林产化学与工业 ›› 2019, Vol. 39 ›› Issue (3): 17-24.doi: 10.3969/j.issn.0253-2417.2019.03.003
收稿日期:
2018-12-03
出版日期:
2019-06-28
发布日期:
2019-06-26
通讯作者:
胡芳
E-mail:fangh16@163.com
作者简介:
石爽(1997-),女,黑龙江牡丹江人,本科生,主要从事废纸回用技术领域研究
基金资助:
Shuang SHI,Fang HU*(),Zechao MIAO,Hetian CAI,Dezhao LI
Received:
2018-12-03
Online:
2019-06-28
Published:
2019-06-26
Contact:
Fang HU
E-mail:fangh16@163.com
Supported by:
摘要:
超声波对废纸纤维的处理,可以扩大废纸纤维原料的应用领域。综述了超声波处理废纸纤维在提高再生纸的纸页性能、强化生产可发酵糖和乙醇、辅助纤维素纳米纤维的制备,以及提高水泥建材耐久性等方面的应用,分析了超声波功率与频率、超声波作用时间、温度和悬浮固体浓度等超声波处理过程中的影响因素,探讨了超声波处理对纤维素结晶性质、化学结构和化学反应可及性的影响。并对当前超声波处理废纸纤维研究领域存在的问题进行了分析,展望了未来的发展方向。
中图分类号:
石爽,胡芳,缪泽超,蔡合田,李得钊. 超声波处理废纸纤维的研究进展[J]. 林产化学与工业, 2019, 39(3): 17-24.
Shuang SHI,Fang HU,Zechao MIAO,Hetian CAI,Dezhao LI. Recent Advances in Ultrasonic Treatment of Waste Paper Fibers[J]. Chemistry and Industry of Forest Products, 2019, 39(3): 17-24.
表1
超声波处理废纸纤维的应用"
应用 applications | 原料 materials | 超声波参数 ultrasonic parameters | 结果 results | 文献 reference |
提高纸页强度 paper strength improvement | 旧瓦楞纸箱 old corrugated container(OCC) | 20 kHz、190 W | 超声波处理可以代替机械精磨,以生产较高松厚度的再生纸 mechanical refining could be replaced by the ultrasonic treatment in order to produce recycled papers with higher bulk | [ |
旧瓦楞纸箱 OCC | 20 kHz、500 W | 保水值和大部分纸页强度性能随超声波处理时间的延长而提高 WRV and most strength properties were improved with the increase of ultrasonic treatment time | [ | |
报纸和激光印刷纸 newspaper and laser-printed office paper | 20 kHz、200 W | 经超声波处理后的纤维,制得的纸页具有更高的抗张强度和白度 the paper sheets prepared from the ultrasonically treated fiber showed higher tensile strength and brightness | [ | |
废纸板 post-consumer cardboard | 190 W、10~30 min | 超声波与酶处理相结合可以提高回收浆的性能,且不影响纤维本身强度 combination of ultrasound with enzymatic treatments were effective in enhancing the properties of recycled paper and did not reduce intrinsic fiber strength | [ | |
生产可发酵糖和乙醇 fermentable sugars and ethanol production | 报纸 newspaper | 预处理pretreatment: 100 W、70 min 酶解enzymatic hydrolysis:60 W、6.5 h | 在最佳条件下,超声波辅助酶解比传统方法还原糖释放浓度增加2.4倍 approximately 2.4 times increase in the release of reducing sugar concentration was obtained by the ultrasound-assisted enzymatic hydrolysis approach compared with traditional method | [ |
报纸 newspaper | 发酵 fermentation: 25 kHz、160 W、10 min; 其他同上 others the same as above | 在最佳条件下,与非超声波控制发酵相比,乙醇产量提高1.8倍 1.8-fold enhanced productivity of ethanol was obtained due to the use of ultrasound at optimized parameters compared with non-ultrasound | [ | |
瓦楞芯纸 corrugating medium | 23~25 kHz、40~600 W、10~80 min | 酸水解前对原料进行超声波预处理,可产生更多还原糖 ultrasonic treatment before acid hydrolysis produced more reducing sugar | [ | |
报纸、纸箱纸和办公废纸 newspaper, carton paper and office paper | 20 kHz、15~60 W | 除报纸外,最终的糖转化率随超声波强度的增加而增加,并趋于常数,在30W超声波强度下,报纸的糖转化率最大 the ultimate sugar conversion increased and tended to approach a constant with the increase in the specific ultrasonic intensity except for the case of newspaper. For newspaper, optimal ultrasonic intensity was 30 W | [ | |
混合办公废纸 mixed waste office paper | — | 超声波辅助同步糖化和发酵过程,达到相同的乙醇产率,酶的用量减少50% ultrasound stimulation during the simultaneous saccharification and fermentation could achieve the same ethanol yield and reduce the amount of enzyme by half | [ | |
制备纳米纤维素 cellulose nanofibers production | 再生纸浆recycled cellulose pulp | — | 制得纳米纤维平均长度1.925 μm,直径40~60 nm the nanofibers had an average length of 1.925 μm, regarding the diameter, the fibers had a width of 40-60 nm | [ |
包装纸 packing paper | — | 经超声波处理后制得的纤维素纳米纤维膜,其拉伸强度比只经研磨制得的产品提高了25% the tensile strength of cellulose nanofibers prepared by ultrasound was 25% higher than that of the products prepared by grinding only | [ | |
提高水泥建材耐久性 increasing durability of cement composites | 报纸和牛皮纸 newsprint and Kraft paper | 20~25 kHz、300 W | 超声波处理使纤维的吸水量超过自身质量的8倍,可增强水泥浆体早期抗裂和自收缩性能 with ultrasonic treatment, the water absorption of fiber exceeded eight times their own weight. Early crack-resistance and self-shrinkage of cement paste could be improved | [ |
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