A multifunctional air pollution reduction device includes a tool and a multifunctional pollutant remover. The multifunctional pollutant remover is adjacent to or integrated with the tool. The multifunctional pollutant remover can not only reduce air pollution, but also help reduce one or more of the following problems when using the tools: noise, vibration and/or slip.

Provided is a food waste disposer. The food waste disposer according to an embodiment of the disclosure includes: a housing; a grinder detachably installed inside the housing and configured to grind food waste accommodated therein; and a deodorizer positioned to a side of the grinder, and configured to suck a smell generated from the grinder and discharge the smell to outside of the housing, wherein the grinder includes: a grinding case; a rotating grinder including a plurality of blades rotatably installed at different heights inside the grinding case; and a wall grinder including a protrusion protruding inward from the grinding case at a different height from the plurality of blades, the wall grinder detachably installed on a side wall of the grinding case.

Some embodiments of the disclosure correspond to, for example, a method for controlling a scrubber containing an adsorbent. The scrubber may be configured to cycle between scrubbing at least one pollutant/gas from a stream of gases with the pollutant/gas being adsorbed onto the adsorbent, and regenerating at least some of the adsorbent and thereby purging at least some of the one pollutant and/or first gas from the adsorbent via a regeneration gas flow. The method may include flowing a stream of gases through the scrubber, the scrubber including the adsorbent and adsorbing at least some of the one pollutant/gas from the stream of gases onto the adsorbent during an adsorption phase over a first time period. The method may also include purging at least a portion of the one pollutant/gas from the adsorbent during a regeneration phase over a second time period with a regeneration gas flow, and cycling therebetween.

A display device of a vehicle on which a CO.sub.2 recovery device is mounted, the CO.sub.2 recovery device through which gas circulates recovering carbon dioxide from the gas, the display device includes: a controller configured to control the vehicle, the controller including a recovery state determination unit configured to determine a recovery amount or a recovery state of the carbon dioxide recovered by the CO.sub.2 recovery device and an image data creation unit configured to create image data corresponding to the recovery amount or the recovery state detected by the recovery state determination unit; and a display screen configured to receive the image data and display an image corresponding to the image data, wherein the image data and the image vary depending on the recovery amount or the recovery state.

The present invention provides a new method for fixing carbon dioxide. The method for fixing carbon dioxide of the present invention, includes: a contact step of bringing a mixed liquid containing sodium hydroxide and further containing at least one of a chloride of a Group 2 element or a chloride of a divalent metal element into contact with a gas containing carbon dioxide, wherein in the contact step, the mixed liquid and the gas are brought into contact with each other by feeding the gas into the mixed liquid, a concentration of the sodium hydroxide in the mixed liquid is 0.01 N or more and 0.2 N or less, and in the contact step, the feeding is performed by a motor-driven pump, and the motor is driven by utilizing power generated by photovoltaic power generation.

Air filter media comprising at least one active bead layer comprises an antistatic agent and polyethylenimine coated polymeric beads that can provide better formaldehyde abatement properties than incumbent activated carbon filters and can be prepared by using existing processing facilities for manufacture of incumbent activated carbon filters.

A fluid separation apparatus comprising a fluid separation membrane is provided. The fluid separation apparatus comprises a fluid separation membrane extending in one direction and having a cross-section with a closed curve shape, wherein the fluid separation membrane has a thickness of 0.1 mm to 2 mm, and an outer diameter of 60 mm to 360 mm when the cross-section is adjusted to be circular.

An ozone purification catalyst, and a preparation method therefor and an application thereof are provided. The catalyst coating uses macroporous, high specific surface and CeO.sub.2 and/or La.sub.2O.sub.3 modified Al.sub.2O.sub.3 as the carrier material, and Mn and/or Pd as the active component. The preparation method is to prepare the Al.sub.2O.sub.3-based material by a sol-gel method, and then to load the active components on the carrier material, and to dry, calcinate and solidify to obtain the ozone purification catalyst. The catalysts as prepared shows a fast and efficient purification of ozone. The complete conversion temperature covers a wide range of temperature. The catalyst has excellent texture performance, high specific surface area and large pore volume, which is beneficial to ozone purification when the car is running at high speed. The particle sizes and colors of the catalyst can be modified according to various requirements. According to the actual application, it can be coated on the radiator fins of automobile water tanks, and any place where coating is allowed in public areas such as urban bus stations, stop signs, kiosks, roadside guardrails, or exterior walls of buildings that is in contact with outdoor air.

Systems for separating and concentrating CO.sub.2 from air or a gas include a vortex tube designed for separating and concentrating CO.sub.2 from a gaseous input stream. The vortex tube has an operating design pressure of between 105 psi and 280 psi above atmospheric pressure and produces a concentrated CO.sub.2 outlet stream. The concentrated CO.sub.2 outlet stream is in fluid connection with a conversion system capable of converting the separated CO.sub.2 into another chemical compound.

A porous sorbent ceramic product includes a three-dimensional structure having an electrically conductive ceramic material, wherein the conductive ceramic material has an open cell structure with a plurality of intra-material pores, a sorbent additive primarily present in the intra-material pores of the conductive ceramic material for adsorption of a gas, and at least two electrodes in electrical communication with the conductive ceramic material.