Fig. 6From: Cellulose and lignin purified from Metroxylon sagu palm fronds by a new technology with 2-methylanthraquinone cooking and peroxymonosulfuric acid bleachingTransformation of SPF unbleached pulps into pure cellulose during five-stage TCF bleaching at 23% AA dosage (O: oxygen; Psa: peroxymonosulfuric acid; Ep: alkaline extraction with hydrogen peroxide)Back to article page