FROM WASTE TO DESIGN: THE POTENTIALS OF RECYCLED COFFEE, TEA RESIDUE AND CARDBOARD CUPS AS ACOUSTICAL PANELS

Sel E., Düzova İ., Sü Gül Z.

10th Convention of the European Acoustics Association, EAA 2023, Torino, Italy, 11 - 15 September 2023, (Full Text)

  • Publication Type: Conference Paper / Full Text
  • City: Torino
  • Country: Italy
  • Keywords: room acoustic, sound absorption materials, sustainability, waste materials
  • TED University Affiliated: No

Abstract

This study aims to enhance acoustical comfort levels in indoor environments by addressing the excessive residue disposal and usage of single-use cardboard cups resulting from the increasing consumption of coffee and tea. This research is a follow-up phase of a study initiated to increase acoustical comfort levels in architectural design studios by research and production of sound absorptive panels. In the first phase, coffee and tea residues are used as a system and their sound absorption performance is tested by impedance tube measurements that showed promising potentials. This second phase has incorporated recycled cardboard cups and recycled coffee bags as a front layer to the previously tested coffee panels. As it is not possible to test the panels by impedance tube due to their sizes, the panels are produced in an overall 10 m2 to be tested in a naked design studio having dimensions closer to a reverberation chamber. Variations of the product are tested and compared. Results highlight the additional contribution of cupboards to the sound absorption performance of the backing materials. Thus, the system has the potential to be a cost-minimized, sustainable and biodegradable acoustic solution with an aesthetic value to be applied in indoor spaces.