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- W2378624992 abstract "An adsorbent with Fe 3 O 4 as magnetic core and MnO 2 as shell was prepared by co-precipitation process.The adsorbent was characterized using multiple techniques and its performance for Pb(II) removal from aqueous solution was investigated.The TEM image indicated that the shape of nanosized Fe 3 O 4 / MnO 2 particles was irregular.X-ray powder diffraction(XRD) analysis showed that the magnetic phase in Fe 3 O 4 / MnO 2 was spinel magnetite.The adsorbent has a highly specific saturation magnetization of 54.7 A·m2·kg-1and a specific surface area of 76.5 m2·g-1.The results of batch sorption experiments suggested that the Fe 3 O 4 / MnO 2 magnetic adsorbent was effective for Pb(II) removal from water,particularly at low equilibrium concentration.The isotherm data was well fitted by Langmuir model(R2= 0.852) with a maximal Pb adsorption capacity of 142.0 mg·g-1at pH 5.0.The adsorption of Pb(II) was very fast and over 80% of the equilibrium sorption capacity was achieved within 30 min.The pseudo-second order model(R2= 0.959) was more suitable to describe adsorption kinetic data.The Pb(II) adsorption increased with increasing values of solution pH and was not significantly affected by the change of ionic strength." @default.
- W2378624992 created "2016-06-24" @default.
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- W2378624992 date "2013-01-01" @default.
- W2378624992 modified "2023-09-24" @default.
- W2378624992 title "Preparation and evaluation of shell-core structured Fe_3 O_4 /MnO_2 magnetic adsorbent for Pb(II) removal from aqueous solutions" @default.
- W2378624992 hasPublicationYear "2013" @default.
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