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Mechanism of groundwater arsenic removal by goethite-coated mineral sand
journal contribution
posted on 2023-02-28, 02:25 authored by J D Cashion, S A Khan, A F Patti, S Adeloju, Will GatesWill GatesSkye sand (Vic, Australia) has been considered for arsenic removal from groundwater. Analysis showed that the silica sand is coated with poorly crystalline goethite, hematite and clay minerals. Mössbauer spectra taken following arsenic adsorption revealed changes in the recoilless fraction and relaxation behaviour of the goethite compared to the original state, showing that the goethite is the main active species.