Results 21 to 30 of about 5,672 (300)

Chemical diffusion of fluorine in melts in the system Na2OAl2O3SiO2 [PDF]

, 1985
The volatilization of fluorine from three melts in the system Na2OAl2O3SiO2 has been investigated at 1 atm pressure and 1200–1400°C. The melts chosen have base compositions corresponding to albite, jadeite and a peraluminous melt with 75 mole % SiO2 ...
Scarfe, Christopher M., Dingwell, Donald B.   +1 more
core   +1 more source

Biogeochemistry of Household Dust Samples Collected from Private Homes of a Portuguese Industrial City

Geosciences, 2020
The main objectives of the present study were to (i) investigate the effects of mineralogy and solid-phase distribution on element bioaccessibility and (ii) perform a risk assessment to calculate the risks to human health via the ingestion pathway ...
Amélia P. Marinho-Reis, Cristiana Costa, Fernando Rocha, Mark Cave, Joanna Wragg, Teresa Valente, Amália Sequeira-Braga, Yves Noack   +7 more
doaj   +1 more source

Understanding the biochar's role in ameliorating soil acidity

Journal of Integrative Agriculture, 2019
Extensive acidic soils, which suffer from accelerated soil acidification, are found in southern China. Soil acidity, aluminum toxicity, and nutrient deficiencies severely limited crop productivity in acidic soils.
Ren-yong SHI, Jiu-yu LI, Ni NI, Ren-kou XU   +3 more
doaj   +1 more source

Composite Hydrogels with Included Solid-State Nanoparticles Bearing Anticancer Chemotherapeutics

Gels, 2023
Hydrogels have many useful physicochemical properties which, in combination with their biocompatibility, suggest their application as a drug delivery system for the local and prorogated release of drugs. However, their drug-absorption capacity is limited
Alexandar M. Zhivkov, Trifon T. Popov, Svetlana H. Hristova   +2 more
doaj   +1 more source

K-Based Geopolymer from metakaolin: roles of K/Al ratio and water or steam Curing at different temperatures

Materiales de Construccion, 2016
K-based geopolymer binder was prepared by reacting metakaolin with alkaline solutions having different potassium contents and by water curing at room temperature and 80 °C as well as steam curing at 150 and 180 °C. The phase formation, microstructure and
A. Tawfik, F. Abd El-Raoof, H. Katsuki, K. J.D. MacKenzie, S. Komarneni   +4 more
doaj   +1 more source

Analysis of deposits in superheater tubes at coal-fired thermal power plants by Fourier IR spectroscopy

Известия высших учебных заведений: Проблемы энергетики, 2022
THE PURPOSE. Determination of the qualitative composition of deposits on the inner surface of the superheater tubes of the Aksuskaya GRES and CHPP stations of Aluminum Kazakhstan JSC located in the Republic of Kazakhstan. METHODS.
N. D. Chichirova, A. A. Chichirov, A. Y. Vlasova, A. A. Orlov   +3 more
doaj   +1 more source

Aluminum incorporation into magnesium silicate hydrate (M-S-H)

, 2020
The incorporation of aluminum in magnesium silicate hydrate (M-S-H) phases was investigated. Magnesium (alumino) silicate hydrate (M-(A-)S-H) with Mg/Si ratios equal to 1.1 or 1.7 and Al/Si ranging from 0 to 0.2 were synthetized in batch experiments and ...
Rentsch, Daniel, Pochard, I., Bernard, E., Lothenbach, Barbara, Pochard, Isabelle, Rentsch, D., Bernard, Ellina, Lothenbach, B., Cau-Dit-Coumes, Céline, Cau-Dit-Coumes, C.   +9 more
core   +1 more source

Modelling weathering processes at the catchment scale: The WITCH numerical model [PDF]

, 2006
A numerical model of chemical weathering in soil horizons and underlying bedrock (WITCH) has been coupled to a numerical model of water and carbon cycles in forest ecosystems (ASPECTS) to simulate the concentration of major species within the soil ...
Godderis, Y., Schott, Jacques, François, Louis, Viville, Daniel, Labat, David, Probst, A., Goddéris, Yves, Schott, J., Moncoulon, D., Viville, D., Probst, Anne, Moncoulon, David, Labat, D.   +12 more
core   +1 more source

A Brief Review of Solving Biomass Ash Deposition with Aluminum-silicate Based Additives and Future Perspective of Kaolin

Chemical Engineering Transactions, 2023
Biomass as an abundant “green” renewable and CO2 neutral energy source have captured the entire world attention as a result of worsening energy crisis and environmental problems. Combustion of biomass have huge potentials of producing heat and power in a
Kunmi J. Abioye, Noorfidza Y. Harun, Anwar A. H. Saeed   +2 more
doaj  

Effect of Sewage Sludge Addition on Potassium Release and Ash Transformation during Wheat Straw Combustion

Chemical Engineering Transactions, 2014
Combustion of wheat straw for heat and power production is often challenging due to ash related problems such as fouling deposition and high temperature corrosion.
L. Wang, T. Lovas, E. Houshfar
doaj   +1 more source