吸附
人工湿地
六价铬
湿地
废水
铬
环境科学
环境工程
地下水流
环境化学
生物量(生态学)
化学
土壤科学
地下水
生态学
工程类
岩土工程
吸附
有机化学
生物
作者
Ioannis Karametos,Ioanna A. Vasiliadou,Vassiliki Papaevangelou,Mar-Yam Sultana,Athanasia G. Tekerlekopoulou,D.V. Vayenas,Christos S. Akratos
标识
DOI:10.1016/j.scitotenv.2024.170088
摘要
Constructed wetlands (CWs) have been extensively used in Cr(VI) removal and have proven their ability to achieve high removal efficiencies. Although, numerous studies have been published in the past years presenting experimental results of CWs treating wastewater with Cr(VI) concentrations, a mathematical modeling describing the processes for Cr(VI) removal in CWs is lacking. In this work a mathematical model was developed, able to accurately describe the main mechanisms and reactions (i.e. biological reduction, plant biomass uptake-sorption) which are responsible for Cr(VI) removal in a wetland system. The model was calibrated and validated using data from a previously reported experimental study of horizontal subsurface CWs. Mathematical simulation indicates that in an unplanted wetland Cr(VI) was mainly removed through the diffusion/reduction process inside biofilm, attached on the porous media, while in the planted unit Cr(VI) was mainly removed through the sorption process to the root system of the plants. The developed model's simulations showed high correlation between predicted and experimental data, indicating that the proposed model can be used to design and predict full scale constructed wetland process for Cr(VI) removal.
科研通智能强力驱动
Strongly Powered by AbleSci AI