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Journal articles on the topic 'Rice hull ash (RHA)'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Yvette, D. Medrano, M. Duza Gerald, B. Casauay Ricardo, F. Dawan Andrea, and Gavien L. Alcomendras Lyle. "Efficacy of Rice Hull Ash against Bacterial Leaf Blight, Xanthomonas oryzae pv. oryzae." Indian Journal of Science and Technology 14, no. 37 (2021): 2880–87. https://doi.org/10.17485/IJST/v14i37.570.

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<strong>Objectives:</strong> Silica is not essential nutrients for plant growth; however, it shows that it is beneficial to rice, especially under stress conditions. This study is to test the efficacy of Rice Hull Ash (RHA) as a silicon source to enhance rice resistance against bacterial leaf blight, Xanthomonas oryzae pv. oryzae. <strong>Methods:</strong> The Complete Randomized Design (CRD) was adopted for the different treatments, replicated four (4) times. CSUT0 (control), CSUT1(30 grams RHA, Basal Application), CSUT2(30 grams RHA, Basal Application; 15 DAT), CSUT3 (30 grams

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2

Oliveira, Morgueto Natalia, Nunes Edilene de Cássia Dutra, Nascimento Fernando Codelo, and Saito Newton Haruo. "Study of the Effect of Compatibility Agents in the Incorporation of Rice Hull Ash in Polypropylene Compounds: Mechanical Properties." Materials Science Forum 930 (September 2018): 179–83. http://dx.doi.org/10.4028/www.scientific.net/msf.930.179.

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The present work aimed at incorporating the rice hull ash (RHA) into a polypropylene polymer matrix. The methodology applied was the case study, whereby the rice hull, residue generated during the grain extraction, was used in the present study. The samples were prepared with the addition of a coupling agent (silane) with 10% by mass in relation to the filler, to improve the characteristics of the ash/ matrix interface. The tensile test results showed that the modulus of elasticity increased proportionally to the addition of the RHA contents, promoting an increase in the material stiffness. Th

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3

Mirasol, Emie Salamangkit, Jemaeca Shanice G. Alegre, and Jay Mauro Q. Pambid. "Effect of rice hull ash as filler in local porcelain body formulations." IOP Conference Series: Earth and Environmental Science 1488, no. 1 (2025): 012021. https://doi.org/10.1088/1755-1315/1488/1/012021.

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Abstract In this study, rice hull ash (RHA) or rice hull silica was used as filler in local porcelain body formulations and investigated its physical and microstructural properties. Six formulations of all local raw materials of clay, feldspar, and fillers (quartz and RHA of varying ratio) were prepared. Hollow cylindrical specimens were formed by extrusion method, dried, finished, and sintered at 1200 °C in a muffle furnace for one hour. The physical properties of the porcelain specimens such as water absorption, apparent porosity, bulk density, compressive strength was determined following t

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4

Janes, M. E., R. Nannapaneni, A. Proctor, and M. G. Johnson. "Rice Hull Ash and Silicic Acid as Adsorbents for Concentration of Bacteriocins†." Applied and Environmental Microbiology 64, no. 11 (1998): 4403–9. http://dx.doi.org/10.1128/aem.64.11.4403-4409.1998.

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ABSTRACT A model procedure has been developed for the rapid extraction of five bacteriocins (nisin, pediocin RS2, leucocin BC2, lactocin GI3, and enterocin CS1) from concentrated freeze-dried crude culture supernatants by adsorption onto acid or alkaline rice hull ash (RHA) or silicic acid (SA). Bacteriocins were adsorbed onto RHA or SA by a pH-dependent method and desorbed by decreasing the pH to 2.5 or 3.0 and heating at 90°C for 5 min. The maximum adsorption and optimal pH range for different bacteriocins were as follows: nisin, 97% at pH 7.0; lactocin GI3, 94% at pH 6.0; pediocin RS2, 97%

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5

Marchal, Julien C., David J. Krug III, Patrick McDonnell, Kai Sun, and Richard M. Laine. "A low cost, low energy route to solar grade silicon from rice hull ash (RHA), a sustainable source." Green Chemistry 17, no. 7 (2015): 3931–40. http://dx.doi.org/10.1039/c5gc00622h.

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Polycrystalline silicon, with impurity levels lower than those of the SEMI III standard for solar grade silicon feedstock (≈99.9999% pure), was produced using rice hull ash (RHA) as a biogenic silica source.

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6

Fernandes, A. A., E. U. C. Frajndlich, and Humberto Gracher Riella. "A Low Cost ZSM-5 Zeolite Obtained from Rice Hull Ash." Materials Science Forum 498-499 (November 2005): 676–80. http://dx.doi.org/10.4028/www.scientific.net/msf.498-499.676.

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The high pure synthetic zeolite have a large application in industry and agriculture, being nowadays in majority imported in Brazil. The biomass like rice hull ash (RHA), a rice industry waste, can be real advantageous in manufacture of different materials, since that is produced in large scale in the country. The silica extraction from RHA by alkaline leaching is a low energetic coast process and high efficiency, obtaining high pure silica with high reactive amorphous structure, very interesting for zeolite production. In this work was developed a economically feasible route for the productio

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7

Zhao, Wenhua, Ceyao Ji, Qi Sun, and Qi Gu. "Preparation and Microstructure of Alkali-Activated Rice Husk Ash-Granulated Blast Furnace Slag Tailing Composite Cemented Paste Backfill." Materials 15, no. 13 (2022): 4397. http://dx.doi.org/10.3390/ma15134397.

