Xylanase assisted Elemental Chlorine Free bleaching of sarkanda (Saccharum munja roxb) pulp

IF 3.4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biocatalysis and agricultural biotechnology Pub Date : 2025-05-07 DOI:10.1016/j.bcab.2025.103600

Ruchika Siwach , Amit Kumar , Richa Mishra , Kuldeep Sharma , Rajan Verma , Mithul Rajeev , Soumya Pandit , Sharad Agrawal

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引用次数: 0

Abstract

Sarkanda soda anthraquinone pulp, prepared under optimized conditions (16 % alkali dose, 160 °C, 20 min, and 1:4 biomass-to-liquid ratio), was treated with 20 IU xylanase per gram of oven-dried pulp at pH 7, 40 °C, for 75 min. The enzymatic pre-bleaching process effectively reduced chemical bleaching agents by 30 % without compromising pulp brightness. Additionally, it significantly enhanced pulp strength, improving the burst, tear and tensile indexes, 27, 12 and 8 %, respectively, demonstrating its effectiveness on overall pulp quality. Beyond enhancing mechanical properties, xylanase-assisted bleaching contributed to environmental sustainability by reducing the biological oxygen demand and chemical oxygen demand of the effluent by 28 % and 20 %, respectively. These findings highlight the potential of xylanase-assisted Elemental Chlorine Free (ECF) bleaching as a sustainable, cost-effective alternative for the pulp and paper industry, reducing chemical use, improving pulp quality, and minimizing pollution.

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木聚糖酶辅助沙肯达纸浆无氯漂白研究

在最佳条件下（碱用量为16%，160℃，20 min，生物质液比为1:4）制备的Sarkanda碱蒽醌纸浆，在pH为7,40℃的烘干纸浆中每克添加20 IU木聚糖酶，处理75 min。酶预漂白过程有效地减少了30%的化学漂白剂，而不影响纸浆的亮度。此外，它还显著提高了纸浆强度，使破裂指数、撕裂指数和拉伸指数分别提高了27%、12%和8%，表明它对纸浆的整体质量是有效的。除了提高机械性能外，木聚糖酶辅助漂白通过将废水的生物需氧量和化学需氧量分别降低28%和20%，有助于环境的可持续性。这些发现突出了木聚糖酶辅助无氯（ECF）漂白作为纸浆和造纸工业可持续的、具有成本效益的替代方案的潜力，减少了化学品的使用，提高了纸浆质量，并最大限度地减少了污染。

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来源期刊

Biocatalysis and agricultural biotechnology Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

7.70

自引率

2.50%

发文量

308

审稿时长

48 days

期刊介绍： Biocatalysis and Agricultural Biotechnology is the official journal of the International Society of Biocatalysis and Agricultural Biotechnology (ISBAB). The journal publishes high quality articles especially in the science and technology of biocatalysis, bioprocesses, agricultural biotechnology, biomedical biotechnology, and, if appropriate, from other related areas of biotechnology. The journal will publish peer-reviewed basic and applied research papers, authoritative reviews, and feature articles. The scope of the journal encompasses the research, industrial, and commercial aspects of biotechnology, including the areas of: biocatalysis; bioprocesses; food and agriculture; genetic engineering; molecular biology; healthcare and pharmaceuticals; biofuels; genomics; nanotechnology; environment and biodiversity; and bioremediation.