Physico-Chemical Properties of Fly Ash Amended Soils and their Impact on Potato Crop

2015 ◽  
Vol 5 (2) ◽  
pp. 87 ◽  
Author(s):  
Deepali Tomar ◽  
Abrar A. Khan ◽  
Safiuddin
Keyword(s):  
Fly Ash ◽  
Potato Crop ◽  
Chemical Properties ◽  
Amended Soils ◽  
Physico Chemical

Physico-chemical properties and microbial responses in biochar-amended soils: Mechanisms and future directions

2015 ◽  
Vol 206 ◽  
pp. 46-59 ◽  
Author(s):  
Shamim Gul ◽  
Joann K. Whalen ◽  
Ben W. Thomas ◽  
Vanita Sachdeva ◽  
Hongyuan Deng
Keyword(s):  
Chemical Properties ◽  
Future Directions ◽  
Amended Soils ◽  
Physico Chemical ◽  
Microbial Responses

scholarly journals The Use of Borax in Deterring Flash Setting of High Calcium Fly Ash Based Geopolymer

2016 ◽  
Vol 857 ◽  
pp. 416-420 ◽  
Author(s):  
Antoni ◽  
Stephen Wibiatma Wijaya ◽  
Juan Satria ◽  
Agung Sugiarto ◽  
Djwantoro Hardjito
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Fly Ash ◽  
Chemical Composition ◽  
Setting Time ◽  
Chemical Properties ◽  
Physico Chemical ◽  
High Calcium ◽  
High Calcium Fly Ash ◽  
Positive Effect

Geopolymer that was made with high CaO content fly ash was found to have higher compressive strength than the low CaO fly ash, using the same mixture composition. This effect could be due to the physico-chemical properties of the fly ash, in respect to its particle size or the chemical composition. Although it was not widely published, the occurrence of flash setting of geopolymer was known to occur when using high CaO content fly ash as the precursor. Geopolymer paste may solidify within minutes after the addition of alkali activators, making it very difficult to cast in big volume. This paper investigate the effect of borax addition to the high calcium fly ash-based geopolymer mixture to reduce the occurrence of flash setting. It was found that the setting time can be extended significantly, with the addition of 5% borax, by mass, of fly ash. The addition of borax also have positive effect on increasing the compressive strength of geopolymer.

scholarly journals X type zeolitic materials synthesized from fly ash using hydrothermal and low-temperature methods

2010 ◽  
Vol 7 (2) ◽  
pp. 025-034
Author(s):  
Wojciech Franus
Keyword(s):  
Fly Ash ◽  
Low Temperature ◽  
Chemical Properties ◽  
Mineralogical Composition ◽  
Synthesis Methods ◽  
Practical Application ◽  
Low Temperature Synthesis ◽  
Alkaline Reaction ◽  
Physico Chemical ◽  
Zeolitic Material

This study presents the results of experiments dealing with the possibility of transforming F class fly ash into a zeolitic material. Two types of synthesis methods were used in the research: hydrothermal and low-temperature synthesis. As a result of alkaline reaction of fly ash with NaOH, all experimental cases yielded zeolitic material which is rich in Na-X phase. The mineralogical composition as well as the physico-chemical properties in Na-X phase was obtained. The mineralogical composition as well as the physico-chemical properties of the obtained material are explored and the feasibility of practical application is shown.

scholarly journals Suitability and characteristics of combustion residues from renewable power plants for subbase aggregate materials, in Thailand

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2264-2278
Author(s):  
Thitipone Suwunwong ◽  
Sutthida Boonsamran ◽  
Kanchana Watla-iad ◽  
Patcharanan Choto ◽  
Nuttachat Wisittipanit ◽  
...  
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Bottom Ash ◽  
Chemical Properties ◽  
Road Construction ◽  
Lateritic Soil ◽  
Aluminum Oxides ◽  
Renewable Power ◽  
Physico Chemical ◽  
Pozzolanic Properties