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At present, the research on rice hull ash and cement-based materials as cementitious materials continues to deepen. Low-cost rice hull ash replaces part of Portland cement, which plays a dual role in saving material costs and improving environmental benefits. In this study, alkali-activated rice husk ash (RHA) and ground granulated blast furnace slag (GGBS) were used to prepare cementitious material. The influence of RHA dosage on the strength, slump degree, and coagulation time of cementitious material was studied. On this basis, tailing was used as an aggregate based on the orthogonal design

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8

Temeche, Eleni, Mengjie Yu, and Richard M. Laine. "Silica depleted rice hull ash (SDRHA), an agricultural waste, as a high-performance hybrid lithium-ion capacitor." Green Chemistry 22, no. 14 (2020): 4656–68. http://dx.doi.org/10.1039/d0gc01746a.

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The partial removal of SiO<sub>2</sub> from rice hull ash (RHA, an agricultural waste) is a simple, low cost, eco-friendly method of producing high-performance electrode material for hybrid-lithium ion capacitors.

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9

Kalaw, Martin Ernesto L., Alvin B. Culaba, Hoc Thang Nguyen, et al. "Mechanical and Thermal Properties of Geopolymers from Mixtures of Coal Ash and Rice Hull Ash using Water Glass Solution as Activator." ASEAN Journal of Chemical Engineering 15, no. 2 (2016): 51. http://dx.doi.org/10.22146/ajche.49686.

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Geopolymers, from industrial wastes such as blast furnace slag, red mud, and coal ash, among others, have emerged as technically viable, economically competitive, and environmentally attractive supplements and even alternatives to ordinary Portland cement (OPC). Furthermore, while the most impact shall be achieved with large-scale use in the general building and structural sector, as replacement or supplement to OPC, the properties of these geopolymers may be optimized for special niche applications. One of these applications is for light weight, low thermal conductivity, heat resistant, and m

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10

Berlin, Matt, Jesse Allen, Varadharajan Kailasam, David Rosenberg, and Edward Rosenberg. "Nanoporous Silica Polyamine Composites for Metal Ion Capture From Rice Hull Ash." Eurasian Chemico-Technological Journal 12, no. 2 (2010): 123. http://dx.doi.org/10.18321/ectj34.

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Rice Hull Ash (RHA) was converted to amorphous silica gel using a modified version of published literature procedures. The gels were characterized by a comparison of their CPMAS [29] Si NMR and Scanning Electron Microscopy (SEM) images with commercial silica gels. The resulting gels were silanized with a 7.5:1 mixture of methyltrichlorosilane and chloropropyltrichlorosilane and then reacted with poly(allylamine) (PAA) to produce the silica polyamine composite (SPC) BP-1. The BP-1 was then further modified with pyridine-2-carboxaldehyde to form the copper selective SPC, CuSELECT. This procedure

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11

Laine, Richard, Mengjie Yu, Man Wang, Philyoung M. Kim, Daniel M. Casey, and Matthew M. Fernandez. "(Invited) Agricultural Waste Derived Anodes for Lithium and Sodium Ion Batteries." ECS Meeting Abstracts MA2024-02, no. 2 (2024): 297. https://doi.org/10.1149/ma2024-022297mtgabs.

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Hard or turbostratic carbon anodes are most often derived from thermolysis of biomass in oxygen free environments and considerable data has been accrued to suggest that low specific surface area HC offers the most stable materials for lithiation and sodiation. As part of our efforts to valorize rice hull ash (RHA, 90 wt % SiO2/8 wt % C), produced in 150k ton/yr in the U.S. alone; we learned to first distillatively remove excess SiO2 to produce silica depleted RHA or SDRHA40-70 (40-70 wt.% SiO2).1 The resulting materials are nanocomposites of carbon and SiO2 intermixed at nm length scales.2 The

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Teng, Zhaohui, Shan Huang, Na Li, and Qulan Zhou. "SO2 Tolerance of Rice Hull Ash Based Fe-Cu Catalysts for Low-Temperature CO-SCR of NO." Catalysts 12, no. 5 (2022): 534. http://dx.doi.org/10.3390/catal12050534.

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Rice husk ash (RHA) has potential as a supporter of catalysts. In this research, we studied the activity and SO2 tolerance of RHA-based Fe-Cu oxide in the reduction of NO by CO. Characterization methods were employed to study the properties of the catalysts and their SO2 tolerance. Activity and SO2 resistance were also tested at different temperatures. We recommend two catalysts with SO2 resistance ability: Fe0.67Cu0.33/RHA (the highest catalytic activity) and Fe0.8Cu0.2/RHA. The NO removal rate hardly changed with the addition of SO2 and was kept at about 100%. However, the CO conversion rate

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Badua, Dean Aldrene O., Raffy M. Espiritu, Nicole A. Gaudia, Ryan Christian A. Mazano, and Karen Joyce B. Santiago. "Effectiveness of Rice (Oryza sativa) Hull Ash (RHA) as Partial Replacement of Cement in Concrete Exposed in Coastal Conditions." PaperASIA 40, no. 2b (2024): 105–12. http://dx.doi.org/10.59953/paperasia.v40i2b.78.

