Instructors/Speakers Prof. Bingcai PAN Deputy Dean and Professor School of Environment Nanjing University Nanjing China Abstract Nanomaterials 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 ...

Instructors/Speakers Dr. Yanyang ZHANG Assistant Researcher School of the Environment Nanjing University Nanjing China Abstract In 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 ...