An electrochemical membrane reactor enables efficient hydrogen generation.
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Establishing electro-functionalized gravity-driven ceramic membrane filtration (EGDCM) for decentralized treatment of algae-laden brackish water: Comparison of in-situ electro-oxidation and ex-situ electro-coagulation.
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State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Algae-laden brackish water (ABW) has remarkably threatened drinking water safety in warm coastal areas. Although gravity-driven ceramic membrane filtration (GDCM) exhibits high potential in ABW treatment during decentralized water supply, membrane fouling is still a critical problem. Herein, GDCM was skillfully electro-functionalized (EGDCM) by in-situ electro-oxidation (ISEO) based on self-fabricated Ti/SnO-Sb dimensionally stable anode (DSA) (EO-EGDCM) and ex-situ electro-coagulation (ESEC) based on iron anode (EC-EGDCM) in this study.
View Article and Find Full Text PDFReady-to-use polymeric films used as the electrified liquid-liquid interface supports.
Talanta
November 2024
University of Lodz, Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, Electrochemistry@Soft Interfaces Team, Tamka 12, Lodz 91-403, Poland.
In this work, we have tested two commercially available polymeric films: one with natural porosity (polyvinylidene difluoride - PVDF) and the other modified to include micropores (ethylene-vinyl acetate - EVA) created through needle puncturing. Subsequently, these films were successfully employed for the miniaturization of the electrified liquid-liquid interface formed between water and 1,2-dichloroethane solutions. The geometry of the membranes was assessed with confocal microscopy, the aqueous phase wettability was evaluated with a drop-shape analyzer whereas their ability to support the electrified liquid-liquid interfaces was followed with ion transfer voltammetry.
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Department of Chemical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India.
The conducting polymer polyaniline (PANI) has shown significant interest for the development of electrified membranes (EMs) with superior antifouling characteristics. However, the blending and doping of PANI with other polymers and nanomaterials highly influence the properties of the membrane surface. PANI exists in two forms: oxidized, known as emeraldine salt (ES), and unoxidized, referred to as emeraldine base (EB).
View Article and Find Full Text PDFPressure-induced piezoelectric response for mitigating membrane fouling in surface water treatment: Insights from continuous operation and biofouling characterization.
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School of Electronic and Information Engineering, Beihang University, Beijing 100191, China. Electronic address:
Organic fouling and biofouling represents a critical challenge encountered by the membrane-based water treatment process. Herein, a piezoelectric PVDF membrane (PEM), capable of generating electrical responses to hydraulic pressure stimuli, was synthesized and employed for mitigating the fouling in surface water treatment. The surface-hydrophobilized PEM demonstrated sensitive and enhanced underwater output performance in response to increasing transmembrane pressure (TMP) during constant-flux filtration, with signals reaching up to ∼800 mV at a TMP of ∼80 kPa.
View Article and Find Full Text PDFSelective O-to-HO Electrosynthesis by a High-Performance, Single-Pass Electrofiltration System Using Ibuprofen-Laden CNT Membranes.
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Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
Producing HO through a selective, two-electron (2e) oxygen reduction reaction (ORR) is challenging, especially when it serves as an advanced oxidation process (AOP) for cost-effective water decontamination. Herein, we attain a 2e-selectivity HO production using a carbon nanotube electrified membrane with ibuprofen (IBU) molecules laden (IBU@CNT-EM) in an ultrafast, single-pass electrofiltration process. The IBU@CNT-EM can generate HO at a rate of 25.
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