Fly ash as catalyst support material in the hydrolysis of ethylenediamine bisborane for hydrogen production: The use of coal-fired power plant waste

Too much CO2 is released during cement production. In many researches, the use of natural or recycled compounds plays an important role in the cement composition. The use of these components contributes both to reducing the amount of waste and to protecting the environment in nature. It is possible to produce an environmentally friendly concrete, thanks to its being a fly ash thermal power plant waste and its use as mineral additive in terms of its composition. In this study, it is aimed to produce impermeable concretes with the use of C type fly ash as substitutes for cement in concrete composition in substitution rates of 10 %, 30 % and 50 %. In order to reduce the permeability of concrete in this direction, as a result of grinding the fly ash in the ball mill for 0, 10, 20, 30, 45 and 60 minutes, concrete samples were prepared with and without admixture (Reference). Capillarity test was performed to determine the permeability at the end of cure periods of 28 and 90 days on concrete samples. According to the results obtained at the end of 28 days, the best impermeability was achieved in the mixture with 50 % fly ash replacement and 60 minutes grinding time. In 90 days, the best impermeability was obtained in the mixture with 30 % fly ash replacement and 0 minutes of grinding time. As a result, it was seen that permeability decreased with increasing thinness and substitution rate of fly ash in concrete composition.

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EVALUATION OF ENGINEERING PROPERTIES OF THERMAL POWER PLANT WASTE FOR SUBGRADE TREATMENT

Journal of Civil Engineering Science and Technology ◽

10.33736/jcest.3975.2021 ◽

2021 ◽

Vol 12 (2) ◽

pp. 112-123

Author(s):

Md. Belal Hossain ◽

Md. Roknuzzaman ◽

Md. Asib Biswas ◽

Motaharul Islam

Keyword(s):

Fly Ash ◽

Power Plant ◽

Specific Gravity ◽

Thermal Power Plant ◽

Thermal Power ◽

Engineering Properties ◽

Dry Density ◽

Cohesive Soils ◽

Plant Waste ◽

Class F

Soft cohesive soils have low strength, high plasticity, and a large expansion ratio making them unsuitable as a road subgrade. This study aims to evaluate the potential of power plant waste (fly ash) from the Barapukuria Thermal Power Plant, Dinajpur, Bangladesh to improve the characteristics of such soft cohesive soil. X-ray fluorescence test conducted to classify the power plant fly ash and the type was identified as “Class F” according to “American Association of State Highway and Transportation Officials” and "American Society for Testing and Materials". Laboratory tests were conducted on clay soil obtained from Dinajpur region modified by the collected power plant waste. As the Class F fly ash has low cementing property, 3% cement was added with it. Cement mixed soil was modified with 5%, 10%, 15%, and 20% fly ash respectively. Specific Gravity, Atterberg limits, Modified Proctor Compaction, Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR) tests were conducted. The study reveals that there is a decrease in specific gravity, dry density, and plasticity index with the addition of power plant waste. On the other hand, there is an increase in optimum moisture content, UCS, and CBR value. UCS and CBR values were found to be improved remarkably. Soaked CBR value of soil is found to be improved from 2.79% to 92.59% when treated with 5% fly ash and 3% cement. The UCS value of this modified soil was 560.36 kPa. The stabilized soil thus obtained meets the requirements for subgrade as specified by the Local Government Engineering Department (LGED)’s design manual (2005), Bangladesh. Since there is a possibility of leaching by dumping a large quantity of fly ash in the pond, the use of fly ash from the power plants to improve soft cohesive soils for road subgrade may be an environment-friendly alternative to its disposal in the ponds.

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FLY ASH FROM THERMAL POWER PLANT, RAW MATERIAL FOR GLASS-CERAMIC

Environmental Engineering and Management Journal ◽

10.30638/eemj.2013.041 ◽

2013 ◽

Vol 12 (2) ◽

pp. 337-342 ◽

Cited By ~ 1

Author(s):

Firuta Goga ◽

Roxana Dudric ◽

Calin Cormos ◽

Florica Imre ◽

Liliana Bizo ◽

...

