Selective removal of mercury as HgCl42− from natural gas well produced water by TOA via HFSLM

The effective recovery of praseodymium from mixed rare earths via a hollow fiber supported liquid membrane and its mass transfer related

“…12 as shown in Table 4. The results showed that the permeability coefficient increased with the extractant concentration-agreed with the earlier report by Pancharoen et al [30].…”

Simultaneous removal of arsenic and mercury from natural-gas-co-produced water from the Gulf of Thailand using synergistic extractant via HFSLM

“…In accordance with several studies of using liquid membrane (LM) to remove trace metal ions from aqueous solutions, in particular, the simultaneous separation of mercury and lignosulfonate from dilute synthetic solution by a flat sheet supported liquid membrane [6] and our previous works via hollow fiber supported liquid membrane (HFSLM) for industrial wastewaters [10,11] and coproduced waters [12,13], inevitably, HFSLM is a promising method to treat a very low metal ions concentration effectively. The selection of types of the extractants and stripping solutions for arsenic and/or mercury separation was reviewed from the following litera- ture because they played important role in the separation.…”

Mass transfer modeling on the separation of tantalum and niobium from dilute hydrofluoric media through a hollow fiber supported liquid membrane

“…12(a-f) illustrates the comparison of concentrations of tantalum from experimental data and theoretical values estimated using Eq. (31). The results indicate that when the concentration of Aliquat336 was lower than 4% (v/v), the mass transfer model was satisfactory, as demonstrated in Fig.…”

“…Because the stripping reaction is instantaneous, the distribution of the stripping phase is neglected. It is noteworthy that k s values are very high when compared with k i and k s values [31].…”