Fiber surface characterization of old newsprint pulp deinked by combining hemicellulase with laccase-mediator system
Fiber surface characterization of old newsprint pulp deinked by combining hemicellulase with laccase-mediator system
复制标题
半纤维素酶与漆酶介体系统联合脱墨旧新闻纸浆的纤维表面表征
DOI：
10.1016/j.biortech.2011.03.051
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发表时间：
2011-06-01
影响因子：
11.4
通讯作者：
Li, J. H.
中科院分区：
文献类型：
--
作者：
Xu, Q. H.;Wang, Y. P.;Li, J. H.
研究了半纤维素酶与漆酶介体系统（LMS）相结合对旧新闻纸（ONP）进行脱墨，并通过化学分析电子能谱（ESCA）、接触角（CA）、衰减全反射傅里叶变换红外光谱（ATR-FTIR）、纤维质量分析仪（FQA）和环境扫描研究了脱墨过程中表面化学成分和纤维形态的变化。 电子显微镜（ESEM）。结果表明，与单独用半纤维素酶或LMS脱墨的纸浆相比，半纤维素酶/LMS脱墨纸浆的有效残留油墨浓度(ERIC)较低。这表明半纤维素酶和LMS之间存在协同脱墨作用。研究发现，在半纤维素酶/LMS脱墨过程中，纤维表面的O/C比增加，木质素的表面覆盖率下降。半纤维素酶/LMS脱墨纸浆的接触角低于用每种酶脱墨的纸浆的接触角。 ESEM观察表明，由于协同处理，纤维表面出现了更多的原纤维。 (C) 2011 Elsevier Ltd. 保留所有权利。
Deinking of old newsprint (ONP) by combining hemicellulase with laccase-mediator system (LMS) was investigated, and surface chemical composition and fiber morphology changes during the deinking process were studied by electron spectroscopy for chemical analysis (ESCA), contact angle (CA), attenuated total reflectance fourier transform infrared spectrometry (ATR-FTIR), fiber quality analyzer (FQA), and environmental scanning electronic microscopy (ESEM). Results showed that, compared to the pulp deinked with hemicellulase or LMS individually, effective residual ink concentration (ERIC) was lower for the hemicellulase/LMS-deinked pulp. This indicated that there is a synergistic deinking effect between hemicellulase and LMS. It was found that O/C ratio of the fiber surface increased and the surface coverage of lignin decreased during the hemicellulase/LMS deinking process. The contact angle of the hemicellulase/LMS-deinked pulp was lower than that of pulps deinked with each individual enzyme. ESEM observations showed that more fibrils appeared on the fiber surface due to synergistic treatment. (C) 2011 Elsevier Ltd. All rights reserved.