Study on the effects and mechanisms of different coal matrix structures on the desulfurization efficiency of Pseudomonas putida.

3 Results and discussion 3.1 Changes in sulfur forms of two coal samples before and after desulfurization According to the data in Figure 3 , the organic sulfur content of both coal samples showed a decreasing trend after desulfurization.

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The pyritic sulfur content of both coal samples showed an increasing trend, which is not due to an increase in the absolute content of pyrite but a change in its relative proportion.

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