Adsorbability of modified poly(vinyl alcohol-co-ethylene) nanofiber membrane to heavy metal ions

In order to solve the problem on the pollution of heavy metal ions to the environment, poly(vinyl alcohol-co-ethylene) (PVA-co-PE) modified nanofiber membrane was prepared for the adsorption of heavy metal ions. The influences of initial metal concentration, adsorption time and pH on the metal adsorption capacity were discussed. The results show that the adsorption rate of Hg2+ of the nanofiber membrane modified by rhodamine meets the pseudo-second order equation, namely the chemical adsorption. And the adsorption isotherm belongs to Langmuir isotherm model. The maximum removal capacity for Hg2+ reaches 17.26 mg/g when pH=3. Besides, the modified membrane has certain recyclability. Furthermore, it exhibits promising antimicrobial properties and is capable of removing the heavy metal mixture (Hg2+ and Pb2+), providing an effective method for the treatment of heavy metal-polluted wastewater. Copyright No content may be reproduced or abridged without authorization.