Ultrasound pretreatment and enzymatic deinking by using bacterial cellulases from rice husk

IF 1.7 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Journal of Wood Chemistry and Technology Pub Date : 2023-03-24 DOI:10.1080/02773813.2023.2190594

S. Gea, Rumondang Bulan, E. Zaidar, A. Piliang, Noni Oktari, S. Rahayu, Y. A. Hutapea, R. M. Sari

{"title":"Ultrasound pretreatment and enzymatic deinking by using bacterial cellulases from rice husk","authors":"S. Gea, Rumondang Bulan, E. Zaidar, A. Piliang, Noni Oktari, S. Rahayu, Y. A. Hutapea, R. M. Sari","doi":"10.1080/02773813.2023.2190594","DOIUrl":null,"url":null,"abstract":"Abstract Ultrasonic pretreatment could improve the accessibility of enzymes to cellulosic fibers, hence expanding the access of enzymes to effectively remove ink from paper. In this study, enzymes were isolated from paddy rice husks and utilized for biodeinking process. The characterizations of deinking from the pulp filtrate and paper samples were carried out to understand the effect of bacterial cellulases and ultrasonic pretreatment with time variables. The results showed that cellulases from bacterial isolates had the ability to hydrolyze cellulose at 1.78 U/mL enzyme activity. Ink content measurement showed 2310 ppm of ink was removed in the paper samples with 15 min of ultrasound pretreatment and 2% cellulases. Meanwhile, morphological analysis showed significant differences in the surface areas between treated and untreated paper samples. The highest crystallinity index achieved was 70.9%, and thermal resistance was 21.0%. Other paper qualities such as stain decrease, and brightness level improvement were observed. The combination of 2% cellulases with optimum ultrasonication duration resulted in exceptional wastepaper recycling process.","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"43 1","pages":"117 - 128"},"PeriodicalIF":1.7000,"publicationDate":"2023-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Wood Chemistry and Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/02773813.2023.2190594","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, PAPER & WOOD","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract Ultrasonic pretreatment could improve the accessibility of enzymes to cellulosic fibers, hence expanding the access of enzymes to effectively remove ink from paper. In this study, enzymes were isolated from paddy rice husks and utilized for biodeinking process. The characterizations of deinking from the pulp filtrate and paper samples were carried out to understand the effect of bacterial cellulases and ultrasonic pretreatment with time variables. The results showed that cellulases from bacterial isolates had the ability to hydrolyze cellulose at 1.78 U/mL enzyme activity. Ink content measurement showed 2310 ppm of ink was removed in the paper samples with 15 min of ultrasound pretreatment and 2% cellulases. Meanwhile, morphological analysis showed significant differences in the surface areas between treated and untreated paper samples. The highest crystallinity index achieved was 70.9%, and thermal resistance was 21.0%. Other paper qualities such as stain decrease, and brightness level improvement were observed. The combination of 2% cellulases with optimum ultrasonication duration resulted in exceptional wastepaper recycling process.

查看原文本刊更多论文

稻壳细菌纤维素酶的超声预处理及酶法脱墨

超声预处理可以提高酶对纤维素纤维的接近性，从而扩大酶的接近范围，有效去除纸张上的油墨。本研究从稻壳中分离酶，并将其用于生物脱墨工艺。对纸浆滤液和纸样的脱墨效果进行了表征，以了解细菌纤维素酶和超声预处理对脱墨效果的影响。结果表明，菌株分离的纤维素酶水解纤维素的酶活为1.78 U/mL。经超声预处理15 min，添加2%纤维素酶后，纸样中油墨去除率为2310 ppm。同时，形态学分析显示，处理过的和未处理过的纸张样品的表面面积有显著差异。最高结晶度为70.9%，热阻为21.0%。观察到其他纸张质量，如污渍减少，亮度水平提高。将2%纤维素酶与最佳超声处理时间相结合，产生了特殊的废纸回收工艺。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Wood Chemistry and Technology 工程技术-材料科学：纸与木材

CiteScore

3.70

自引率

20.00%

发文量

审稿时长

3 months

期刊介绍： The Journal of Wood Chemistry and Technology (JWCT) is focused on the rapid publication of research advances in the chemistry of bio-based materials and products, including all aspects of wood-based polymers, chemicals, materials, and technology. JWCT provides an international forum for researchers and manufacturers working in wood-based biopolymers and chemicals, synthesis and characterization, as well as the chemistry of biomass conversion and utilization. JWCT primarily publishes original research papers and communications, and occasionally invited review articles and special issues. Special issues must summarize and analyze state-of-the-art developments within the field of biomass chemistry, or be in tribute to the career of a distinguished researcher. If you wish to suggest a special issue for the Journal, please email the Editor-in-Chief a detailed proposal that includes the topic, a list of potential contributors, and a time-line.