The device (1) for bringing a gas and a liquid into contact includes an enclosure (E), first means (5) for introducing into the enclosure and circulating therein a gas stream (G), second means (6) for introducing into the enclosure and circulating therein a liquid stream (L) that circulates inside the enclosure (E) in the same direction as the gas stream (G), and means (4A) for mixing the gas stream (G) and the liquid stream (L). These mixing means (4A) are positioned inside the enclosure (E) in the path of the gas stream and liquid stream and are capable of locally deflecting upward, and/or of locally causing to rise, at least one portion of the gas stream and liquid stream, so as to locally create turbulences in the gas stream and in the liquid stream.

The present disclosure is related to systems and methods for the biological processing of hydrocarbon-containing substances. In particular embodiments, the systems and methods herein relate to pre-digestion of hydrocarbon containing substances and further processing of the same to produce hydrocarbon fuels, fertilizer, and other products.

Provided are methods of using MXene compositions to selectively adsorb analytes such as toxic industrial chemicals, opioids, and nerve agents. Also provided are MXene compositions configured to effect selective adsorption of analytes.

Described is related to nano-structured composite materials for removing harmful chemical air pollutants and odors from the air to prevent people from breathing in disease-causing chemicals and provide them with clean indoor air. The nano-structured composite materials comprise nano-catalysts embedded in the pores of nano-structured substrate materials selected from the group consisting of nano-porous carbon, nano-porous rare earth oxide, nano-porous zeolite, nano-porous alumina and nano-porous silica. The nano-scale synergy of nano-catalysts and nano-structured substrate materials provides effective air filtration materials for the complete trapping and elimination of the full spectrum of chemical air pollutants including both organic and inorganic compounds and odors for indoor spaces, which HEPA or activated carbon filters cannot achieve.

Methods and compositions are described that remove chlorine from a chlorine-containing gas stream. The method includes adding a carbonate salt and optionally a scale inhibitor to a scrubbing liquid in a wet scrubbing system, and contacting the chlorine-containing gas with the scrubbing liquid. The amount of carbonate salt that is added can vary depending on the pH of the scrubbing liquid.

The present disclosure relates to a carrier with high capacity which is capable of adsorbing a chlorine dioxide gas at high concentration and a method of preparing a release kit which is capable of releasing the chlorine dioxide gas at a certain concentration for a long period of time, and more particularly, provides a preparation method of a carrier which is capable of adsorbing a high concentration chlorine dioxide gas at high capacity and capable of maintaining a physically and chemically stable state for a long period of time, the carrier including a silica gel, i.e., an indicator material which may indicate whether or not the chlorine dioxide gas is adsorbed or desorbed, by colors; and the present disclosure provides a method capable of manufacturing a chlorine dioxide gas sterilization device which consists of a release kit enabling the chlorine dioxide gas of a certain concentration to be continuously released from the carrier for a long period of time, an internal configuration of the kit including a well-light shielded sealed container capable of storing the carrier and the indicator, an inner upper part of the sealed container containing an aromatic gel that is capable of suppressing a distinctive smell of chlorine dioxide and immersed in a super absorbent polymer, which is configured so that the release amount and the release duration can be adjusted when adjusting the hole size by forming a hole with a predetermined size in a lid of the sealed container so that the chlorine dioxide gas can be released at a certain concentration from the inside of the sealed container to the outside thereof for a long period of time, and which not only can be subminiaturized by allowing the configuration of the device to become structurally very simple when applying the kit to the sterilization device, but also is more safe and inexpensive by excluding the use of harmful chemical substances, i.e., raw materials required for generating the chlorine dioxide gas. Further, as a carrier according to the present disclosure may be reusable up to five times, the carrier has great advantages in terms of recycling of resources and maintenance costs.

The device (1) for bringing a gas and a liquid into contact includes an enclosure (E), first means (5) for introducing into the enclosure and circulating therein a gas stream (G), second means (6) for introducing into the enclosure and circulating therein a liquid stream (L) that circulates inside the enclosure (E) in the same direction as the gas stream (G), and means (4A) for mixing the gas stream (G) and the liquid stream (L). These mixing means (4A) are positioned inside the enclosure (E) in the path of the gas stream and liquid stream and are capable of locally deflecting upward, and/or of locally causing to rise, at least one portion of the gas stream and liquid stream, so as to locally create turbulences in the gas stream and in the liquid stream.

The present disclosure is related to systems and methods for the biological processing of hydrocarbon-containing substances. In particular embodiments, the systems and methods herein relate to pre-digestion of hydrocarbon containing substances and further processing of the same to produce hydrocarbon fuels, fertilizer, and other products.

Methods and compositions are described that remove chlorine from a chlorine-containing gas stream. The method includes adding a carbonate salt and optionally a scale inhibitor to a scrubbing liquid in a wet scrubbing system, and contacting the chlorine-containing gas with the scrubbing liquid. The amount of carbonate salt that is added can vary depending on the pH of the scrubbing liquid.

An agent for removing a halogen gas, such as chlorine, in a waste gas by means of reduction; a method for producing this agent; a method for removing a halogen gas by use of this agent; and a system for removing a halogen gas. The agent for removing the halogen gas contains at least pseudo-boehmite, that serves as a host material, and a sulfur-containing reducing agent, that serves as a guest material. 1-8% by weight of the reducing agent, in terms of elemental sulfur, based on the total amount of the pseudo-boehmite and sulfur-containing reducing agent is present in the agent. At least one inorganic compound selected from among oxides, carbonates salts and hydrocarbon salts of alkaline earth metal elements, transition metal elements and zinc group elements is additionally contained in the agent as a third component.