Novel magnetic cellulose acetate (CA) nanofibers were fabricated using electrospining process. A co-precipitated magnetite iron oxide nanoparticles were immobilized into CA nanofibers in different weights ratios (0.2–2.5% wt/v) with CA concentration of 15% (wt %), applied electric voltage of 20 KV, feeding rate of 1.5 ml/h and 7 cm distance between needle tip to collector. The prepared iron oxide nanoparticles were characterized using transmission electron microscope, X-ray diffraction, Fourier transform infrared spectrophotometer (FT-IR) and vibrating sample magnetometer (VSM) respectively. The magnetic nanofibers were characterized by scanning electron microscopy, FT-IR, thermogravimetric analysis and VSM. The fabricated composite nanofibers were evaluated as sorbent matrix for lead decontamination form aqueous solution using batch technique. The influence of solution pH, contact time and adsorbent concentration on the removal efficiency was investigated. Adsorption Kinetics models and isotherms were applied for the lead decontamination process onto the fabricated composite nano-fiber. The kinetics of the sorption process revealed that the pseudo second order model relatively more fitted than pseudo first order. On the other hand, both of Langmuir and Freundlich isotherms gave comparable fitness to adsorption data with high coefficient of regression 0.999.
- cellulose acetate
- heavy metals
- magnetic nanocomposite
- First received 21 March 2016.
- Accepted in revised form 19 July 2016.
- © IWA Publishing 2016