温湿度对建筑室内典型霉菌生长影响及其动力学模型

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Abstract A higher air humidity in buildings is easy to facilitate mold growth and spore diffusion, causing building structure damage and allergic symptoms or diseases on human, which is seriously harmful to indoor environment building and people health protection. This study took Aspergillus niger, a typical Aspergillus species in homes as an example, and experimentally studied the influence of environmental temperature and humidity (15/20/25/30℃, 60%/75%/85%) on the growth characteristics of Aspergillus niger, and established the growth kinetics models with time, temperature and humidity. The results showed that when the relative humidity was higher than 60%, the temperature was the main factor and the growth of Aspergillus niger was accelerated with increased temperature; while the influence of relative humidity was not significant. A Gompertz model was developed to quantify the growth of Aspergillus niger through building the relations with the colony diameter and growth time for Aspergillus niger; and the parameter μm was increased and λ was decreased (T≤25℃) with increasing temperature. A response surface model was further adopted as a secondary grade model to explore the growth characteristics of molds under the coupled influence of temperature and humidity. The relations between μm, λ and the temperature, relative humidity were quantified based on the model. The work provides a reference for the mold growth risk evaluation and source control in the real hot-humid environment in buildings.

Key words： temperature and humidity Aspergillus niger growth characteristics prediction model

Received: 18 July 2022

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X172

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	LU Bing-jie
	DU Chen-qiu
	GUO Xin-zhu
	YU Wei
	LI Bai-zhan

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LU Bing-jie,DU Chen-qiu,GUO Xin-zhu等. Effect of temperature and humidity on the growth of typical molds in buildings and its kinetics modeling[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(3): 1368-1377.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I3/1368

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