Enhanced gemfibrozil removal from treated wastewater by designed “loopy” clay-polycation sorbents: Effect of diclofenac and effluent organic matter

Dissolved organic matter adsorption from surface waters by granular composites versus granular activated carbon columns: An applicable approach

“…Zeta potential of MMT is -34 mV and upon PDADMAC adsorption (0.1 g/g) charge reversal was reached for the PDADMAC-MMT composite, +30 mV. The BET surface area of MMT is ~30 m 2 /g as reported in the literature (Barbier et al, 2000;Levy et al, 2019) while the BET of the PDADMAC-MMT (no significant difference between the powder and granules) was lower, 14-15 m 2 /g. The reduction in BET surface area was attributed to high polymer adsorption on the MMT Prostprint of: Water Research 115920 (2020) In Press DOI: 10.1016/j.watres.2020.115920 surface (Levy et al, 2019), since the BET surface area measurements, analyze the adsorption of nitrogen (N 2 ), which has little interaction with the polymers and high interactions with the clay surface (Carrado, 2000;Mayer, 1999).…”

“…The BET surface area of MMT is ~30 m 2 /g as reported in the literature (Barbier et al, 2000;Levy et al, 2019) while the BET of the PDADMAC-MMT (no significant difference between the powder and granules) was lower, 14-15 m 2 /g. The reduction in BET surface area was attributed to high polymer adsorption on the MMT Prostprint of: Water Research 115920 (2020) In Press DOI: 10.1016/j.watres.2020.115920 surface (Levy et al, 2019), since the BET surface area measurements, analyze the adsorption of nitrogen (N 2 ), which has little interaction with the polymers and high interactions with the clay surface (Carrado, 2000;Mayer, 1999). Despite the difference at the macro-scale, between the PDADMAC-MMT powder (0.04-0.14 mm) and the granules (1-2 mm), no significant changes were observed at the micro-scale, as observed from the SEM images (Figure 1C).…”

Self-regenerable clay polymer nanocomposite for organophosphate adsorption and degradation

“…3). The infrared spectra of 4-PA and PVP were collected and a band at 1600 cm −1 , associated with CN bonds, was obtained, while an additional band at 1640 cm −1 , Environmental Science: Nano Paper associated with pyridinium, [61][62][63] was obtained for the polymer, indicating a successful substitution (Fig. 3A).…”