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Cement use and production are among the largest contributors to greenhouse gases. Thus, we endeavor to utilize agricultural wastes to reduce the consumption of cement while improving the properties of the concrete. This study aimed to determine the effect of rice hull ash (RHA), as partial cement replacement, on concrete's workability, permeability, and compressive strength. Also, it aimed to compare the changes in compressive strength before and after exposure to coastal conditions and perform a cost analysis of concrete mixtures. This experiment used three different RHA loadings (5%, 10%, 15

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Sakti, Satya Candra Wibawa, and Dwi Siswanta. "Adsorption of gold(III) on ionic imprinted amino-silica hybrid prepared from rice hull ash." Pure and Applied Chemistry 85, no. 1 (2012): 211–23. http://dx.doi.org/10.1351/pac-con-12-01-02.

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In this research, the adsorption of Au(III) ion on ionic imprinted amino-silica hybrid (Im-ASH) in aqueous solution has been studied. Im-ASH was synthesized via sol-gel technique using a solution of sodium silicate (Na2SiO3) from rice hull ash (RHA) as the precursor and Au(III) ion as the template. Adsorption was carried out in a batch system with variation of pH, contact time, and Au(III) ion concentration. The selectivity of adsorbent toward Au(III) was examined in the presence of Cu(II) ion. The result of the kinetic study demonstrated that the adsorption of Au(III) ion followed pseudo-seco

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15

Shimizu, Eiza, Michael Angelo Promentilla, and Derrick Ethelbhert Yu. "Utilization of Coal Fly Ash and Rice Hull Ash as Geopolymer Matrix-cum-Metal Dopant Applied to Visible-Light-Active Nanotitania Photocatalyst System for Degradation of Dye in Wastewater." Catalysts 10, no. 2 (2020): 240. http://dx.doi.org/10.3390/catal10020240.

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Geopolymer (GP) spheres made from coal fly ash (FA) and rice hull ash (RHA) waste products are utilized as both support matrix and dopant applied to titania (TiO2) photocatalyst for organic dye degradation in wastewater. Processing of FA and RHA via suspension-solidification method resulted in GP spheres with nanoporous morphology. The nanocrevices enabled low-energy sol-gel TiO2 coating technique because they served as anchoring sites on the geopolymer surface that favored rigidity and larger surface area. The GP-TiO2 system has been characterized by infrared spectroscopy, X-ray diffraction a

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16

Daarol, Michelle, Clib James Delos Reyes, and Showna Lee Sales. "Utilizing Rice Hull Ash as Partial Replacement for Cement in Producing Soil-Cement: Materials for Deep Mix Soil Stabilization." E3S Web of Conferences 405 (2023): 04001. http://dx.doi.org/10.1051/e3sconf/202340504001.

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Stabilization of residual soils is studied chemically using cement and Rice Hull Ash (RHA). The investigation includes the evaluation of the physical properties of the soil and its classification. Furthermore, changes in the unit weight, the specific gravity of non-treated and treated with 5-25% RHA partially replacing soil-cement samples, and the moisture content of non-treated and treated soil before and after curing (21 days) were also examined. Moreover, ultimately, an investigation as to what percentage of RHA in partially replacing cement would produce the largest compressive strength an

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Principio, Neslyn L., John Patrick B. Avenido, Jinky Marie S. Manalo, and Deo S. Perez. "Mechanical Properties of Recycled Polypropylene Macro Flat Fiber Reinforced Concrete with Rice Hull Ash as Partial Replacement to Cement." Key Engineering Materials 858 (August 2020): 199–204. http://dx.doi.org/10.4028/www.scientific.net/kem.858.199.

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Due to urbanization, the use of concrete in construction and waste production are arising that resulted to negative impact in environment. There are several studies utilizing cementitious material as substitute to cement and plastic waste as additive to concrete which has potential in increasing the strength. This study utilized recycled polypropylene macro fiber (RPPMF) as a reinforcement and rice hull ash (RHA) as substitute to cement. Varying percentage of RHA (10%, 15%, and 20%) and RPPMF (0.5%, 0.75%, and 1.0%) were incorporated in the concrete mix. Compressive and flexural strength resul

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Bravo, Patricia Isabel, Roy Alvin Malenab, Eiza Shimizu, Derrick Ethelbhert Yu, and Michael Angelo Promentilla. "Synthesis of geopolymer spheres with photocatalytic activity." MATEC Web of Conferences 268 (2019): 04007. http://dx.doi.org/10.1051/matecconf/201926804007.

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Geopolymer is an emerging “green” cementitious material which has a potential to valorize waste such as rice hull ash (RHA). Geopolymer is a kind of alkali-activated material which forms from the reaction of alumino-silicates in an alkaline solution. This study uses RHA as the raw material for alkaline activator while metakaolin (MK) serves as a geopolymer precursor to synthesize the so-called geopolymer sphere. Then its capacity as a porous matrix was explored upon incorporation of TiO2 nanomaterial using horizontal vapor phase growth (HVPG) technique to enhance its photocatalytic property. I

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Silva, Angelo Magno dos Santos e., Paula Taiane Pascoal, Magnos Baroni, Alexandre Silva de Vargas, Jaelson Budny, and Luciano Pivoto Specht. "Use of Phosphoric Acid and Rice Hulk Ash as Lateritic Soil Stabilizers for Paving Applications." Sustainability 15, no. 9 (2023): 7160. http://dx.doi.org/10.3390/su15097160.

