Ali N. Siyal and Saima Q. Memon and Latif Elçi and Aydan Elçi
Extraction of Polystyrene from Styrofoam Waste Synthesis of Novel Chelating Resin for the Enrichment and Speciation of Cr(III)Cr(VI) Ions in Industrial Effluents
212 - 215
2014
8
3
International Journal of Environmental and Ecological Engineering
https://publications.waset.org/pdf/9997749
https://publications.waset.org/vol/87
World Academy of Science, Engineering and Technology
Polystyrene (PS) was extracted from Styrofoam (expanded polystyrene foam) waste, so called white pollutant. The PS was functionalized with N,N Bis(2aminobenzylidene)benzene1,2diamine (ABA) ligand through an azo spacer. The resin was characterized by FTIR spectroscopy and elemental analysis. The PSNNABA resin was used for the enrichment and speciation of Cr(III)Cr(VI) ions and total Cr determination in aqueous samples by flame atomic absorption spectrometry (FAAS). The separation of Cr(III)Cr(VI) ions was achieved at pH 2. The recovery of Cr(VI) ions was achieved ≥ 95.0 at optimum parameters pH 2; resin amount 300mg; flow rates 2.0mL min1 of solution and 2.0mL min1 of eluent (2.0mol L1 HNO3). Total Cr was determined by oxidation of Cr(III) to Cr(VI) ions using H2O2. The limit of detection (LOD) and quantification (LOQ) of Cr(VI) were found to be 0.40 and 1.20μg L1, respectively with preconcentration factor of 250. Total saturation and breakthrough capacitates of the resin for Cr(IV) ions were found to be 0.181 and 0.531mmol g1, respectively. The proposed method was successfully applied for the preconcentrationspeciation of Cr(III)Cr(VI) ions and determination of total Cr in industrial effluents.
Open Science Index 87, 2014