Influence of Mining Activities on Quality of Groundwater

Ilavský, Ján; Barloková, Danka

doi:10.1007/698_2017_213

Cited by 4 publications

(1 citation statement)

References 40 publications

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“…Oxides are the most common form in nature [24]. Ammonia removal from water is accomplished using a variety of processes [25][26][27][28]. Many techniques are employed to recover Fe compounds from groundwater [29].…”

Section: Introductionmentioning

confidence: 99%

Novel Grafted Hydrogel for Iron and Ammonia Removal from Groundwater: A Synthesis and Computational Chemistry Study

Abd El-Salam,

El Shafey,

Samadi

et al. 2023

Gels

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Current research is moving towards iron and ammonia elimination from groundwater. Here, we are using a poly acrylic–poly acrylamide hydrogel that is grafted with 3-chloroaniline. This copolymer was synthesized by addition polymerization technique. The effects of agitation time, dosage and adsorbent temperature on the removal process sensitivity were investigated. The copolymer was described experientially and theoretically. Isothermal kinetic adsorption models are discussed. This hydrogel could be regenerated efficiently (98.3% removal of iron and 100% removal of ammonia). The density functional theory (DFT) method, using B3LYP/6-311G(d,p), and the LANL2DZ level of the theory were managed to investigate the stationary states of the grafted copolymer and the complexation energy of the hydrogel with the studied cations. DFT has been used to investigate the Natural Bond Orbital (NBO) properties to locate the most negative centers on the hydrogel. The calculated complexation energy showed hydrogel selectivity with regard to the studied cations.

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