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Phosphoric acid (H3PO4) is a product that can be used as a stabilizing additive for tropical soils in an exploratory manner by the construction industry. For the drying process of this grain, its husks are used as fuel for ovens, generating rice husk ash (RHA), which is considered an environmental liability if not reused. In this sense, this paper aimed to evaluate the resilient behavior and the simple compressive strength, at different curing ages, of the use of rice husk ash and phosphoric acid in a simple and combined mixture for the stabilization of lateritic soil. The lateritic soil was m

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Sulastri, Siti, Nuryono Nuryono, Indriana Kartini, and Eko Sri Kunarti. "ADSORPTION OF Ca(II), Pb(II) AND Ag(I) ON SULFONATO-SILICA HYBRID PREPARED FROM RICE HULL ASH." Indonesian Journal of Chemistry 11, no. 3 (2011): 273–78. http://dx.doi.org/10.22146/ijc.21392.

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In this research, adsorption of Ca(II), Pb(II) and Ag(I) in aqueous solution onto sulfonato-silica hybrid (SSH) prepared from rice hull ash (RHA) has been studied. The preparation of SSH adsorbent was carried out by oxidation of mercapto-silica hybrid (MSH) with hydrogen peroxide (H2O2) solution 33%. MSH was prepared, via sol-gel process, by adding 3 M hydrochloric acid solution to mixture of sodium silicate (Na2SiO3) solution and 3(trimethoxysilyl)-1-propanthiol (MPTS) to reach pH of 7.0. Solution of Na2SiO3 was generated from destruction of RHA with sodium hydroxide solution followed with he

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Dorigo, Wana Favero Gaburo, Leonardo Luiz Lyrio da Silveira, and Phillipe Fernandes de Almeida. "Ecological Fickerts Used in the Dimension Stones Polishing Reinforced with Silica from the Rice Hull Ash." Key Engineering Materials 848 (June 2020): 66–74. http://dx.doi.org/10.4028/www.scientific.net/kem.848.66.

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The processing stages of the dimension stones industry uses inputs mainly from petroleum-derived chemicals that can cause damages to the environment and to the human health. Therefore, there is a need to develop more ecological and sustainable technologies aiming to replace the conventional inputs by less aggressive ones. From this, ecological fickerts made from polyurethane castor oil resin (Ricinus communis L.), silicon carbide (SiC), silica from rice hull ash (RHA) and synthetic diamonds were developed in order to compare them with the epoxy resin fickerts currently used in industry. For su

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Yuliatun, Leny. "Invitro Activity of Mineral Trioxide Aggregate Modification from Rice Hull Ash Silica and Calcium Oxide from Clamshells." BERKALA SAINSTEK 12, no. 2 (2024): 70. http://dx.doi.org/10.19184/bst.v12i2.45789.

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The impact of SrO particles and hydroxyapatite (HA) on the characteristics of Mineral Trioxide Aggregate (MTA) from silica Rice Husk Ash (RHA) and Precipitated Calcium Carbonate (PCC) from clam shell has been studied in this research. Silica and calcium oxide are used as material to form tricalcium silicate (C3S) and dicalcium silicate (C2S) in MTA. Bi2O3 and SrO were added in MTA with 18% (w/w) total percentage. MTA was made with a sol-gel process and used catalyst NH3. After synthesis, material was calcined at 1000 oC for 3 h. HA was added at percentages of 3, 6, and 9% in 5% SrO modified MT

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Mahatmanti, F. Widhi, Nuryono Nuryono, and Narsito Narsito. "Adsorption of Ca(II), Mg(II), Zn(II), and Cd(II) on Chitosan Membrane Blended with Rice Hull Ash Silica and Polyethylene Glycol." Indonesian Journal of Chemistry 16, no. 1 (2018): 45. http://dx.doi.org/10.22146/ijc.21176.

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In this research, chitosan based membrane blended with rice hull ash (RHA) silica and polyethylene glycol (PEG) has been applied as adsorbent of Ca(II), Mg(II), Zn(II) and Cd(II) in an aqueous solution. Membrane was synthesized by blending RHA silica and polyethylene glycol into chitosan. Silica and polyethylene glycol blended into the chitosan to improve the mechanical properties and the membrane porous. The membrane was characterized using Fourier Transform infrared (FTIR) spectroscopy, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and swelling degree analyzer. Adsorption of m

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Zhu, Peng, Li Jiang Hu, Di Wang, Qun Zhang, and Sheng Yao Song. "Synthesis of (3-Mercaptopropyl)Trimethoxysilane-Modified ZMS and Study of the Enhancement of Ammonia-Nitrogen Removal from Water." Materials Science Forum 686 (June 2011): 461–67. http://dx.doi.org/10.4028/www.scientific.net/msf.686.461.

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In this work, the mesoporous zeolite molecular sieve (ZMS, SBA-15) was prepared by rice hull ash (RHA) and the surface of ZMS pore was modified by (3-mercaptopropyl) trimethoxysilane (MCPMS) with sulfhydryl (SH) as active group connecting to the SBA-15 pore surface. The capacity of removing ammonia-nitrogen (NH3-N) in water will be increased because of the increasing in adsorption active groups. The micro-structures of SBA-15-SH were characterized by FTIR, SEM, TEM, SAXRD. The diffusion and adsorbed behavior of NH3-N in pores of the modified ZMS was simulate by using a molecular dynamic simula

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Samraj, S., K. Senthilkumar, P. Induja, M. Venkata Ratnam, G. V. Aatral, and G. V. S. Ramakrishna. "Extraction of Microcrystalline Cellulose and Silica from Agriculture Waste and Its Application in Synthesis of Wheat Gluten and Fish Scales Derived Bioplastic." International Journal of Biomaterials 2022 (August 24, 2022): 1–6. http://dx.doi.org/10.1155/2022/2297364.

