Porous organic polymers as a promising platform for efficient capture of heavy metal pollutants in wastewater DOI

Mathias Gomez-Suarez,

Yun-Ze Chen, Jianhua Zhang

et al.

Polymer Chemistry, Journal Year: 2023, Volume and Issue: 14(35), P. 4000 - 4032

Published: Jan. 1, 2023

Heavy metal pollution in aquatic systems is a tremendous threat to the environment and human beings. Porous organic polymers (POPs) as efficient promising adsorbents have great potential for use removal from wastewater.

Language: Английский

Tailored ultra-low pressure nanofiltration membranes for advanced drinking water treatment DOI
Xiaoxiang Cheng,

Cunxian Lai,

Xuewu Zhu

et al.

Desalination, Journal Year: 2022, Volume and Issue: 548, P. 116264 - 116264

Published: Nov. 24, 2022

Language: Английский

Citations

57
Highly permeable and acid-resistant nanofiltration membrane fabricated by in-situ interlaced stacking of COF and polysulfonamide films DOI
Wei Lai, Linglong Shan, Ju Bai

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 450, P. 137965 - 137965

Published: July 8, 2022

Language: Английский

Citations

49
Recent trends and challenges with the synthesis of membranes: Industrial opportunities towards environmental remediation DOI
Awais Ahmad,

Sadaf Tariq,

Jahid Uz Zaman

et al.

Chemosphere, Journal Year: 2022, Volume and Issue: 306, P. 135634 - 135634

Published: July 8, 2022

Language: Английский

Citations

43
Polyamide layer modulation for PA-TFC membranes Optimization: Developments, Mechanisms, and implications DOI

Guorong Xu,

Zi-Han An,

Min-Wang

et al.

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 311, P. 123200 - 123200

Published: Jan. 20, 2023

Language: Английский

Citations

41
Demystifying the Role of Surfactant in Tailoring Polyamide Morphology for Enhanced Reverse Osmosis Performance: Mechanistic Insights and Environmental Implications DOI

Qimao Gan,

Lu Elfa Peng, Zhe Yang

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(4), P. 1819 - 1827

Published: Jan. 18, 2023

Surfactant-assisted interfacial polymerization (IP) has shown strong potential to improve the separation performance of thin film composite polyamide membranes. A common belief is that enhanced attributed accelerated amine diffusion induced by surfactant, which can promote IP reaction. However, we show membrane for Tween 80 (a surfactant), even though it decreased diffusion. Indeed, closely related its roughness features with numerous nanovoids. Inspired nanofoaming theory relates nanobubbles degassed during reaction, hypothesize surfactant stabilize generated tailor formation Accordingly, obtained enlarged nanovoids when was added below critical micelle concentration (CMC). In addition, both permeance and selectivity were enhanced, thanks reduced defects in layer. Increasing above CMC resulted shrunken deteriorated performance, be ascribed stabilization effect caused formation. Interestingly, better antifouling also observed surfactant-assisted Our current study provides mechanistic insights into role may have important implications more efficient membrane-based desalination water reuse.

Language: Английский

Citations

38
Does Surface Roughness Necessarily Increase the Fouling Propensity of Polyamide Reverse Osmosis Membranes by Humic Acid? DOI

Qimao Gan,

Chenyue Wu, Li Long

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(6), P. 2548 - 2556

Published: Jan. 31, 2023

Surface roughness has crucial influence on the fouling propensity of thin film composite (TFC) polyamide reverse osmosis (RO) membranes. A common wisdom is that rougher membranes tend to experience more severe fouling. In this study, we compared behaviors a smooth membrane (RO-s) and nanovoid-containing rough (RO-r). Contrary traditional belief, observed for RO-s, which can be ascribed its uneven flux distribution caused by "funnel effect". Additional tracer filtration tests using gold nanoparticles revealed patchlike particle deposition pattern, confirming adverse impact effect" water transport. contrast, experimentally lower explained by: (1) weakened thanks presence nanovoids, regulate transport pathway through (2) decreased average localized over surface due increased effective area nanovoid-induced features. The current study provides fundamental insights into critical role in fouling, may have important implications future development high-performance antifouling

Language: Английский

Citations

37
Making waves: Why do we need ultra-permeable nanofiltration membranes for water treatment? DOI Creative Commons
Zhe Yang, Chenyue Wu, Chuyang Y. Tang

et al.

Water Research X, Journal Year: 2023, Volume and Issue: 19, P. 100172 - 100172

Published: Feb. 20, 2023

Over the last few decades, developing ultra-permeable nanofiltration (UPNF) membranes has been a focus research area to support NF-based water treatment. Nevertheless, there have ongoing debates and doubts on need for UPNF membranes. In this work, we share our perspectives why are desired We analyze specific energy consumption (SEC) of NF processes under various application scenarios, which reveals potential reducing SEC by 1/3 2/3 depending prevailing transmembrane osmotic pressure difference. Furthermore, could potentially enable new process opportunities. Vacuum-driven submerged NF-modules be retrofitted existing water/wastewater treatment plants, offering lower cost compared conventional systems. Their use in membrane bioreactors (NF-MBR) can recycle wastewater into high-quality permeate water, enables energy-efficient reuse single step. The ability retaining soluble organics may further extend NF-MBR anaerobic dilute municipal wastewater. Critical analysis development huge rooms attain improved selectivity antifouling performance. Our perspective paper offers important insights future technology, lead paradigm shift burgeoning field.

Language: Английский

Citations

36
NaHCO3 addition enhances water permeance and Ca/haloacetic acids selectivity of nanofiltration membranes for drinking water treatment DOI
Li Long, Lu Elfa Peng, Shenghua Zhou

et al.

Water Research, Journal Year: 2023, Volume and Issue: 242, P. 120255 - 120255

Published: June 20, 2023

Language: Английский

Citations

32
Inhibiting Polyamide Intrusion of Thin Film Composite Membranes: Strategies and Environmental Implications DOI
Yu‐Kun Qian,

Haozheng Li,

Jiancong Lu

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(29), P. 10860 - 10869

Published: July 10, 2023

Thin film composite polyamide (TFC) nanofiltration (NF) membranes represent extensive applications at the water-energy-environment nexus, which motivates unremitting efforts to explore with higher performance. Intrusion of into substrate pores greatly restricts overall membrane permeance because excessive hydraulic resistance, while effective inhibition intrusion remains technically challenging. Herein, we propose a synergetic regulation strategy pore size and surface chemical composition optimize selective layer structure, achieving for separation performance enhancement. Although reducing prevented intrapore, was adversely affected due exacerbated "funnel effect". Optimizing structure via modification substrate, where reactive amino sites were in situ introduced by ammonolysis polyethersulfone allowed maximum without size. The optimal exhibited excellent water permeance, ion selectivity, emerging contaminants removal capability. accurate optimization is anticipated provide new avenue state-of-the-art fabrication, opens opportunities promoting more efficient membrane-based treatment applications.

Language: Английский

Citations

31
Fouling minimization with nanofluidic membranes; How electric field may help DOI

Ahmad Aminnia,

Mahdi Khatibi, Seyed Nezameddin Ashrafizadeh

et al.

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 325, P. 124698 - 124698

Published: July 31, 2023

Language: Английский

Citations

30