Ultrasonic coal washing to leach alkali elements from coals.
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TLDR
Ulasonic water-washing and chemical-washing, in comparison with agitation, are studied in order to estimate the intensification of the alkali removal process by sonication.About:
This article is published in Ultrasonics Sonochemistry.The article was published on 2015-11-01 and is currently open access. It has received 26 citations till now. The article focuses on the topics: Fly ash & Fouling.read more
Citations
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Co-hydrothermal carbonization of polyvinyl chloride and moist biomass to remove chlorine and inorganics for clean fuel production
TL;DR: In this paper, the effect of parameters such as the hydrothermal temperature, the residence time and the particle size (PS) of the sawdust on the dechlorination efficiency (DE), the inorganics removal efficiency (RE), and the HHV of hydrochar was studied.
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Hydrothermal carbonization of food waste after oil extraction pre-treatment: Study on hydrochar fuel characteristics, combustion behavior, and removal behavior of sodium and potassium.
Su Hongcai,Zhou Xuanyou,Rendong Zheng,Zhihao Zhou,Yan Zhang,Gaojun Zhu,Caimeng Yu,Dwi Hantoko,Mi Yan +8 more
TL;DR: The results show that the HTC is a promising alternative for conventional technologies for treatment and energy conversion of OEFW and shows high removal rates of sodium and potassium.
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Comparison of ultrasound-assisted and traditional caustic leaching of spent cathode carbon (SCC) from aluminum electrolysis
TL;DR: Benefiting from advantage of the ultrasonication effects, ultrasound-assisted caustic leaching on spent cathode carbon had 55.6% shorter residue time than the traditional process with a higher impurity removal rate.
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A Review of the Application of Ultrasound in Bioleaching and Insights from Sonication in (Bio)Chemical Processes
Shruti Vyas,Yen-Peng Ting +1 more
TL;DR: The application of ultrasound in bio-leaching, termed sonobioleaching is a technique which has been reported to increase the rate and extent of metal extraction as discussed by the authors, however, one of the principal shortcomings is the slow rate of leaching which needs to be addressed.
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Ultrasonic-assisted coal beneficiation: A review.
TL;DR: A critical review of the ultrasound mechanism in enhancing coal demineralization, desulphurization, grindability, slurryability and dewatering is reviewed, which can significantly increase the clean coal yield under the substantial effect of cavitation and streaming.
References
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The sonochemical hot spot
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Fireside slagging, fouling, and high-temperature corrosion of heat-transfer surface due to impurities in steam-raising fuels
TL;DR: An overview of the art of ash deposition while firing coal, the mechanistic approach to the problem, the recent introduction of sophisticated analytical procedures, and modeling of mineral transformations, and ash deposition underway are presented in this paper.
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Underground coal gasification: A new clean coal utilization technique for India
TL;DR: In this article, the potential for UCG in India is studied by comparing the properties of Indian coals with those of coal that are utilized by various UCG trials, which will help to motivate both applied and theoretical research on UCG sites in India and after detailed analysis it will provide basic data to interested industries.
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Combustion and leaching behavior of elements in the Argonne Premium Coal Samples
Robert B. Finkelman,Curtis A. Palmer,M.R. Krasnow,P. J. Aruscavage,G. A. Sellers,F. T. Dulong +5 more
TL;DR: In this article, the effects of combustion and leaching on 30 elements were analyzed using eight Argonne Premium Coal samples and two other coal samples, and the results were used to infer the modes of occurrence of these elements.
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Environmental impact of coal industry and thermal power plants in India.
TL;DR: It will be quite some time before the steps to improve the environmental releases are implemented in older plants and several coal mines due to resource constraints, but some of the recommendations have been implemented, and the situation in the new plants is much better.