Research on the Catalytic Degradation of Nitrobenzene in Seawater by Black Carbon
The ocean is an important gathering place for black carbon and nitrobenzene pollutants.This article studies the degradation of nitrobenzene by black carbon in seawater environment to elucidate the catalytic mechanism of black carbon on nitrobenzene.Research has found that black carbon has a strong adsorption effect on nitrobenzene in seawater environments.After adding a small amount of sulfides,black carbon can promote the rapid reduction and degradation of nitrobenzene.The relationship between the normalized rate constant of BET specific surface area and the elemental composition of black carbon samples and the number of functional groups on the surface of black carbon was analyzed.The main control factor for the degradation and reduction of nitrobenzene by black carbon as a catalyst was analyzed.The study found that the increase of residual original organic matter in black carbon can accelerate the reduction and degradation of nitrobenzene.The degradation rate of nitrobenzene is related to the surface functional groups of black carbon.Phenolic hydroxyl and carbonyl groups are important active sites for the reduction and degradation of nitrobenzene by black carbon.
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