Study on the effect of activated carbon on formaldehyde in clean workshop
10.3760/cma.j.issn.1001-9391.2019.12.007
- VernacularTitle: 活性炭对洁净厂房甲醛净化效果
- Author:
Huining WANG
1
;
Dongsheng NIU
1
;
Guoliang XU
1
;
Kaili XU
2
;
Jianfeng WANG
3
;
Jingxin XIE
3
;
Jue LI
1
Author Information
1. The Beijing Prevention and Treatment Hospital of Occupational Disease for Chemical Industry, Beijing 100093, China
2. Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 211189, China
3. Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
- Publication Type:Case Reports
- Keywords:
Activated carbon;
Formaldehyde;
Return air purification device;
Purification effect;
Clean workshop
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2019;37(12):906-910
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the effect of activated carbon on the purification of formaldehyde in the clean workshop return air purification device and its influencing factors.
Methods:From May to June 2018, choosed 4 different commercial activated carbons (bamboo charcoal, 1-3 mm, 3-5 mm; coconut shell charcoal, 6-12 mesh, 8-16 mesh) to make 5 types of activated carbon purification net. In the simulated clean plant laboratory, the detection of occupational disease hazards was used to test the purification effect of different types of activated carbon purification nets on formaldehyde.
Results:The purification effect of different types of activated carbon increased with the prolongation of purification time, and the difference was statistically significant (P<0.05) . Compared with other types of activated carbon, coconut shell charcoal (8-16 mesh, double layer) had the best purification effect, 15 min and 30 min purification efficiency was 58.72% and 85.20% respectively, and the difference was statistically significant (P<0.05) . The purification effect of double-layer coconut shell charcoal was better than single layer (P<0.05) . The purification effect of double-layer coconut shell charcoal (8-16 mesh) was better than double-layer coconut shell charcoal (6-12 mesh) , the difference was statistically significant (P<0.05) . Coconut shell charcoal (8-16 mesh, double layer) had better purification effect than bamboo charcoal (P<0.05) .
Conclusion:Different specific surface area, particle size, and thickness of activated carbon have a certain effect on the purification effect of formaldehyde, and its selection has a certain significance in improving the occupational health protection level in the clean plant, solving the safe use of return air and reducing energy consumption.
