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3篇 您的检索式:作者名="Ruobin Dai"
    题名 作者 年代 出处 被引量
1A cross-sectional TEM sample preparation method for films deposited on metallic substrates显示文摘Yan Liu Ruobin Wang Xinqiu Guo Jiawei Dai 2006Materials Characterization2006,,7:1
2Tuning the primary selective nanochannels of MOF thin-film nanocomposite nanofiltration membranes for efficient removal of hydrophobic endocrine disrupting compounds显示文摘Metal organic framework(MOF)incorporated thin-film nanocomposite(TFN)membranes have the potential to enhance the removal of endocrine disrupting compounds(EDCs).In MOF-TFN membranes,water transport nanochannels include(i)pores of polyamide layer,(ii)pores in MOFs and(iii)channels around MOFs(polyamide-MOF interface).However,information on how to tune the nanochannels to enhance EDCs rejection is scarce,impeding the refinement of TFN membranes toward efficient removal of EDCs.In this study,by changing the polyamide properties,the water transport nanochannels could be confined primarily in pores of MOFs when the polyamide layer became dense.Interestingly,the improved rejection of EDCs was dependent on the water transport channels of the TFN membrane.At low monomer concentration(i.e.,loose polyamide structure),the hydrophilic nanochannels of MIL-101(Cr)in the polyamide layer could not dominate the membrane separation performance,and hence the extent of improvement in EDCs rejection was relatively low.In contrast,at high monomer concentration(i.e.,dense polyamide structure),the hydrophilic nanochannels of MIL-101(Cr)were responsible for the selective removal of hydrophobic EDCs,demonstrating that the manipulation of water transport nanochannels in the TFN membrane could successfully overcome the permeability and EDCs rejection trade-off.Our results highlight the potential of tuning primary selective nanochannels of MOF-TFN membranes for the efficient removal of EDCs.Ruobin Dai Hongyi Han Yuting Zhu Xi Wang Zhiwei Wang 2022Frontiers of Environmental Science & Engineering2022,16,4:0
3Electrochemical removal and recovery of phosphorus from wastewater using cathodic membrane filtration reactor显示文摘Removal and recovery of phosphorus(P) from wastewater is of great importance to addressing the challenges of eutrophication and phosphorus shortage. The P removal and recovery performance of conventional electrochemical precipitation approach was constrained by the limited mass transfer rate. Herein,a cathodic membrane filtration(CMF) reactor was developed using Ti/SnO_(2)-Sb anode and titanium mesh cathodic membrane module to achieve efficient removal and recovery of P in wastewater. Compared with the flow-by mode, the CMF system in the flow-through mode exhibited excellent P removal performance due to the markedly enhanced mass transfer. At the current density of 4 A/m^(2), membrane flux of 16.6 L m^(-2)h^(-1), and Ca/P molar ratio of 1.67, the removal efficiency of P was 96.2% and the energy consumption was only 45.7 k Wh/kg P. The local high p H of cathode surface played a vital role in P removal,which substantially accelerated the nucleation of calcium phosphate(Ca P). Based on the crystalline and morphological characterization of the precipitates, the hydroxyapatite was the most stable crystalline phase of Ca P, which was transformed from intermediate phases(such as dicalcium phosphate and amorphous calcium phosphate). This study paves the way for applying electrochemical membrane filtration system for P removal and recovery from wastewater.Lehui Ren Jun Xu Ruobin Dai Zhiwei Wang 2023Chinese Chemical Letters2023,34,4:0
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