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X-ORIGINAL-URL:https://www.fst.um.edu.mo
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DTSTART:20180101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Macau:20180828T150000
DTEND;TZID=Asia/Macau:20180828T160000
DTSTAMP:20260523T040013
CREATED:20180828T070052Z
LAST-MODIFIED:20220927T043443Z
UID:6005-1535468400-1535472000@www.fst.um.edu.mo
SUMMARY:Polymer-based Nanocomposite for Scale-up Water Remediation
DESCRIPTION:Instructors/Speakers\nProf. Bingcai PAN\nDeputy Dean and Professor\nSchool of Environment\nNanjing University\nNanjing\nChina \nAbstract\nNanomaterials exhibit promising performance in water decontamination via adsorption\, catalytic degradation\, and other processes. However\, the ultrafine particle size also brings issues including excessive pressure drop in flow-through systems and environmental risk arising from nanoparticle release. To overcome the bottleneck of most nanomaterials in full-scale manipulation\, a series of millimetre-sized nanocomposites have been developed via in situ formation of nanoparticles (e.g. metal oxides/hydroxides/phosphates) confined in the pore channels of ion exchanger hosts. Such nanocomposites are suitable for application in fixed-bed reactors owing to their tunable size (0.6-1.0 mm) and excellent hydrodynamic properties. The confinement effect induced by the network pore structure of the cross-linked hosts tend to maintain the nanoscale nature of the embedded nanoparticles. Furthermore\, the non-diffusible charges fixated on the host skeleton enhance the permeation of ionic pollutants inside the pore channels. Thus\, the polymer-supported nanocomposites have demonstrated favorable adsorption of ionic pollutants such as Pd(II)\, Cd(II)\, Cu(II)\, As(V)\, F-\, P(V)\, and have been successfully applied in full-scale advanced water treatments. Recently\, novel millimeter-sized nanocomposites of inorganic skeleton (e.g. Ce-Ti-Zr ternary oxide) have been developed for catalytic oxidation processes\, and have showed satisfactory performance in mineralization of recalcitrant pollutants such as oxalic acid. \nBiography\nProf. Pan obtained his PhD degree from Nanjing University (Environmental Engineering) in 2003. He is currently deputy dean for School of Environment\, deputy director for State Key Laboratory of Pollution Control and Resource Reuse\, deputy director for National Engineering Center of Organic Pollution Control and Resource Reuse\, and chair for Department of Environmental Engineering. He has been awarded Distinguished Changjiang Scholar\, 2015 National Technological Invention Award (2nd Prize)\, 2014 Technological Invention Award By Ministry of Education (1st Prize)\, 2013 Chinese Universities Tech-Invention Award (1st Prize)\, 2012 Young Scientist Award of Jiangsu Province\, China\, 2010 Prosper.net-Scopus Young Researcher Award\, 2008 Asian Young Researcher Award (Conferred by Conference of Asian University Presidents). He is currently serving as Associate Editor\, Chemical Engineering Journal (Elsevier); Editor\, Environmental Science and Pollution Research (Springer); Editor\, Frontiers of Environmental Science and Engineering (Springer); and Associate Editor-in Chief\, Journal of Zhejiang University Science-A (Springer). \nHe has published many papers on high impact factored journals including Chemical Engineering Journal\, Chemosphere\, Water Research\, Environmental Science and Technology\, Scientific Reports\, Journal of Hazardous Materials\, Bioresource Technology\, Science of the Total Environment\, and Separation and Purification Technology. \n 
URL:https://www.fst.um.edu.mo/event/polymer-based-nanocomposite-for-scale-up-water-remediation/
LOCATION:E11-1009
CATEGORIES:cee_events,event_list,seminarslectures
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Macau:20180828T160000
DTEND;TZID=Asia/Macau:20180828T170000
DTSTAMP:20260523T040013
CREATED:20180828T080049Z
LAST-MODIFIED:20220927T043443Z
UID:6002-1535472000-1535475600@www.fst.um.edu.mo
SUMMARY:Development of Polymeric Lanthanum Nanocomposite for Phosphorus Removal and Recovery：Fundamentals and Application
DESCRIPTION:Instructors/Speakers\nDr. Yanyang ZHANG\nAssistant Researcher\nSchool of the Environment\nNanjing University\nNanjing\nChina \nAbstract\nIn recent years\, polymer supported nano-sized metal oxides (Fe or Zr based) has attracted great attention for their sound performance in advanced phosphorus removal and recovery. In our study\, a new nanocomposite adsorbent La-201 of extremely high capacity and specific affinity towards phosphate was developed\, where hydrated La(III) oxides (HLO) nanoclusters were immobilized inside the networking pores of the polystyrene anion exchanger D-201. Column adsorption runs by using La-201 could effectively treat ~6500 bed volumes (BV) of a synthetic feeding solution before breakthrough occurred (from 2.5 mg P/L in influent to <0.5 mg P/L in effluent)\, approximately 11 times magnitude higher than HFO-201. The exhausted La-201 could be regenerated for repeated use without any significant capacity loss. Based on STEM-EDS\, XPS\, XRD\, and SSNMR analysis\, and the formation of LaPO4·xH2O during P uptake by La is verified to be the dominant pathway\, this transformation is reversible after regeneration. However\, it was difficult for bulk La(OH)3/HLO nanoparticles to transform to LaPO4·xH2O during P adsorption\, only a small portion of LaPO4·xH2O was observed after 25 days reaction. It was expected that the crystal transformation of HLO to LaPO4·xH2O is both time and space dependent. Our nanocomposites La-201 was employed for scaled-up and pilot stage test\, it could reduce TP (0.025-0.075 mg/L) from phosphorus contaminated water samples to <0.01 mg/L. We believe that La-201 is a promising tool to solve phosphorus problem from various water sources. \nBiography\nDr. Zhang obtained his PhD degree from Nanjing University (Environmental Engineering) in 2016. His research interest includes Phosphorus removal and recovery from waste streams; Empirical modeling and mechanistic modeling for water treatment system; and Novel adsorbents for water and wastewater treatment. He has authored papers published NanoImpact\, Environmental Science and Technology\, Chemosphere\, Chemical Engineering Journal\, Journal of Hazardous Materials\, Water Research\, and ACS Applied Material & Interface. \n 
URL:https://www.fst.um.edu.mo/event/development-of-polymeric-lanthanum-nanocomposite-for-phosphorus-removal-and-recovery%ef%bc%9afundamentals-and-application/
LOCATION:E11-1009
CATEGORIES:cee_events,event_list,seminarslectures
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