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

Nayak, Puja Priyadarshini; Nandi, Sujosh; Datta, Amit

doi:10.1002/eng2.12035

Cited by 28 publications

(12 citation statements)

References 39 publications

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“…In addition, there was a spectrum between 616 and 797 cm −1 in D and E NPs that identified as depicted siloxane. The triple bond in depicted siloxane is an effective factor in the reactivity of SiO 2 NPs 39 . Thus, increasing the calcination temperature increased the crystallinity of SiO 2 NPs, but more investigation was essential to determine the regeneration of formazan in MTT assay and its interference-effect.…”

Section: Resultsmentioning

confidence: 99%

The synergistic interference effect of silica nanoparticles concentration and the wavelength of ELISA on the colorimetric assay of cell toxicity

Abbasi

Hashemi

Samaei

et al. 2021

Sci Rep

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The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay is the most common method for the determination of cell toxicity, but some factors limit the sensitivity of this method, such as pH. Less attention had been paid to the interference effect of optical and plasmonic properties of SiO2 nanoparticles (NPs) in the wavelength range assigned to MTT. This study investigated the synergistic interference effect of SiO2 NPs and wavelength on MTT assay for the first time. The examined variables included the type of SiO2 NPs concentrations (1, 10, and 100 mM) and different wavelengths (470, 490, 520, and 570 nm). The results showed that optical density (OD) increased (p < 0.05) when wavelength and the concentration of crystalline SiO2 NPs increased. So, the maximum OD at 10 and 100 mM were attributed to crystalline SiO2 NPs (p < 0.05) due to the functional group, whereas it was related to amorphous at 1 mM (p > 0.05). According to polynomial regression modeling (PRM), the maximum interference effect was predicted at crystalline SiO2 NPs and wavelength > 550 nm. Besides, the synergistic effects of SiO2 NPs, wavelength, and concentration of NPs had been a good fitting with first-order PRM. Thus, the concentration of SiO2 NPs had a confounder factor in colorimetric for MTT assay. The best artificial neural network (ANN) structure was related to the 3:7:1 network (Rall = 0.936, MSE = 0.0006, MAPE = 0.063). The correlation between the actual and predicted data was 0.88. As SiO2 NPs presence is an interfering factor in MTT assay concerning wavelength, it is suggested wavelength use with minimum confounding effect for MTT assay.

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Section: Resultsmentioning

confidence: 99%

The synergistic interference effect of silica nanoparticles concentration and the wavelength of ELISA on the colorimetric assay of cell toxicity

Abbasi

Hashemi

Samaei

et al. 2021

Sci Rep

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“…High purity nanosilica has unique properties that make it widely used in many applications as high capacity anodes, the conversion of solar energy, biomedical applications, and photovoltaic, electric, electronic devices [1][2][3]. The structure of the available silica in the earth's crust is either amorphous or crystalline.…”

Section: Introductionmentioning

confidence: 99%

“…In the whole world, Rice is considered a basic source of food. Rice husk is generated during the rice milling process as a by-product [3]. The major inorganic component of the rice Husk is silica [4].…”

Section: Introductionmentioning

confidence: 99%

Chemical Extraction Process for Producing High Purity Nanosilica from Iraqi Rice Husk

Ajeel¹,

Sukkar²,

Zedin³

2021

ETJ

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Rice husk is considered a main agricultural waste in Iraq. High purity SiO2 NPs were produced from rice husk by enhanced precipitation and developed leaching processes for the preparation of silica from RH. In this study, pre-treatment for rice husk was with 3N HCl, and calcination at 700°C was achieved, then followed with a leaching process with (1.5, 2, 2.5, 3) N NaOH concentrations. The characterizations of the prepared SiO2 NPs were studied by X-ray fluorescence (XRF), X-ray diffraction (XRD), and atomic force microscopy (AFM). The results show that the prepared SiO2 NPs have an amorphous structure with a high purity of 99.75%. The results of the X-Ray confirm the amorphous nature of the extracted SiO2 NPs. Also, the AFM results indicated that the average diameter of the SiO2 NPs was 85 nm. It was noted that the leaching processes and pretreatment methods determine the structure, particle size, and quality of the synthesized SiO2 NPs.

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“…High purity nanosilica has unique properties that make it widely used in many applications as photovoltaic devices, electronic devices, solar energy conversion, electric devices, high capacity anodes, and biomedical applications [1][2][3]. Silica exists in the crust of the earth as a crystalline structure or amorphous structure.…”

Section: Introductionmentioning

confidence: 99%

“…Silica exists in the crust of the earth as a crystalline structure or amorphous structure. Corn cob is obtained as a by-product from the process of milling for cobs [3]. In corn cobs, silica considers the main inorganic component [4].…”

Section: Introductionmentioning

confidence: 99%

Extraction High Purity Nanosilica Corn Cob by Modified Precipitation Technique

Ajeel

Sukkar

Zedin

2021

Preprint

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Corn cob considers the agricultural waste in Iraq. High purity SiO2NPs were extracted from corn cob by enhanced precipitation and developed leaching processes. In this study, pre-treatment with 3N HCl has achieved then calcination of the corn cob at 700°C, then follows with the leaching process with (2, 2.5, 3)N NaOH. The characterizations of the prepared SiO2NPs were analyzed with atomic force microscopy (AFM), and X-ray fluorescence (XRF). The results were found that the prepared SiO2NPs have an amorphous structure with a high purity of 97.13 %. Also, the AFM results indicated that the average diameter of the SiO2NPs was 85 nm. It was noted that the leaching processes and pretreatment methods determine the structure, particle size, and quality of the synthesized SiO2NPs.

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

Cited by 28 publications

References 39 publications

The synergistic interference effect of silica nanoparticles concentration and the wavelength of ELISA on the colorimetric assay of cell toxicity

The synergistic interference effect of silica nanoparticles concentration and the wavelength of ELISA on the colorimetric assay of cell toxicity

Chemical Extraction Process for Producing High Purity Nanosilica from Iraqi Rice Husk

Extraction High Purity Nanosilica Corn Cob by Modified Precipitation Technique

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