Shuai-wen Zou1, Yu-Ming Zheng2, and J. Paul Chen1. (1) Environmental Science and Engineering, Natioanl University of Singapore, Singapore, Singapore, (2) Division of Environmental Science and Engineering, Natioanl University of Singapore, Singapore, 117576, Singapore
The study of the adsorption performance to remove As(V) was carried out by using PVDF composited membranes with Zirconium hydroxide particles. The results of isotherm experiments demonstrated that data can be well described in terms of the Langmuir equation. The maximum adsorption capacity can be achieved at 21.5 mg/g of As(V) as the ratio of Zr(IV) particles and PVDF is 2:1. Adsorption kinetics of As(V) at two different concentrations followed pseudo-second-order rate equation. The optimum pH range for As(V) adsorption is found from 3 to 6. The morphology of the Zr(IV)/PVDF membrane was observed with a scanning electron microscope (SEM) which revealed the membrane with less particle dosage has smaller mean pore size and less apertures.