Brine

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

Operating Conditions for Lithium Recovery from Natural Brines

Abstract: Lithium recovery from natural brine incontestably requires the optimization of the parameters which influence such a process This process consists of trapping lithium ions by a gel of aluminum hydroxide prepared under the action of a strong base Studied parameters are molar ratio [Al]/[Li], stirring time, reaction temperature and apparent pH A systematic study was carried out varying only one parameter at a time This procedure makes it possible to fix the studied parameters in order to recover maximum Li+ This work is done first on synthetic brines, and then it was considered convenient to check the obtained result using natural brine and an equivalent synthetic brine Some differences related to lithium yield are established between the two considered brines This is due in our opinion to the impurities contained in the natural brine, especially magnesium and boron

Process for removing silica in heavy oil recovery

Abstract: A process for recovery oil includes recovering an oil/water mixture from an oil well. Thereafter, the method includes separating oil from the oil/water mixture to produce an oil product and produced water having dissolved silica therein. The produced water is directed to an evaporator and produces steam and a concentrated brine. The method or process entails mixing a precipitant or crystallizing reagent with the produced water or the concentrated brine and causing the silica to precipitate from the produced water or the concentrated brine. Steam produced by the evaporator is condensed to form a distillate which is directed to steam generator. At the steam generator the distillate is heated to produce steam which is injected into an injection well, giving rise to the formation of the oil/water mixture.

Suppressing Salt Transport through Composite Pervaporation Membranes for Brine Desalination

Abstract: Pervaporation membranes have gained renewed interest in challenging feedwaters desalination, such as reverse osmosis (RO) concentrated brine wastewater. In this study, composite polyvinyl alcohol (PVA)/polyvinylidene fluoride (PVDF) pervaporation membranes were prepared for brine treatment. The composite membrane was firstly studied by adjusting the cross-linking density of PVA by glutaraldehyde: the membrane with higher cross-linking density exhibited much higher salt rejection efficiency for long-term operation. A trace of salt on the permeate side was found to diffuse through the membrane in the form of hydrated ions, following solution-diffusion mechanism. To further suppress the salt transport and achieve long-term stable operation, graphene oxide (GO) was incorporated into the PVA layer: the addition of GO had minor effects on water permeation but significantly suppressed the salt passage, compared to the pure PVA/PVDF membranes. In terms of brine wastewater containing organic/inorganic foulant, improved anti-fouling performance was also observed with GO-containing membranes. Furthermore, the highest flux of 28 L/m2h was obtained for the membrane with 0.1 wt. % of GO using 100 g/L NaCl as the feed at 65 °C by optimising the pervaporation rig, with permeate conductivity below 1.2 µS/cm over 24 h (equivalent to a salt rejection of >99.99%).

Velocity and resistivity changes during freeze-thaw cycles in Berea sandstone

Abstract: We report on simultaneous measurements of resistivity, compressional ( Vp ) , and shear ( Vs ) velocities made during the temperature cycling of Berea sandstone while at elevated pressure. Temperatures were cycled through the freezing point of the saturating brine. The responses of resistivity and velocities are in phase but are asymmetrical as the brine freezes and thaws. Limited freezing causes no discernible damage to the core. Free water is present below the nominal freezing point of the brine. Vp , Vs , and resistivity change by 16%, 24%, and 500%, respectively, over the temperature range of −4°C to +6°C at 6.9 MPa confining pressure.

Effect of brine salinity on CO2 plume migration and trapping capacity in deep saline aquifers

Abstract: CO2 migration and storage capacity are highly affected by various parameters (eg reservoir temperature, vertical to horizontal permeability ratio, cap rock properties, aquifer depth and the reservoir heterogeneity) One of these parameters, which has received little attention, is brine salinity Although brine salinity has been well demonstrated previously as a factor affecting rock wettability (ie higher brine salinity leads to more CO2-wet rocks), its effect on the CO2 storage process has not been addressed effectively Thus, we developed a three-dimensional homogeneous reservoir model to simulate the behaviour of a CO2 plume in a deep saline aquifer using five different salinities (ranging from 2000 to 200 000 ppm) and have predicted associated CO2 migration patterns and trapping capacities CO2 was injected at a depth of 1408 m for a period of 1 year at a rate of 1 Mt year–1 and then stored for the next 100 years The results clearly indicate that 100 years after the injection of CO2 has stopped, the salinity has a significant effect on the CO2 migration distance and the amount of mobile, residual and dissolved CO2 First, the results show that higher brine salinity leads to an increase in CO2 mobility and CO2 migration distance, but reduces the amount of residually trapped CO2 Furthermore, high brine salinity leads to reduced dissolution trapping Thus, we conclude that less-saline aquifers are preferable CO2 sinks