نتایج جستجو برای: anhydrite

تعداد نتایج: 404  

Journal: :Precambrian Research 2021

Over the course of Earth’s history, marine sulfate concentrations have been increasing in response to long-term atmospheric oxygenation. In contrast modern oceans, where abundant precipitates hot oceanic crust as anhydrite, Precambrian oceans contained much less (~0–10 mM) sulfate, so that submarine hydrothermal systems were comparatively poor anhydrite. As a step towards exploring role chemica...

Journal: :The Philippine journal of science 2023

Mineral scaling constitutes a major problem in geothermal fields. It imposes adverse impacts on the performance of power plant as mineral precipitates and clogs facilities, affecting steam production. This paper identifies processes leading to formation calcite, pyrite, anhydrite scales Well-1 located at Matalibong sector, one production sectors Tiwi Geothermal Field, Albay, Philippines, using ...

Journal: :Separations 2022

This study analyses the concept of a novel multi-crystallization system to achieve zero liquid discharge (ZLD) for desalination plants using an innovative heat recovery consisting transfer fluid and compressor reduce energy consumption. The main focus is recover water separately extract salts from seawater brines with high purity, including calcite, anhydrite, sodium chloride, epsomite, which c...

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1972

Journal: :Geochimica et Cosmochimica Acta 2022

Sulfur is a key element in terrestrial magmatic processes yet its geochemical behavior remains one of the most difficult to model due heterovalent chemistry. The maximum amount sulfur silicate melt can dissolve before saturating with sulfide (e.g., pyrrhotite) or sulfate anhydrite) changes redox state system and has important implications for budget system. Several empirical models have been de...

Journal: :Rock Mechanics and Rock Engineering 2021

Abstract Safe Underground Gas Storage (UGS) can be achieved in artificial, salt caverns to meet fluctuations energy demand by providing adequate knowledge on rock when subjected similar cyclic conditions. In this study, we performed mechanical tests five samples with different types and amounts of second-phase mineral content. A confining pressure 25 MPa was applied, whilst the axial stress cyc...

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