Dual Rate Kinetic Model of Fixed Bed Adsorber

Interaction of organic and inorganic fractions of biochar with Pb(ii) ion: further elucidation of mechanisms for Pb(ii) removal by biochar

“…25 This is consistent with adsorption kinetics on activated carbon, as reported by Peel and Benedek. 29 However, a reverse order was obtained for the amount of Pb(II) sorbed (q e ) at equilibrium-DM-biochar and its inorganic fraction had higher q e than those of RS-biochar and RS-inorganic (Fig. 2A and B).…”

A Mathematical Model of the Interaction Between Adsorption and Biodegradation on Granular Activated Carbon at Low Substrate Concentrations

“…Therefore, the assigned value of L f was taken to be 1 um for further model calibration and verification. This value is in general agreement with the few references cited in the literature (Benedek, 1980).…”

“…Bioregeneration has not been generally accepted as a substrate removal mechanism (Van der Kooij, 1979;Benedek, 1980;Peel and Benedek, 1980;Famularo, Mueller and Pannu, 1980;Maloney, et al, 1984). Instead, these researchers suggest that long term, steady state removal is due to slow adsorption kinetics.…”

“…sec (given as 0.28 days m Table 5-1). For recently established biofilms at low substrate concentrations, the initial biofilm thickness has been reported to be between 0.05 um and 1 um (Rittmann and Brunner, 1984;Benedek, 1980) ; 0.5 urn was the assigned value for initial model testing. Biofilm density, X f , the mass of attached bacteria per unit biofilm volume, has been measured to be between 2 3 and 80 mg/cm (Namkung, Stratton and Rittmann, 1982; Andrews 3 and Txen, 1981); 2.7 mg/cm was selected.…”

Adsorption kinetics of polyethylene glycol from aqueous solution onto activated carbon

“…Additionally, the corresponding initial and boundary conditions are listed in Appendix. A more detailed discussion of these equations is given in the literature [3,16,17]…”