Patents by Inventor Hefa Cheng

Hefa Cheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150291447
    Abstract: Disclosed is an application of dealuminated Y type zeolite in degrading organic pollutants in water under microwave induction. The dealuminated Y type zeolite, with the cation being H+ and a mol ratio of SiO2 to Al2O3 being 60, is applied to degrading the organic pollutants in the water under microwave induction. The degrading rate of atrazine is up to 67.40 nmol/min under the radiation of 700 W microwave (2.450 GHz) at the laboratory simulation condition.
    Type: Application
    Filed: October 9, 2012
    Publication date: October 15, 2015
    Inventors: Erdan Hu, Hefa Cheng, Yuanan Hu
  • Patent number: 9073765
    Abstract: This invention discloses a kind of method to remove organic pollutants through coupling microwave degradation based on microporous mineral adsorption. It consists of the following major steps: Fill hydrophobic porous mineral adsorbent into the adsorption column to adsorb organic pollutants in the organic wastewater, and start up the microwave generator after the adsorbent reaches saturation so that the organic pollutants adsorbed inside the adsorption column can be degraded under microwave induction. With the alternative operation and regeneration of two adsorption columns, the organic wastewater can be treated continuously. In the invention, with the technologies of microwave-induced degradation through hydrophobic microporous mineral coupling adsorption, organic pollutants can be removed from water efficiently, and the degradation process and carrier can be circulated. The pollutants can be mineralized into non-toxic and harmless micromolecular substance completely.
    Type: Grant
    Filed: February 11, 2012
    Date of Patent: July 7, 2015
    Assignee: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
    Inventors: Hefa Cheng, Erdan Hu
  • Publication number: 20140027381
    Abstract: This invention discloses a kind of method to remove organic pollutants through coupling microwave degradation based on microporous mineral adsorption. It consists of the following major steps: Fill hydrophobic porous mineral adsorbent into the adsorption column to adsorb organic pollutants in the organic wastewater, and start up the microwave generator after the adsorbent reaches saturation so that the organic pollutants adsorbed inside the adsorption column can be degraded under microwave induction. With the alternative operation and regeneration of two adsorption columns, the organic wastewater can be treated continuously. In the invention, with the technologies of microwave-induced degradation through hydrophobic microporous mineral coupling adsorption, organic pollutants can be removed from water efficiently, and the degradation process and carrier can be circulated. The pollutants can be mineralized into non-toxic and harmless micromolecular substance completely.
    Type: Application
    Filed: February 11, 2012
    Publication date: January 30, 2014
    Applicant: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
    Inventors: Hefa Cheng, Erdan Hu