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:
Feb. 23, 2010
Filed:
Sep. 06, 2005
Nobuo Fukuda, Yamaguchi, JP;
Sadao Hayata, Yamaguchi, JP;
Takashi Oyama, Yamaguchi, JP;
Akira Ino, Yamaguchi, JP;
Nobuo Fukuda, Yamaguchi, JP;
Sadao Hayata, Yamaguchi, JP;
Takashi Oyama, Yamaguchi, JP;
Akira Ino, Yamaguchi, JP;
Nippon Petroleum Refining Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an adsorbent comprising calcined coke with a BET surface area of 20 m/g or less which is obtained by calcining a particular carbonaceous material at 1000 to 1500° C. and which is preferably obtained by calcining coal coke, petroleum coke or charcoal coke at 1000 to 1500° C. The adsorbent of the present invention exhibits adequate adsorbent ability with respect to an oil component in oil-containing wastewater even when the oil-containing wastewater is an emulsion or contains a low concentration of the oil component, and also stably maintains the adsorbent ability over a long period of time.