Brine

About: Brine is a research topic. Over the lifetime, 6542 publications have been published within this topic receiving 76741 citations.

Basalt-H2-brine wettability at geo-storage conditions: Implication for hydrogen storage in basaltic formations

Abstract: Among all gas geo-storage sites, basaltic formations have attracted limited attentions in recent years, specially for large-scale storage of CO2. However, the suitability of the basaltic formations for large-scale H2 storage is completely unknown. Wettability of these geological formations is an important parameter for gas geo-storage process as it determines the capacity of gas to spread throughout the pore matrix. To comprehend the wetting characteristics of natural and ideal basaltic rocks in geological conditions, we have measured the basalt-H2-brine contact angles with and without presence of organics under various physio-thermal conditions (5–20 MPa and 308–343 K). Further, H2 column heights which can be safely stored in basaltic formations were calculated based on the contact angle experimental data. Moreover, acquired hydrogen wettability data was compared with that of CO2 for validation purposes. The results showed that the basalt-H2-brine system was strongly water-wet at lower pressures (5 and 10 MPa), but it turned to weakly water-wet at higher pressures (15 and 20 MPa). The increase in temperature and organic acid concentrations also showed negative effect so that basalt-H2-brine system completely turned to intermediate-wet. The H2 column height calculations have suggested that unlike CO2 which may show leakage above depth of 1100 m, H2 could be safely trapped in basaltic formation even up to 2000 m. The presented data in this work is highly crucial, which will aid in the successful implementation of H2 storage in basaltic formations.

Salt extraction process and device

Abstract: A process is disclosed for extracting salt from brine (2) contained in at least one open evaporation basin (1). At least part of the brine (2) is heated in a heating unit (4) located outside the evaporation basin and returned to the evaporation basin (2). The heating unit is driven by waste heat from a recooling industrial plant. According to this process, climatic values and the degree of recooling are measured and evaluated in a control unit. At least part of the heated brine and some non-heated brine are sprayed by a spraying device (6) of the evaporation basin(s) (2). The amount of sprayed brine is regulated by the control unit depending on the measured data.

Production of highly pure lithium chloride from impure brines

Abstract: Highly pure lithium chloride suitable for use in production of lithium metal by electrolysis is obtained directly from impure natural or other lithium chloride brines by an integrated process in which the brine is first concentrated by solar energy to a lithium chloride concentration of about 3%, after which the brine is treated with lime and calcium chloride to convert such impurities as boron, magnesium and sulfate to a calcium borate hydrate, magnesium hydroxide and calcium sulfate dihydrate, respectively, and separating the precipitated calcium sulfate dihydrate from the brine. The brine is then further concentrated to 40% or more lithium chloride by means of solar or other energy, during which concentration step the calcium borate hydrate, magnesium hydroxide and calcium sulfate dihydrate precipitate from the brine. The highly concentrated brine is subjected to evaporation at a temperature above 101° C. to produce anhydrous lithium chloride which is further heated to a temperature of 200° C. or more, followed by extraction of the lithium chloride with isopropanol. After removal of solvent a highly pure lithium chloride product is obtained.