Cellulase deinking process of non-impact printed wastes was studied. The optimized conditions were: cellulase charge 0.3%, temperature 50℃, pulping consistency 10%, enzyme treatment time 30 min,agitating speed 400 rp...Cellulase deinking process of non-impact printed wastes was studied. The optimized conditions were: cellulase charge 0.3%, temperature 50℃, pulping consistency 10%, enzyme treatment time 30 min,agitating speed 400 rpm. Qquality of the deinking pulp was assessed by measuring the number, average diameter, percent coverage of residual ink using Paperican ink scanner.展开更多
We studied an enzymatic deinking process of non-impact printed paper which was carried out in batch equipment, similar to Valley beater. The equipment can provide suitable forces to cause toner separation from fiber r...We studied an enzymatic deinking process of non-impact printed paper which was carried out in batch equipment, similar to Valley beater. The equipment can provide suitable forces to cause toner separation from fiber rather than fiber damage. The factors that influenced the deinking efficiency included beating time, pressure between rotating bars and bottom bars, enzyme properties such as dosage, cellulase activity, temperature, pH, etc. Beating time and enzyme type and enzyme dosage was investigated in detail. The deinked pulp was brighter and cleaner. The drainage property also can be controlled by adjusting enzyme dosage and mechanical action strength. Combining enzyme with mechanical action provides the best deinking effects, not enzyme alone. In the meantime, mechanism of enzymatic deinking was discussed depending on the deinked pulp properties.展开更多
文摘Cellulase deinking process of non-impact printed wastes was studied. The optimized conditions were: cellulase charge 0.3%, temperature 50℃, pulping consistency 10%, enzyme treatment time 30 min,agitating speed 400 rpm. Qquality of the deinking pulp was assessed by measuring the number, average diameter, percent coverage of residual ink using Paperican ink scanner.
文摘We studied an enzymatic deinking process of non-impact printed paper which was carried out in batch equipment, similar to Valley beater. The equipment can provide suitable forces to cause toner separation from fiber rather than fiber damage. The factors that influenced the deinking efficiency included beating time, pressure between rotating bars and bottom bars, enzyme properties such as dosage, cellulase activity, temperature, pH, etc. Beating time and enzyme type and enzyme dosage was investigated in detail. The deinked pulp was brighter and cleaner. The drainage property also can be controlled by adjusting enzyme dosage and mechanical action strength. Combining enzyme with mechanical action provides the best deinking effects, not enzyme alone. In the meantime, mechanism of enzymatic deinking was discussed depending on the deinked pulp properties.
