Peanut Shells as an Environmentally Beneficial Sound-Absorbing Material

This study investigated the prospect of using peanut shells as an alternative and green sound-absorbing material. The sound-absorption coefficients were determined after filling impedance tubes 30, 60, 90 mm in height with shells. ability increased increased, showing noise reduction coefficient (NRCs) 0.23, 0.43, 0.54 for 30-, 60-, 90-mm heights, respectively. In addition, sounds greater than 2,000 Hz, average 60- heights was 0.9. summary, found to have good properties comparable or better those bamboo, sisal, jute, wool, this research suggests that may be useful environmentally friendly