汽车油漆渣VOCs释放通量预测模型的构建和验证

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摘要汽车生产过程中产生大量的油漆渣释放的VOCs会对环境和人体造成伤害.然而,关于汽车油漆渣VOCs源释放定量表征模型的研究很少.因此,本文基于非法管理场景的汽车油漆渣,建立了累积VOCs释放行为扩散控制模型.该模型具有两个关键的特征参数:扩散系数(D_m)和初始散发浓度(C_m,0),可以通过我们提出的ER-history方法同时获得.材料VOCs的散发速率和浓度是关键参数的函数,测定散发关键参数是研究材料VOCs散发规律的基础.实验结果表明,1-丁醇、乙酸丁酯、1,2,4-三甲苯和1-乙基-4-甲苯是漆渣释放的主要物质.此外,利用环境测试舱的数据对模型进行了验证,证明了模型的可靠性和说服力.该模型对疏水VOCs释放的预测比亲水性VOCs的预测更准确.C_m,0和D_m的增加有促进VOCs累积释放的趋势.结果为快速测量模型参数的实验设计提供了新的见解,并为评估油漆渣VOCs累积释放提供了理论基础.

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	刘义
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	黄泽春
	黄启飞
	刘婷婷

关键词 ：挥发性有机化合物, 扩散行为, 油漆渣, 模型, 参数

Abstract：A lot of paint sludge is produced in the process of automotive production, from which VOCs emissions can cause harm to the environment and human body. However, there are few studies on quantitative characterization models of VOCs source release from automotive paint sludge. In this paper, a diffusion control model for characterizing the emission behaviors of cumulative VOCs from automotive oil-based paint sludge based on the worst field management scenario. The model has two key characteristic parameters: the diffusion coefficient (D_m) and the initial emittable concentration (C_m,0), both of which can be obtained simultaneously by our proposed ER-history method. The emission rate and concentration of material VOCs are functions of key parameters, and the determination of key emission parameters is the basis of studying the emission law of material VOCs. The results showed that 1-butanol, butyl acetate, 1,2, 4-tritylene and 1-ethyl-4-toluene were the main substances released from oil-based paint sludge. In addition, the model is validated by the data of the environmental test chamber, which proves the reliability and persuasiveness of the model. The model is more accurate for predicting hydrophobic VOCs release than those of hydrophilic. Moreover, the increase of C_m,0 and D_m has a tendency to promote the cumulative release of VOCs. This result provides new insights into experimental design for rapid measurement of model parameters and a theoretical basis for evaluating the cumulative release of VOCs from paint sludge.

Key words： VOCs diffusing behavior paint sludge model parameter

收稿日期: 2023-10-23

PACS:

X705

基金资助:生态环境部危险废物鉴别与风险控制重点实验室开放基金;中央级公益性科研院所基本科研业务费专项(2022YSKY-06);云南省基础研究计划项目(202301BE070001-017和202401CF070139);昆明理工大学分析测试基金(2023T20230037)

通讯作者: 李彬,教授,libin@kust.edu.cn；刘婷婷,副研究员,ltt0706@163.com E-mail: libin@kust.edu.cn;ltt0706@163.com

作者简介: 刘义(1999-)男,云南昭通人,昆明理工大学硕士研究生,研究方向为固废管理与风险评估.1816247958@qq.com.

引用本文:

刘义, 李彬, 颜渝森, 刘泽伟, 黄泽春, 黄启飞, 刘婷婷. 汽车油漆渣VOCs释放通量预测模型的构建和验证[J]. 中国环境科学, 2024, 44(6): 2985-2993. LIU Yi, LI Bin, YAN Yu-sen, LIU Ze-wei, HUANG Ze-chun, HUANG Qi-fei, LIU Ting-ting. Establishment and validation of VOCs emission flux prediction model for automotive paint sludge. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(6): 2985-2993.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2024/V44/I6/2985

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