a significant fraction of short fibers is produced while recycling old corrugated containerboards , which are usually rejected as solid waste stream , requiring landfilling and posing environmental problems . the major component of these fines rejects are primarily cellulose that can be hydrolyzed into sugars for possible fermentation into biofuels , bioplastics or other sugar based products . use of fines also offers benefits such as negative costs and production of fermentable sugars without requiring complex pretreatment processes , now required to hydrolyze and eliminate inhibitors from hydrolyzate . enzymatic hydrolysis of reject fines from a recycled occ mill , employing different strains of cellulases , were investigated . fillers in the fines increases the required dosage of enzymes and costs . enzyme loading can be lowered by addition of surfactants to reduce their inhibitory activity . the nonionic surfactant triton x - 80 improved hydrolysis yields by up to 10 percent points .