SUSTAINABLE ACOUSTIC ENCLOSURE USING RUBBERWOOD PROCESSING BY-PRODUCTS AND NATURAL RUBBER LATEX
DOI:
https://doi.org/10.55766/sujst13728Keywords:
Acoustic enclosure, Biomass bottom ash, Industrial noise control, Rubberwood by-productsAbstract
Noise generated by industrial machinery, particularly air compressors, requires effective and sustainable control measures. This study developed and evaluated a detachable acoustic enclosure incorporating eco-friendly sound-absorbing panels fabricated from rubberwood processing by-products-sawdust and biomass bottom ash-bonded with natural rubber latex (NRL) as a bio-based binder. The optimal compositions for achieving dimensional stability, adhesion, and moldability were identified through panel fabrication experiments as sawdust–NRL composite (1:1.5) and sawdust/ash-NRL composite (0.5:0.5:1). Physical characterization showed that sawdust/ash composite panels exhibited higher bulk density due to ash-induced matrix densification. The acoustic performance of the developed materials was assessed over the 125-4,000 Hz frequency range using wooden enclosures lined with various absorptive materials, with results revealing clear frequency-dependent noise attenuation. At low frequencies (125-250 Hz), the wooden enclosure without lining provided the greatest attenuation due to resonant panel absorption. In the mid-frequency range (250-2,000 Hz), sawdust and sawdust/ash composite panels exhibited higher sound attenuation efficiency than conventional polyurethane and polystyrene foams, highlighting the role of porous biomass structures in acoustic energy dissipation. At high frequencies (2,000-4,000 Hz), the biomass-based panels outperformed the synthetic foams, with sawdust composites achieving noise reductions of up to 25 dBA, corresponding to ~95% reduction based on linear sound pressure levels. This study demonstrates the potential of biomass-based acoustic materials as practical and sustainable solutions for noise control in small-scale industrial environments, offering an effective alternative to conventional synthetic absorbers for improving occupational acoustic conditions.
References
Agency for Toxic Substances and Disease Registry [ATSDR]. (2004). Toxicological profile for synthetic vitreous fibers. U.S. Department of Health and Human Services, Public Health Service. https://stacks.cdc.gov/view/cdc/7009/
Alishiri, M., Hemmasi, A. H., Khademi Eslam, H. K., Basirjafari, S., & Talaeiypour, M. (2021). Evaluation and comparison the properties of acoustic boards made of date palm fiber. BioResources, 16(4), 7702-7715. https://doi.org/10.15376/biores.16.4.7702-7715
Asdrubali, F., D’Alessandro, F., & Schiavoni, S. (2015). A review of unconventional sustainable building insulation materials. Sustainable Materials and Technologies, 4, 1-17. https://doi.org/10.1016/j.susmat.2015.05.002
Bergman, R. (2021). Drying and control of moisture content and dimensional changes. In R. J. Ross & J. R. Anderson (Eds.), Wood handbook-Wood as an engineering material (General Technical Report FPL-GTR-282, pp. 13-1-13-20). U.S. Department of Agriculture, Forest Service, Forest Products Laboratory.
Cao, L., Fu, Q., Si, Y., Ding, B., & Yu, J. (2018). Porous materials for sound absorption. Composites Communications, 10, 25-35. https://doi.org/10.1016/j.coco.2018.05.001
Cox, T. J., & D’Antonio, P. (2016). Acoustic absorbers and diffusers: Theory, design and application (3rd ed.). CRC Press.
Fahy, F. J., & Gardonio, P. (2007). Sound and structural vibration: Radiation, transmission and response (2nd ed.). Academic Press.
Hesterberg, T. W., & Hart, G. A. (2001). Synthetic vitreous fibers: A review of toxicology research and its impact on hazard classification. Critical Reviews in Toxicology, 31(1), 1-53. https://doi.org/10.1080/20014091111668
International Organization for Standardization [ISO]. (2013). Acoustics-Estimation of noise-induced hearing loss (ISO 1999:2013).
