Method of removing lignin from bleach plant effluents

Details Method of removing lignin from bleach plant effluents Method of removing lignin from bleach plant effluents

C - Chemistry, Metallurgy

07

G

260/133, 8/78

C07G 1/00 (2006.01) C02F 1/52 (2006.01) C02F 9/00 (2006.01)

Patent

CA 1254554

Abstract A method of removing lignin from bleach plant effluents by using cellulose fibres. The method comprises an acidous phase during which sludge containing cellulose fibres is added to the acidous effluent, and an alkaline phase during which alkaline waste water is added to the effluent-sludge solution. A portion of the produced fraction containing fibres is recirculated to the acidous phase for reuse of the fibres.

495065

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