Analysis of the Distribution of Chemical Compounds from Fly Ash Exposed to Weather Conditions

Sambo, Aleksandra

doi:10.2478/cpe-2014-0020

Cited by 4 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the America Society for Testing Materials (ASTM C618-05), the ash used in this study can be classified as Group F. The major components of fly ash were oxides of silicon and aluminium (Figure 1(b)), and various other oxides. This group has pozzolanic properties and are characterised by SiO 2 + Al 2 O 3 + Fe 2 O 3 > 70% and CaO < 10% (Sambor and Szymanek, 2014). Particle size analysis was shown for volume median diameter (d50) of about 33.3 μm, while (d10) and (d90) were 3.7 and 91.6 μm, respectively.…”

Section: Fly Ash (Fa)mentioning

confidence: 98%

“…The share of dust and silt fractions determines filtrating and dusting properties. In gravel and sand fractions, irregular-forms, crumbs and conglomerates prevail; while in dust and silt fractions, regular smoothed particles are more common (Sambor and Szymanek, 2014). The small pore functional surface of FA was analysed non-destructively at all stages of the production process with confocal 3D microscope solutions.…”

Section: Fly Ash (Fa)mentioning

confidence: 99%

See 1 more Smart Citation

Characterisation and utilisation of solid waste from coal combustion to modelling of sorption equilibrium in a bi-component system metal-dye

Sočo

Kalembkiewicz

2020

Waste Manag Res

View full text Add to dashboard Cite

It was found that the chemical enhancement of fly ash from coal combustion by tetrabutylammonium bromide treatment yields an effective and economically feasible material for the treatment of chromium and basic dye Rhodamine B containing effluents. Characterisation of coal fly ash and treatment with tetrabutylammonium bromide were done by using a Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, confocal three-dimensional microscope, X-ray diffraction and laser particle sizer. The studies of equilibrium in a bi-component system by means of extended Langmuir, extended Langmuir–Freundlich and Jain–Snoeyink models were analysed. The estimation of parameters of sorption isotherms in a bi-component system metal-dye has shown that the best-of-fit calculated values of experimental data for both sorbates have been the Jain–Snoeyink model and the extended Langmuir model, but only in the case of a Rhodamine B. The maximum monolayer adsorption capacity of the fly ash–tetrabutylammonium bromide was found to be 863 mg g−1 and 670 mg g−1 for chromium and Rhodamine B, respectively.

show abstract

Section: Fly Ash (Fa)mentioning

confidence: 98%

Section: Fly Ash (Fa)mentioning

confidence: 99%

Characterisation and utilisation of solid waste from coal combustion to modelling of sorption equilibrium in a bi-component system metal-dye

Sočo

Kalembkiewicz

2020

Waste Manag Res

View full text Add to dashboard Cite

show abstract

“…This is generally physical and chemical composition regarding volatile solids, total solids, C/N ratio as well as elemental analysis for carbon, nitrogen, hydrogen, and sulfur [71,72]. During substrate characterization, the place (source) where the substrate was collected is vital, as waste chemical content is affected by many factors, such as weather conditions and the type of soil where the original substances were grown [73,74]. Physical and chemical compositions depend on the type of substrate, for example, carbohydrates have carbon and hydrogen while proteins and lipids have nitrogen as part of their composition [75,76].…”

Section: Substrate Typementioning

confidence: 99%

An Overview of Biogas Production from Anaerobic Digestion and the Possibility of Using Sugarcane Wastewater and Municipal Solid Waste in a South African Context

Tshemese

Deenadayalu

Linganiso

et al. 2023

ASI

View full text Add to dashboard Cite

Bioenergy production from waste is one of the emerging and viable routes from renewable resources (in addition to wind and solar energy). Many developing countries can benefit from this as they are trying to solve the large amounts of unattended garbage in landfills. This waste comes in either liquid (wastewater and oil) or solid (food and agricultural residues) form. Waste has negative impacts on the environment and, consequently, any form of life that exists therein. One way of solving this waste issue is through its usage as a resource for producing valuable products, such as biofuels, thus, creating a circular economy, which is in line with the United Nations (UN) Sustainable Development Goals (SDGs) 5, 7, 8, 9, and 13. Biofuel in the form of biogas can be produced from feedstocks, such as industrial wastewater and municipal effluent, as well as organic solid waste in a process called anaerobic digestion. The feedstock can be used as an individual substrate for anaerobic digestion or co-digested with two other substrates. Research advancements have shown that the anaerobic digestion of two or more substrates produces higher biogas yields as compared to their single substrates’ counterparts. The objective of this review was to look at the anaerobic digestion process and to provide information on the potential of biogas production through the co-digestion of sugarcane processing wastewater and municipal solid waste. The study deduced that sugar wastewater and municipal solid waste can be considered good substrates for biogas production in SA due to their enormous availability and the potential to turn their negative impacts into value addition. Biogas production is a feasible alternative, among others, to boost the country from the current energy issues.

show abstract

“…The pozzolanic reactions were also noted. Sambor and Szymanek [ 19 ] analyzed almost 300 samples from the ash stockpile at a depth of 0–2.5 m exposed to the weather and found that the pH of the core borehole rose with its increasing depth, which resulted in alkaline reactions that promoted the leaching of chemical compounds into the stockpile. Several other works [ 20 , 21 ] indicate changes in the surface morphology of the deposited fly ash particles, namely the surface dissolution and the formation of new phases (secondary phases).…”

Section: Introductionmentioning

confidence: 99%

A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash

et al. 2022

View full text Add to dashboard Cite

The article describes chemical and also selected physical properties of ponded high temperature fly ash (FA) and bottom ash (BA) from a Mělník lignite power plant located in the Czech Republic. The research was carried out on samples obtained from drills with a depth of up to 54 m and the age of the samples retrieved from the lowest layers of the stockpile dating back to 1960. At the same time, a comparison was made with fresh fly ash and fresh bottom ash obtained from the identical power plant. The study analyzed a total of 98 stockpile samples. The properties selected were studied across the entire stockpile, namely moisture content, specific density, specific surface, carbon content, elemental and phase composition, pH, electrical conductivity and leachability. SEM analyses were also performed. The performed measurements of chemical properties proved the chemical stability of the material even after several decades of storage in the stockpile. The largest changes are evident in the results of the analyses related to the leachability of SO3, Cl− and F−. In contrast, the pH does not change significantly, and the composition is pH neutral or alkaline. Regarding ponded BA, particle disintegration was noted depending on the increasing core borehole depth.

show abstract

Analysis of the Distribution of Chemical Compounds from Fly Ash Exposed to Weather Conditions

Cited by 4 publications

References 3 publications

Characterisation and utilisation of solid waste from coal combustion to modelling of sorption equilibrium in a bi-component system metal-dye

Characterisation and utilisation of solid waste from coal combustion to modelling of sorption equilibrium in a bi-component system metal-dye

An Overview of Biogas Production from Anaerobic Digestion and the Possibility of Using Sugarcane Wastewater and Municipal Solid Waste in a South African Context

A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash

Contact Info

Product

Resources

About