Optimizing hygroscopic performance of innovative and sustainable gypsum biocomposites through hybrid biowaste upcycling

IF 2.7 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Material Cycles and Waste Management Pub Date : 2025-02-13 DOI:10.1007/s10163-025-02171-1

Sameh Balti, Abderrahim Boudenne, Naima Belayachi, Besma Mellah, Noureddine Hamdi

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Abstract

Wood-based biowaste represents a plentiful biomaterial on our planet, and harnessing this industrial waste for sustainable construction products is strongly advocated due to its insulation and hygroscopic properties. The primary aim of this work is to implement innovative bio-based gypsum materials by incorporating a mixture of untreated wood and paper wastes. Furthermore, the study aims to comprehensively analyze the hygroscopic properties of these bio-based gypsum composites, comparing them to traditional gypsum boards. To better understand the hydric behavior and particularly the relationship between the porous microstructure and the different properties, several tests including porosity, capillary absorption, sorption isotherm, water vapor permeability, and moisture buffer value (MBV) were performed for various formulations. Moreover, it shows that the biobased composite exhibits a remarkable moisture absorption capacity, nearly 15 times higher than that of the reference sample, and displays a high-water vapor permeability, owing to a significant enlargement in critical pore size. Likewise, all gypsum formulations display MBV values exceeding 2.00 g/(m².% RH) indicating an excellent ability for moisture regulation. Finally, the findings highlight the potential to create innovative gypsum material, using recycled cellulose waste to provide natural ventilation and moisture regulation through a circular economy approach.

Graphical abstract

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通过混合生物废物升级循环优化创新和可持续的石膏生物复合材料的吸湿性能

基于木材的生物废物代表了我们星球上丰富的生物材料，由于其绝缘和吸湿特性，强烈提倡利用这种工业废物生产可持续建筑产品。这项工作的主要目的是通过将未经处理的木材和废纸混合在一起，实现创新的生物基石膏材料。此外，本研究旨在全面分析这些生物基石膏复合材料的吸湿性能，并将其与传统石膏板进行比较。为了更好地了解水行为，特别是孔隙微观结构与不同性能之间的关系，对不同配方进行了孔隙度、毛细吸收、吸附等温线、水蒸气渗透率和水分缓冲值（MBV）等测试。此外，生物基复合材料表现出显著的吸湿能力，比参考样品高出近15倍，并且由于临界孔径的显着增大而表现出较高的水蒸气渗透性。同样，所有石膏配方的MBV值都超过2.00 g/(m2)。% RH)，表明具有良好的湿度调节能力。最后，研究结果强调了创造创新石膏材料的潜力，利用回收的纤维素废物通过循环经济方法提供自然通风和湿度调节。图形抽象

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来源期刊

Journal of Material Cycles and Waste Management 环境科学-环境科学

CiteScore

5.30

自引率

16.10%

发文量

205

审稿时长

4.8 months

期刊介绍： The Journal of Material Cycles and Waste Management has a twofold focus: research in technical, political, and environmental problems of material cycles and waste management; and information that contributes to the development of an interdisciplinary science of material cycles and waste management. Its aim is to develop solutions and prescriptions for material cycles. The journal publishes original articles, reviews, and invited papers from a wide range of disciplines related to material cycles and waste management. The journal is published in cooperation with the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM).