Analysis of the pore structure of activated carbons produced from paper mill sludge using small angle neutron scattering data (original) (raw)

1999

Abstract

A novel, cost-effective, and environmentally benign process was developed to produce highly efficient carbon-based adsorbents (CBAs) from paper mill sludge. The production process required chemical activation of sludge using zinc chloride and pyrolysis at 750 C in Nâ gas. The produced CBAs were characterized according to their surface area and pore size distribution using Nâ-BET adsorption isotherm data. Further characterization of the surface and pore structure was conducted using a unified exponential/power law approach applied to small angle neutron scattering (SANS) data. The structural features analyzed by SANS revealed the dependence of porosity with zinc chloride concentration. The presence of inaccessible pores was also determined by contrast-match experiments.

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