Application of chitosan-based particles for deinking of printed paper and its bioethanol fermentation
Research Abstract
The deinking ability of chitosan-based particles in the pretreatment of recycling paper was studied. All these
polymers were able to adsorb carbon black as ink pigment. Amount of adsorbents, contact time, solution pH and
temperature were optimized to estimate maximum sorption capacity of polymers. The optimum condition of
carbon black adsorption was achieved using chitosan-coated Ca-alginate beads at 30 min, 35 °C, pH 6.5 and
220 rpm of agitation speed. The adsorption capacity was more than 80%. Packed-bed reactor filled with chitosan-coated alginate beads was conducted and operated under the optimal conditions. More than 95% of ink was
adsorbed onto carriers after 20 h. Saccharification with industrial enzyme preparation of deinked paper pulp was
carried out and sugars released were converted into ethanol. The results of alcoholic fermentation confirmed the
success of the deinking process. Our results are very promising in the development of pretreatment technology to
enhance the efficiency of the utilization of recycling paper.
Research Keywords
Wastepaper Deinking Chitosan Bioethanol Mixed culture Co-fermentation