Synthesis, Characterization and Performance Validation of Hybrid Cation Exchanger Containing Hydrated Ferric Oxide Nanoparticles (HCIX-Fe) for Lead Removal from Battery Manufacturing Wastewater

Nopphorn Chanthapon; Pornsawai Praipipat; Sudipta Sarkar; Surapol Padungthon

doi:10.4028/www.scientific.net/KEM.718.67

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 718Synthesis, Characterization and Performance...

Synthesis, Characterization and Performance Validation of Hybrid Cation Exchanger Containing Hydrated Ferric Oxide Nanoparticles (HCIX-Fe) for Lead Removal from Battery Manufacturing Wastewater

Abstract:

This study is aimed to synthesize, characterize and validate the performance of a novel hybrid nanoadsorbent for selective removal of lead from a battery manufacturing wastewater. The hybrid nanosorbent, named as HCIX-Fe, was prepared by impregnating hydrated Fe (III) oxide (HFO) nanoparticles inside polymeric cation exchange resin containing negatively charged sulfonic acid (-SO₃^-) fixed functional groups. HCIX-Fe was characterized by SEM-EDX and XRD to confirm the distribution and determination of phase of HFO dispersed inside the hybrid nanosorbent. Fixed-bed column runs with HCIX-Fe beads were carried out using wastewater from a battery manufacturing plant. The wastewater had a pH of 1.8 and contained of 3.5 mg/L of Pb²⁺ coexisted with 250 mg/L Ca²⁺ ions. The results have shown that HCIX-Fe column could treat lead-contaminated water up to 6,500 bed volumes (BVs) before the occurrence of breakthrough concentration of 0.2 mg/L Pb²⁺ resulting in a removal capacity of 6.85 mg Pb²⁺/ml of the HCIX-Fe bed. Under similar condition, adsorbent columns with cation exchange resin (C100), granulated activated carbon (GAC) and granulated activated carbon impregnated with HFO (GAC-Fe), could treat the same wastewater only until 400, 900 and 1,500 BVs, respectively. When compared with the parent adsorbents, impregnation by HFO greatly enhanced the Pb²⁺ removal capacity of C100 and GAC by 1,625% and 167%, respectively. Both HFO and high density of sulfonic acid (-SO₃^-) in the host cation exchanger are individually capable of selective removal of Pb²⁺ ions; however the hybrid material demonstrated a synergistic effect for Pb²⁺ removal through the Donnan Membrane effect. Due to amphoteric behavior of HFO, the HCIX-Fe could be regenerated and reused with 10 BVs of 2% HNO₃ and 1% FeCl₃·6H₂O solution.

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Key Engineering Materials (Volume 718)

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67-71

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.718.67

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Online since:

November 2016

Authors:

Nopphorn Chanthapon, Pornsawai Praipipat, Sudipta Sarkar, Surapol Padungthon*

Keywords:

Adsorbent, Ferric-Oxide, Granular Activated Carbon, Lead, Nanoparticles

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