Physico-chemical properties and the environmental impacts were studied relative to the leaching of rubber fly ash and bottom ash. The pozzolanic properties of fly ash and bottom ash were confirmed by the chemical composition, including silicon oxides, calcium oxides, and aluminum oxides. The geo-technical characteristics of rubber wood fly ash and bottom ash, i.e., modified compaction, plasticity, and the soaked California Bearing Ratio, were evaluated to assess the feasibility of fly ash or bottom ash mixed with lateritic soil as aggregate materials for the subbase in road construction in order to optimize the replacement of lateritic soil by fly ash or bottom ash. The leachates from rubber fly ash and bottom ash did not exceed standard thresholds. The measured characteristics of fly ash or bottom ash mixed with lateritic soil were in good alignment with the effective engineering thresholds. Recommendations were developed for safe reuse of byproducts from rubber renewable power plant in subbase road construction.

scholarly journals PHYSICO-CHEMICAL PROPERTIES OF BRICK KILN DUST AMENDED SOILS AND THEIR EFFECT ON SOLANUM TUBEROSUM

2013 ◽  
Vol 18 ◽  
pp. 17-24
Author(s):  
Deepali Tomar ◽  
Abrar A. Khan
Keyword(s):  
Solanum Tuberosum ◽  
Pore Space ◽  
Potato Crop ◽  
Nitrogen Concentration ◽  
Chemical Properties ◽  
Growth Yield ◽  
Brick Kiln ◽  
Physico Chemical ◽  
Phosphorus And Potassium ◽  
Kiln Dust

The study was conducted to analyze the physico-chemical properties of various levels of brick kiln dust in soil application (0, 5, 10, 15, 20, 25, 30, 40 and 50%), before planting and after harvesting of potato (Solanum tuberosum) crop and to observe their impact on various parameters of potato plant. The pH, EC, CEC, WHC, pore space, sulphate, chloride, phosphorus, magnesium, zinc, manganese and boron increased at all the levels of brick kiln dust, while, nitrogen and potassium decreased at all the levels before planting of potato crop. After harvesting of potato crop all physico-chemical properties were still greater than control but less than pre-planting of potato, except P and Mg which decreased gradually upto 30%; and K as well as Mn upto 40%, and then they increased in subsequent levels. While N was recorded only in control and at 50% treatment. Application of brick kiln dust in soil from 5% to 40% was found beneficial for plant growth, yield, biomass, photosynthetic pigments, carbohydrate contents, and phosphorus and potassium concentrations of plants and the highest increase in above parameters was recorded at 25% level. At 50% level, there was marked reduction in all these parameters. However, nitrogen concentration of plants and protein content in tubers decreased gradually as levels of kiln dust were increased.DOI: http://dx.doi.org/10.3126/eco.v18i0.9394Ecoprint: An International Journal of EcologyVol. 18, 2011 Page: Uploaded date: 12/20/2013 

scholarly journals Pozzolanic Activity of Fly Ash

1970 ◽  
Vol 45 (4) ◽  
pp. 303-308 ◽  
Author(s):  
KN Farooque ◽  
Z Yeasmin ◽  
S Alam ◽  
AMS Alam ◽  
M Zaman
Keyword(s):  
Fly Ash ◽  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Rice Husk Ash ◽  
Chemical Properties ◽  
Conductivity Measurement ◽  
Pozzolanic Activity ◽  
Insoluble Residue ◽  
Electrical Conductivity Measurement ◽  
Physico Chemical

Various physico-chemical properties such as particle size distribution, specific gravity, specific surface area, chemical composition, solubility of Fly Ash (FA) in NaOH and pozzolanic activity of fly ash towards lime have been investigated. Chemical analysis of FAreveals that the FA used in this present investigation belongs to class F type of fly ash. XRD investigation of FA depicts the presence of crystalline mullite and quartz phases. Pozzolanic activity of fly ash was investigated by pH and electrical conductivity measurement, by determining the amount of calcium reacted with fly ash and by the amount of Insoluble Residue (IR) observed in FA-lime paste. XRD investigation of ash-lime paste identified the Calcium Silicate Hydrate (C-S-H) phase. The results obtained from these studies suggested that fly ash possesses pozzolanic activity. Key words: Pozzolanic activity; Fly ash (FA); Rice husk ash; Ordinary Portland Cement (OPC); Insoluble residue (IR); Calcium hydroxide (CH); Calcium silicate hydrate (C-S-H); Kinetics; XRD. DOI: 10.3329/bjsir.v45i4.7326 Bangladesh J. Sci. Ind. Res. 45(4), 303-308, 2010

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