Novel microorganisms, selenium acid compound-reducing agent, method for reducing and method for removing selenium acid compound, and process for producing metallic selenium

摘要

Disclosed are novel microorganisms having an excellent ability to reduce selenium acid compounds, a selenium acid compound-reducing agent comprising such microorganism(s) as an active ingredient, a method for reducing and a method for removing a selenium acid compound with use of such microorganism(s), and a process for producing metallic selenium. The microorganisms of the present invention are Aeromonas sp. strain JPCC SEP JP-1, Klebsiella sp. strain JPCC SEP JP-2, and Sulfurospirillum sp. strain JPCCY SEP-3. Also disclosed are a method for reducing a selenium acid compound comprising the step of co-culturing these microorganisms under the presence of a selenium acid compound, and a process for producing metallic selenium comprising the steps of: co-culturing these microorganisms under the presence of a selenium acid compound; and separating the thus produced culture product.