Coal desulfurization using gamma and ultraviolet radiation

ABSTRACT Combustion of coal produces oxides of sulfur that is harmful for the environment. Present research work was aimed to appraise the desulfurization of coal using high-energy radiations. Gamma radiations (γ-rays) and ultraviolet radiations (UV) were employed for the desulfurization of coal under different media conditions. Coal slurries in these media were treated for different time intervals of UV radiation and γ-rays doses (50, 100, 150 kGy). The maximum sulfur removal was achieved up to 54 and 36% by γ-radiation and UV radiation, respectively, which is due to the more ionizing power of γ-rays treatment. To effectively and efficiently remove sulfur from coal, the use of high-energy radiations is suggested for the desulfurization of coal.

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