Comparative assessment of chemical treatments on extraction potential of commercial grade silica from rice husk

Autor:	Puja Priyadarshini Nayak, Sujosh Nandi, Ashish Kumar Datta
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	alkali treatment characterization rice husk ash silica extraction silica nanoparticles Engineering (General). Civil engineering (General) TA1-2040 Electronic computers. Computer science QA75.5-76.95
Zdroj:	Engineering Reports, Vol 1, Iss 2, Pp n/a-n/a (2019)
Druh dokumentu:	article
ISSN:	2577-8196
DOI:	10.1002/eng2.12035
Popis:	In the present study, an attempt has been made to extract commercial grade amorphous silica nanoparticles from rice husk (RH) using four different chemicals (NaOH, KOH, Na2CO3, and K2CO3) and two washing solvents (water and ethanol). The elemental, structural, and morphological characterizations of the silica samples were carried out using scanning electron microscopy coupled with energy‐dispersive X‐ray spectroscopy (SEM‐EDS), atomic absorption spectrometry (AAS), X‐ray diffraction (XRD), and Fourier‐transform infrared spectroscopy (FTIR). The combined NaOH and water treatment was found to be the most efficient method in terms of recovery of silica sample, while combined Na2CO3 and water treatment was more suitable for obtaining pure silica. No significant difference in the percentage recovery of silica was observed between the two washing treatments at p
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/92acbf1f415745dc8a5df1634df33ed6 Zobrazit plný text záznamu Plný text View record in DOAJ