Physical, chemical and electric characterization of thermally treated rice husk ash and its potential application as ceramic raw material

2017 ◽  
Vol 28 (4) ◽  
pp. 1228-1236 ◽  
Author(s):  
Iara J. Fernandes ◽  
Felipe A.L. Sánchez ◽  
José R. Jurado ◽  
Amanda G. Kieling ◽  
Tatiana L.A.C. Rocha ◽  
...  
Keyword(s):  
Rice Husk ◽  
Potential Application ◽  
Rice Husk Ash ◽  
Raw Material ◽  
Physical Chemical ◽  
Thermally Treated

Rice Husk Ash as a Raw Material to Produce Willemite Pigments

2018 ◽  
Vol 912 ◽  
pp. 44-49
Author(s):  
L.A. Vieira ◽  
Marilena Valadares Folgueras ◽  
M. Tomiyama ◽  
S.R. Prim
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Synthesis Temperature ◽  
Raw Material ◽  
Ceramic Pigments ◽  
X Ray Diffraction ◽  
X Ray ◽  
Color Development ◽  
Ceramic Process

This study focuses in the synthesis of ceramic pigments based on the crystal structure of willemite (Zn2SiO4). The willemite obtained from the combination of commercial zinc oxide and rice husk ash is produced in a conventional ceramic process without the use of mineralizer agent and with the addition of cobalt oxide or nickel oxide as the source of chromophore ions. The synthesis temperature used was 1200°C. The characterization of pigments involves the use of X-ray diffraction and scanning electron microscopy. The pigments applied in matte enamel and sintered at 1100°C or 1200°C developed color between blue and beige. The construction of absorbance curves showed the color development behavior of each pigment. The results showed the possibility of obtaining willemite, from rice husk ash and the color development efficiency of the material, besides showing the interference of chromophore ion (Ni and Co) in color development.

Synthesis and characterization of red mud and rice husk ash-based geopolymer composites

2013 ◽  
Vol 37 ◽  
pp. 108-118 ◽  
Author(s):  
Jian He ◽  
Yuxin Jie ◽  
Jianhong Zhang ◽  
Yuzhen Yu ◽  
Guoping Zhang
Keyword(s):  
Rice Husk ◽  
Red Mud ◽  
Rice Husk Ash ◽  
Synthesis And Characterization ◽  
Geopolymer Composites

A Study on a Green Route to Preparation of Silica Powders with Rice Husk Ash

2014 ◽  
Vol 1010-1012 ◽  
pp. 1015-1019
Author(s):  
Ze Xin Yang ◽  
Lin Dong ◽  
Meng Wang ◽  
Huan Li
Keyword(s):  
Sodium Bicarbonate ◽  
Sodium Silicate ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Sodium Hydroxide Solution ◽  
Sodium Silicate Solution ◽  
Silicate Solution ◽  
Raw Material ◽  
Transmission Electron ◽  
Thermal Analyzer

The main purpose of this article is to develop an environmentally friendly and economically effective process to produce silica from rice husk ash. Sodium silicate solution was prepared by the reaction of rice husk ash and sodium hydroxide solution, and then the sodium silicate solution was used as the raw material for the preparation of silica with sodium bicarbonate. During the reaction, the by-product can be passed into CO2 to prepare sodium bicarbonate what can be reutilized. Experimental route achieved resource recycling and environment-friendly, low energy consumption, zero emissions and so on. Meanwhile the microstructures of the silica powders were characterized by Transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and Thermo gravimetric/Differential thermal analyzer (TG-DTA).The purity of silicon was up to 99.43% and the particle size was 200-300nm.

scholarly journals Optimization of nanostructured/nano sized rice husk ash preparation

2020 ◽  
Vol 17 (3(Suppl.)) ◽  
pp. 0953
Author(s):  
Medhat Mostafa ◽  
Hamdy Salah ◽  
Amro B. Saddek ◽  
Nabila Shehata
Keyword(s):  
Particle Size ◽  
Rice Husk ◽  
Amorphous Silica ◽  
Particle Shape ◽  
Rice Husk Ash ◽  
Loss On Ignition ◽  
Shape Distribution ◽  
Disk Mill ◽  
Grinding Time

