Open AccessApplication of acoustic agglomeration for removing sulfuric acid mist from air stream
Author(s) -
A. Sadighzadeh,
Hassan Mohammadpour,
Leila Omidi,
Mohammad Javad Jafari
Publication year - 2018
Publication title -
sustainable environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 29
ISSN - 2468-2039
DOI - 10.1016/j.serj.2017.09.002
Subject(s) - mist , economies of agglomeration , sulfuric acid , inlet , sound pressure , materials science , airflow , acoustics , volumetric flow rate , range (aeronautics) , environmental science , analytical chemistry (journal) , meteorology , chemistry , composite material , mechanics , chemical engineering , metallurgy , chromatography , engineering , physics , mechanical engineering
The application of acoustic fields at high sound pressure levels (SPLs) for removing sulfuric acid mists from the air stream was studied. An acoustic agglomeration chamber was used to conduct the experiments. The studied SPLs ranged from 115 to 165 decibel (dB), with three inlet concentrations of acid mist at 5â10, 15â20, and 25â30 ppm. The air flow rates for conducting experiments were 20, 30, and 40 L minâ1. The concentration of sulfuric acid mist was measured using US Environmental Protection Agency Method 8 at inlet and outlet of the chamber. The resonance frequencies for experiments were found to be 852, 1410, and 3530 Hz. The maximum acoustic agglomeration efficiency of 86% was obtained at optimum frequency of 852 Hz. The analysis of variance test revealed significant differences between agglomeration efficiency at three resonance frequencies (p-value < 0.001). The maximum acoustic agglomeration efficiency was obtained at SPL level of 165 dB. High initial concentrations of acid mists and lower air flow rates enhance the acoustic agglomeration of mists. High removal efficiency of acid mists from air stream could be achieved by the application of acoustic agglomeration method with appropriate range of frequencies and SPLs. Keywords: Sulfuric acid, Mist, Acoustic agglomeration, SP