Methods, systems, and apparatus, relate to a method for carbon capture from sea water. A first source of sea water into a reverse osmosis chamber. Reverse osmosis is performed on the sea water to produce fresh water and brine. The brine is provided to an electrolyzer. A current is passed through the brine and fresh water, thereby producing a hydroxide solution in a cathode chamber of the electrolyzer. The hydroxide solution is collected and placed into a contacting chamber and new sea water introduced. Precipitates are produced comprising at least calcium carbonate and magnesium carbonate.

An osmotic food production system designed to produce fruits, vegetables, and freshwater from urine or saltwater. In some embodiments the osmotic food production system also produces oxygen. In some embodiments, the osmotic food production system is portable and capable of transporting on a vehicle capable of space travel. Embodiments of the present invention can be used to address the existing problems of food production, waste disposal/utilization, oxygen generation, and water conservation in an efficient way to allow for prolonged space travel or colonization of distant planets and moons.

The present invention discloses a beverage dispenser, having a supply opening adapted for supplying an aqueous liquid from a source of aqueous liquid, wherein the supply opening is couplable to the source of aqueous liquid; a recooling heat exchanger having a heat receiving portion, a recooling inlet and a recooling outlet, wherein the supply opening is coupled with the recooling inlet; a reverse osmosis filter having an inlet for aqueous liquid, a permeate outlet and a concentrate outlet, wherein the recooling outlet of the recooling heat exchanger is connected to the inlet of the reverse osmosis filter; and a cooling device having a cooling portion extracting heat energy from the permeate and a heat dissipation portion dissipating energy to the heat receiving portion of the recooling heat exchanger; wherein the heat dissipation portion of the cooling device is thermally coupled with the heat receiving portion of the recooling heat exchanger; and wherein the cooling portion of the cooling device is thermally coupled with the permeate exiting the permeate outlet of the reverse osmosis filter, wherein the permeate enters the cooling portion by a cooling portion permeate inlet and exits the cooling portion by a cooling portion permeate outlet.

The invention is about a stabilized electromagnetic base liquid, as well as its preparation method and its application in the high-salt wastewater treatment. The raw material components of the electromagnetic base fluid include: 20-30 parts of alkali metal hydroxides(e.g., as sodium hydroxide); 20-30 parts of non-alkali metal (e.g., as silicon or phosphorus); 2-6 parts of ammonia; 31-140 parts of water; after treatment with a direct electrical current the parameters of the stabilized electromagnetic base liquid are: pH value: 12 to 14; oxidation reduction potential value: −1.0 to −1.8 v; with no corrosivity, confirming the presence of stabilized hydrated electrons (e.sub.aq−−). With the stabilized electromagnetic base liquid, the storage problem of the electromagnetic base liquid is solved, and the large-scale application in the industrial field can be realized, thereby achieving a large-scale high-salt wastewater treatment process with low cost, high recovery rate.

Methods and systems of lowering a concentration of divalent cations in lithium-containing brines are described. A method includes diluting saturated salar brine such that sodium chloride concentration is at most about 80% of saturation. The method also includes feeding the diluted salar brine to a high pressure nanofiltration system operating at pressure above about 60 bar effective to form a permeate and a concentrate. The method also includes collecting the permeate having a lower concentration of divalent cations relative to the saturated salar brine.

A system for treating a tetraalkylammonium hydroxide-containing liquid having a high-pressure type reverse osmosis membrane device concentrating a liquid to be treated containing tetraalkylammonium hydroxide at a concentration side, and a line for supplying the concentrated liquid to be treated by the reverse osmosis membrane device to an evaporator further concentrating the concentrated liquid to be treated.

A system for treating a tetraalkylammonium hydroxide-containing liquid having a high-pressure type reverse osmosis membrane device concentrating a liquid to be treated containing tetraalkylammonium hydroxide at a concentration side, and a line for supplying the concentrated liquid to be treated by the reverse osmosis membrane device to an evaporator further concentrating the concentrated liquid to be treated.

A purification method for separating and purifying an organic solvent from a liquid mixture of an organic solvent and water, the organic solvent having a boiling point of more than 100° C. at 1 atm, includes the steps of: passing the liquid mixture through a first ion exchange device; supplying the liquid mixture discharged from the first ion exchange device to a pervaporation device to selectively separate water component; supplying the organic solvent recovered from the concentration side of the pervaporation device to an evaporator to obtain a purified organic solvent; and passing, through the second ion exchange device, a portion of liquid containing the organic solvent and flowing at a first position subsequent to the first ion exchange device. The liquid discharged from the second ion exchange device is returned to a second position which is at a preceding stage of the pervaporation device.

A process for purifying a urea-containing aqueous stream, such as the aqueous stream from the recovery section of a urea plant, comprising a step of removing biuret from the urea-containing stream by reverse osmosis in one or more reverse osmosis stages.

The present disclosure is in the field of ‘pharmacognosy’ and ‘chemistry of natural products’. The present disclosure generally relates to a process of isolation and purification of Biochemical Constituents from algae. The present disclosure particularly relates to a process of isolation and purification of Biochemical Constituents from a biomass of cyanobacteria. The present disclosure provides a process for isolating and extracting phycocyanins, chlorophylls, proteins and polysaccharides from the spirulina biomass.