Results 21 to 30 of about 57,794 (339)

Observation of the depassivation effect of attrition on magnesium silicates' direct aqueous carbonation products

open access: yesFrontiers in Climate, 2022
The main obstacle to the aqueous carbonation of non-serpentinised magnesium silicates is the formation of surface passivation layers, which severely limits the reaction rate and thus the overall efficiency of the process.
Adrien Dufourny   +5 more
doaj   +1 more source

Fractionation and fluxes of metals and radionuclides during the recycling process of phosphogypsum wastes applied to mineral CO2 sequestration [PDF]

open access: yes, 2015
The industry of phosphoric acid produces a calcium-rich by-product known as phosphogypsum, which is usually stored in large stacks of millions of tons.
Bolívar, Juan Pedro   +6 more
core   +2 more sources

Forced Mineral Carbonation of MgO Nanoparticles Synthesized by Aerosol Methods at Room Temperature

open access: yesNanomaterials, 2023
Magnesium oxide (MgO) has been investigated as a wet mineral carbonation adsorbent due to its relatively low adsorption and regeneration temperatures.
Kyungil Cho   +3 more
doaj   +1 more source

Ca-looping for postcombustion CO2 capture: A comparative analysis on the performances of dolomite and limestone [PDF]

open access: yes, 2015
The low cost and wide availability of natural limestone (CaCO3) is at the basis of the industrial competitiveness of the Ca-looping (CaL) technology for postcombustion CO2 capture as already demonstrated by ~1Mwt scale pilot projects.
Pérez Maqueda, Luis Allan   +2 more
core   +1 more source

Carbonation and Corrosion Problems in Reinforced Concrete Structures

open access: yesBuildings, 2022
Reinforced concrete (RC) has been commonly used as a construction material for decades due to its high compressive strength and moderate tensile strength. However, these two properties of RC are frequently hampered by degradation.
Abdulrahman Fahad Al Fuhaid, Akbar Niaz
doaj   +1 more source

Recent insights into xerogel and aerogel mineral composites for CO 2 mineral sequestration [PDF]

open access: yes, 2011
Supercritically dried composites have already been analysed and proposed as carbon dioxide sequesters. However, the economical and energetic costs of the supercritical drying process had to be re-evaluated, and were eventually found not to enhance the ...
Esquivias Fedriani, Luis María   +2 more
core   +1 more source

CO2 multicyclic capture of pretreated/doped CaO in the Ca-looping process. Theory and experiments [PDF]

open access: yes, 2013
We study in this paper the conversion of CaO-based CO2 sorbents when subjected to repeated carbonation/calcination cycles with a focus on thermally pretreated/doped sorbents.
Perejón Pazo, Antonio   +3 more
core   +1 more source

Carbon Storage in Portland Cement Mortar: Influences of Hydration Stage, Carbonation Time and Aggregate Characteristics

open access: yesClean Technologies, 2021
This study elucidates the effects of the particle size, carbonation time, curing time and pressure on the efficiency of carbon storage in Portland cement mortar.
Luqman Kolawole Abidoye, Diganta B. Das
doaj   +1 more source

Experimental verification of carbonation models used for estimation of reinforced concrete structures durability [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
The subject of the article is a comparison of two types of concrete carbonation models: self-limited carbonation and infinite carbonation. The results of the research on the progress of carbonation during six years of sample exposure in natural ...
D. Stańczak   +3 more
doaj   +1 more source

A practical method for preparing Ca(OH)2 nanodispersions for the consolidation of archaeological calcareous stones [PDF]

open access: yes, 2018
Exposure to atmospheric conditions results in considerable deterioration of calcareous building stones, lime mortars and plasters in archaeological monuments, requiring several conservation treatments.
Caner, Evin, Caner-Saltık, E.N.
core   +1 more source

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