Abstract:
PROBLEM TO BE SOLVED: To provide a method of suppressing a growth of a microorganism in a drinking water stored in a metal container, and a method of processing the metal container suitable for a long-term storage of the drinking water including a silver ion-containing biocide. SOLUTION: A method of suppressing a growth of a microorganism in a drinking water stored in a container having a metal surface includes: heating the metal surface about from 480°C (900°F) to 870°C (1,600°F); exposing the metal surface to oxygen during heating to oxidize a potential reducing site in the metal surface; and filling the drinking water including the silver ion in the container. The container having the metal surface is processed for a long-term storage of the drinking water including a silver ion: by heating the metal surface about from 480°C (900°F) to 870°C (1,600°F), thereby exposing the metal surface to oxygen in order to oxidize an electropositive metal in the metal surface; or by processing the metal surface using an aqueous solution containing an oxidant in order to oxidize the potential reducing site in the metal surface. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a carbon dioxide removing system working at a constant temperature and at an ambient temperature. SOLUTION: The CO 2 removing system 10 normally includes a first adsorption bed 12, a second adsorption bed 14, an inflow passage 16, an inlet valve 18, an outflow passage 20, an outlet valve 22, a carbon dioxide passage 24, a carbon dioxide valve 26, a negative pressure source 28 and a controller 30. The first adsorption bed 12 and the second adsorption bed 14 are thermally connected with each other to transfer heat between the beds. Heat extracted from one of the beds is used as energy for regenerating the other bed. Part of the energy required for regenerating the CO 2 removing system 10 is fed through heat transfer between the adsorption bed on the adsorption side and the adsorption bed on the desorption side so that the total electric power required for regenerating the CO 2 removing system 10 is reduced. In one embodiment, the performance of the CO 2 removing system 10 is raised by about 30% by thermally connecting the first adsorption bed 12 and the second adsorption bed 14. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
A regenerable high capacity carbon dioxide (CO2) sorbent is operated to remove substantially all of the CO2 present in either a dry, or a humid environment. The sorbent is an amine compound which is composed predominantly of secondary amine groups, and includes one or more functional nitrile groups. Primary and tertiary amine groups form a minor percent of the sorbent. The reaction product of tetraethylenepentamine (TEPA) and acrylonitrile (AN), which reaction product will be referred to hereinafter as "TEPAN" is a preferred sorbent. The addition of one or more nitrile functional groups to TEPA by reason of the reaction between AN and TEPA converts most of the primary amines in TEPA to secondary amines in TEPAN. We have discovered that the presence of predominantly secondary amines in the sorbent by more than two and one-half times, as compared to a TEPA sorbent bed; and the use of TEPAN as the sorbent bed also significantly reduces amine volatility to low levels which are immeasurable. The sorbent bed of this invention is also easily regenarable.