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Plastics play a significant part in human life and the world we live in. The use of plastics results in detrimental effects on the natural world, which compels us to look for viable replacements. As a result of their enhanced capacity to biodegrade, bioplastics are becoming increasingly important materials. In recent years, there has been a rapid ascent in the utilization of biopolymers in various applications. The objective of this research is to investigate the impact that silica obtained from rice hull ash (RHA) and microcrystalline cellulose (MCC) obtained from groundnut husk have on the p

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E., C. KІlІç, Akyol E., Karakuzu kizler B., C. Özarslan A., Özel C., and Yücel S. "Production of novel composite films based on PVA-biosilica." Journal of Indian Chemical Society Vol. 97, No. 10c, Oct 2020 (2020): 2092–96. https://doi.org/10.5281/zenodo.5665953.

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Department of Chemical Engineering, Yildiz Technical University, Istanbul, Turkey Department of Bioengineering, Yildiz Technical University, Istanbul, Turkey <em>E-mail</em>: yuce.sevil@gmail.com <em>Manuscript received online 20 October 2020, revised and accepted 31 October 2020</em> In this study, PVA/silica gel composite films were prepared. For this, sodium silicate solution was produced from rice hull ash (RHA) which is a cheap agricultural waste by alkali extraction method. Sodium silicate solutions were gelated at pH 7 with HCl addition by sol-gel method. Silica gels were added to PVA f

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Kalaw, Martin Ernesto, Joshua Martin Kalaw, and Michael Angelo Promentilla. "GEOPOLYMERS SYNTHESIZED FROM PHILIPPINE COAL ASH AS SUSTAINABLE ALTERNATIVE LOW HEAT TRANSMISSION AND FIRE-RESISTANT MATERIAL FOR BUILDINGS." ASEAN Engineering Journal 11, no. 3 (2021): 45–56. http://dx.doi.org/10.11113/aej.v11.16871.

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Geopolymers are formed from alumina and silica rich materials by alkali dissolution and subsequent polycondensation into a polymeric network. Geopolymerization technology presents a great potential for positive environmental impact since many alumina- and silica- rich industrial waste materials, such as coal ashes, blast furnace slags, mine tailings, etc., can be used as its precursor materials in a process that requires less energy and gives up less emissions vis-à-vis the current conventional OPC (ordinary Portland cement) technology. In this study, geopolymer samples were prepared using an

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Setu, Fahmida Farzana, Md Arifur Rahman, Md Zahirul Islam Sarker, Md Kafil Uddin, Istiaq Ahmed, and K. M. Mohiuddin. "Application of Diverse Silicon Sources to Soil for Reducing Wheat Blast Disease." Journal of the Bangladesh Agricultural University 22, no. 3 (2024): 295–309. http://dx.doi.org/10.3329/jbau.v22i3.76401.

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Despite the economic potential of wheat for food security, blast disease is one of the major constraints to wheat production in warm and humid areas. Silicon (Si) increases crop yields and resistance to both biotic and abiotic stresses. The effect of various Si sources, including Na2SiO3, MgSiO3, CaSiO3, and rice hull ash (RHA), on suppressing wheat blast (WB) incidence was studied at Bangladesh Institute of Nuclear Agriculture field from November 2019 to March 2020 using a complete randomized design (CRD) with three replications. Total 42 plastic pots were filled with the recommended doses of

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Rodrigues, Jocielys Jovelino, Alfredina dos Santos Araujo, Antônio Fernandes Filho, and Maria do Socorro Araújo Rodrigues. "Study fischer-tropsch synthesis." Holos Environment 23, no. 2 (2023): 87–102. http://dx.doi.org/10.14295/holos.v23i2.12496.

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This work was to evaluate the catalytic properties Ru/Cobalt/SBA-15 catalyst for Fischer-Tropsch synthesis (FTS). The molecular sieve SBA-15 synthesized by hydrothermal method with rice husk ashes (RHA) and with tetraethyl orthosilicate (TEOS). The Ru promoted Co/SBA-15 catalyst was prepared by wet impregnation method and was characterized by X-ray diffraction, X-ray energy dispersion spectrophotometer, N2 adsorption-desorption, temperature-programmed reduction and transmission electron microscopy. The Fischer-Tropsch synthesis using the catalysts were carried out to evaluate the catalysts act

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Yu, Mengjie, Eleni Temeche, and Richard Laine. "Green Silicon Carbide (SiC) and SiC/Graphite Composite Anodes for Lithium-Ion Batteries." ECS Meeting Abstracts MA2022-02, no. 7 (2022): 2422. http://dx.doi.org/10.1149/ma2022-0272422mtgabs.

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Arising from concerns of continuously deteriorating environmental issues, worldwide efforts are dedicated to developing more sophisticated energy storage techniques to replace traditional nonrenewable sources. Given the significant greenhouse gas emissions that occur coincident with current battery production and operation, the introduction of agricultural waste rice hull ash (RHA), a byproduct of biomass combustion, as a source for battery components could facilitate the actual realization of green and sustainable energy storage. Herein, we focus on using RHA to produce SiC with hard carbon (

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Endale, Solomon Asrat, Woubishet Zewdu Taffese, Duy-Hai Vo, and Mitiku Damtie Yehualaw. "Rice Husk Ash in Concrete." Sustainability 15, no. 1 (2022): 137. http://dx.doi.org/10.3390/su15010137.

