The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2012
Filed:
Jun. 04, 2008
Arup K. Sengupta, Bethlehem, PA (US);
Prasaun K. Chatterje, Bethlehem, PA (US);
Arup K. Sengupta, Bethlehem, PA (US);
Prasaun K. Chatterje, Bethlehem, PA (US);
Lehigh University, Bethlehem, PA (US);
Abstract
Methods for rapid sensing of dissolved toxic heavy metals use a hybrid inorganic material ('HIM'), which is synthesized from hydrated iron oxide ('HFO') and calcium magnesium silicate. HIM thus synthesized is used in sensing dissolved toxic heavy metals. Water containing toxic heavy metals (e.g., lead, copper, zinc, nickel, etc.) is passed through a sorbent bed of HIM, whereupon it shows a sharp drop in pH after a certain length of time. The presence of HFO and calcium magnesium silicates in HIM synergistically provide a precipitous drop in pH, which is characteristic of the concentration and type of toxic heavy metal. Therefore, observing a change in pH indicates the presence and identity of heavy metal ions in a test water sample.