Nitrogen-containing activated carbon material

US9095840B2 · kind B2 · utility

Assignee

• The Penn State Research Foundation · US

Inventors

• Frederick S. Cannon · State College, US
• Nicole Robitaille Brown · State College, US
• Timothy M. Byrne · North Charleston, US
• Pin Hou · State College, US
• Robert Parette · Laureldale, US
• Xin Gu · State College, US
• Colin C. Cash · State College, US
• Cesar Nieto Delgado · State College, US
• Siqi Hong · State College, US

Key dates

• Filing date: Jan 3, 2013
• Grant date: Aug 4, 2015
• Expiry date: Jul 14, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An activated carbon material for removing a contaminant from a liquid. The activated carbon material can be a plurality carbon grains that have a pore volume of approximately 0.1 milliliters per gram (mL/g) in the range of less than about 15 angstroms in width. The carbon grains can also have or contain a nitrogen-containing species having a concentration of more than 2 atomic percent nitrogen. A plurality of the carbon grains can be used to make a contactor that is operable to remove or reduce perchlorate having a concentration of 20 parts per billion (ppb) to less than 4 ppb from 4,500 bed volumes of water with the nitrogen-containing species leaching off of the carbon grains less than 0.1 mg/L. The activated carbon material can also be electrochemically regenerated.