Extraction of nanostructured sodium nitrate from industrial effluent and their thermal properties
© 2020 Water Environment Federation.
| Veröffentlicht in: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 92(2020), 8 vom: 10. Aug., Seite 1123-1130 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2020
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| Zugriff auf das übergeordnete Werk: | Water environment research : a research publication of the Water Environment Federation |
| Schlagworte: | Journal Article industrial waste physical and chemical treatment remediation reuse Industrial Waste Nitrates Acetone 1364PS73AF sodium nitrate |
| Zusammenfassung: | © 2020 Water Environment Federation. This study describes a process of extraction of high purity sodium nitrate from corrosive chemical industry effluents. Here, we have designed a process to convert highly corrosive effluents of ceramic industries having pH ~13.1 into sodium nitrate nanoparticles. The extraction of sodium nitrate has been carried out via neutralization of industrial effluent by nitric acid. We have also studied the effect of low boiling point co-solvent during recrystallization of sodium nitrate. TEM studies of sodium nitrate extracted from the filtrate in the absence of co-solvent show the formation of nanoparticle of ~70 nm. Further, a drastic decrease in particle size to 10 nm has been observed when co-solvents (methanol, ethanol, and acetone) were used in combination with filtrate during the recrystallization process of sodium nitrate. Thermal properties of sodium nitrate extracted from filtrate have been investigated. Our result indicates that the nanoparticles extracted from filtrate having very high heat storage density (453 J/g) without hampering the melting point and boiling point of the materials. PRACTITIONER POINTS: The new chemical process has been developed to treat the industrial effluent Extraction of nanostructured sodium nitrate has been carried from industrial effluent The particle size of sodium nitrate drastically influenced by the used co-solvent for recrystallization The highest heat storage density is 453 J/g, which was obtained from the recrystallization of the filtrate |
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| Beschreibung: | Date Completed 27.07.2020 Date Revised 27.07.2020 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1554-7531 |
| DOI: | 10.1002/wer.1307 |