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This study conducted an extensive literature review on rice husk ash (RHA), with a focus on its particle properties and their effects on the fresh, mechanical, and durability properties of concrete when used as a partial cement replacement. The pozzolanic property of RHA is determined by its amorphous silica content, specific surface area, and particle fineness, which can be improved by using controlled combustion and grinding for use in concrete. RHA particle microstructures are typically irregular in shape, with porous structures on the surface, non-uniform in dispersion, and discrete throug

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Amalia, L. Tiyani, Y. Setiawan, and M. F. R. Hasan. "Performance of SCC Concrete with Additional Materials of Rice Husk Ash." IOP Conference Series: Earth and Environmental Science 1116, no. 1 (2022): 012074. http://dx.doi.org/10.1088/1755-1315/1116/1/012074.

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Abstract Concrete with high ductility, workable, high strength, easy to flow without compaction, and durable is a concrete need in the future. Concrete with this quality, one of which is to make self-compacting concrete (SCC). This paper reports performance of self compacting concrete (SCC) containing rice hush ash. Rice husk ash is waste from burning rice husks. The purpose of this study was to determine the performance of SCC concrete with the addition of rice husk ash. SCC specimens were made using rice husk ash (RHA) and SCC without rice husk ash (NRHA). The specimens were made with water

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I., Sravanthi* Mohammed Ismail. "EFFECT OF REPLACEMENT OF FLYASH AND RICEHUSK ASH ON STRENGTH STUDIES OF M25 GRADE CONCRETE." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 11 (2016): 428–36. https://doi.org/10.5281/zenodo.167188.

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In the ancient period, construction work was mostly carried out with help of mudstone from industry. Fly ash is a by-product of burned coal from power station and rice husk ash is the by –product of burned rice husk at higher temperature from paper plant. Considerable efforts are being taken worldwide to utilize natural waste and bye –product as supplementary cementing materials to improve the properties of cement concrete. Rice husk ash (RHA) and Fly ash (FA) is such materials. RHA is bye-product of paddy industry. Rice husk ash is a highly reactive pozzolanic material produced by controlled

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Salem Al-Ahdal, Basheer Mohammed, Li Bi Xiong, and Rana Faisal Tufail. "Mechanical properties of concrete containing Fly Ash, Rice Husk Ash and Waste Glass Powder." Civil Engineering Journal 4, no. 5 (2018): 1019. http://dx.doi.org/10.28991/cej-0309153.

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This paper for the first time investigates the workability, compressive and tensile strength of concrete containing Fly Ash, Rice Husk Ash and Waste Glass Powder. Seventy six cube specimen (150 150 150 mm were cast with different composition of Fly Ash, Rice Husk Ash ,Waste Glass Powder and steel fibers. The cubes were tested for axial compression and tensile tests. The research also investigated the effect of curing regime on the compressive and tensile strength of concrete cube specimen. The results revealed that the addition of 15 % Rice Husk Ash and 39% Fly Ash increased the workability of

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Wang, Hai Long, Qi Wen Peng, and Xiao Yan Sun. "Mechanical Behaviors and Chloride Permeability of Rice Husk Ash Concrete." Applied Mechanics and Materials 238 (November 2012): 75–78. http://dx.doi.org/10.4028/www.scientific.net/amm.238.75.

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Rice husk ash (RHA) was used as a mineral additive in concrete and replaced the ordinary cement by 0-30% in this study. The fresh concrete properties, compressive strength, split tensile strength, and elastic modulus as well as the chloride permeability of concretes mixed with different RHA contents was tested. The experimental results reveal that the fluidity, the mechanical behaviors and the chloride ion resistance of rice husk ash concrete decrease with the increasing replacement rate of RHA. The particle size of RHA limits its pozzolanic activity, which indicates that the controlled burnin

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Zeng, Zong Qiang, He Ping Yu, Hong Chao Liu, Shuang Quan Liao, and Zheng Peng. "Fabrication of Rice Husk Ash/Natural Rubber Composite." Advanced Materials Research 393-395 (November 2011): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.92.

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The preparation of rubber-based composite from agricultural by-product is the main trend to upgrade the performance of rubber and reduce the cost. In this work, the rice husk ash/natural rubber (RHA/NR) composites were prepared by latex mixing process using the RHA modified with rare earth coupling agent. The mechanical properties, dynamic mechanical properties, thermal stability and morphology of RHA/NR composites were analyzed by universal testing machine, dynamic mechanical analyzer, thermo gravimetric analyzer and scanning electron microscope. The results indicate that previous modificatio

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Liu, Chun, Cong-Ying Jiang, Deng-Deng Wang, and Deng Chen. "Microstructure of High Volume Rice Husk Ash Concrete." Science of Advanced Materials 14, no. 5 (2022): 920–26. http://dx.doi.org/10.1166/sam.2022.4240.

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Rice hush ash (RHA) is a promising supplementary cementitious material (SCM) and the application of concrete containing high volume SCMs is one of effective strategies to relieve the carbon emission from building industry. The effect of RHA contents up to 60% to replace cement on the microstructure evolution of concrete has been experimentally investigated through the compressive strength, nanoindentation and scanning electron microscope methods. The results indicate that the utilization of RHA reduces the early compressive strengths of concrete, but less than 40% RHA increases the later compr

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Wu, Lang, Ru Yu Yan, Jun Yao Cai, and Wen Xia Yue. "Hydration Kinetics Model of Rice Husk Ash-Blended System." Key Engineering Materials 842 (May 2020): 306–13. http://dx.doi.org/10.4028/www.scientific.net/kem.842.306.