Keyword(s):

Fly Ash ◽

Power Plant ◽

Glass Ceramic ◽

Thermal Power Plant ◽

Thermal Power ◽

Raw Material ◽

Plant Raw Material

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The Influence of the Ash Addition from Thermal Power Plant on the Mechanical, Thermal and Dielectric Characteristics of Mortars

Revista de Chimie ◽

10.37358/rc.18.8.6469 ◽

2018 ◽

Vol 69 (8) ◽

pp. 2040-2044

Author(s):

Georgeta Velciu ◽

Virgil Marinescu ◽

Adriana Moanta ◽

Ladislau Radermacher ◽

Adriana Mariana Bors

Keyword(s):

Thermal Conductivity ◽

Fly Ash ◽

Power Plant ◽

Cement Mortar ◽

Thermal Power ◽

Total Content ◽

Ash Content ◽

Dielectric Losses ◽

Dielectric Characteristics ◽

Cement Mortars

The influence of fly ash adittion (90 % fraction [ 100 mm) on the cement mortar characteristics was studied. The XRD, XRF, SEM and FTIR determinations indicated that fly ash used has a hollow microstructure of microsphere and cenosphere whose total content in SiO2, Al2O3 and Fe2O3 is 88.63 % and that of CaO and MgO of 8.55 %. The mechanical, thermal and dielectric determinations made on mortar samples with content of fly ash in the 0-40 % range have highlighted fact that the mechanical strength of cement mortars is maximal at 20 %, the increase in fly ash content leads to a decrease in relative density and thermal conductivity as well as and to increased dielectric losses tgd.

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EXTINCTION IS FOREVER! A FURTHER REASON FOR STRICT CONTROL OF INDUSTRIAL FLY ASH AND POWER PLANT DISCHARGE PRODUCTS

10.1130/abs/2020se-344228 ◽

2020 ◽

Author(s):

Wayne C. Isphording ◽

Keyword(s):

Fly Ash ◽

Power Plant ◽

Strict Control

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Study of the Physical Behavior of a New Composite Material Based on Fly Ash from the Combustion of Coal in an Ultra-Supercritical Thermal Power Plant

Journal of Composites Science ◽

10.3390/jcs5060151 ◽

2021 ◽

Vol 5 (6) ◽

pp. 151

Author(s):

Mustapha El Kanzaoui ◽

Chouaib Ennawaoui ◽

Saleh Eladaoui ◽

Abdelowahed Hajjaji ◽

Abdellah Guenbour ◽

...

Keyword(s):

Composite Material ◽

Fly Ash ◽

Power Plant ◽

High Performance ◽

Thermal Power ◽

Recovery Process ◽

Industrial Wastes ◽

Raw Material ◽

Polymerization Reaction ◽

High Performance Composite

Given the amount of industrial waste produced and collected in the world today, a recycling and recovery process is needed. The study carried out on this subject focuses on the valorization of one of these industrial wastes, namely the fly ash produced by an ultra-supercritical coal power plant. This paper describes the use and recovery of fly ash as a high percentage reinforcement for the development of a new high-performance composite material for use in various fields. The raw material, fly ash, comes from the staged combustion of coal, which occurs in the furnace of an ultra-supercritical boiler of a coal-fired power plant. Mechanical compression, thermal conductivity, and erosion tests are used to study the mechanical, thermal, and erosion behavior of this new composite material. The mineralogical and textural analyses of samples were characterized using Scanning Electron Microscopy (SEM). SEM confirmed the formation of a new composite by a polymerization reaction. The results obtained are very remarkable, with a high Young’s modulus and a criterion of insulation, which approves the presence of a potential to be exploited in the different fields of materials. In conclusion, the composite material presented in this study has great potential for building material and could represent interesting candidates for the smart city.

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