Patents by Inventor Lina Posso-Blandon

Lina Posso-Blandon 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).

  • Carbon dioxide stimulation of nitrification in activated sludge reactors
    Patent number: 7655143
    Abstract: A method of stimulating nitrification at low SRT by elevating pCO2 during aeration is disclosed. The improvement on solids settling performance when elevated pCO2 was supplied after 2 hours within the React cycle is consistent with the previous results that identified inorganic carbon as a potential remedy to poor settling and bulking sludge problems in activated sludge systems. Elevated pCO2 increases the concentration of carbon dioxide and lowers the pH, which improve nitrification. The specific growth rate of nitrifying bacteria is sensitive to pCO2, pH, and dissolved oxygen (DO). The DO is a function of the aeration rate. Elevating the pCO2 and lowering the aeration rate provides conditions for nitrification rates that are comparable to conventional systems. However, the lower aeration rate yields significant energy cost savings.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: February 2, 2010
    Assignee: University of South Florida
    Inventors: Peter G. Stroot, Lina Posso-Blandon, Raymond A. Morris
  • Carbon Dioxide Stimulation of Nitrification in Activated Sludge Reactors
    Publication number: 20080029454
    Abstract: A method of stimulating nitrification at low SRT by elevating pCO2 during aeration is disclosed. The improvement on solids settling performance when elevated pCO2 was supplied after 2 hours within the React cycle is consistent with the previous results that identified inorganic carbon as a potential remedy to poor settling and bulking sludge problems in activated sludge systems. Elevated pCO2 increases the concentration of carbon dioxide and lowers the pH, which improve nitrification. The specific growth rate of nitrifying bacteria is sensitive to pCO2, pH, and dissolved oxygen (DO). The DO is a function of the aeration rate. Elevating the pCO2 and lowering the aeration rate provides conditions for nitrification rates that are comparable to conventional systems. However, the lower aeration rate yields significant energy cost savings.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 7, 2008
    Applicant: UNIVERSITY OF SOUTH FLORIDA
    Inventors: Peter G. Stroot, Lina Posso-Blandon, Raymond Anthony Morris