A degasser for at least partially degassing a gas-containing liquid, in particular for a sample separation device, includes a liquid accommodation volume for accommodating the gas-containing liquid during degassing, a negative pressure chamber in which a negative pressure, compared to the liquid accommodation volume, is to be generated, a gas permeable membrane separating the liquid accommodation volume from the negative pressure chamber and arranged so that ultrasound forces at least part of gas of the gas-containing liquid to move through the membrane by a combination of the negative pressure and the ultrasound, and an ultrasound source including an electroactive material and configured for generating ultrasound for actuating the gas-containing liquid and/or the gas permeable membrane.

One aspect of the present invention is a gas treatment method including a step of causing a gas to be treated containing an acidic compound to be absorbed into a treatment solution phase-separated by absorption of the acidic compound, a step of separating the treatment solution, which is phase-separated into a first phase portion having relatively high content of the acidic compound and the second phase portion having relatively low content of the acidic compound as the acidic compound is absorbed, into a first solution mainly containing the first phase portion and a second solution mainly containing the second phase portion, a step of applying deoxygenation treatment to the separated second solution, and a step of heating the first solution together with the second solution to which the deoxygenation treatment is applied so as to release the acidic compound from the first solution and the second solution.

An acoustic rotary liquid processor coupled with high-intensity ultrasonic vibration, rotary stirring, gas purging, and melt surface stabilizing is described. The processor can be used for the synthesis of particulate reinforced composite materials, scavenging dissolved gases in molten materials, and preparation of a slurry containing a small fraction of non-dendritic solid particles for semi-solid material processing.

There is provided a carbon dioxide capture apparatus and a carbon dioxide capture method that capture carbon dioxide in liquid at low cost. A carbon dioxide capture apparatus includes a storage unit including a partition wall separating an atmosphere and an inner space, the storage unit being configured to store liquid in which carbon dioxide is dissolved in the inner space, a vibration transmission unit configured to transmit a vibration of the storage unit or a vibration source disposed near the storage unit to the liquid stored in the storage unit, and an accumulation unit configured to capture and accumulate the carbon dioxide released from the liquid with an aid of the vibration transmitted via the vibration transmission unit.

The present invention relates to a method and a device for the chemical-free determination of the chemical oxygen demand (CODs) in aqueous samples. The object of the invention, to develop a method that compensates for the disadvantages of the standard method and at the same time is at least as good as this, in that it can determine the COD quickly and with a high measurement frequency without chemicals and is cheap and has a low personnel requirement and should be simple to automate, is achieved in that the chemical oxygen demand of aqueous samples is determined by non-specific oxidation of water components at an electrode (11), assisted by (ultra)sound from a sound source (15) in a frequency range in which no significant quantities of oxidative species are formed, i.e. below the cavitation threshold.