Rice Husk-Derived Activated Carbons for Adsorption of Phenolic Compounds in Water.

ABSTRACT: Activated carbons are synthesized from rice husk by one- and two-step pyrolysis. In general, two-step pyrolysis produces a higher yield of activated carbons. The yield of activated carbon decreases with the increase of mass ratio of KOH and biomass, which has a significant impact on the development of surface area and porosity. The maximum S _BET (2138 m² g^-1) is achieved with micro- and mesoporous structures, which is favored for the adsorption process. The activated carbons can efficiently remove phenol from water by a few minutes. In particular, the maximum adsorption capacity (201 mg g^-1) is achieved due to the excellent surface textural properties. The Langmuir model can better define the adsorption isotherm. The high correlation coeff

SUBMITTER: Shen Y 

PROVIDER: S-EPMC6607306 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature