The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2013
Filed:
Oct. 09, 2009
Tetsuro Fukase, Tokyo, JP;
Nobuhiro Orita, Tokyo, JP;
Tetsuro Fukase, Tokyo, JP;
Nobuhiro Orita, Tokyo, JP;
Kurita Water Industries Ltd., Tokyo, JP;
Abstract
Power generation efficiency of a microbial power generation device is improved by a simple and inexpensive means. Two plate-shaped cation-exchange membranesare disposed parallel to each other in a tank body, whereby a negative electrode chamberis formed between the cation-exchange membranes. Two positive electrode chambersare each formed so as to be separated from the negative electrode chamberby the corresponding cation-exchange membrane. An oxygen-containing gas is passed through the positive electrode chamber, a negative electrode solution L is supplied to the negative electrode chamber, and preferably the negative electrode solution is circulated. An acid gas (carbon dioxide gas) is introduced into the oxygen-containing gas to be supplied to the positive electrode chamber. Movement of Naand Kions is promoted by the pH neutralization effect produced by the acid gas, and thereby power generation efficiency can be improved.