Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tube
Subject to the blowing air, fungal spores can be aerosolized from the colonies growing on cooling coils. The blowing air may accelerate and decelerate when passing a coil. The caused spore detachment may be different, when the fungal colonies grow on different positions of the coil. This study inves...
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2019-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_02030.pdf |
| _version_ | 1818446897474437120 |
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| author | Li Xian Zhang Tengfei Wang Shugang |
| author_facet | Li Xian Zhang Tengfei Wang Shugang |
| author_sort | Li Xian |
| collection | DOAJ |
| description | Subject to the blowing air, fungal spores can be aerosolized from the colonies growing on cooling coils. The blowing air may accelerate and decelerate when passing a coil. The caused spore detachment may be different, when the fungal colonies grow on different positions of the coil. This study investigated the aerosolization of Aspergillus niger spores from a colony on a circular tube in a wind tunnel. The colony was first cultured in the carved groove along the longitudinal tube, and then the spores were aerosolized by a gradual increase of the blowing air speed. The grown colony on four different positions of the coil surface were blown for aerosolization. In addition, the airflow surrounding the circular tube was numerically solved to estimate the drag force for aerosolization of the spores. The results revealed that the collected airborne spores when the colonies were located tangentially to the upcoming airflow were six to eight times of those when the colonies were located parallel with the upcoming airflow for both the 4-day-old and 10-day-old colonies. The local air speeds in different positions of the tube were highly different from the inlet air speed of the wind tunnel. Such difference should be accounted for when estimating the drag force to aerosolize the fungal spores on the coils. |
| first_indexed | 2024-12-14T19:55:01Z |
| format | Article |
| id | doaj.art-d07023f3617c4a7da87c6b573e3bc263 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-14T19:55:01Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-d07023f3617c4a7da87c6b573e3bc2632022-12-21T22:49:18ZengEDP SciencesE3S Web of Conferences2267-12422019-01-011110203010.1051/e3sconf/201911102030e3sconf_clima2019_02030Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tubeLi Xian0Zhang TengfeiWang Shugang1School of Civil Engineering, Dalian University of Technology (DUT)School of Civil Engineering, Dalian University of Technology (DUT)Subject to the blowing air, fungal spores can be aerosolized from the colonies growing on cooling coils. The blowing air may accelerate and decelerate when passing a coil. The caused spore detachment may be different, when the fungal colonies grow on different positions of the coil. This study investigated the aerosolization of Aspergillus niger spores from a colony on a circular tube in a wind tunnel. The colony was first cultured in the carved groove along the longitudinal tube, and then the spores were aerosolized by a gradual increase of the blowing air speed. The grown colony on four different positions of the coil surface were blown for aerosolization. In addition, the airflow surrounding the circular tube was numerically solved to estimate the drag force for aerosolization of the spores. The results revealed that the collected airborne spores when the colonies were located tangentially to the upcoming airflow were six to eight times of those when the colonies were located parallel with the upcoming airflow for both the 4-day-old and 10-day-old colonies. The local air speeds in different positions of the tube were highly different from the inlet air speed of the wind tunnel. Such difference should be accounted for when estimating the drag force to aerosolize the fungal spores on the coils.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_02030.pdf |
| spellingShingle | Li Xian Zhang Tengfei Wang Shugang Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tube E3S Web of Conferences |
| title | Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tube |
| title_full | Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tube |
| title_fullStr | Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tube |
| title_full_unstemmed | Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tube |
| title_short | Aerosolization of Aspergillus niger spores from colonies on different positions of a circular tube |
| title_sort | aerosolization of aspergillus niger spores from colonies on different positions of a circular tube |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_02030.pdf |
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