Laccase-mediator biobleaching applied to a direct yellow dyed paper.
A laccase-mediator system (LMS) for biobleaching was applied to a bleached chemical pulp dyed with stilbene dye Direct Yellow 11. Of mediators tested, 2,2'-azinobis(3-ethylbenzthiazoline-6-sulfonate) (ABTS) was found to be more effective than either violuric acid (VA) or N-hydroxybenzotriazole (HBT), which had been shown to be superior to ABTS when bleaching virgin chemical pulp. The laccase-ABTS system removed more than 60% of the color.
Knutson
Kristina
K
Institute of Paper Science and Technology, School of Chemistry and Biochemistry, Georgia Institute of Technology, 500 10th St. NW, Atlanta, Georgia 30332-0620, USA.
Ragauskas
Arthur
A
D003116:Color; D003124:Colorimetry; D007220:Industrial Waste / Q000517:prevention & control*; D042845:Laccase / Q000737:chemistry*; D010209:Paper; D011804:Quinolines / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
D007220:Industrial Waste; D011804:Quinolines; C027012:2-((2'-quinolinyl)-1,3-indandione); D042845:Laccase