Introduction: The recent discovery of carbonaterich outcrops in the Nili Fossae region of Mars using data returned by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument [1] as well as indications of 2-3% carbonate in alkaline soils at the Phoenix landing site [2] have brought into question the hypothesis that much of martian history has been dominated by an acidic weath...

In this study, we tried to form the calcareous deposit films by electrodeposition process. The uniform and compact were formed process their crystal structure characteristics analyzed evaluated using various surface analytical techniques. mechanism of formation for could be confirmed role magnesium was verified experiments in artificial natural seawater solutions. highest amount film obtained a...

Magnesium hydroxide Mg(OH)2 nanorods with diameters of 90±10nm and lengths of more than 2μms were prepared by a simple route at ~75oC in ambient air. The approach is based on reaction of magnesium powder and de-ionized water without the use of any harmful, toxic or corrosive reagents. Characterization using X-ray diffraction (XRD) shows single crystalline structure of Mg(O...

This article summarizes long-term degradation mechanisms of cementitious materials in contact with fresh and saline solutions based on a review experimental observations field laboratory studies. In addition, simplified thermodynamic modelling approach was used to calculate the effect solution composition, ranging from river water sea water, intensity leaching kind quantity phases formed at int...

Abstract An analysis was made of the use magnesium-containing materials natural and technogenic origin in complex systems for purification wastewater from mining enterprises heavy metals. The transfer mechanisms dissolved metals into precipitate onto surface sorbent have been theoretically studied. Magnesium-containing minerals water partially undergo hydration, forming an association molecules...

The role of organic ligands on the formation hydrated magnesium carbonates (HMCs) has been remaining unclear. This work reports insights into effects Mg-acetate carbonation brucite including kinetics reaction, precipitation different HMCs, and reaction mechanisms. We found that ligand increases brucite's alter conversion HMCs. A relatively unknown phase (i.e., giorgiosite) precipitates in prese...

This study focuses on the development of carbonated reactive magnesia cement (RMC) concrete formulations involving hydromagnesite (H), magnesite (M) and hydration agent (HA). Partial replacement RMC by H M stimulated formation hydrate carbonate phases. Use increased rate degree hydration, resulting in a bird nest-like structure containing poorly-crystalline brucite. The higher propensity this p...

As an important slurry material for water-based drilling fluids, montmorillonite has been widely used in oil because of its excellent properties such as expansibility, dispersion and suspension, making, cation exchange adsorption. However, at a certain temperature pressure, will transform into illite, chlorite other minerals, changing the fluids. In order to systematically summarize sort out cu...

Elektrodialisis untuk proses recovery nutrien dari urine sangat diminati pada satu dekade terakhir, karena dapat mengkonsentrasikan ion yang menjadi target mendapatkan produk hasil dengan tingkat kemurnian tinggi. Penggunaan magnesium sebagai anoda elektrodialisis saat ini juga mengemuka. Anoda secara efektif menghasilkan struvite tanpa memerlukan tambahan bahan kimia penyesuaian pH larutan dal...

Layered double hydroxides (LDHs) which are one type of layered material promising materials due to some their interesting properties, such as ease synthesis, unique structure, uniform distribution different metal cations in the brucite layer, surface hydroxyl groups, flexible tunability, intercalated anions with interlayer spaces, swelling and high chemical thermal stability, ability intercalat...