Assessment and prediction of the effect of ageing on the adsorption of nonylphenol in black carbon-sediment systems  

作　　者：Guanghuan Cheng Han Liu Tailu Dong Qiuyu Li Mingyang Sun Liping Lou 

机构地区：[1]Environmental Science,College of Engineering,China Pharmaceutical University,Nanjing 211198,China [2]Department of Environmental Engineering,Zhejiang University,Hangzhou 310058,China [3]Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC),Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(AEET),School of Environmental Science and Engineering,Nanjing University of Information Science&Technology(NUIST),Nanjing 210044,China [4]Key Laboratory of Water Pollution Control and Environmental Safety of Zhejiang Province,Hangzhou 310058,China

出　　处：《Journal of Environmental Sciences》2021年第4期216-225,共10页环境科学学报（英文版）

基　　金：supported by the Natural Science Foundation for Youths of Jiangsu Province of China(Nos.BK20190568 and BK20160945);the Key Laboratory of Water Pollution Control and Environmental Safety of Zhejiang Province(No.2018ZJSHKF02);the Basic Research Business Expenses Special Project of China Pharmaceutical University(No.2632018PY01);the Student Innovation Project of China Pharmaceutical University;the National Natural Science Foundation for Youths of China(No.21607078);the National Natural Science Foundation of China(No.41877463);Natural Science Foundation of Zhejiang Province(No.LZ19D030001)。

摘　　要：Black carbon(BC)is a promising sediment amendment,as proven by its considerable adsorption capacity for hydrophobic organic pollutants and accessibility,but its reliability when used for the removal of pollutants in natural sediments still needs to be evaluated.For example,the ageing process,resulting in changing of surface physicochemical properties of BC,will decrease the adsorption capacity and performance of BC when applied to sediment pollution control.In this study,how the ageing process and BC proportion affect the adsorption capacity of BC-sediment systems was modelled and quantitatively investigated to predict their adsorption capacity under different ageing times and BC additions.The results showed that the ageing process decreased the adsorption capacity of both BC-sediment systems,due to the blockage of the non-linear adsorption sites of BC.The adsorption capacity of rice straw black carbon(RC)-sediment systems was higher than that of fly ash black carbon(FC)-sediment systems,indicating that RC is more efficient than FC for nonylphenol(NP)pollution control in sediment.The newly established model for the prediction of adsorption capacity fits the experimental data appropriately and yields acceptable predictions,especially when based on parameters from the Freundlich model.However,to fully reflect the influence of the ageing process on BC-sediment systems and make more precise predictions,it is recommended that future work considering more factors and conditions,such as modelling of the correlation between the adsorption capacity and the pore volume or specific surface area of BC,be applied to build an accurate and sound model.

关 键 词：Black carbon(BC) Nonylphenol(NP) Ageing SORPTION SEDIMENT 

分 类 号：X52[环境科学与工程—环境工程]