Open AccessModelling of Incident Wave Sound Absorption Coefficient of Paper Sludge Panels
Author(s) -
Tomas Astrauskas,
Raimondas Grubliauskas
Publication year - 2020
Publication title -
environmental engineering
Language(s) - English
Resource type - Conference proceedings
ISSN - 2029-7092
DOI - 10.3846/enviro.2020.820
Subject(s) - noise reduction coefficient , volume (thermodynamics) , waste management , attenuation coefficient , absorption (acoustics) , sound (geography) , environmental science , noise control , materials science , engineering , acoustics , composite material , porosity , physics , quantum mechanics , noise reduction
Paper sludge is the water treatment waste, which produced during paper production. Paper sludge (PS) wasteutilization is the common problem in the EU and internationally. According to authors Frías et al. paper sludge is themain waste in the paper processing factories, the percentage reach 35% of product volume. According to the wastemanagement directive No. 2008/98/EC, paper sludge waste should not be utilised in landfills. Such legislation generatesthe motivation of this study. This study deals with paper sludge as sound absorbing material.In this paper panels made of paper sludge is studied. Sound absorption coefficient of the panels predicted withHoroshenkov and Swift acoustic model for granular media. The aim of this paper is to predict sound absorptioncoefficient using non-acoustic parameters of the material.