Council of Scientific and Industrial Research receives patent in India for improved process for treatment of black liquor to produce environmentally acceptable clean water

NEW DELHI , January 22, 2014 () – Council of Scientific and Industrial Research (CSIR) received Patent for an improved process for the treatment of paper mill black liquor to produce clean water on Sept. 4, 2010. The patent number issued by the Indian Patent Office is 242687.

Council of Scientific and Industrial Research (CSIR) had filed patent application number 3694/DEL/1998 on Dec. 9, 1998. The inventors of the patent are Jitendra Nath Mohanty, Bhaskara Venkata Ramana Murthy, Hemanta Kumar Tripathy, Anil Kanta Tripathy and Yerramselte Venkata Swamy.

The International classification number is D21C 11/00.

According to the Controller General of Patents, Designs & Trade Marks, "An improved process for treatment of paper mill black waste liquor to produce clean water which comprises pre-conditioning the black liquor by known method, adding coagulating agents and cationic magnofloc in the range of 50 mg to 150mg/l and mixing well, allowing to settle for a period ranging from 60 to 180 minutes, separating the liquid from residue and then bleaching the solution with chlorine for a period ranging from 60-180 minutes to get environmentally acceptable clean water."

About the Applicant

Council of Scientific and Industrial Research (CSIR) established in 1942, is an autonomous body and India's largest Research and Development (R&D) organization, with 39 laboratories and 50 field stations or extension centers spread across the nation, with a collective staff of over 17,000. Although CSIR is mainly funded by the Ministry of Science and Technology, it operates as an autonomous body registered under the Registration of Societies Act of 1860.

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