TY - JOUR
T1 - Circular reutilization of coffee waste for sound absorbing panels
T2 - A perspective on material recycling
AU - Yun, Beom Yeol
AU - Cho, Hyun Mi
AU - Kim, Young Uk
AU - Lee, Sung Chan
AU - Berardi, Umberto
AU - Kim, Sumin
N1 - Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2020/5
Y1 - 2020/5
N2 - The increase in coffee consumption has led to increased production of coffee waste. Methods to recycle coffee waste are constantly being researched. Coffee powder is a porous material that can effectively be used to absorb sound. In this study, sound-absorbing panels were developed using coffee waste combined with resin. A sound absorption characterization of the new material was performed. Then, the noise reduction potential using coffee-waste sound absorbers was investigated in cafés. A café has several noise sources, such as coffee machines, music, and the voices of people. The noise reduction effect was evaluated using the ODEON simulation software together with the improvement in both the clarity and reverberation time in a case study café. In the investigated room, the acoustic definition (D50) increased up to 0.8, while the reverberation time (RT) reduced to 0.6 s. The results of this study demonstrate that the noise generated in the café was reduced by recycling the coffee waste produced as a by-product in the same building. Finally, this study presents a new construction material manufactured through coffee waste that is in turn applied to cafés where the coffee waste itself is produced.
AB - The increase in coffee consumption has led to increased production of coffee waste. Methods to recycle coffee waste are constantly being researched. Coffee powder is a porous material that can effectively be used to absorb sound. In this study, sound-absorbing panels were developed using coffee waste combined with resin. A sound absorption characterization of the new material was performed. Then, the noise reduction potential using coffee-waste sound absorbers was investigated in cafés. A café has several noise sources, such as coffee machines, music, and the voices of people. The noise reduction effect was evaluated using the ODEON simulation software together with the improvement in both the clarity and reverberation time in a case study café. In the investigated room, the acoustic definition (D50) increased up to 0.8, while the reverberation time (RT) reduced to 0.6 s. The results of this study demonstrate that the noise generated in the café was reduced by recycling the coffee waste produced as a by-product in the same building. Finally, this study presents a new construction material manufactured through coffee waste that is in turn applied to cafés where the coffee waste itself is produced.
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U2 - 10.1016/j.envres.2020.109281
DO - 10.1016/j.envres.2020.109281
M3 - Article
C2 - 32197123
AN - SCOPUS:85082113311
SN - 0013-9351
VL - 184
JO - Environmental Research
JF - Environmental Research
M1 - 109281
ER -