Fourier Transform Infrared Spectroscopic Characterization of Kaolinite from Assam and Meghalaya, Northeastern India

Saikia, Basanta; Parthasarathy, G.

doi:10.4236/jmp.2010.14031

Cited by 552 publications

(257 citation statements)

References 7 publications

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“…7. The wavenumber in range of 557.0−748.3 cm -1 indicates Al−O bond [29]. This FTIR spectra of composite before desorption investigated at 592.1 cm -1 , whereas after desorption appears at 590.2 cm -1 .…”

Section: Kinetic Of Desorptionmentioning

confidence: 99%

Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

et al. 2018

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The alumina-activated carbon has the ability to adsorb and desorb the procion red MX-5B. The research evaluated the influence of desorption agent, contact time, and temperature on desorption process of procion red MX-5B dye with alumina-activated carbon composite and the adsorption capacity of the composite after desorption process. The desorption agents used in desorption process were solution with pH 2−10, H2O2 30 % (v/v), methanol 70% (v/v) and ethanol 70% (v/v) 2-10, H2O2 30% (v/v), metanol 70% (v/v) dan etanol 70% (v/v) desorpsi, adsorpsi ABSTRAK Komposit alumina-karbon aktif mempunyai kemampuan mengadsorpsi dan mendesorpsi zat warna procion merah MX-5B. Penelitian ini mempelajari pengaruh reagen pendesorpsi, waktu kontak, dan suhu pada proses desorpsi zat warna procion merah MX-5B dari komposit alumina-karbon aktif dan kemampuan adsorpsi komposit alumina-karbon aktif setelah proses desorpsi. Reagen pendesorpsi yang digunakan pada proses desorpsi meliputi larutan dengan pH pada interval

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Section: Kinetic Of Desorptionmentioning

confidence: 99%

Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

et al. 2018

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“…[66] Ultraviolet light of wavelength 254 (UV 254 ) is widely applied to identify aromatic organics. Si-O-Si, Si-O-Fe stretching [50,53,54] …”

Section: Mwd Analysismentioning

confidence: 99%

“…The observed bands (400-4000 cm À1 ) listed in Table 3 were assigned based on the published literature. [50][51][52][53][54] The spectra were different from urban dust spectra where the peaks usually appear at ,2980 and 2862 cm À1 for alkyl compounds. [55] The peaks for the Sydney dust that appeared at 3698, 3652 and 3627 cm À1 show the hydroxy stretching vibration of alumina.…”

Section: Organic Analysis Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

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Unusual Sydney dust storm and its mineralogical and organic characteristics

et al. 2012

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Environmental context. In 2009, at the end of the longest drought period ever recorded in Australia, a major dust storm blanketed the cities of Sydney and Brisbane for more than 24 h. The source of the dust was inner New South Wales and South Australia, where large scale open-cut mining occurs together with agricultural practices. We report results of extensive mineralogical and chemical analyses of the dust, and discuss their significance in terms of the dust origins and potential human health risks.Abstract. In a 24-h period from 23 to 24 September 2009, a dust storm passed over Sydney, Australia that produced a red sky and reduced the visibility to a few metres. It was Sydney's worst dust storm since 1942. During this period, the PM 10 (particles measuring 10 mm or less) value jumped from 50 to 11 800 mg m À3 . The dust storm was sampled and its mineralogical and organic contents were analysed. Four major particle sizes (0.6, 4.5, 9.3 and 20 mm) were observed in the dust. A multimodal particle distribution indicated a long range of dust transport. Mineralogical analysis showed that the particles were mainly composed of crustal elemental oxides of Al and Si. The ratio of Al/Si was 0.39 and the organic content was 10.6 %, which was found to be enriched with humic-type substances. The high Al/Si ratio (.0.3) indicated that the dust originated from desert land whereas the high organic content indicated that the particles were also derived from eroded agricultural land. A fluorescence spectroscopic study on the organic matter at excitation and emission wavelengths of 245-265 and 330-350 nm indicated that biohazardous substances were unlikely to be present in the dust.

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“…The INNAT sample presented three characteristic bands of kaolinite at 3695, 3652 and 3620 cm -1 , suggesting Al-OH stretching mode. However, for M2CA sample, these bands underwent a significant absorption reduction due to the dihydroxylation, as evidenced by the bands at 3651 and 3476 cm -1 (15,16,17 (17,18,19). Such results are in accordance with EDX and XRD data in Table 1 and Fig.…”

mentioning

confidence: 99%

Production and Characterization of Porous Kaolinite Modified Pellets for Slow Release Pheromone.

Matos¹,

Aquino²,

Gaona³

et al. 2017

IJAR

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Natural and modified kaolinite minerals are widely used in industrial applications and environmental protection, in particular, sorbent processes. The aim of this work consists in proposing an alternative application for the kaolinite as a slow release device of pheromone benzaldehyde. Porous kaolinite pellets were produced by uniaxial compression molding under a pressure of 145 MPa, approximately. The pellets were sintered at 900 o C and characterized by X-ray diffraction (XRD), Energy Dispersive X-ray fluorescence spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR). Afterwards, these pellets were impregnated with benzaldehyde, a synthetic pheromone used to attract kissing bugs. The pellets were analyzed by FTIR, after the impregnation process, in order to verify the presence of the sorbed benzaldehyde. In addition, bioassays were performed in laboratory scale, on T. infestans nymphs and adults for evaluating the maximum release period and the attractant efficiency of pellets using impregnated pellets and control ones. The results of the release of benzaldehyde analysis showed existence of benzaldehyde after sixty days and the results of bioassays release showed more effectiveness in attraction of adult insects than nymph instars, suggesting that the porous kaolinite pellets are a promising alternative in trap system applications in the vector control to T. infestans, using benzaldehyde.

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Fourier Transform Infrared Spectroscopic Characterization of Kaolinite from Assam and Meghalaya, Northeastern India

Cited by 552 publications

References 7 publications

Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

Desorption and Re-Adsorption of Procion Red MX-5B Dye on Alumina-Activated Carbon Composite

Unusual Sydney dust storm and its mineralogical and organic characteristics

Production and Characterization of Porous Kaolinite Modified Pellets for Slow Release Pheromone.

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