Mesoporous Composite Materials from Acivated Rice Husk Carbon and Montmorillonite

Jandosov, J.; Mansurov, Z. A.; Biisenbayev, M.A.; Kerimkulova, A. R.; Ismagilov, Z. R.; Shikina, N. V.; Исмагилов, И.З.; Andrievskaya, I.P.

doi:10.18321/ectj74

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…AC samples were obtained from rice husk collected in the Bakanas Village, Balkhash District of Almaty Region via a procedure described elsewhere [38,39]. Briefly, the RH material was initially washed and air dried at 105°C for 24 h in an oven and then pyrolyzed in air at 475 °C, in a spherical rotary steel reactor (SI, Fig.…”

Section: Preparation Of Activated Carbonsmentioning

confidence: 99%

Investigation of rice husk derived activated carbon for removal of nitrate contamination from water

Satayeva

Howell

Korobeinyk

et al. 2018

Science of The Total Environment

104

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Development of porous carbons with high specific surface area (>1200mg) targeted at nitrate removal from aqueous solutions is investigated by chemical activation of carbonized rice husk. Potassium carbonate is used as activating and desilicating agent. The effect of post-synthetic treatment by gas phase ammoxidation with ozone/ammonia or oxidation with concentrated nitric acid followed by nitrification with urea on main physicochemical properties and on the effectiveness of the activated carbons in nitrate removal is compared with those determined for a pristine activated carbonized rice husk sample. The two-fold enhancement of nitrate removal by the urea-modified activated carbon in comparison with pristine and ammoxidated sample is in direct correlation with the development of surface basic groups.

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Section: Preparation Of Activated Carbonsmentioning

confidence: 99%

Investigation of rice husk derived activated carbon for removal of nitrate contamination from water

Satayeva

Howell

Korobeinyk

et al. 2018

Science of The Total Environment

104

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“…In addition, in this work, these parameters are confirmed experimentally and demonstrate the wide applicability of AC as electrode material for energy storage systems. Composites are based on activated carbon obtained from biological waste such as rice husks [10] and walnut shells [11] etc.…”

Section: Nio/с Composites For Energy Storage Systemsmentioning

confidence: 99%

Carbon/NiO Compositional Fibers

Мансуров

Смагулова

Imash³

et al. 2022

Eurasian Chem. Tech. J.

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This article presents the results of the synthesis of carbon-NiO composite fibers. Fibers doped with NiO particles are of practical interest for applications in sensors, energy storage systems, photocatalysts, etc. Four-component initial fibers based on polyacrylonitrile (PAN), activated carbon (AC), coal tar pitch (CTP), and NiO particles were obtained. CTP was obtained by thermal treatment of coal tar, AC by carbonization of apricot kernels, NiO by solution combustion synthesis. PAN, CTP, and AC are a source of carbon, but each of them plays a specific role. PAN is the basis of carbon fibers and a fiber-forming material, CTP is a technogenic waste added to replace polymer particles, AC is an additive that could increase the carbon content and the porosity of the final fibers. The fibers were obtained using the electrospinning method, which makes it possible to use complex suspensions and obtain fibers of various diameters. PAN:CTP:AC:NiO fibers were obtained. Next, the processes of stabilization and carbonization of the fibers were carried out. The fibers at each stage were examined by scanning electron microscopy and EDAX. The result of the synthesis was carbon/NiO fibers with a diameter of 100‒300 nm. The resulting fibers are promising for practical applications due to the one-dimensional structure of the fibers and better adhesion between the fiber and NiO particles.

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“…Converting RH into activated carbon not only could create a substantial added value to the product with its potential use in adsorption and catalysis [ 21 , 22 ], but also reduce the inherent problems associated with current methods of this renewable biomass waste management, offering a “green technology” approach.…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon/Pectin Composite Enterosorbent for Human Protection from Intoxication with Xenobiotics Pb(II) and Sodium Diclofenac

et al. 2022

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The use of enterosorbents—materials which can be administered orally and eliminate toxic substances from the gastrointestinal tract (GIT) by sorption—offers an attractive complementary protection of humans against acute and chronic poisoning. In this study, we report the results of developing a microgranulated binary biomedical preparation for oral use. It was designed with a core-shell structure based on pectin with low degree of esterification as the core, and nanoporous activated carbon produced from rice husk, AC-RH, as the shell, designated as AC-RH@pectin. The adsorption properties of the synthesized materials were studied in aqueous solutions for the removal of lead (II) nitrate as a representative of toxic polyvalent metals and sodium diclofenac as an example of a medicinal drug. The composite enterosorbent demonstrated high adsorption capacity for both adsorbates studied. Adsorption kinetics of lead and diclofenac adsorption by AC-RH, pectin, and AC-RH@pectin, fitted well a pseudo-second-order model. According to the Langmuir adsorption isotherm model, the best fitted isotherm model, the maximum adsorption capacity, qmax, of AC-RH@pectin for diclofenac and for lead (II) was 130.9 mg/g and 227.8 mg/g, respectively. Although qmax of AC-RH for diclofenac, 537.6 mg/g, and qmax of pectin for lead (II), 245.7 mg/g, were higher, the maximum adsorption capacity of AC-RH for lead (II), 52.7 mg/g, was much lower than that of the composite AC-RH@pectin and the adsorption capacity of pectin for diclofenac was negligible. Therefore, the composite material AC-RH@pectin demonstrated substantial efficiency of removing both species which potentially defines it as a more universal enterosorbent suitable for treating poisoning caused by substances of different chemical nature.

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Mesoporous Composite Materials from Acivated Rice Husk Carbon and Montmorillonite

Cited by 5 publications

References 6 publications

Investigation of rice husk derived activated carbon for removal of nitrate contamination from water

Investigation of rice husk derived activated carbon for removal of nitrate contamination from water

Carbon/NiO Compositional Fibers

Activated Carbon/Pectin Composite Enterosorbent for Human Protection from Intoxication with Xenobiotics Pb(II) and Sodium Diclofenac

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