Sorption parameters, listed

Fig. 2. Sorption edges and DLM fitting curves of (a) neptunyl on alumina gel, and (b) uranyl on quartz at different ionic strengths (I.S.) using experimental conditions and model parameters listed in Table 2. Uranyl data are from Mignot (2001).

Fig. 10-12. TPA 3.1 calculated peak dose (rem x yr ) for specific radionuclides to receptor group at 120 kii omparison of results using uncorrelated and correlated alluvium sorption parameters for Am(III), Np(V), Pu(V), Th(IV), and U(VI). Lines represent regression tdclm for each nuclide, as indicated. Correlation coefficients listed in Table 10-3. All other parameters set at baseline values and PDFs (U.S. Nuclear Regulatory Commission, 1999b,c).

The calculated parameters of the Freundlich sorption isotherms are listed in Table 10.4. Theoretically, the higher the sorption intensity parameter (1/n), the lower the binding affinity of soil with metals. The equilibrium partition coefficient (k) is positively related to metal sorption capacity of soils. The sorption capacities and... 

Both models have also been fitted to the sediment data of Ketelmeer and Hollands Diep. No three-parameter model could adequately describe either the illite or the sediment data. The model fits to the sediment data are included in Figure 3. The parameter values are listed in Table I. The 2-box model provides an adequate description of the data, but tends to overpredict radiocesium sorption during the first 24 to 48 hours, particularly at low total-Cs concentrations. As was needed for Cs... 

Two kinetic models, namely, pseudo-first-order and pseudo-second-order, were used to investigate the adsorption process of methyl orange, methyl blue and safranine T onto synthesised and commercial zeolite. Kinetic parameters along with correlation coefficient for the pseudo-second-order kinetic model are listed in Table A.3. The calculated correlation coefficient is closer to unity for the pseudo-second-order kinetic model than the pseudo-first-order kinetic model. Therefore, the sorption reaction can be approximated more favourably by the pseudo-second-order kinetic model for methyl orange, methyl blue and safranine T onto synthesised and commercial zeolite. MPSD error function values as shown in Table A.3 are also considerably lower for the pseudo-second-order kinetic model, reinforcing the applicability of the pseudo-second-order kinetic model. It may be seen that the initial sorption rate (h) continuously increased with increase in Cq. This is due to the increase in driving force due to the increase in Q. 

The kinetic parameters measured by batch-experiments [2] for the sorption of 3-chlorophenol on Na bentonite at 25 °C (viz. the subsequent list of data and Fig. 2) are transformed to the transport in a model soil column. The model soil column is assumed to consist of Na bentonite particles, to have the porosity of natural soil, and to be saturated with water. There is a 1-day injection of aqueous 3-chlorophenol into the column. Model calculations are made for a non-precharged column and a column precharged by irreversibly adsorbed 3-chlorophenol. Observation time is 1.5 days. The experimental conditions for the calculations have model character with respect to the transfer of data and do not consider possible experimental difficulties in the soil column, e.g., by swelling of Na bentonite. 

Since the P T procedure includes various phase transition steps that may shift the isotopic signature of the analytes (evaporation, sorption and condensation), the P T method parameters of purge time, desorption time and injection temperature have been carefully evaluated for the determination of the 8 C-values. The compound specific isotope ratios of 10 different VOCs ranging from the unpolar benzene to the polar MTBE as listed in Table 4.6 were determined (Zwank, 2003 Zwank and Berg, 2013). 

---