Abstract
Polychlorinated biphenyl (PCB) residues from the sodium dispersion (SD) process were employed as the raw materials for the production of activated carbon using KOH activation. The pore properties, such as the specific surface area and pore size distribution, were characterized using the Barrett–Joyner–Halenda method and the Horvath–Kawazoe method based on the N2 adsorption isotherm at 77 K. The activated carbon produced showed similar adsorption capacities and specific surface areas to the commercially available product. The effects of the activation conditions on the porosity of the activated carbon produced were studied. The most significant factor affecting the specific surface proved to be the activation temperature. The activated carbon produced from PCB residues from the high-temperature (423–443 K) SD process had a binary pore size distribution well developed in the 4 nm region and in the micropore region. The pore structure of the carbon produced from PCB residues from the low-temperature (333–393 K) SD process had a wide range of micropores and mesopores.
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Huang, H., Kobayashi, N., Sakata, M. et al. Production and characterization of KOH-activated carbon derived from polychlorinated biphenyl residue generated by the sodium dispersion process. J Mater Cycles Waste Manag 9, 182–187 (2007). https://doi.org/10.1007/s10163-007-0175-z
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DOI: https://doi.org/10.1007/s10163-007-0175-z