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Rice husk ash (RHA) is a highly active pozzolanic material produced by rice husk combustion control, and it is widely used as a mineral admixture in the production of high performance concrete. The addition of rice husk ash has a complex effect on cement hydration. Current models do not explain all these complex effects. In this paper, the hydration kinetics model of RHA-cement cementitious system was established by considering the dilution effect, chemical effect and water absorption and release of porous structure of rice husk ash to composite cementitious system. Compared with the experimen

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Oyerinde, Temitayo Opeyemi, Margaret Damilola Oyewole, Olaniyi Alake, Favour David Agbajor, and Modupe Cecilia Mewomo. "Tensile Strength Determination for Rice Husk Ash and Corn Cob Ash Blended Cement Concrete." Key Engineering Materials 970 (December 15, 2023): 55–60. http://dx.doi.org/10.4028/p-yjnbb1.

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This study concerns the determination of the tensile strength of concrete produced by partially replacing cement with rice husk ash (RHA) and corn cob ash (CCA). The tensile strength of RHA and CCA blended cement concrete and its suitability as sustainable green concrete materials were investigated. Cubes of 100x 100 x 100 mm unmodified concrete (pure cement) and modified concrete (cement, RHA and CCA) were cast using a mix ratio of 1:2:4 containing binder (cement, RHA, CCA), sand, and coarse aggregate. Physical properties (moisture content, grain size analysis and specific gravity) of RHA and

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Riyana, M. S., Dhanya Sathyan, and M. K. Haridharan. "Effective Utilization of Industrial and Agricultural Waste for Developing Sustainable Self-Compacting Concrete." Materials Science Forum 1048 (January 4, 2022): 376–86. http://dx.doi.org/10.4028/www.scientific.net/msf.1048.376.

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SCC (Self compacting concrete) can fill formwork and encloses reinforcing bars under gravity and maintains homogeneity without vibration. SCC shortens the period of construction, guarantees compaction in confined zones, moreover terminates noise due to vibration. The wide spread application of SCC is restricted because of the high cost for the production of SCC with high cement content and chemical admixtures. In order to make the production of SCC economical, and to reduce the high cement content the Ordinary Portland Cement in SCC can be blended with pozzolanic materials like rice husk ash a

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Kamau, John, Ash Ahmed, and Killian Ngong. "Sulfate Resistance of Rice Husk Ash Concrete." MATEC Web of Conferences 199 (2018): 02006. http://dx.doi.org/10.1051/matecconf/201819902006.

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Durability of concrete is defined as its ability to resist deterioration after exposure to the environment of its use. This work investigates the performance of Rice Husk Ash (RHA) concrete in sodium sulfate (Na2SO4), magnesium sulfate (MgSO4) and combined Na2SO4 and MgSO4 solutions. Concrete bar specimens and cubes were prepared for expansion and strength deterioration tests respectively using RHA replacement at the 7.5% replacement by volume, which had achieved the highest compressive strength, as well as at the 30% replacement by volume, which was the highest replacement for the study. Stre

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Pavan kumar, Ram, S. P. Challagulla, and Kruthi Kiran Ramagiri. "Mechanical Performance and Acid Resistance of Self Compacting Concrete with Fly Ash and Rice Husk Ash as Cementitious Materials." IOP Conference Series: Materials Science and Engineering 1197, no. 1 (2021): 012055. http://dx.doi.org/10.1088/1757-899x/1197/1/012055.

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Abstract Self-compacting concrete (SCC) is an extremely flowable, non-segregating concrete that fills every corner of formwork evenly and completely by its own mass and encapsulates reinforcement without vibrating, all while retaining homogeneity. SSC’s mechanical efficiency can be enhanced by using byproducts or waste materials as cement replacements. Rice husk ash (RHA) & fly ash stay very reactive byproducts. Because of its high silica content, Fly ash and RHA have strong pozzolanic properties, used as complementary cementations material in SSC. The automatic properties and Self-compact

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Bheel, N., M. A. Jokhio, J. A. Abbasi, H. B. Lashari, M. I. Qureshi, and A. S. Qureshi. "Rice Husk Ash and Fly Ash Effects on the Mechanical Properties of Concrete." Engineering, Technology & Applied Science Research 10, no. 2 (2020): 5402–5. http://dx.doi.org/10.48084/etasr.3363.

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Cement production involves high amounts of energy consumption and carbon dioxide emissions. Pakistan is facing a serious energy crisis and cement’s cost is increasing. In addition, landfilling of potential concrete components can lead to environmental degradation. The use of waste as cement replacement not only reduces cement production cost by reducing energy consumption, but it is also environmentally friendly. The purpose of this study is to analyze the characteristics of concrete by partially replacing cement with Rice Husk Ash (RHA) and Fly Ash (FA). This study is mainly focused on the pe

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Bheel, N., M. A. Jokhio, J. A. Abbasi, H. B. Lashari, M. I. Qureshi, and A. S. Qureshi. "Rice Husk Ash and Fly Ash Effects on the Mechanical Properties of Concrete." Engineering, Technology & Applied Science Research 10, no. 2 (2020): 5402–5. https://doi.org/10.5281/zenodo.3748312.

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Cement production involves high amounts of energy consumption and carbon dioxide emissions. Pakistan is facing a serious energy crisis and cement’s cost is increasing. In addition, landfilling of potential concrete components can lead to environmental degradation. The use of waste as cement replacement not only reduces cement production cost by reducing energy consumption, but it is also environmentally friendly. The purpose of this study is to analyze the characteristics of concrete by partially replacing cement with Rice Husk Ash (RHA) and Fly Ash (FA). This study is mainly focused on

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Islabão, Gláucia Oliveira, Ledemar Carlos Vahl, Luís Carlos Timm, Donald Luiz Paul, and Aline Hernandez Kath. "Rice husk ash as corrective of soil acidity." Revista Brasileira de Ciência do Solo 38, no. 3 (2014): 934–41. http://dx.doi.org/10.1590/s0100-06832014000300025.

