Removal of Acid green 3 dye from waste water usingstabilizedFe0nano-particles bythe cross-linked pectin with succinic acid: Thermodynamic and kinetic studies

Fe0nano-particles (FNPs) were stabilized by the cross-linked pectin with succinic acid(CPS)to remove Acid green 3 (AG 3) as an anionic and azo dye from aqueous solutions. Transmission electron microscopy (TEM) showed that the diameter of FNPs-CPS was not less than 5 nm and about 93% of them were between 10 –46 nm. About 18% ofFNPs-CPSwas about 46 nm in diameter. X-ray diffraction (XRD) patternsdid not show a marked change in the crystal structure of FNPs, whereas the intensity of the peaks corresponding to the surface functional groups isreduced with using CPS. The removal percent of AG 3 was determined 88.3byFNPs-CPSforthe dye initial concentration of 200 ppm, atthe determined conditions.Thecomparison between the resultsofpotittnetitonirtntoitnetand pH studywith the removalefficiencyconfirmed that the–COOH ofthecross-linked pectinand its adsorption ability had the more effective rule than theFNPsaverage sizeand its reduction abilityto removeAG 3.

Keywords:

Acid green 3 , Succinic acid , Stabilizer agents , Fe0nano-particles