Production of oxidized humic acids by an oxygen-alkali process

Details Production of oxidized humic acids by an oxygen-alkali process Production of oxidized humic acids by an oxygen-alkali process

C - Chemistry, Metallurgy

08

H

C08H 99/00 (2010.01) C07G 99/00 (2009.01)

Patent

CA 2195231

A method is disclosed for the production of oxidized humic acids. The process of the invention comprises reacting humic acid bearing ores with oxygen under alkaline conditions at a temperature between 100°C and 200°C for at least 1/2 hour, but usually for 1-2 hours, to produce oxidized humic acids which are soluble at pH as low as 2.9 and which are formed in yields of at least 70%. The oxidized humic acids produced according to the process of the invention are also superior viscosity reducers.

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