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Rice husk ash (RHA) is a by-product from the burning of rice husk that can have favorable effects on the soil in terms of acidity correction. The objectives of this study were to determine the effective calcium carbonate equivalent (ECC) of RHA under field conditions, and establish technical criteria as a basis for estimating the overall ECC of RHA. The 12 treatments of the experiment consisted of 10 RHA dosages (0, 10, 20, 30, 40, 60, 80, 100, 120, and 140 Mg ha-1) and two references, one of which was an absolute control (AC) and the other a plot limed and fertilized according to official rec

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Hossain, Md Rahat, Md Hasan Ali, Md Al Amin, Md Golam Kibria, and Md Shafiul Ferdous. "Fabrication and Performance Test of Aluminium Alloy-Rice Husk Ash Hybrid Metal Matrix Composite as Industrial and Construction Material." International Journal of Engineering Materials and Manufacture 2, no. 4 (2017): 94–102. http://dx.doi.org/10.26776/ijemm.02.04.2017.03.

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Aluminium matrix composites (AMCs) used extensively in various engineering fields due to their exceptional mechanical properties. In this present study, aluminium matrix composites (AMCs) such as aluminium alloy (A356) reinforced with rice husk ash particles (RHA) are made to explore the possibilities of reinforcing aluminium alloy. The stir casting method was applied to produce aluminium alloy (A356) reinforced with various amounts of (2%, 4%, and 6%) rice husk ash (RHA) particles. Physical treatment was carried out before the rice husk ash manufacturing process. The effect of mechanical stre

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Zahemen, Tuleun Lawrence, Jimoh Alao, and Wasiu John. "Performance of Rice Husk Ash - Calcium Carbide Waste in Concrete." Advanced Materials Research 1155 (August 2019): 41–53. http://dx.doi.org/10.4028/www.scientific.net/amr.1155.41.

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This paper examines and present the findings of the physical and mechanical properties of concrete containing rice husk ash (RHA), and the blend of rice husk ash with calcium carbide waste (RHA-CCW). Concrete cubes, cylindrical and beam specimens containing different percentages of RHA and RHA-CCW by weight of cement (5, 10, 15 and 20 %) were cast. Compressive strength test was carried out after the specimens were cured in water for 7, 14, 28 and 56 days. Test for tensile and flexural strength was carried out after 28 days curing. Initial and final setting time test was carried out on mortar s

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Ige, Joseph A., Mukaila A. Anifowose, Samson O. Odeyemi, Suleiman A. Adebara, and Mufutau O. Oyeleke. "Assessment of Rice Husk Ash (RHA) and Calcium Chloride (CaCl₂) on Compressive Strength of Concrete Grade 20." International Journal of Engineering Research in Africa 40 (December 2018): 22–29. http://dx.doi.org/10.4028/www.scientific.net/jera.40.22.

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This research assessed the effect of Nigerian rice husk ash (RHA) and calcium chloride (CaCl2) as partial replacement of cement in concrete grade 20. Rice husk ash (RHA) is obtained by combustion of rice husk in a controlled temperature. The replacement of OPC with rice husk ash (RHA) were 0%, 5%, 10%, 15% and 20%. 1% of Calcium Chloride was blended with OPC/RHA in all the test specimens except from control mix. Concrete cubes of sizes 150mm x 150mm x 150mm were cast and cured in water for 7, 14 and 28 days respectively. Slump test was conducted on fresh concrete while density test and compres

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Panennungi, T., Bakhrani A. Rauf, Asmah Adam, Irma Aswani Ahmad, and Onesimus Sampebua. "Mechanical Properties of Brick Using Rice Husk Ash." IOP Conference Series: Earth and Environmental Science 1209, no. 1 (2023): 012005. http://dx.doi.org/10.1088/1755-1315/1209/1/012005.

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Abstract Rice husk waste is very much produced because Indonesia is an agricultural country. This waste is freely burned around the factory and produces ash. This study used rice husk ash as an additive in bricks. This research aims to describe: (1) the compressive strength of brick with various percentages of RHA (0% - 15%), (2) the water absorption of brick with various percentages of RHA (0% - 15%), and (3) quality level of compressive strength and water absorption based on Indonesian Standard SNI 15-2094-2000. The methods are: (1) preparation of clay and rice husk ash, (2) produce brick wi

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Rizalman, Ahmad Nurfaidhi, Mohd Khairulizzat Mohd Bisi, Sk Muiz Sk Abd Razak, and Mazizah Ezdiani Mohamad. "Properties of Self-Compacting Concrete Containing Palm Oil Fuel Ash and Rice Husk Ash." Key Engineering Materials 943 (March 29, 2023): 201–11. http://dx.doi.org/10.4028/p-prrlcq.

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Palm fuel ash (POFA) and rice husk ash (RHA) are usually disposed to open areas and landfills without treatment, resulting in environmental problems. Both materials fulfilled the criteria as pozzolanic material, thus can be used as substitutes to cement. This paper presents the comparison in the fresh and hardened properties between self-compacting concrete (SCC) containing POFA and RHA. The SCC mixtures were produced based on water/binder ratio of 0.6. Both POFA and RHA were introduced in concrete replacing 0%, 10%, 20% and 30% of cement by weight. The fresh SCC was tested for three (3) fresh

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