Adsorption of several metal ions onto a model soil sample: Equilibrium and EPR studies

Sorption of four estrogens by surface soils from 41 cultivated fields in Alberta, Canada

“…The equilibrium time is an important consideration in batchequilibrium experiments (Wauchope et al, 2002), but difficult to generalize when working with four estrogens and 121 soils because previous studies report that equilibrium times are dependent on the molecular structure of the chemical of interest (Lee et al, 2003;Flogeac et al, 2005), the properties of the soil (Qualls, 2000) and environmental parameters (Renaud et al, 2004). For determining an appropriate equilibrium time, preliminary batch-equilibrium runs were conducted in duplicates.…”

Biosorption of Cu(II) ions onto the litter of natural trembling poplar forest

“…For this aim, the main information provided by this technique are the chemical identity, valence states and relative concentration of the metals involved in the biosorption processes [32]. In the early researches, the adsorption data were combined with EPR spectroscopy to obtain structural information about the metal binding and estimate of adsorption mechanism [33][34][35][36][37]. In this research, in order to compare the natural and copper binding LNTPF and estimate mechanism of copper ion biosorption, the Table 2 The FTIR spectral characteristics of LNTPF before and after adsorption EPR spectra were taken from the alone and copper loading.…”

Batch studies for the investigation of the sorption of the heavy metals Pb2+ and Zn2+ onto Amizour soil (Algeria)

“…The good agreement (R 2 ) with the experimental data suggests that the metal ions sorbed form a monolayer coverage on the adsorbent surface. The sites involved in the metal sorption are probably the acid moieties from the organic matter coated onto the mineral phases (Flogeac et al, 2005). The Freundlich isotherm parameters are also added for comparison.…”