katterine Patricia Taipe Huamani

Dr. katterine Patricia Taipe Huamani


Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 August 2020 in Nanomaterials
Verified
Journal Article
Open access
PDF file
Juan Adrian Ramos GuivarJuan Adrian Ramos Guivar
Juan Adrian Ramos Guivar
KHkatterine Patricia Taipe Huamani
katterine Patricia Taipe Huamani
MSMiguel Angelo Schettino
Miguel Angelo Schettino
ESEloi Silva
Eloi Silva
MTMarco Antonio Morales Torres
Marco Antonio Morales Torres
FLFred Jochen Litterst
Fred Jochen Litterst
Novel magnetic zeolite type 5A nanocomposites were synthesized by the co-precipitation method and applied to lead removal from aqueous ambient. Maghemite nanoparticles were mixed with zeolite and, by controlling its content, transmission electron microscopy results gave sizes of 5 to 15 nm and selected area electron diffraction patterns confirmed the presence of zeolite. The nanocomposites have high specific surface area with values up to 194 m2/g. Magnetization measurements proved superparamagnetic behavior with saturation values of ~35 emu/gFe. Kinetic adsorption experiments showed removal efficiencies of 99.9% and an enhanced equilibrium time of 5 min. The lead concentrations after adsorption experiments lay under the permissible levels of 10 μg L−1, according to the World Health Organization. The maximum adsorption capacity, estimated by Sips model, was 265 mg L−1 at 300 K. The removal efficiency was significantly improved in the range of pH > 6, as well as in the presence of cation interferents such as Ca(II), Cu(II), and Cd(II). The adsorption mechanism was explained with cation exchange between Pb(II), the zeolite framework, and the protonated maghemite surface. Besides, our system revealed recyclability even after seven regeneration cycles. Thus, our synthesized materials have remarkable adsorption properties for lead water remediation processes.