Entrapment of PM2.5 and PM10 dust particles using bleached nanocellulose based filters processed via ultrafine grinding

IF 4.9 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-01-08 DOI:10.1007/s10570-024-06368-9

Pallavi Gulipalli, Chandra Babu Mallineni, Trinath Jamma, Ramesh Adusumalli

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Abstract

Nonwoven glass fiber-based filters are used to study particulate matter (PM) concentration in air. In this research, the collection of PM using filters made from bleached nanocellulose fibers known for their high aspect ratio is discussed. Elemental chlorine free bleaching followed by refining using Lab valley beater and Super masscolloider has been carried out. Refining time (20 and 60 min) and clearance (0.4, 0.1, 0.01 and 0) between grinding stones were used as parameters to produce different grades of micro and nanocellulose fiber-based sheets. Refining using Lab valley beater yielded short-length whereas refining using Super masscolloider yielded long-length and high aspect ratio fibers at zero clearance. The imaging of fibers and sheets prepared using vacuum filtration were carried out using SEM. Viscosity studies of the refined pulp slurry confirmed the shear thinning behaviour. Tensile strength, burst strength, and porosity of sheets were measured to know the influence of refining parameters. Refined nanocellulose and commercial glass microfiber-based sheets were used as filters in dust capturing of PM_2.5 and PM₁₀ using dust sampler. This study reveals that micro/nanocellulose sheets obtained from Super masscolloider refining may be used an alternative to glass fiber-based sheets in capturing the fine dust (PM_2.5) having low moisture.

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超细研磨处理的漂白纳米纤维素过滤器对PM2.5和PM10粉尘颗粒的截留

无纺布玻璃纤维过滤器用于研究空气中颗粒物（PM）浓度。在本研究中，讨论了使用由高纵横比的漂白纳米纤维素纤维制成的过滤器收集PM。进行了无元素氯漂白，再用Lab谷式搅拌器和超级质量胶体进行精炼。以精炼时间（20和60 min）和磨石间隙（0.4、0.1、0.01和0）为参数，制得不同等级的微纳纤维素基片材。使用Lab valley加热器精炼可获得短长度纤维，而使用Super masscolloder精炼可获得长长度和高纵横比的零间隙纤维。利用扫描电镜对真空过滤制备的纤维和薄片进行了成像。精炼浆浆的粘度研究证实了剪切减薄的行为。测定了板材的拉伸强度、破裂强度和孔隙率，以了解精炼参数对板材的影响。采用精制纳米纤维素和商用玻璃微纤维片作为过滤器，采用粉尘取样器对PM2.5和PM10进行了捕集。本研究表明，通过超级质量胶体精制得到的微/纳米纤维素片材可以替代玻璃纤维基片材，用于捕获低水分的细粉尘（PM2.5）。

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.