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Preparation of high-performance activated carbons using bamboo through one-step pyrolysis

One-step pyrolysis is a promising thermal degradation process that has a fast reaction rate and high energy efficiency. In this study, high performance bamboo activated carbon was successfully prepared by one-step pyrolysis with different pyrolysis times (2.5 h, 5 h, and 10 h). Using a high pyrolysis temperature of 1050 °C, the specific surface area was remarkably increased to 2348 m2/g, which was substantially higher than the findings reported previously by other studies. The mesopore ratio was increased to 77.4%, which indicated that the bamboo activated carbon mainly contained microporous carbon and the mesoporosity was considerably developed. The activated carbon was then applied successfully to remove Methylene Blue from aqueous solutions. The adsorption equilibrium data was fit best to the Langmuir model. The maximum adsorption capacity ranged from 495 mg/g to 1667 mg/g.