Efficient removal/recovery of Pb onto environmentally friendly fabricated copper ferrite nanoparticles

Yao Jen Tu, Chen Feng You, Mei Hsuan Chen, Yan Ping Duan

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Copper ferrite (CuFe2O4), a novel type of nanoparticle manufactured from industrial sludge, has been found to be effective for Pb remediation in aqueous solutions. Our results indicated that over 90% of Pb was removed/recovered from solutions at pH 4.5 and 298 K. A significant negative relationship was detected between the amount of Pb adsorbed and the concentrations of NaCl, indicating that the Pb adsorption onto CuFe2O4 was dominated by the outer-sphere complex. This relationship successfully showed a fast kinetics process during Pb adsorption with the implementation of kinetic models, while the simultaneous monolayer and multilayer mechanisms in Pb adsorption could be well described using isotherm models. Additionally, in simulated seawater adsorption, Pb adsorption was independent of coexisting cations, thereby confirming the Pb removal/recovery potential of CuFe2O4 in the seawater matrix. In desorption experiments, the recovering sequence of desorption reagents was HNO3 ≅ HCl > H2SO4 > H3PO4. This result indicated that Pb desorption efficiency was highly dependent upon reagent concentration, and 0.005 N HNO3 was sufficient for Pb desorption. CuFe2O4 is a good and low-cost solution for simultaneously resolving industrial sludge and remediating aqueous Pb.

Original languageEnglish
Pages (from-to)197-205
Number of pages9
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume71
DOIs
Publication statusPublished - 2017 Feb 1

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering

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