lazarov; J. Bimer; P.D. Salbut

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
384 KB
Volume
71
Category
Article
ISSN
0016-2361

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Removal of calcium from low rank coals b
Removal of calcium from low rank coals by treatment with CO2 dissolved in water
โœ Jun-ichiro Hayashi; Kaori Takeuchi; Katsuki Kusakabe; Shigeharu Morooka ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 668 KB

Calcium and magnesium were removed from a brown coal and two subbituminous coals by treating with CO, dissolved in water under a pressure of 600kPa. The results were compared with treatment in a hydrochloric acid solution. Removal of calcium was significantly dependent on the chemical form of calciu