Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2005-09-06
2010-02-23
Barry, Chester T (Department: 1797)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S691000, C210S692000, C210S693000, C210S694000, C502S416000, C502S418000
Reexamination Certificate
active
07666306
ABSTRACT:
The present invention provides an adsorbent comprising calcined coke with a BET surface area of 20 m2/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.
REFERENCES:
patent: 6194344 (2001-02-01), Tsuchitani et al.
patent: 0 124 065 (1984-07-01), None
patent: 0 282 053 (1988-09-01), None
patent: 55-56805 (1980-04-01), None
patent: 1-270576 (1989-10-01), None
patent: 5-163491 (1993-06-01), None
patent: 7-136501 (1995-05-01), None
patent: 9-271759 (1997-10-01), None
patent: 2002-254072 (2002-09-01), None
patent: 2002-370023 (2002-12-01), None
patent: 2004-99348 (2004-04-01), None
patent: 1344738 (1987-10-01), None
patent: WO 01/10978 (2001-02-01), None
S. Ragan et al., “Effects of calcination upon properties of needle-cokes,”J. Mater. Sci., 18 (1983), pp. 3695-3704.
Fukuda Nobuo
Hayata Sadao
Ino Akira
Oyama Takashi
Barry Chester T
Finnegan Henderson Farabow Garrett & Dunner LLP
Nippon Petroleum Refining Co., Ltd.
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