Modeling Adsorption of TCE by Activated Carbon Preloaded by Background Organic Matter

Competitive Effects of Nondisplaceable Organic Compounds on Trichloroethylene Uptake by Activated Carbon. I. Thermodynamic Predictions and Model Sensitivity Analyses

“…This lack of displacement may be caused by a combination of factors, including steric hindrance and adsorption at multiple sites. Even though NOM has been shown to compete with SOCs during simultaneous adsorption, the effects of preloaded NOM are generally more severe, and may have an impact on both equilibrium capacity and adsorption rate (7)(8)(9)(10)(11).…”

Competitive Effects of Nondisplaceable Organic Compounds on Trichloroethylene Uptake by Activated Carbon. II. Model Verification and Applicability to Natural Organic Matter

“…Even though NOM has been shown to compete with SOCs during simultaneous adsorption, the effects of preloaded NOM are generally more severe and may impact both equilibrium capacity and adsorption rate (1)(2)(3)(4)(5). Preloading occurs in fixed-bed reactors, the most efficient reactor configuration for most adsorption processes, when (1) the mass transfer zone of the foulant compound migrates through the bed faster than the compound targeted for removal and (2) the foulant compound is not readily displaced.…”

Carbon nanomaterials in clean and contaminated soils: environmental implications and applications

“…Their results showed that each type of DOM resulted in nonlinear sorption isotherms to the MWCNTs, following the order peptone > HAs. Although the inherent sorptive ability of HA for each of the contaminants was more limited than that of pristine MWCNTs, HA coatings did not result in large changes to the sorption of any of the contaminants, which is inconsistent with models indicating that "fouling" of sorption sites by DOM will reduce contaminant sorption capacity (Carter and Weber, 1994;X. Wang et al, 2008).…”