Pd–O2 interaction and singlet oxygen formation in a novel reactive electrochemical membrane for ultrafast sulfamethoxazole oxidation

Ren, Lehui; Chen, Mei; Ma, Jinxing; Li, Yang; Wang, Zhiwei

doi:10.1016/j.cej.2021.131194

Cited by 33 publications

(12 citation statements)

References 51 publications

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“…Water reclamation enables exploiting additional water sources for addressing global water scarcity. , Reclaimed water that contains moderate mineral ions (e.g., Mg 2+ , Ca 2+ ) with a fairly low concentration of emerging micropollutants (EMPs) is beneficial for drinking water supply, groundwater replenishment, and agricultural irrigation, − while the EMPs, which should be indeed effectively removed, can induce severe adverse impacts on aqueous eco-environment and human bodies even at a trace level of micrograms per liter or nanograms per liter. , However, reverse osmosis (RO) membranes, which are prevailed in water reclamation and proven effective for EMPs removal, , typically exhibit a high rejection of mineral salts, rendering costly remineralization a necessary post-treatment step. Furthermore, the highly saline concentrate will induce an additional burden to the subsequent treatment, e.g., biological treatment. , Therefore, developing a selective membrane that can allow for the passage of mineral salts while maintaining a high rejection of EMPs is highly desirable.…”

Section: Introductionmentioning

confidence: 92%

Humic Acid Modified Selective Nanofiltration Membrane for Efficient Separation of PFASs and Mineral Salts

Wang

Han

et al. 2022

ACS EST Water

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Reclaiming water that contains moderate mineral ions with a fairly low concentration of emerging micropollutants (EMPs) is beneficial for drinking water supply, groundwater replenishment, and agricultural irrigation. However, how to achieve the separation of EMPs and mineral salts, in an efficient and environmental-friendly way, remains a technical challenge. Herein, we developed a humic acid (HA) modified selective nanofiltration (NF) membrane for the efficient separation of persistent perfluoroalkyl substances (PFASs, as model EMPs) and mineral salts. The hydrophobic HA regulated the reaction kinetic of polyamide (PA) formation and consequently produced a looser and thinner PA structure. The NF-HA membrane possessed a high water permeance of 19.1 L m–2 h–1 bar–1 and enabled the selective removal of PFASs (>90% for six compounds) with a fairly low rejection of Ca2+ and Mg2+ (<10%). The passage of mineral salts for the NF-HA membrane was ascribed to weakened size exclusion and electrostatic repulsion effect, while the maintained rejection of PFASs was due to the increased electrostatic repulsion and reduced hydrophobic–hydrophilic interaction. Our study offers a green and effective approach to achieve efficient separation of EMPs and mineral salts for the production of healthy reclaimed water.

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Section: Introductionmentioning

confidence: 92%

Humic Acid Modified Selective Nanofiltration Membrane for Efficient Separation of PFASs and Mineral Salts

Wang

Han

et al. 2022

ACS EST Water

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“…The substrates with active layers were then sintered in a specific atmosphere (e.g., a reducing atmosphere for Ti 4 O 7 ) to produce coated EAM. 43,44 For instance, Liu et al 45,46 fabricated a SnO 2 -Sb EAM using the sol−gel method. Initially, a mixture of citric acid and ethylene glycol was heated and agitated at 60 °C until the mixture was fully dissolved.…”

Section: Metal/metalmentioning

confidence: 99%

Electrochemical Anodic Oxidation-Based Membrane System for Micropollutant Removal

Li,

Zhao,

Zhang

et al. 2023

ACS EST Eng.

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Electrochemical anodic oxidation-based membrane systems have garnered significant attention in the field of micropollutant removal due to their inherent advantages, including enhanced mass transport, high electroactive area, and self-cleaning ability. This comprehensive review systematically summarizes the fabrication and operation modes of electrochemical anodic oxidation-based membranes, while providing detailed insights into the mechanisms by which these anodic membranes enhance micropollutant removal. Furthermore, the recent advancements in novel carbon-and metal/metal oxide-based electrochemical anodic oxidation membranes are first discussed in this review. We highlight the synergistic effect achieved through coupling electrochemical anodic oxidation membrane with other advanced oxidation processes involving electro-Fenton, ultrasound treatment, photoelectrocatalysis, and persulfate activation for improved micropollutant removal. The elucidation of these synergies further emphasizes the potential of electrochemical anodic membrane systems in addressing purification challenges. Moreover, this Review addresses the remaining challenges and opportunities for developing efficient electrochemical anodic oxidation-based membrane systems while paving the way for further research and development efforts.

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“…developed a new type of ultrahigh-throughput tubular filter coated with β -PbO 2 , which could remove norfloxacin and sulfamethoxazole of trace concentrations in surface water and wastewater effluent with a residence time of 2.0–5.4 s ( Yang et al., 2020a ). A novel reactive electrochemical film on a palladium-loaded porous Ti anode was prepared by Ren et al., in which singlet oxygen was directly generated on the anode by Pd-O 2 interaction, resulting in an ultrafast and efficient anodic oxidation of trace antibiotic sulfamethoxazole ( Ren et al., 2022 ).…”

Section: Applications Of Electrocatalytic Membranes For Micropollutan...mentioning

confidence: 99%

Recent advances in electrocatalytic membrane for the removal of micropollutants from water and wastewater

Ren

Chen

et al. 2022

iScience

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Pd–O2 interaction and singlet oxygen formation in a novel reactive electrochemical membrane for ultrafast sulfamethoxazole oxidation

Cited by 33 publications

References 51 publications

Humic Acid Modified Selective Nanofiltration Membrane for Efficient Separation of PFASs and Mineral Salts

Humic Acid Modified Selective Nanofiltration Membrane for Efficient Separation of PFASs and Mineral Salts

Electrochemical Anodic Oxidation-Based Membrane System for Micropollutant Removal

Recent advances in electrocatalytic membrane for the removal of micropollutants from water and wastewater

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