Singh Avtar, Kaur Amanjot, Yadav Ravi Dutt, Mahajan Ritu
1Department of Biotechnology, Kurukshetra University, Kurukshetra, 136119 India.
3Present Address: Department of Biological Sciences, Indian Institute of Science Education and Research, Mohali, Punjab 140306 India.
3 Biotech. 2019 Feb;9(2):51. doi: 10.1007/s13205-019-1590-2. Epub 2019 Jan 24.
In this study, a chemical reduction strategy was explored for deinking of newspaper waste using xylano-pectinolytic catalysts. A remarkable reduction of 40% in toxic chemicals consumption was obtained by introducing this enzymatic approach of deinking along with improved level of various physical and optical properties. Similarly, a reduction of 18.89% and 17.68% in BOD, COD values of effluent has also been noticed. This combined deinking methodology also resulted in a gain of 5.82% in breaking length, 6.45% in tear factor, 8.57% in burst factor and 9.64% in viscosity, which greatly improved the quality of the handsheets. The study revealed that enzymatic deinking followed by chemical deinking with 40% less chemicals consumption, could be an effective method for reducing the negative impact over the environment caused by 100% deinking chemicals. This is the first report of newspaper waste deinking using xylano-pectinolytic catalysts produced concurrently in the same production media by a bacterial isolate using agricultural wastes as carbon sources.
在本研究中，探索了一种使用木聚糖 - 果胶分解催化剂对报纸废料进行脱墨的化学还原策略。通过引入这种酶法脱墨方法，以及提高各种物理和光学性能水平，有毒化学品的消耗量显著降低了40%。同样，还注意到废水的生化需氧量（BOD）和化学需氧量（COD）值分别降低了18.89%和17.68%。这种联合脱墨方法还使裂断长提高了5.82%，撕裂因子提高了6.45%，耐破因子提高了8.57%，粘度提高了9.64%，极大地改善了手抄纸的质量。该研究表明，先进行酶法脱墨，然后进行化学脱墨，且化学品消耗量减少40%，这可能是一种有效方法，可减少100%使用脱墨化学品对环境造成的负面影响。这是关于使用木聚糖 - 果胶分解催化剂对报纸废料进行脱墨的首次报道，该催化剂由一种利用农业废料作为碳源的细菌分离物在同一生产介质中同时产生。
