Patents by Inventor Arup SenGupta

Arup SenGupta 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).

  • Patent number: 9580337
    Abstract: A pressurized forward osmotic separation process is disclosed. Generally there are two processes described. One process involves the concentration of a target solute in the first solution; the other process involves the extraction of a solvent from a first solution both by a second solution comprising of water and soluble gas or water, soluble gas, and a compound by creating an osmotic concentration gradient across the semi permeable membrane. The first solution is under pressure from an inert gas and the second solution is under pressure from a soluble gas with equal system pressures greater than 1 atmosphere. The increase or decrease of partial pressure of the soluble gas in the second solution increases or decreases the chemical potential of the second solution to achieve different solution properties. The soluble gas may be carbon dioxide and the compound may be magnesium hydroxide.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: February 28, 2017
    Assignee: Lehigh University
    Inventors: Arup SenGupta, Robert Creighton, Ryan Smith
  • Publication number: 20150175447
    Abstract: A pressurized forward osmotic separation process is disclosed. Generally there are two processes described. One process involves the concentration of a target solute in the first solution; the other process involves the extraction of a solvent from a first solution both by a second solution comprising of water and soluble gas or water, soluble gas, and a compound by creating an osmotic concentration gradient across the semi permeable membrane. The first solution is under pressure from an inert gas and the second solution is under pressure from a soluble gas with equal system pressures greater than 1 atmosphere. The increase or decrease of partial pressure of the soluble gas in the second solution increases or decreases the chemical potential of the second solution to achieve different solution properties. The soluble gas may be carbon dioxide and the compound may be magnesium hydroxide.
    Type: Application
    Filed: December 17, 2014
    Publication date: June 25, 2015
    Applicant: Lehigh University
    Inventors: Arup SenGupta, Robert Creighton, Ryan Smith
  • Publication number: 20070039895
    Abstract: A process for removing DOC (dissolved organic carbon) from a concentrated salt solution containing DOC by contacting the salt solution with a coagulant/flocculant such that the DOC becomes insoluble and removing the insoluble DOC from the salt solution.
    Type: Application
    Filed: April 2, 2004
    Publication date: February 22, 2007
    Applicant: ORIA AUSTRALIA PTY LTD.
    Inventors: Arup Sengupta, Ping Li, Brendan Murray, Stuart Harrison, Gregory Vero
  • Publication number: 20050156136
    Abstract: Polymeric anion exchangers are used as host materials in which hydrated Fe(III) Oxides (HFO) are irreversibly dispersed within the exchanger beads. Since the anion exchangers have positively charged quaternary ammonium functional groups, anionic ligands such as arsenates, chromates, oxalates, phosphates, phthalates can permeate in and out of the gel phase and are not subjected to the Donnan exclusion effect. Consequently, anion exchanger-supported HFO micro particles exhibit significantly greater capacity to remove arsenic and other ligands in comparison with cation exchanger supports. Loading of HFO particles is carried out by preliminary loading of the anion exchange resin with an oxidizing anion such as MnO4? or OCl?, followed by passage of a Ferrous Sulfate solution through the resin.
    Type: Application
    Filed: August 24, 2004
    Publication date: July 21, 2005
    Applicant: Arup K. SenGupta
    Inventors: Arup SenGupta, Luis Cumbal
  • Patent number: 6136199
    Abstract: Phosphates and chromates are selectively removed from contaminated water by a new class of sorbent, referred to as a Polymeric Ligand Exchanger (PLE). The exchanger bed comprising a styrene-divinylbenzene or polymethacrylate matrix having an electrically neutral chelating functional group with nitrogen or oxygen donor atoms, and a Lewis-acid type metal cation, such as copper, bonded to the chelating functional group in a manner that the positive charges of the metal cation are not neutralized. PLEs are very selective toward phosphates and chromates, chemically stable, and also amenable to efficient regeneration.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: October 24, 2000
    Assignee: Julius James Jablonsky
    Inventors: Arup SenGupta, Dongye Zhao