Foroutan, R and Mohammadi, R and Peighambardoust, S.J and Jalali, S and Ramavandi, B (2020) Application of nano-silica particles generated from offshore white sandstone for cadmium ions elimination from aqueous media. Environmental Technology and Innovation, 19 (101031). ISSN 23521864
Full text not available from this repository.Abstract
The overall goal of this investigation was to produce nano-silica particles from white sandstone and control Cd(II) pollution from various aqueous matrixes. The generated nanoparticles have spherical morphology with a surface area of 298.71 m2/g and a size of 30–40 nm. Based on the ANOVA findings, pH, temperature, nano-adsorbent quantity, initial cadmium concentration, and contact time parameters were effective (p-value < 0.05) in the Cd(II) adsorption process. The experimental results had a good agreement with the Freundlich model. According to response surface methodology data, the maximum efficiency (98.74%) of cadmium elimination by nano-silica obtained at a temperature of 25 °C, Cd(II) content of 5 mg/L, contact time of 10 min, nano-silica dose of 0.67 g/L, and pH of 6.14. The maximum Cd(II) attraction onto white sandstone and nano-silica was 42.97 mg/g and 55.13 mg/g, respectively. The exothermic and spontaneous behavior was observed for the adsorption of Cd(II) onto nano-silica particles. The silica nanoparticles had a good ability to adsorb–desorb cadmium ions up to 8 steps. The pseudo-second-order was suitably modeled kinetic data. Nano-silica particle was applied for controlling Cd ions from shipbuilding industry wastewaters.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Adsorption–desorptionCadmium ionNano-silicaResponse surface methodologyWhite sandstone |
| Subjects: | WA Public Health |
| Divisions: | Faculty of Public Health |
| Depositing User: | خدیجه شبانکاره |
| Date Deposited: | 20 Dec 2020 09:00 |
| Last Modified: | 20 Dec 2020 09:00 |
| URI: | http://eprints.bpums.ac.ir/id/eprint/9024 |
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