An ecofriendly cost effective enzymatic methodology for deinking of school waste paper.
Efficiency of xylano-pectinolytic enzymes in deinking of school waste paper for its reuse has been investigated in the present study. Enzymatic deinked pulp decreased the requirement of chemicals to nearly 50% and gave same optical properties of pulp as obtained by conventional deinking process. This biodeinking plus chemical deinking approach resulted in a decrease of 20.15% and 22.64% in BOD and COD values of effluents and a gain of 10.71% in viscosity, 7.49% in breaking length, 10.52% in burst factor and 6.25% in tear factor as compared to conventional chemical deinking. This is the first report mentioning the use of xylanase and pectinase produced from a cellulase free alkalo-thermotolerant bacterial strain in the same cost effective agricultural residues based production medium for deinking and will help in making the process ecofriendly with 50% reduction in chemicals, commercially viable with better paper quality.
Department of Biotechnology, Kurukshetra University, Kurukshetra, India.
Avtar
A
Singh
Ravi Dutt
RD
Yadav
Amanjot
A
Kaur
Ritu
R
Mahajan
D003362:Cost-Benefit Analysis; D043364:Endo-1,4-beta Xylanases / Q000378:metabolism*; D055772:Green Chemistry Technology / Q000191:economics* / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007281:Ink; D010209:Paper; D011096:Polygalacturonase / Q000378:metabolism*; D012574:Schools; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D014865:Waste Disposal, Fluid; D014866:Waste Products / Q000032:analysis*
D013501:Surface-Active Agents; D014866:Waste Products; D011096:Polygalacturonase; D043364:Endo-1,4-beta Xylanases