Nitrate Removal from Waste-Water Using Silica Nanoparticles
Autor: | Tan Tai Nguyen, Phuong Kim To, Lam Nguyen Hoang, Hoa Thai Ma |
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Rok vydání: | 2020 |
Předmět: |
Aqueous solution
Article Subject Chemistry Inorganic chemistry 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Husk Ion Silica nanoparticles Absorbance chemistry.chemical_compound Adsorption Wastewater Nitrate 0210 nano-technology QD1-999 0105 earth and related environmental sciences |
Zdroj: | Journal of Chemistry, Vol 2020 (2020) |
ISSN: | 2090-9071 2090-9063 |
DOI: | 10.1155/2020/8861423 |
Popis: | This work presented the removal of nitrate ions in aqueous solution based on silica nanoparticles (SiNPs), which were extracted from rice husk ash. The optimal conditions for nitrate ion adsorption were studied including pH, contact time, adsorbate concentration, and amount of absorbance. The surface morphological analysis showed that the SiNPs extracted (purity of 98%) were around 50 nm with a surface area of 30 m2·g−1 and adsorption average pore width of 2.72 nm, offers possibility for high capability of nitrate ion removal. The experimental results showed that the nitrate ion capability of adsorption was obtained around 14.22 mg·g−1 with a concentration range from 0 to 25 mg·L−1 based on optimizing conditions including pH 6, contact time of 50 minutes, and SiNP dosage of 0.15 g vol−1. In addition, nitrate ion removal based on SiNPs will provide considerate benefits such as the reducing costly sample pretreatment steps, less time-consuming, and reliable methods for processing nitrate-polluted water. |
Databáze: | OpenAIRE |
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