Removal of crystal violet dye from aqueous solutions of modified rice husk

In this work, preparation of adsorbent nanoparticles based on treated low-value agricultural by-product rice husk (RH), and poly 2-acrylamide-2-methyl propane sulfonic acid (AMPS is reported for the removal of Crystal violet (CV) dye from water. The modified rice husk (MRH) was characterized by FTIR and TGA. Different factors affecting the adsorption capability of RH and MRH nanoparticles such as pH, contact time,initial metal ion concentration and also temperature were studied to investigate adsorption isotherms, kinetics and thermodynamics. The equilibrium sorption data for MRH nanoparticles obeyed the Langmuir isotherm equation with maximum sorption capacity of 93.45mg g-1, and fitted best the pseudo-second order model. Regeneration of adsorbent was easily performed by adsorption/desorption experiments followed for 4 cycles

کلیدواژه ها:

Rice husk ، dye removal ، Nanoparticles ، Adsorption ، Regeneration