Study of rice-husk ash silica by infrared spectroscopy

Ibrahim, D. M.; El-Hemaly, S. A. S.; Abdel-Kerim, F. M.

doi:10.1016/0040-6031(80)87160-7

Cited by 68 publications

(29 citation statements)

References 3 publications

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“…The bands around 3400 cm -1 and 1600 cm -1 the bands shifted into lower wave number due to -OH from silanol and water molecules bind with surfactant chain. FTIR characterization results are also confirmed by Ibrahim et al [5], Mahamed et al [6], Suyanta and Kuncaka [7], Govindarajan and Jayalakhsmi [8], and Moises et al [9].…”

Section: Infrared Characterizationsupporting

confidence: 74%

Improving the quality of patchouli oil by adsorption process using surfactant modified of natural zeolite

Kuntari¹,

Purbaningtias²,

Wiyantoko³

et al. 2017

AIP Conference Proceedings

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Section: Infrared Characterizationsupporting

confidence: 74%

Improving the quality of patchouli oil by adsorption process using surfactant modified of natural zeolite

Kuntari¹,

Purbaningtias²,

Wiyantoko³

et al. 2017

AIP Conference Proceedings

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“…The quantitative results underline that, as reported by Ibrahim [37], the thermal treatment performed on the rice to obtain the parboiled type favors the nucleation and growth of cristobalite phase which, in general, starts to appear at 900 °C [38]. The presence of tridymite, instead, is governed by the kind and amount of impurities [39].…”

Section: Resultssupporting

confidence: 55%

Technological properties of glass-ceramic tiles obtained using rice husk ash as silica precursor

Andreola¹,

Martı́n²,

Ferrari³

et al. 2013

Ceramics International

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This paper reports the results of a study focused on the obtainment of glass-ceramic by using rice husk ash (RHA) as silica precursor. RHA is a by-product generated in biomass plants using rice husk as fuel for kilns or in the rice mills to generate steam for the parboiling process.Worldwide, it is annually produced about 132 Mt of rice husk, which gives rise to a production of 33 Mt/year of RHA. Glass-ceramic tiles were produced by a sinter-crystallization process using a glassy frit formulated in the MgO-Al 2 O 3 -SiO 2 composition system. The realized glassceramics were studied according to ISO rules for sintering and technological properties (water absorption, apparent density, bending strength, Young's modulus, deep abrasion, Mohs hardness). To complete the investigation crystalline phase formation and microstructural characterization of the glass-ceramic materials was carried out using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Finally, chemical durability tests on parent glass and derived glass-ceramics were performed. The results obtained showed that it is possible to use RHA to produce glass-ceramic tiles by a sinter-crystallization process, obtaining nepheline (Na 2 O*Al 2 O 3 *SiO 2 ) as main crystalline phase and forsterite (2MgO*SiO 2 ) at 900 °C. Regarding technological features, the sintered materials showed bending strength values and Mohs hardness higher with respect to commercial glass-ceramics like NeopariesR. Other properties as water absorption (0.5%) allowed to classify these materials into the Group BIa characteristic of high sintered ceramic tiles according to European Standard rule.

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“…Carbonyl functional groups are known to be pronounced in oxidized carbon materials rather than the original parent carbon material (Budinova et al 2006). In addition, stretching vibration bands of surface and hydrogen bonded -O-H group of alcohols, phenols, and chemisorbed water (Daifullah et al 2003;Ibrahim et al 1980;Yang and Lua 2003;Puziy et al 2003), the peaks pertaining to asymmetric -C-H stretching vibration of aliphatic -CH 3 or -CH 2 groups (Biniak et al 1997;Yu et al 2008;Puziy et al 2003;Rajeshwari et al 2001); peaks due to the in plane bending vibration of -C-H of methylene group (Budinova et al 2006;Rajeshwari et al 2001;Ozgul et al 2007); peaks due to -C-O stretching in alcohols, phenols, ethers, esters, acids, epoxides, lactones, and carboxylic anhydrides (Shin et al 1997;Budinova et al 2006;Rajeshwari et al 2001;Gomez-Serrano et al 1994;Figueiredo et al 1999;El-Hendawy 2003;Park et al 1997;Attia et al 2006;Lapuente et al 1998); the peaks pertaining to the -C=O stretching in carbonyl and carboxyl groups and in lactones (Zawadzki 1989;Nageswara Rao et al 2011;Fanning and Vannice 1993;Painter et al 1985;Zhuang et al 1994); peaks due to the out-of-plane deformation vibrations of -C-H group in aromatic structures (Nageswara 3743.37, 3676.37, 3617.38 3563.84, 3386.65, 3289.23 3843.03, 3745.86, 3679.14, 3614.13, 3562.86, 3334.89, 3227.25 -O-H in alcohols, acids, phenols, and -N-H in amines and amides 2 2932.15, 2876.53, 2822.24, 2786.84 29...…”

Section: Ftir Spectroscopy Of Nvnc Before and After Defluoridationmentioning

confidence: 99%

Removal of fluoride from polluted waters using active carbon derived from barks of Vitex negundo plant

2015

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Background: Deleterious effects of fluoride contamination in ground waters on the health of human beings are well known and intensive research on developing de-fluoridation methods is globally pursued. Of the various methodologies, increasing interest is being envisaged in using the adsorption methods based on active carbons derived from plant material. In the present investigation, Nitric acid activated carbon derived from barks of Vitex negundo plant (NVNC) is probed for its de-fluoridation abilities. Methods: The activated carbon is characterized adopting various physicochemical methods and surface morphological studies are carried out using FT-IR and SEM-EDX techniques. The effect of various parameters such as pH, sorbent dosage, agitation time, initial concentration of fluoride, temperature, particle size and presence of foreign ions on the extraction of the fluoride is studied adopting Batch methods.The adsorption process is analyzed with Freundlich, Langmuir, Temkin and Dubinin-Radushkevich (D-R) isotherms and kinetics of adsorption is studied using pseudo first-order, pseudo second-order, Weber and Morris intraparticle diffusion, Bangham's pore diffusion and Elovich equations. The methodology developed is applied to real ground water samples.

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Study of rice-husk ash silica by infrared spectroscopy

Cited by 68 publications

References 3 publications

Improving the quality of patchouli oil by adsorption process using surfactant modified of natural zeolite

Improving the quality of patchouli oil by adsorption process using surfactant modified of natural zeolite

Technological properties of glass-ceramic tiles obtained using rice husk ash as silica precursor

Removal of fluoride from polluted waters using active carbon derived from barks of Vitex negundo plant

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