Evaluations of the physicochemical characterizations of activated carbons

Abstract

The objectives of this research were to identify the surface physicochemical characteristics of activated carbons, as well as examine the specific relationship of those properties by using a statistical analysis. Eight commercial activated carbons with different raw materials, including peat, bituminous and coconut shell, were considered. The ash content, pH value, oxygenated functional groups, true density and apparent density were measured with recommended standard methods.The adsorption isotherms of nitrogen, argon and mercury were reported by using automatic adsorption apparatus. The results indicated that non-polar vapor

Adsorption Equilibrium of Polyethylene Glycol in the Copper Electroplating Solution on Activated Carbon

“…Thus, this study employs the standard methods for obtaining the physical properties of the activated carbon related to adsorption. The chemical properties of activated carbon, F-400, may be found in the work of Chiang et al (5), which reported the following: ash of 7.25 wt%, functional groups (in m eq. /100 g) of carboxyl, lactone, phenolic, and carbonyl acidic types of 6, 4, 2, 12, and of basic type of 50, and pH 8.32.…”

Surface-Assisted Selective Air Oxidation of Phosphines Adsorbed on Activated Carbon

“…The activated carbon (AC) brand DARCO produced by Fisher Scientific (650 m 2 /g) was applied for the studies. Only one specifically mentioned experiment utilized Norit AC (RBAA-3, specific surface area 877 m 2 /g 88 ). Prior to use, the AC was washed with water to remove traces of phosphoric acid so that its signal did not interfere with phosphine or phosphine oxide peaks in the 31 P NMR spectra.…”