Fabrication of PEBA/Cu₂O mixed-matrix membranes and their application in pyridine recovery from aqueous solution

Abstract

The lone pair of electrons of the pyridine nitrogen atom can form a complex with some metal ions such

Hydrophobic Two-Dimensional MoS2 Nanosheets Embedded in a Polyether Copolymer Block Amide (PEBA) Membrane for Recovering Pyridine from a Dilute Solution

“…FT-IR spectra of MoS 2 , PEBA/MoS 2 -0, and PEBA/MoS 2 -10 are shown in Figure . The bands around 3500–3300 and 1646 cm –1 are attributed to the N–H stretching vibration of polyamide and the stretching vibration of the H–N–CO group, respectively, as shown by PEBA/MoS 2 -0. It is noteworthy that an obvious band at 3436 cm –1 attributed to the O–H stretching, was observed for MoS 2 and the PEBA/MoS 2 -10 membrane.…”

“…Table describes the comparison of the pervaporation performance of the PEBA/MoS 2 hybrid membrane with other membranes reported in the literature. ,,, It can be found that the PEBA/MoS 2 hybrid membrane exhibits encouraging pervaporation performance.…”

“…The results show that the PEBA membrane has high selectivity to pyridine. Chen et al 27 studied the application of PEBA/Cu 2 O MMMs for the recovery of pyridine from the pyridine/water solution. The result indicates that PEBA/Cu 2 O MMMs are expected to be the candidate materials for the actual recovery of pyridine.…”

Pervaporation Removal of Pyridine from Saline Pyridine/Water Effluents Using PEBA-2533 Membranes: Experiment and Simulation

“…Thus, it is important to recover pyridine from wastewater, which is both beneficial to the environment and economic value. − A significant number of studies have been conducted on pyridine wastewater treatment, such as adsorption and extractive distillation. ,, However, it is difficult to recycle pyridine from a dilute aqueous solution . On the one hand, pyridine and water would form an azeotrope at 93.6 °C, with 59 wt % pyridine in it; on the other hand, pyridine is present in effluents at a low concentration, which makes the recovery of pyridine a huge challenge. As a green membrane separation technique for separating azeotropic liquid mixtures, pervaporation could reduce 50–70% energy consumption in many cases as compared to the traditional separation processes, and as a result, it has received extensive attention from researchers. − …”

Extraction of Organic Volatile Pollutants in Over-Saturated Water by Pervaporation Technique Using a Poly (Dimethylsiloxane)-Based Sealer as a Membrane

“…Pervaporation has numerous advantages over other conventional techniques: high separation efficiency, efficiency in breaking azeotropes [13] and microemulsions [14][15][16]; being non-polluting, energy saving, easy to incorporate in production lines, used in industrial refining processes; and environment protection (water treatment). This process is mainly used for dehydrating organic and hydro-organic compounds [16][17][18], removing organic matter at low concentrations from aqueous solutions [19][20][21], and separating organic-organic compounds [22][23][24].…”