Abstract: The present disclosure provides an agent for selective metal recovery, a metal recovery method, and a metal elution method.

Abstract: The present disclosure relates to a method for recovering a metal or a metal compound, using genus Galdieria.

Abstract: Disclosed is a method and device for identifying an industry classification of an enterprise and characteristic pollutants of the enterprise, wherein the method for identifying an industry classification of an enterprise comprises: acquiring information point data of a target enterprise; determining feature words of the information point data and feature values of the feature words according to a preset semantic lexicon, preset industry summary information and the information point data; and determining the industry classification to which the target enterprise belongs according to a preset industry classification prediction model and the feature values. Through implementing the present invention, the obtained feature values can effectively avoid interference of meaningless words, such that the industry classification to which the target enterprise belongs obtained from identification is more accurate.

Abstract: The present invention relates to a metal recovery agent or a metal compound recovery agent including: a dried matter of a cell or a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter. The present invention also relates to a method for recovering a metal or a metal compound including: an addition step of adding a dried matter of a cell or a cell derivative of the red algae belonging to the order Cyanidiales, or an artificial matter that imitates the dried matter to a metal solution; and an adsorption step of causing a metal or a metal compound contained in the metal solution to be adsorbed onto the cell or the cell derivative derived from the dried matter, or the artificial matter.