|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Streams: Recycling and Sustainability Joint Session
||Rapid Removal of Pb(II) from Acid Wastewater Using Vanadium Titanium-bearing Magnetite Particles Coated by Humic Acid (VTM-HA) Magnetic Particles
||Manman Lu, Yuanbo Zhang, Zijian Su, Bingbing Liu, Guanghui Li, Tao Jiang
|On-Site Speaker (Planned)
The acid wastewater contained toxic metal ions has become an increasingly important global environment concern and lead is one of the prime toxic heavy metals. Humic acid (HA) is a kind of natural organic matter which has a great adsorption capacity with metal cations (Pb2+, Cu2+, etc). Our previous researches have verified that HA has excellent adsorbing ability on vanadium titanium-bearing magnetite(VTM) particles. In this study, VTM-HA magnetic particles were prepared for removing Pb2+ from acid wastewater, which is easy recycled by magnetic separation. The VTM-HA was characterized using SEM, FTIR, etc. The effects of pH, ionic strength and VTM-HA concentration on the removal ratio of Pb2+ were determined by isothermal adsorption. The results indicated that Pb2+ adsorption was subject to pH and ionic strength. When initial Pb2+ concentration is 100mg/L, the residual concentration and removal of Pb2+ could reach 0.17mg/L and 99.83% respectively, far lower than the emission standard.