The purification method comprises: a step for placing the laden gas stream in contact with a saline solution stream, the saline solution stream comprising, before placement in contact, at least 300 g/l of salts, at least part of the quantity of volatile organic compound being extracted from the laden gas stream and absorbed by the saline solution stream, the placement in contact step producing a purified gas stream containing a residual quantity of volatile organic compound and a laden saline solution stream; a step for recovering the volatile organic compound, comprising a sub-step for decanting a laden saline solution stream, leading to the separation of a phase containing the volatile organic compound and of the saline solution.

In accordance with some embodiments herein, a filtering product is provided. The filtering product includes titanium dioxide (TiO2), cetyltrimethylammonium bromide (CTAB) and ascorbic acid (C6H8O6). The filtering product may be used for filtering smoke of a water pipe. Alternatively and/or additionally, the filtering product may be used for filtering gas.

A method for obtaining water from ambient air, wherein the method contains at least the following method steps: contacting the ambient air with at least one liquid absorbent for absorbing at least a part of the water contained in the ambient air; conveying an absorbent diluted by the absorbed water to a first heat exchanger; transferring the diluted absorbent into at least one desorption device. Therein, water desorbed in the desorption device is conveyed to the first heat exchanger, wherein cooling of the desorbed water is effected by means of the diluted absorbent by means of the first heat exchanger. Furthermore, disclosed is a device for obtaining water from ambient air.

An apparatus and process are provided for electricity production and high-efficiency trapping of carbon dioxide, using carbon dioxide within combustion exhaust gas and converging technologies associated with a carbon dioxide absorption tower and a generating device using ions which uses a difference in concentration of salinity between seawater and freshwater. It is expected that enhanced electrical energy production efficiency, an effect of reducing costs for the operation of a carbon dioxide trapping process, and electricity production from carbon dioxide, which is a greenhouse gas, can be simultaneously achieved by increasing the difference in concentration using an absorbent for absorbing carbon dioxide.

The innovation uses the disparity between dry and wet conditions of the air, by storing the dryness or wetness in a hygroscopic material. When the surrounding air is drier or wetter than the hygroscopic material, the potential energy difference between moisture in the air and that in the material can be used as a way of transporting heat from the material to the air and vice versa. A simple way this energy can be used is for heating and cooling of a building. For example, a large storage of adsorbing material can be dried in the hot summer, and allowed to re-adsorb water in the cold winter, thus gaining heat that can be used for domestic heating.

Carbon dioxide is separated from a flue gas by scrubbing the gas with an aqueous solution of an amine and a salt, the CO2 is thereafter released from the solution by heating. The scrubbing step is performed with a co-current gravity fed stream of an aqueous solution of the amine and a salt of the gas and solution through an absorption column.

A gas phase polymerization process is described that includes contacting a polymer seed bed with a desiccant. The gas phase polymerization process further includes introducing a polymer seed bed into a gas phase polymerization reactor, contacting the polymer seed bed with a desiccant, and introducing a polymerization catalyst into the gas phase polymerization reactor. Also described is a gas phase polymerization process in accordance with the present disclosure that includes subjecting a polymer seed bed to startup conditions in a gas phase polymerization reactor, monitoring a moisture content of a vapor in contact with the polymer seed bed, and introducing a desiccant into the gas phase polymerization reactor to maintain the moisture content below a desired moisture content, to reduce a moisture content that is above a desired moisture content, or both.

A composition for controlling an ambient humidity within 65%-75%. The composition includes at least one chloride salt and water. The chloride salt includes at least one of NaCl, NH.sub.4Cl, KCl and MgCl.sub.2. The weight percentage of the chloride salt in the humidity control composition is 12%-29.75%. The composition can control the ambient humidity within 65%-75% without the need to pre-adjust the objective space. The composition has a large capacity of moisture absorption and desorption, and can quickly achieve the desired humidity in the objective environment.

The present invention discloses a gas-solid separating method and a gas-solid separating system for simple substance sulphur in sulphur-containing exhaust. The gas-solid separating method for simple substance sulphur in sulphur-containing exhaust comprises the following steps: first, cooling sulphur-containing exhaust at an extremely high speed; then, separating dust; finally, recycling a heavy liquid phase solvent and simple substance sulphur; according to the method disclosed by the present invention, the separating efficiency of the simple substance sulphur is up to 90 percent or above; moreover, the exhaust is further purified, and an environment pollution accident is avoided; in a separating process of the simple substance sulphur, the heavy liquid phase solvent of the simple substance sulphur evaporates to form a gas phase solvent which can be recycled as the liquid phase solvent for reusing through cooling, so that the sulphur removing cost is reduced. The system comprises a quick cooling system, a low-temperature washing and purifying system, a light liquid phase and heavy liquid phase separating system, a washing liquid recycling system and a simple substance sulphur recycling system. The system disclosed by the present invention has the advantages of stability and high efficiency in sulphur-containing exhaust treatment, high simple substance sulphur separating efficiency, energy conservation and environmental protection.

A system and method for the reduction of NOx and CO contaminants using an ion-exchange resin media having lower-valency ions of the transitional metal elements, such as ferrous ions, cuprous ions and/or manganese ions, such that gases containing NOx and/or CO contaminants may be passed over the media so that the contaminants are absorbed by the lower-valency ions of the transitional metal elements, the media configured so that it can be regenerated to remove the NOx and/or CO contaminants. Regeneration includes exposing the media to a heated stream of hydrogen gas or exposing the media to hydrogen ions in an electrochemical cell.