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学者姓名：严华祥
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Abstract ：
Permeable reactive barriers (PRBs) show great potential for remediating groundwater polluted by leachate from municipal solid waste landfills (MSWLs). In this study, we conducted a series of batch tests to investigate the effects of environmental factors (e.g., temperature, pollutant concentration, and pH in groundwater) and the composition of PRB materials (i.e., Fe and zeolite) on fulvic acid (FA) removal and also simulated PRB filled with different composition to investigate its effectiveness. The response surface method (RSM) was applied to optimize experimental conditions for single- and double-stage adsorption/desorption processes. Experimental findings demonstrated that an adsorbent mixture of 2.900 g Fe and 1.505 g zeolite achieved the highest adsorption efficiency of 67.22 % among four tested combinations. The double-stage adsorption process significantly enhances the FA removal efficiency compared to the single-stage process. Field-scale simulations indicated that the 1.0-m thick PRB developed in this study may achieve an FA adsorption efficiency of 67.31 %. Moreover, the implementation of PRB may lead to a significant reduction in downstream FA concentrations, with a decrease of 40.90 % compared to cases where only cut-off walls are employed. Therefore, the proposed Fe-Zeolite PRB system may serve as an alternative method to remedy polluted groundwater by landfill leachate.
Keyword ：
Adsorption Adsorption Artificial zeolite Artificial zeolite Municipal solid waste landfill Municipal solid waste landfill Permeable reactive barrier Permeable reactive barrier Pollutant transport Pollutant transport Zero-valent iron Zero-valent iron
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| GB/T 7714 | Xie, Haijian , Chen, Yang , Chen, Xiaobin et al. Fulvic acid removal from landfill contaminated groundwater by a permeable reactive barrier: From laboratory to field-scale analyses [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (6) . |
| MLA | Xie, Haijian et al. "Fulvic acid removal from landfill contaminated groundwater by a permeable reactive barrier: From laboratory to field-scale analyses" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12 . 6 (2024) . |
| APA | Xie, Haijian , Chen, Yang , Chen, Xiaobin , Yan, Huaxiang . Fulvic acid removal from landfill contaminated groundwater by a permeable reactive barrier: From laboratory to field-scale analyses . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (6) . |
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