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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"Rice husk"”.
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Fabrication, characterisation and properties of polysiloxane rice husk silica composites
… (CO) method. Besides, the contribution of rice husk silica (RHA SiO2) and crystalline silica (CS) in enhancing the composites properties were also investigated. Moreover, fabricated composites were applied in hand grinder as a vibration damper and the performance had been analysed. The …
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Study on the effect of zeolite rice husk particles on polysulfone membrane
Rice Husk Zeolite Type Y (RHY) particles were prepared under static hydrothermal conditions by dissolution of sodium hydroxide (NaOH), sodium aluminate (NaAlO2) and amorphous silica obtained from rice husk ash (RHA). The RHY/polysulfones (PSf) membranes incorporated with RHY particle at different …
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Effect of rice husk silica reinforcement on recycled aa7075 aluminum chip matrix composite properties
… of aluminum alloy AA7075 reinforced silica by rice husk (waste natural fibers) as metal matrix composite. This study approaches the solid state technique to investigate the effect of rice husk silica as a reinforcement agent in metal matrix composites as it has remarkably lower operation cost …
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Waste to wealth : an economic analysis of applications for Rice Husk Ash in India
As the world's second largest rice grower, India can generate up to 5 million MT of ash from burning rice husk for fuel. The material that remains after combustion, known as Rice Husk Ash (RHA), is high in silica content, provides good insulation, and has a large surface areas for chemical …
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Nano-ChemoMechanical assessment of Rice Husk Ash cement by wavelength dispersive spectroscopy and nanoindentation
… contributing about 5% to global CO₂ emission. Rice Husk Ash (RHA) among many other silicious materials, has the potential to partially replace cement and enhance the properties of the final product. The goal of this thesis is an investigation of the fundamental properties of RHA cement. For a …
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Unprocessed rice husk ash as a partial replacement of cement for low-cost concrete
… and therefore it has to be imported. In rice-producing countries rice husk ash-a material naturally high in silica-can be used as a supplementary cementitious material and can substitute a portion of Portland cement in concrete without sacrificing the compressive strength. This study …
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Characterization of amorphous silica and crystalline silica from rice husk ash on water filtration application
… using an effectively silica from natural waste rice husk was evaluated. Rice husk was fired at 700ºC and 1000ºC respectively and produced rice husk ash which mutated to amorphous and crystalline silica. Five samples were fabricated after been mixed with the compositions of rice husk ash, kaolin …
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Enhancement of antifouling properties using rice husk silica particles in polysulfone membrane and optimization of its operating condition
This study investigates the effects of rice husk silica (RHS) as additive in the polysulfone membrane to enhance antifouling properties in membrane separation process. The flat sheet PSf/RHS membrane was prepared via phase inversion technique. The characterization and performance test were …
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Assessing low thermal conductivity of bricks which contain rice husk, corn cob and waste tea as an additive material
… problem of these waste materials. Recycling rice husk (RH), waste tea (WT) and corn corb (CC) into fired clay brick can improve thermal conductivity of the existing fired clay brick and reduce waste disposal problem. This study was conducted to identify the effects of using RH, WT and CC on …
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An integrated design process for durable concrete structures at the minimum environmental cost : application with the incorporation of rice husk ash
… Materials (SCM), as biomass ashes and especially Rice Husk Ash (RHA), offers new perspectives for decreasing the environmental cost of constructions.
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Optimizing flow rate and bacterial removal performance of ceramic pot filters in Tamale, Ghana
… parameters researched in this thesis includes rice husk size and the mixing process, and the performance variables includes flow rate and bacterial removal. Through this research, the author determined the positive exponential relationship between rice husk size and flow rate, and the negative …
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An experimental and analytical exploration of the effects of manufacturing parameters on ceramic pot filter performance
… and three manufacturing values: percentage rice husk, rice husk size and wall thickness. These relationships are used to run a series of optimizations that result in design recommendations including the recommendation to increase wall thickness to improve bacteria removal and to tightly …
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Towards Sustainable Braking: Effects of Alternative Ingredients on the Tribological Properties of Friction Materials
… involved the use of a natural ingredient, rice husk, as an ingredient in the composition of friction materials; whereas the second approach dealt with the substitution of the conventional phenolic resin binder with benzoxazine resins. The tribological and PM emission properties of friction …
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The effects of biochar on trace element and nutrient solubility in the presence of low-molecular-weight organic acids
… systems. Twelve biochar were characterised and rice husk biochar was selected for use. Firstly, aqueous batch experiments examined the biochar-driven immobilisation of trace elements and nutrients with and without LMWOAs. Then, batch studies tested if biochar would reduce the LMWOA-driven …
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Characteristics and mechanisms of atrazine sorption to biochar for land remediation
… pellets (WSP), miscanthus straw pellets (MSP), rice husk (RH) and oil seed rape (OSR) each at pyrolysis temperatures of 550°C and 700°C (excluding OSR at 700°C). The sorption mechanisms controlling atrazine sorption to these biochars were determined through various characterisation methods and …
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Co-gasification of biomass and plastic waste in a bubbling fluidized bed reactor
… of pure birch sawdust wood (BSD) and pure rice husk (RH) was compared with mixtures where each BSD and RH was mixed with both LDPE and HDPE in the presence of three different bed materials, namely silica sand, olivine, and red mud. It was found that mixing the biomass with LDPE and HDPE …
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Characterization and remediation of toxic metals in wastewater reuse for agricultural irrigation
… sorbents, including sugarcane bagasse, ground rice husk, and sawdust, is compared against the conventional metal removal techniques of activated carbon sorption and gypsum pH modification for chemical precipitation. A large percentage of metals present are bound to the soil reducible fraction, …
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Hemispheric ceramic pot filter evaluation and quality assurance program in Northern Ghana
… percentage of combustible by mass, in this case rice husk, is the primary factor in determining both the flow rate characteristics and strength characteristics of the CPF. The flow rate increases linearly as the percentage of combustible used in the CPF composition increases. The strength …
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Energy ans exergy analysis of biomass co-firing in pulverized coal power generation
… steam cycle system, while four biomass fuels (rice husk, pine sawdust, chicken litter, and refuse derived fuel) and two coals (bituminous coal and lignite) are chosen for the analysis. System performance is evaluated in terms of important performance parameters for different combinations of …
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