摘要
随着工业化进程的加快,硝基苯在化工行业的使用率越来越高,其对土壤、地下水、环境和人类健康带来的问题不容小觑。本文以硝基苯溶液在不同砂性介质中的穿透试验为例,分析了5种穿透曲线模型的适用性和优缺点,利用决定系数和协方差评价穿透模型的拟合效果。结果表明:Thomas模型不适用于描述硝基苯溶液在砂性介质中的穿透曲线,Boltzmann分布函数拟合程度较好,而Yoon-Nelson、Adams-Bohart、Wolborska这3种模型的拟合程度最好。Yoon-Nelson模型简单,拟合过程中不能获得溶质平衡吸附量,Wolborska模型稍显复杂,但拟合结果能够得到溶质平衡吸附量,这两个模型可根据实际需要选用。该研究结果可为硝基苯在土壤中的迁移规律研究提供基础参数,为后续不同条件下的穿透曲线模型的选取以及穿透模型参数求取提供借鉴。
With the acceleration of industrialization,the use of nitrobenzene in the chemical industry is getting more and more popular,which impact on soil,groundwater,environment and human health cannot be ignored.In this paper,the penetration experiments of nitrobenzene solution in different sandy strata are undertaken,the advantages and disadvantages of the five penetration curve models are analyzed,and the determination coefficient and covariance are used to evaluate the fitting effect of the penetration models.The results show that the Thomas model is not suitable for the penetration curve of nitrobenzene solution in sandy medium,and the Yoon-Nelson model,Adams-Bohart model,and Wolborska model have higher degree of ftting.The fitting model selection should consider the actual situation,and the fitting accuracy should not be pursued only,so the penetration model is chosen based on the actual situation.The Wolborska model should be selected to calculate the solute equilibrium adsorption amount,otherwise the simpler Yoon-Nelson model should be used.The study could provide some basic parameters for the study of nitrobenzene migration in soil,and could be referred for the selection of penetration curve model and the determination of parameters of penetration model under different conditions.
作者
姚思雨
李志萍
王淑丽
袁巧灵
刘莉莉
Yao Siyu;Li Zhiping;Wang Shuli;Yuan Qiaoling;Liu Lili(North China University of Water Resources and Electric Power,Zhengzhou 450045,China)
出处
《工程勘察》
2020年第11期40-46,共7页
Geotechnical Investigation & Surveying
基金
国家自然基金(41372260,41202178)
中国科学院流域地理学重点实验室开放基金(WSG2015004)
河南省高校科技创新人才支持计划(13HASTIT035)
关键词
硝基苯
穿透曲线
穿透模型
nitronitrobenzene
penetration curve
penetration model
