Adsorption of Lead(II) Ions onto Magnetite Nanoparticles
Magnetite nanoparticles were applied for the removal of lead(II) ions from aqueous solution as a function of pH, contact time, supporting electrolyte concentration and initial analytical Pb(II) ion concentration. The highly crystalline nature of the magnetite structure with pore diameters of ca. 10...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2010-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.28.5.407 |
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| author | Xue Song Wang Hai Jie Lu Lei Zhu Fei Liu Jun Jun Ren |
| author_facet | Xue Song Wang Hai Jie Lu Lei Zhu Fei Liu Jun Jun Ren |
| author_sort | Xue Song Wang |
| collection | DOAJ |
| description | Magnetite nanoparticles were applied for the removal of lead(II) ions from aqueous solution as a function of pH, contact time, supporting electrolyte concentration and initial analytical Pb(II) ion concentration. The highly crystalline nature of the magnetite structure with pore diameters of ca. 10 nm was characterized by transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The surface area was determined as 115.3 m 2 /g. The surface chemical properties of magnetite in aqueous solution at 25 °C were investigated. Batch experiments were carried out to determine the adsorption kinetics and adsorption mechanism of Pb(II) ions by the magnetite nanoparticles. The adsorption of Pb(II) ions was mainly governed by surface complexation, with the adsorption process being pH-dependent. In NaCl solutions, Pb(II) ion adsorption increased with increasing ionic strength; however, in NaClO 4 solutions, Pb(II) ion adsorption exhibited little dependence on the ionic strength of the solution. Kinetic studies were performed to understand the mechanistic steps involved in the adsorption process. The adsorption kinetic data for Pb(II) ions were best fitted by the fractional power equation. The Langmuir and Freundlich adsorption isotherms were applicable to the equilibrium adsorption process and the corresponding constants were evaluated. The maximum adsorption capacity (q m ) calculated from the Langmuir isotherm was found to be 0.1105 mmol/g for Pb(II) ions at a pH value of 5.0 and at 25 °C. |
| format | Article |
| id | doaj-art-a715e5b389a34dc99d8609732673fdd9 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2010-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-a715e5b389a34dc99d8609732673fdd92025-02-03T10:07:34ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382010-06-012810.1260/0263-6174.28.5.407Adsorption of Lead(II) Ions onto Magnetite NanoparticlesXue Song WangHai Jie LuLei ZhuFei LiuJun Jun RenMagnetite nanoparticles were applied for the removal of lead(II) ions from aqueous solution as a function of pH, contact time, supporting electrolyte concentration and initial analytical Pb(II) ion concentration. The highly crystalline nature of the magnetite structure with pore diameters of ca. 10 nm was characterized by transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The surface area was determined as 115.3 m 2 /g. The surface chemical properties of magnetite in aqueous solution at 25 °C were investigated. Batch experiments were carried out to determine the adsorption kinetics and adsorption mechanism of Pb(II) ions by the magnetite nanoparticles. The adsorption of Pb(II) ions was mainly governed by surface complexation, with the adsorption process being pH-dependent. In NaCl solutions, Pb(II) ion adsorption increased with increasing ionic strength; however, in NaClO 4 solutions, Pb(II) ion adsorption exhibited little dependence on the ionic strength of the solution. Kinetic studies were performed to understand the mechanistic steps involved in the adsorption process. The adsorption kinetic data for Pb(II) ions were best fitted by the fractional power equation. The Langmuir and Freundlich adsorption isotherms were applicable to the equilibrium adsorption process and the corresponding constants were evaluated. The maximum adsorption capacity (q m ) calculated from the Langmuir isotherm was found to be 0.1105 mmol/g for Pb(II) ions at a pH value of 5.0 and at 25 °C.https://doi.org/10.1260/0263-6174.28.5.407 |
| spellingShingle | Xue Song Wang Hai Jie Lu Lei Zhu Fei Liu Jun Jun Ren Adsorption of Lead(II) Ions onto Magnetite Nanoparticles Adsorption Science & Technology |
| title | Adsorption of Lead(II) Ions onto Magnetite Nanoparticles |
| title_full | Adsorption of Lead(II) Ions onto Magnetite Nanoparticles |
| title_fullStr | Adsorption of Lead(II) Ions onto Magnetite Nanoparticles |
| title_full_unstemmed | Adsorption of Lead(II) Ions onto Magnetite Nanoparticles |
| title_short | Adsorption of Lead(II) Ions onto Magnetite Nanoparticles |
| title_sort | adsorption of lead ii ions onto magnetite nanoparticles |
| url | https://doi.org/10.1260/0263-6174.28.5.407 |
| work_keys_str_mv | AT xuesongwang adsorptionofleadiiionsontomagnetitenanoparticles AT haijielu adsorptionofleadiiionsontomagnetitenanoparticles AT leizhu adsorptionofleadiiionsontomagnetitenanoparticles AT feiliu adsorptionofleadiiionsontomagnetitenanoparticles AT junjunren adsorptionofleadiiionsontomagnetitenanoparticles |