Effect of dissolved organic matter from Guangzhou landfill leachate on sorption of phenanthrene by Montmorillonite

Integrated investigations on the adsorption mechanisms of fulvic and humic acids on three clay minerals

“…Meanwhile, the d 0 0 1 reflection for basal spacing of the minerals in the XRD pattern did not suffer a significant change (Fig. S4 in the SM), indicating that FA and HA molecules did not significantly intercalate the mineral layers even for the 2:1 type of smectite and vermiculite [30]. Ligand exchange-surface complexation might be another important mechanism for FA/HA adsorption on the minerals.…”

“…7). The Fe 2p photoelectron spectra showed that the binding energy shifted toward lower energy by 0.10 and 0.19 eV for HA-and FA-vermiculite complexes compared with that of the original vermiculite, indicative a transfer of the electronic density from FA/HA to iron cation [30]. FA with lower molecular weight was easier than HA to get into close contact with vermiculite surface [8] and acted as a stronger -donor role than HA.…”

Adsorption of UV254 in Kerian River water onto ZeliacTM: Analysis using linear and non-linear forms of isotherm models

“…The values of calculated Q and b are listed in Table 4. As stated by Wu et al, (2011), negative values of Q and b signify that the surface of Zeliac TM has heterogeneous coverage instead of monolayer coverage. Interestingly, analysis of the experimental data using non-linear equation of Langmuir isotherm gave an opposite explanation, where positive values of both Q and b were obtained.…”

“…As a consequence, the price of activated carbon keeps increasing because of high demand. Therefore, several studies (Lafi et al, 2014;Krishni et al, 2014;Chan et al, 2012;Wu et al, 2011) have been conducted to search or develop new media that are comparable to activated carbon. In the meantime, the composite of activated carbon and zeolite shows a promising potential as alternative adsorbents (Foo and Hameed, 2011).…”

Production of Persistent Organic Pollutants from Cement Plants

“…For example, when these chemical reach soils, they will be preferentially adsorb on bioavailable organic components, such as humic substances (Wu et al, 2011). Also, they can be absorbed by plants and living organisms.…”