Utilization of coal fly ash and bottom ash as solid sorbents for sulfur dioxide reduction from coal fired power plant: Life cycle assessment and applications

Rathnayake, Mahinsasa; Julnipitawong, Parnthep; Tangtermsirikul, Somnuk; Toochinda, Pisanu

doi:10.1016/j.jclepro.2018.08.204

Cited by 75 publications

(21 citation statements)

References 32 publications

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“…The demand for electricity is also an increasingly prevalent issue, and a thermal power plant is one of the methods to supply electricity. However, coal-fired thermal power plants create an enormous amount of bottom ash and fly ash [12][13][14][15][16][17]. Coal bottom ash (CBA) is an industrial waste produced at the bottom of a coal furnace in coal-fired thermal power plants.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Thermal Properties of High-Strength Concrete Containing CBA Fine Aggregates

Yang

Park

2020

Materials

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The thermal conductivity of concrete is a key factor for efficient energy consumption in concrete buildings because thermal conductivity plays a significant role in heat transfer through concrete walls. This study investigated the effects of replacing fine aggregates with coal bottom ash (CBA) and the influence of curing age on the thermal properties of high-strength concrete with a compressive strength exceeding 60 MPa. The different CBA aggregate contents included 25%, 50%, 75%, and 100%, and different curing ages included 28 and 56 days. For concrete containing CBA fine aggregate, the thermal and mechanical properties, including the unit weight, thermal conductivity, compressive strength, and ultrasonic velocity, were measured. The experimental results reveal that the unit weight and thermal conductivity of the CBA concrete were highly dependent on the CBA content. The unit weight, thermal conductivity, and compressive strength of the concrete decreased as the CBA content increased. Relationships between the thermal conductivity and the unit weight, thermal conductivity and compressive strength of the CBA concrete were proposed in the form of exponential functions. The equations proposed in this study provided predictions that were in good agreement with the test results. In addition, the test results show that there was an approximately linear relationship between the thermal conductivity and ultrasonic velocity of the CBA concrete.

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Section: Introductionmentioning

confidence: 99%

A Study on the Thermal Properties of High-Strength Concrete Containing CBA Fine Aggregates

Yang

Park

2020

Materials

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“…Electricity generation is important for sustainable development as it contributes to several sustainability issues. Several life cycle assessment (LCA) studies already existing in literature, focusing on those developed for the coal power plants 11‐27 to assess the life cycle environmental impacts for electricity generation. Many of these studies have been conducted for hard coal or have not specified the type of coal.…”

Section: Introductionmentioning

confidence: 99%

“…All studies considered global warming potential. Most also considered acidification potential and eutrophication potential except Hirschberg et al 24 Many studies have also been carried out for only lignite power with or without carbon capture unit, 20,21,23,26 as opposed to different electricity generation technologies including hard coal, oil, natural gas, nuclear, hydropower, wind, solar PV. The results of the studies presented in Table 1 are compared to the results obtained in this paper in Section 3.…”

Section: Introductionmentioning

confidence: 99%

Environmental sustainability of electricity generation: Case study of lignite combustion

Türkmen

Deveci

Sağlam

2020

Env Prog and Sustain Energy

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Lignite is one of the most used Turkey's energy sources for electricity generation as there are large lignite reserves in the country. Lignite power plants are one of Turkey's main sources of GHG emissions. Therefore, understanding the environmental sustainability of generating electricity from lignite burning is essential for reducing environmental impacts. This research aims to assess the life cycle environmental impacts from a typical Turkish lignite power plant. In this paper, a system of the electricity from the lignite power plant is presented which covers all the life cycle stages—starting from the lignite mining up to the delivery of electricity to the grid. For this work to generate 1 kWh of generated is defined as the functional unit. The principal conclusion, to be drawn from this LCA of lignite power in Turkey, is that the majority of the emissions mostly originate from lignite burning to and lignite mining stages. The global warming potential associated with electricity generation from lignite power is estimated at 1,290 g CO2 eq./kWh. The results obtained from this study provide a baseline for future scenarios to reduce the environmental impacts from the energy sector and to build a sustainable energy policy.

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“…Their use as adsorbents could be implemented for this purpose and is in line with recent research that seeks alternatives to activated carbon, which is an expensive adsorbent. Currently, the main studies suggest the production of adsorbents from natural clay minerals [17][18][19][20] agricultural waste [21][22][23][24][25][26][27] and industrial activities [28][29][30][31][32][33][34][35][36]. In this scenario, the use of carbonaceous residue (from metal recovery treatment) as adsorbent of dyes from coloured wastewater of textiles manufacturing has been individuated.…”

Section: Introductionmentioning

confidence: 99%

Recycling of Oil Fly Ash in the Adsorption of Dyes From Industrial Wastewater

Primerano

Milazzo

2020

Ecological Chemistry and Engineering S

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AbstractThe use of oil fly ash after the recovery of heavy valuable metals was investigated. More specifically, its use, as an adsorbent of dyes from industrial wastewater, was evaluated. Methylene blue was used as a model compound to study the adsorption capacity of the proposed carbonaceous residue from metal recovery treatments. The effects of contact time, initial dye concentration, and absorbent dose were investigated. The maximum amount of dye was adsorbed after one hour. Moreover, 1-3 g of residues were necessary for the removal of 200-1000 mg dm−3 from 0.050 dm3 of contacted solution. The Langmuir isotherm model was in good agreement with the adsorption equilibrium data, indicating a maximum monolayer saturation capacity of approximately 40 mg/g at 25 °C. High abatement efficiencies (up to 99 %) were obtained, and the adsorbed dye was released almost immediately by re-contacting with water. The adsorption capacity was at least four times lower than that of commercially available active carbon. The double treatment of oil fly ash with deionised water and hydrochloric acid allows for the extraction of over 85 % of the vanadium, iron, and nickel content in the ash. However, the negligible or zero cost of solid residues, otherwise disposed in landfills, indicates their potential as a valid alternative. The use of oil fly ash for both recovery of heavy valuable metals and the subsequent removal of dyes from wastewater suggest a zero-waste process.

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Utilization of coal fly ash and bottom ash as solid sorbents for sulfur dioxide reduction from coal fired power plant: Life cycle assessment and applications

Cited by 75 publications

References 32 publications

A Study on the Thermal Properties of High-Strength Concrete Containing CBA Fine Aggregates

A Study on the Thermal Properties of High-Strength Concrete Containing CBA Fine Aggregates

Environmental sustainability of electricity generation: Case study of lignite combustion

Recycling of Oil Fly Ash in the Adsorption of Dyes From Industrial Wastewater

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