Jaturonlux, N., & Ratanawilai, T. (2023). Performance of wood composites with natural fiber as sound absorber of building materials. Suranaree Journal of Science and Technology, 30(2), 010220(1-10). https://doi.org/10.55766/sujst-2023-02-e02017
Kabir, M. M., Wang, H., Lau, K. T., & Cardona, F. (2012). Chemical treatments on plant-based natural fibre reinforced polymer composites: An overview. Composites Part B: Engineering, 43(7), 2883-2892. https://doi.org/10.1016/j.compositesb.2012.04.053
Korjakins, A., Sahmenko, G., & Lapkovskis, V. (2025). A short review of recent innovations in acoustic materials and panel design: Emphasizing wood composites for enhanced performance and sustainability. Applied Sciences, 15(9), 4644. https://doi.org/10.3390/app15094644
Krainoi, A., Sripornsawat, B., Toh-ae, P., Kitisavetjit, W., Pittayavinai, P., Tangchirapat, W., Kalkornsurapranee, E., Johns, J., & Nakaramontri, Y. (2022). Utilization of high and low calcium oxide fly ashes as the alternative fillers for natural rubber composites: A waste to wealth approach. Industrial Crops and Products, 188, Article 115589. https://doi.org/10.1016/j.indcrop.2022.115589
Liang, M., Wu, H., Liu, J., Shen, Y., & Wu, G. (2022). Improved sound absorption performance of synthetic fiber materials for industrial noise reduction: A review. Journal of Porous Materials, 29(3), 869-892. https://doi.org/10.1007/s10934-022-01219-z
Lincy, S. J., Gopalsamy, S., Nandhini, B., Sundarapandian, M., & Balasubramanian, S. (2025). Harnessing mycelium bio-composite panels for improved acoustic and flame-retardant properties for architectural applications: A comprehensive review. Frontiers in Advanced Materials Research, 7(1), 1-27. https://doi.org/10.34256/famr2511
Messiry, M. E., & Ayman, Y. (2021). Investigation of sound transmission loss of natural fiber/rubber crumbs composite panels. Journal of Industrial Textiles, 51(3_suppl), 5347S-5369S. https://doi.org/10.1177/15280837211039574
Mohammadi, M., Taban, E., Tan, W. H., Che Din, N. B., Putra, A., & Berardi, U. (2024). Recent progress in natural fiber reinforced composite as sound absorber material. Journal of Building Engineering, 84, Article 108514. https://doi.org/10.1016/j.jobe.2024.108514
National Institute for Occupational Safety and Health [NIOSH]. (1998). Criteria for a recommended standard: Occupational noise exposure-Revised criteria 1998 (DHHS (NIOSH) Publication No. 98-126). U.S. Department of Health and Human Services, Centers for Disease Control and Prevention.
Qi, L., Xu, J., & Liu, K. (2019). Porous sound-absorbing materials prepared from fly ash. Environmental Science and Pollution Research, 26(22), 22264-22272. https://doi.org/10.1007/s11356-019-05573-5
Rastegar, N., Ershad-Langroudi, A., Parsimehr, H., & Moradi, G. (2022). Sound-absorbing porous materials: A review on polyurethane-based foams. Iranian Polymer Journal, 31(1), 83-105. https://doi.org/10.1007/s13726-021-01006-8
Sarmiento, N. J. M., Serrano, A. D., Sunga, M. A. R., Yunting, S. A., Zapata, J. P., Culala, J. C., & Cayanan, F. (2024). Natural silencer: Assessing the acoustic excellence of fiberboard composites derived from sawdust and coconut husk fiber for soundproofing. International Journal of Scientific Research and Engineering Development, 7(3), 1724-1738.
Schlupp, F., Page, J., Djelal, C., & Libessart, L. (2024). Use of biomass bottom ash as an alternative solution to natural aggregates in concrete applications: A review. Materials, 17(18), Article 4504. https://doi.org/10.3390/ma17184504
Sintharm, P., & Phisalaphong, M. (2021). Green natural rubber composites reinforced with black/white rice husk ashes: Effects of reinforcing agent on film’s mechanical and dielectric properties. Polymers, 13(6), Article 882. https://doi.org/10.3390/polym13060882
Venkatesan, B., Kannan, V., Raja Priya, P., & Karthiga Shenbagam, N. (2025). Utilizing agricultural waste materials for the development of sustainable sound absorption materials. Nature Environment and Pollution Technology, 24(S1), 285-394. https://doi.org/10.46488/NEPT.2024.v24iS1.030
Wilk-Jakubowski, J. L., Kuchcinski, A., Pawlik, L., & Wilk-Jakubowski, G. (2025). Advanced sound insulating materials: An analysis of material types and properties. Applied Sciences, 15(11), Article 6156. https://doi.org/10.3390/app15116156
Xie, H., Li, Y., Kahya, E., Wang, B., Ge, X., & Li, G. (2022). Physical properties and environmental impact of sound barrier materials based on fly ash cenosphere. Buildings, 12(3), Article 322. https://doi.org/10.3390/buildings12030322
Zhang, X., Yin, Z., Xiang, S., Yan, H., & Tian, H. (2024). Degradation of polymer materials in the environment and its impact on the health of experimental animals: A review. Polymers, 16(19), Article 2807. https://doi.org/10.3390/polym16192807
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