The objective of the study is developing a procedure for production and characterization of rice husk ash (RHA). The effects of rice husk (RH) amount, burning/cooling conditions combined with stirring on producing of RHA with amorphous silica, highest SiO2, lowest loss on ignition (LOI), uniform particle shape distribution and nano structured size have been studied. It is concluded that the best amount is 20 g RH in 125 ml evaporating dish Porcelain with burning for 2 h at temperature 700 °C combined with cooling three times during burning to produce RHA with amorphous silica, SiO2 90.78% and LOI 1.73%. On the other hand, cooling and stirring times affect the variation of nano structured size and particle shape distribution. However, no crystalline phases were found in RHA in all cases. Results proved that the Attritor ball mill was more suitable than vibration disk mill for pulverizing nano structured RHA with 50% of particle size (D50) lower than 45 mm and 99 % of particle size (D99) lower than 144 mm to nanosized RHA with D50 lower than 36 nm and D99 lower than 57 nm by grinding time 8.16 min to every 1 g RHA without changes in morphousity of silica.

Elemental Characterization of Rice Husk Ash from Local Rice Species in South Eastern Nigeria

2020 ◽  
Vol 3 (4) ◽  
pp. 1081-1085
Author(s):  
Paul S. Ogbuefi ◽  
Placid Nwaokafor ◽  
Ifeanyi J. Njoku ◽  
Ogechukwu J. Uzuegbunam
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
South Eastern ◽  
Elemental Characterization

scholarly journals Preparation and characterization of rice husk ash (RHA)-TiO2 / ZnO composites and its application in treating effluents from textile industries

2013 ◽  
Vol 47 (4) ◽  
pp. 445-448 ◽  
Author(s):  
MH Kabir ◽  
MF Kabir ◽  
F Nigar ◽  
S Ahmed ◽  
AI Mustafa ◽  
...  
Keyword(s):  
Composite Materials ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Textile Dye ◽  
X Ray ◽  
Textile Dye Effluent ◽  
Degradation Reaction ◽  
D Values ◽  
Sun Light

Photocatalytic composite materials incorporating the photocatalysts (TiO2, ZnO) with rice husk ash (RHA) have been developed to investigate the photodegradation of real textile dye effluent. The structural characterization of the composite materials was performed using XRD (X-Ray Diffractometer). The characteristic XRD peaks together with the 2? values for both TiO2 and ZnO were in excellent agreement with the standard JCPDS d-values. The efficacy of these composites was examined through the degradation of a textile dye, collected from a local dye house. The sun light was used as the source of illumination for the preceding degradation reaction. Bangladesh J. Sci. Ind. Res. 47(4), 445-448, 2012 DOI: http://dx.doi.org/10.3329/bjsir.v47i4.14075

scholarly journals CO2 and water vapor adsorption properties of framework hybrid W-ZSM-5/silicalite-1 prepared from RHA

RSC Advances ◽  
2020 ◽  
Vol 10 (41) ◽  
pp. 24642-24652
Author(s):  
Yisong Wang ◽  
He Jia ◽  
Xin Fang ◽  
Ziyang Qiu ◽  
Tao Du
Keyword(s):  
Water Vapor ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Water Vapor Adsorption ◽  
Adsorption Properties ◽  
Raw Material ◽  
Vapor Adsorption ◽  
Hydrothermal Methods

Framework hybrid W-ZSM-5 and W-silicalite-1 zeolites were synthesized by hydrothermal methods using rice husk ash (RHA) as a silicon raw material.

scholarly journals Improvement of Collapsible Soil Behavior of a Lateritic Soil Using Rice Husk Ash

2015 ◽  
Vol 668 ◽  
pp. 290-296 ◽  
Author(s):  
Luiza P. Fagundes ◽  
Jhaber D. Yacoub ◽  
Andrey C. Lima ◽  
Flávia R. Nakatsuchi ◽  
José A. Lollo ◽  
...  
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Combined Effect ◽  
Building Construction ◽  
Lateritic Soil ◽  
Soil Behavior ◽  
Collapsible Soil ◽  
Lateritic Soils ◽  
Environmental Friendly

Great areas of Brazil present lateritic soils, such as the northeast and the south. Some of these soils have, as main characteristic, instable structures that can present considerable volumetric deformation in the presence of water. This behavior, also named collapse, is responsible for several problems on the building construction such as cracks and fractures that can damage the safety of structures. The aim of this paper is to assess the possibility of improvement of collapsible behavior of a lateritic soil using rice husk ash (RHA). A previous characterization of soil and RHA was performed in order to assess the combined effect of soil/RHA. The results are so promising, showing a new alternative to reduce the collapsible behavior of soils using an environmental friendly technology.

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