Amelioration of Soil Acidity with Class-C Fly Ash: A Field Study

2006 ◽  
pp. 190-194 ◽  
Author(s):  
Maxim J. Schlossberg ◽  
F. Clint Waltz ◽  
William P. Miller
Keyword(s):  
Fly Ash ◽  
Field Study ◽  
Soil Acidity ◽  
Class C ◽  
Amelioration Of Soil Acidity

Characterization of Coal Fly Ash, Bottom Ash and their Possibilities as Catalysts for Biodiesel Production

2021 ◽  
Vol 904 ◽  
pp. 413-418
Author(s):  
Wilasinee Kingkam ◽  
Sasikarn Nuchdang ◽  
Dussadee Rattanaphra
Keyword(s):  
Fly Ash ◽  
Palm Oil ◽  
Power Plants ◽  
Coal Fly Ash ◽  
Bottom Ash ◽  
Biodiesel Production ◽  
Catalyst Loading ◽  
Free Lime ◽  
Operation Conditions ◽  
Class C

Coal fly ash (CFA) and bottom ash (BA) obtained from coal fired power plants in Thailand and local supplier were characterized using XRF, XRD and N2 adsorption-desorption techniques. Their possibilities for conversion of palm oil into biodiesel were investigated. Selected CFA was also modified with lanthanum (La) at different La loading and the influence of La loading on biodiesel conversion was evaluated. The resulted showed that the Class C CFA as contained large amount of CaO (free lime) could catalyze the transesterification to achieve the highest FAME content of 89% under the operation conditions; the reaction temperature of 200 °C, the reaction pressure of 39 bars, the catalyst loading of 5 wt% of oil, the molar of oil to methanol of 1:30 and the stirring speed of 600 rpm for 5 h. The addition of La on the Class C CFA had a negative effect on conversion of palm oil. The FAME content decreased gradually from 89 to 62% with increasing La loading from 0 to 1 wt%.

The ratio of alkali modulus in strength development of class c fly ash geopolymer mortar

2021 ◽  
Author(s):  
Arie Wardhono ◽  
Bambang Sabariman ◽  
M. Imaduddin ◽  
M. Firmansyah Sofianto ◽  
Ninik W. Hidajati ◽  
...  
Keyword(s):  
Fly Ash ◽  
Strength Development ◽  
Class C

Sulphur Dioxide Emissions during the Firing of Ceramic Bodies Based on Class C Fly Ash

2019 ◽  
Vol 296 ◽  
pp. 149-154
Author(s):  
Radomír Sokolář ◽  
Martin Nguyen
Keyword(s):  
Fly Ash ◽  
Sulphur Dioxide ◽  
Power Plants ◽  
Building Materials ◽  
Porous Ceramic ◽  
Mineralogical Composition ◽  
High Volume ◽  
Ceramic Tiles ◽  
Sulphur Dioxide Emissions ◽  
Class C

Fluid fuel combustion technology in coal-fired power plants is very popular in the Czech Republic, resulting in a relatively high production of a specific by-product - fluidized fly ash (class C according to ASTM definition), which differs from the classical high-temperature fly ash in mineralogical composition with a high sulphur content of anhydrite CaSO4. Fluidized ash is not yet used in the production of fired building materials, where it could be used as a source of calcium oxide (for example, the production of porous ceramic tiles). However, high volume of sulphur dioxide emissions during the re-firing of fluidized fly ash in ceramic raw materials mixtures has been solved. The aim of the paper is definition of temperature ranges of anhydrite decomposition (formation of SO2 emission) from pure class C (fluidized) fly ashes from different sources (power plants) depending on granulometry of fly ash especially.

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