Improvement of permeability and rejection of an acid resistant polysulfonamide thin-film composite nanofiltration membrane by a sulfonated poly(ether ether ketone) interlayer

Zhu, Ye; Dou, Pengjia; He, Hailong; Lan, Hongling; Xu, Shanshan; Zhang, Yuebiao; He, Tianbai; Niu, Jilei

doi:10.1016/j.seppur.2020.116528

Cited by 49 publications

(15 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thin-film composite (TFC) reverse osmosis (RO) and nanofiltration (NF) membranes, consisting of an ultrathin (∼100 nm) polyamide selective layer on an ultrafiltration substrate, are the core for membrane-based desalination and water reuse. , However, conventional TFC membranes are strongly constrained by the “upper bound” trade-off between their water permeance and selectivity . Recently, a new class of thin-film nanocomposite membranes with an interlayered structure (TFNi) have been reported. − Up to date, a wide range of interfacial coatings have been applied (e.g., polyelectrolytes, polydopamine (PDA), − polyphenols, poly(ether ether ketone), halloysite nanotubes, carbon nanotubes, ,− and their derivatives, , ), with some studies showing an order of magnitude higher water permeance and simultaneously enhanced water/solute selectivity for TFNi membranes. ,, …”

Section: Introductionmentioning

confidence: 99%

Mechanistic Insights into the Role of Polydopamine Interlayer toward Improved Separation Performance of Polyamide Nanofiltration Membranes

Yang

Wang

Guo

et al. 2020

Environ. Sci. Technol.

167

View full text Add to dashboard Cite

Interlayered thin-film nanocomposite membranes (TFNi) are an emerging type of membranes with great potential to overcome the permeability–selectivity upper bound of conventional thin-film composite (TFC) nanofiltration and reverse osmosis membranes. However, the exact roles of the interlayer and the corresponding mechanisms leading to enhanced separation performance of TFNi membranes remain poorly understood. This study reports a polydopamine (PDA)-intercalated TFNi nanofiltration membrane (PA-PSF2, PDA coating time of 2 h) that possessed nearly an order of magnitude higher water permeance (14.8 ± 0.4 Lm–2 h–1 bar–1) than the control TFC membrane (PA-PFS0, 2.4 ± 0.5 Lm–2 h–1 bar–1). The TFNi membrane further showed enhanced rejection toward a wide range of inorganic salts and small organic molecules (including antibiotics and endocrine disruptors). Detailed mechanistic investigation reveals that the membrane separation performance was enhanced due to both the direct “gutter” effect of the PDA interlayer and its indirect effects resulting from enhanced polyamide formation on the PDA-coated substrate, with the “gutter” effect playing a more dominant role. This study provides a mechanistic and comprehensive framework for the future development of TFNi membranes.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanistic Insights into the Role of Polydopamine Interlayer toward Improved Separation Performance of Polyamide Nanofiltration Membranes

Yang

Wang

Guo

et al. 2020

Environ. Sci. Technol.

167

View full text Add to dashboard Cite

show abstract

“…Moreover, in order to obtain ideal permeability and selectivity, polar groups must be present on the polymer chains. Therefore, sulfonated aromatic polymers, such as sulfonated poly(ether ketone) and polysulphonamide are frequently investigated as ideal materials for preparing the acid resistant membrane [43,44]. In addition, the rapid development of IP monomer provides more opportunities for the design of acid resistant PA skin-layer.…”

Section: Chemical Resistant Nf Membranesmentioning

confidence: 99%

Nanofiltration membrane for bio‐separation: Process‐oriented materials innovation

Cao

Chen

Wan

et al. 2021

Engineering in Life Sciences

View full text Add to dashboard Cite

Nanofiltration (NF) with advantages of high efficiency and low‐cost has attracted increasing attentions in bio‐separation. However, the large‐scale application is limited by the inferior molecular selectivity, low chemical stability and serious membrane fouling. Many efforts, thus, have been devoted in NF materials design for specific applications to enhance the separation efficiency of bio‐products and increase membrane life‐time, as well as reduce the operating cost. This review summarized the recent progress of NF applications in bio‐separation, discussed various demands for NF membrane in the bio‐products purification and corresponding material innovations, finally proposed several practical suggestions for future research, which provided directions and guidance toward further product development and process industrialization.

show abstract

“…Efficiency and producibility of metal compounds recovery are achieved by membrane separation methods, i.e. reverse osmosis and ultrafiltration [Ali et al, 2021], as well as the use of acid-resistant membranes [Zhu et al, 2020]. The methods mentioned above are not yet widely used in mines due to considerable electric power consumption, operation complexity, no selectivity, deficiency and high price of membranes.…”

Section: Introductionmentioning

confidence: 99%

Waste Water Purification from Metal Ions by Ultra-Dispersed Natural Sorbents

Yerbolov¹,

Daumova²

2022

J. Ecol. Eng.

View full text Add to dashboard Cite

This work is devoted to mine wastewater purification from metal ions, such as copper, zinc, lead, cadmium, iron, and manganese. The rationale was provided for the possibility to purify the wastewater from metal ions with nonactivated and ultra-dispersed natural sorbents. The adsorption capacity of bentonite clay from Tagan deposit and shungite from Koksui deposit of the Republic of Kazakhstan was studied on the basis of its fraction composition. It was found that the most effective method of sorbents modification was mechanical activation. The comparative studies of metal ions adsorption efficiency were carried out with mechanically activated and ultra-dispersed bentonite clay and shungite. The experiment enabled to find out that ultra-dispersed bentonite clay is prospective for use in order to deeply purify multicomponent mine wastewater. The highest degree of metal ions extraction was achieved due to 30-minutes contact of wastewater.

show abstract

Improvement of permeability and rejection of an acid resistant polysulfonamide thin-film composite nanofiltration membrane by a sulfonated poly(ether ether ketone) interlayer

Cited by 49 publications

References 48 publications

Mechanistic Insights into the Role of Polydopamine Interlayer toward Improved Separation Performance of Polyamide Nanofiltration Membranes

Mechanistic Insights into the Role of Polydopamine Interlayer toward Improved Separation Performance of Polyamide Nanofiltration Membranes

Nanofiltration membrane for bio‐separation: Process‐oriented materials innovation

Waste Water Purification from Metal Ions by Ultra-Dispersed Natural Sorbents

Contact Info

Product

Resources

About