Characterizing the capacity of hyporheic sediments to attenuate groundwater nitrate loads by adsorption

Water Research
Aminreza Meghdadi

Abstract

Nitrate has been recognized as a global threat to environmental health. In this regard, the hyporheic zone (saturated media beneath and adjacent to the stream bed) plays a crucial role in attenuating groundwater nitrate, prior to discharge into surface water. While different nitrate removal pathways have been investigated over recent decades, the adsorption capacity of hyporheic sediments under natural conditions has not yet been identified. In this study, the natural attenuation capacity of the hyporheic-sediments of the Ghezel-Ozan River, located in the north-west of Iran, was determined. The sampled sediments (from 1 m below the stream bed) were characterized via XRD, FT-IR, BET, SEM, BJH, and Zeta potential. Nitrate adsorption was evaluated using a batch experiment with hyporheic pore-water from each study site. The study was performed in the hyporheic sediments of two morphologically different zones, including Z1 located in the parafluvial zone having the clay sediment texture (57.8% clay) with smectite/Illite mixed layer clay type and Z2 located in the river confluence area containing silty clay sediment texture (47.6% clay) with smectite/kaolinite mixed layer clay type. Data obtained from the batch experiment were subjec...Continue Reading

References

Dec 19, 2007·The Science of the Total Environment·Anne Kristine Søvik, Pål Tore Mørkved
Aug 30, 2008·Water Research·Michael O RivettChrystina D Bemment
Jul 8, 2010·Journal of Hazardous Materials·Rifaqat A K Rao, Fouzia Rehman
Oct 15, 2010·Chemosphere·Helen Helena Dos SantosAnna Slawska-Waniewska
Aug 9, 2011·Journal of Colloid and Interface Science·Yanhui LiDehai Wu
Jan 21, 2012·Journal of Contaminant Hydrology·Gautham P Jeppu, T Prabhakar Clement
Aug 4, 2012·Bioresource Technology·A MirmohseniF Tasselli

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Citations

Jun 15, 2019·Water Research·John J WeatherillMichael O Rivett

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