Research on Lead (II) Adsorption Mechanism from Aqueous Solution by Calcium Carbonate Modified Diatomite Absorbent
| Autor: | Qing Lin Xie, Nan Chun Chen, Lili Ma, Hui Xu, Hai Miao Zhou, Qing Feng Yu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
Materials science Mechanical Engineering technology industry and agriculture 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences chemistry.chemical_compound Adsorption Calcium carbonate Chemical engineering chemistry Mechanics of Materials General Materials Science 0210 nano-technology Mechanism (sociology) 0105 earth and related environmental sciences |
| Zdroj: | Materials Science Forum. 921:21-28 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.921.21 |
| Popis: | In this study, calcium carbonate was used to coat and link the surface of diatomite for the formation of a novel modified adsorbent (referred to as Ca–diatomite). Various analytical techniques were used to characterize structure and mechanisms of modification and adsorption process, like Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD). Results showed that that Calcium carbonate had been successful grafted onto the surface of diatomite after modification, and Calcium carbonate modification improved the adsorption performance of diatomite for the removal of lead (II) ions from aqueous solution. Ca–diatomite adsorption isotherms and adsorption kinetics were also been studied. The adsorption isotherms and the kinetic data were best fitted with the Langmuir model and pseudo-second-order kinetics, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|