The combination of the two proves as an effective method of desulfurizing coal as leaching with an alkali will create hydrated alkali-bearing silicate, alumina-silicate complexes (Groppo, Parekh, 2000). These complexes can be manipulated to react with acids to produce effective results.
The bio-processing of coal is an emerging technology with two primary aims: the cleaning of coal through microbial processes and coal conversion (Meshram, Purohit, 2015). Coal is decayed plant or animal matter that has been altered by...
... middle of paper ...
...thods are able to remove inorganic sulfur cost effectively and efficiently, while the chemical method is able to remove the organic sulfur effectively. The majority of coal processing plants use physical methods followed by a flue gas desulfurization with wet scrubbers, because this has proved to be cost efficient but it creates a large amount of toxic waste due to the wet scrubbers. The recommended method of the desulfurization of coal from this analysis is a combination of physical methods, followed by a chemical process, in order to maximize removal of sulfur. Using this method will also be within the regulations of 150 parts per million, and will be ecologically positive (Meshram, Purohit, 2015). The regulations are always becoming stricter regarding the amount of emissions allowed and this method will be the most effective in following the future regulations.
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