Abstract:
The objects of embodiments in the present disclosure are to provide a method capable of recovering two or more amine compounds at the same time from a gas or solution, and also to provide a method capable of analyzing the recovered amines. The amine-recovering method comprises the steps (A) and (B). In the step (A), the gas or solution is brought into contact with a solid adsorbent so that the adsorbent may retain the amines. In the step (B), the amines retained by the adsorbent in the step (A) are eluted out by use of a basic compound-containing organic solvent. The solid adsorbent has a substituent group represented by -SO 3 M (M is H or an alkali metal).
Abstract:
A carbon dioxide absorbent of an embodiment includes a solid resin compound containing a structural unit expressed by the following formula (1). X in the formula (1) is a halogen element.
Abstract:
According to an embodiment, a biodiversity evaluation index calculation apparatus includes a first calculation unit, a second calculation unit, and a third calculation unit. The first calculation unit calculates a vegetation/living-animal coefficient by referring to a vegetation database, the vegetation/living-animal coefficient representing at least one of diversity of plant species and diversity of animal species. The second calculation unit calculates a biodiversity value based on a type of a reserve and the vegetation/living-animal coefficient by referring to a reserve geography database, the biodiversity value representing biodiversity richness. The third calculation unit configured to calculate, for each of a plurality of mines, a biodiversity evaluation index by referring to a mine database, the biodiversity evaluation index representing a mining impact on biodiversity. The third calculation unit calculates the biodiversity evaluation index by adding biodiversity values of regions included in a mining impact range representing a range of an impact of mining on a peripheral environment.
Abstract:
A carbonic acid gas absorbing material on an embodiment includes a liquid carbonic acid gas absorbent and a solid carbonic acid gas absorbent. The liquid carbonic acid gas absorbent is a solution containing a first amine and a solvent. The solid carbonic acid gas absorbent is a second amine of any one among a polyamine, a base material and an amine fixed to the base material, or a polyamine, a base material, and an amine fixed to the base material.
Abstract:
The objects of embodiments in the present disclosure are to provide a method capable of recovering two or more amine compounds at the same time from a gas or solution, and also to provide a method capable of analyzing the recovered amines. The amine-recovering method comprises the steps (A) and (B). In the step (A), the gas or solution is brought into contact with a solid adsorbent so that the adsorbent may retain the amines. In the step (B), the amines retained by the adsorbent in the step (A) are eluted out by use of a basic compound-containing organic solvent. The solid adsorbent has a substituent group represented by -SO 3 M (M is H or an alkali metal).
Abstract:
An acidic gas absorbent having a high acidic gas absorption capacity, that is, a high acidic gas absorption amount and a high acidic gas absorption rate, an acidic gas absorption device, and a method for absorbing an acidic gas, are provided. An acidic gas absorbent containing an azabicyclo compound and a primary or secondary amine compound; an acidic gas absorbent containing a heteroaromatic ring compound and a primary or secondary amine compound; an acidic gas removal device using these acidic gas absorbents; and a method for removing an acidic gas are disclosed.
Abstract:
An object of the present invention is to provide a carbon dioxide absorbing solution capable of avoiding precipitation of a product formed by the reaction with carbon dioxide. The absorbing solution is an aqueous solution characterized by containing an amino acid salt comprising at least one carboxylic acid salt connected to a heterocyclic ring including at least one nitrogen atom as the ring member atom.
Abstract:
The present invention provides a carbon dioxide absorbing solution capable of preventing production of an oxidization degradation product of alkanolamine, that is, BICINE. The carbon dioxide absorbing solution contains an alkanolamine and a sulfur amino acid represented by the formula (1) or (2).