TY - JOUR
T1 - Efficient removal/recovery of Pb onto environmentally friendly fabricated copper ferrite nanoparticles
AU - Tu, Yao Jen
AU - You, Chen Feng
AU - Chen, Mei Hsuan
AU - Duan, Yan Ping
N1 - Funding Information:
This research is sponsored by National Natural Science Foundation of China (No. 41571047), Shanghai Natural Science Foundation (No.15ZR1431000), and Shanghai Normal University (SK201614). The work is also supported by MOE and NCKU to CFY and the Shanghai Gaofeng & Gaoyuan Project for University Academic Program Development. The authors thank Prof. Wei-The Jiang, Mr. Po-Shu Lee and Mr. Yi-Liang Wang for their assistance with the XRD and SEM analysis under project MOST103-2119-M006-004.
Publisher Copyright:
© 2016 Taiwan Institute of Chemical Engineers
PY - 2017/2/1
Y1 - 2017/2/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jtice.2016.12.006
DO - 10.1016/j.jtice.2016.12.006
M3 - Article
AN - SCOPUS:85010723240
SN - 1876-1070
VL - 71
SP - 197
EP - 205
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
ER -