Adsorption kinetics of synthetic organic contaminants onto superfine powdered activated carbon.

In this study, the S-PACs and their parent PACs were tested for the adsorption of three aromatic compounds-2-phenylphenol, biphenyl, and phenanthrene-with and without the presence of natural organic matter (NOM). Adsorption rates were increased for adsorption onto S-PAC as compared to PAC in all trials without NOM and in most trials with NOM. Faster adsorption onto S-PAC was found to be a result of a smaller particle size, lower surface oxygen content, larger pore diameters, and neutral pHPZC. Adsorption of a planar compound, phenanthrene, increased the most between PAC and S-PAC, while adsorption of 2-phenylphenol, a nonplanar compound, was impacted the least. Phenanthrene additionally was minimally impacted by the presence of NOM while 2-phenylphenol adsorption declined severely in the presence of NOM.
PMID: 32464771 [PubMed - in process]

Source: Chemosphere - May 30, 2020 Category: Chemistry Authors: Partlan E, Ren Y, Apul OG, Ladner DA, Karanfil T Tags: Chemosphere Source Type: research