Open AccessThe characteristics purifying formaldehyde of air purification system for haze-absorbing wall
Author(s) -
Kai Ji,
Chuanling Qiao,
Zhen Zhang,
Zhiyong Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/634/1/012025
Subject(s) - formaldehyde , air purification , haze , adsorption , indoor air , inlet , materials science , air velocity , chemistry , chromatography , environmental science , environmental engineering , mechanics , organic chemistry , physics , mechanical engineering , engineering
Formaldehyde in indoor air is very harmful to human body. In this paper, a haze-absorbing wall air purification system was constructed based on assembly buildings. The experimental device was set up with bulk activated carbon as adsorption material. The purification performance for formaldehyde of the system was studied experimentally. The effects of air velocity and air passage size on formaldehyde purification efficiency were analysed. It was found that the haze-absorbing wall system can effectively purify the formaldehyde in the air. After the experiment, the purification efficiency of the system to the formaldehyde is more than 90% under all conditions of the experiment. With the increase of inlet air velocity, the purification efficiency of haze-absorbing wall to formaldehyde increases first and then decreases, and the peak value appears when the air velocity is 0.4m/s. When the air passage is 20cm and the air velocity is 0.4m/s, the haze-absorbing wall has the best purification performance for formaldehyde.