Environmental chemistry response of beryllium to diverse soil-solution conditions at a waste disposal site

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dc.contributor.authorIslam, MRen_AU
dc.contributor.authorSanderson, Pen_AU
dc.contributor.authorJohansen, MPen_AU
dc.contributor.authorPayne, TEen_AU
dc.contributor.authorNaidu, Ren_AU
dc.date.accessioned2023-03-21T03:15:40Zen_AU
dc.date.available2023-03-21T03:15:40Zen_AU
dc.date.issued2022-11-29en_AU
dc.date.statistics2023-03-20en_AU
dc.description.abstractThis study evaluated how the variation in different sorption conditions of beryllium (Be) in soil–water systems (electrolytes; ionic strengths; competing, counter, and co-existing ions; concentrations of Be and soil; and temperature) affected Be's environmental behaviour. For this reason, potentially contaminated soil was collected from a legacy waste site near Sydney, Australia. The sorption–desorption plateau for Be was found at >12.5 g L−1 (soil/solution), considering higher sorption and limited desorption. Variable surface charges developed by different added ions (competing ions, counter ions, and co-existence of all ions) were not always correlated with Be sorption. However, effects of added ions in Be sorption (increased by counter ions and decreased by competing ions) primarily occurred at low pH, with no noticeable changes at pH > 6 due to the hydration and precipitation behaviour of Be at higher pH. Both laboratory data and modelling indicated the substantial effect of counter ions on increased sorption of Be. Relatively higher amounts of sorption under the co-existence of all added ions were suggested from synergistic actions. Sorption was favourable (KL > 0, and 0 < RL < 1) across all concentrations and temperatures at pH 5.5, and high retention (84–97%) occurred after four desorption cycles indicated specific sorption. The sorption process was exothermic (ΔH > −43 kJ mole−1), while desorption was endothermic (ΔH > +78.4 kJ mole−1). All sorption–desorption reactions were spontaneous (ΔG = −Ve), and executed without any structural deformation (ΔS = nearly zero) of soil particles. However, the effect of temperature on desorption was influenced by the concentrations of Be. Higher retention and different sorption–desorption parameters (Kd-desorption > Kd-sorption; Kf-desorption > Kf-sorption; ndesorption/nsorption < 1) indicate limited mobility of Be and the presence of desorption hysteresis in the studied soil under the experimental conditions. © Royal Society of Chemistryen_AU
dc.description.sponsorshipWe acknowledge the University of Newcastle, CRC for Contamination Assessment and Remediation of the Environment, and the Australian Nuclear Science and Technology Organisation for providing financial support and instrumental facilities to complete this work. Special thanks to Global Centre for Environmental Remediation and their expert analytical team, who help with the analysis of the samples.en_AU
dc.identifier.citationIslam, M. R., Sanderson, P., Johansen, M. P., Payne, T. E., & Naidu, R. (2023). Environmental chemistry response of beryllium to diverse soil-solution conditions at a waste disposal site Environmental Science: Processes & Impacts, 25(1), 94-109. doi:10.1039/D2EM00313Aen_AU
dc.identifier.issn2050-7887en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleEnvironmental Science: Processes & Impactsen_AU
dc.identifier.pagination94-109en_AU
dc.identifier.urihttps://doi.org/10.1039/D2EM00313Aen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14710en_AU
dc.identifier.volume25en_AU
dc.language.isoenen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.subjectEnvironmenten_AU
dc.subjectChemistryen_AU
dc.subjectBerylliumen_AU
dc.subjectSoilsen_AU
dc.subjectWaste disposalen_AU
dc.subjectSorptionen_AU
dc.subjectWateren_AU
dc.subjectNew South Walesen_AU
dc.subjectAustraliaen_AU
dc.titleEnvironmental chemistry response of beryllium to diverse soil-solution conditions at a waste disposal siteen_AU
dc.typeJournal Articleen_AU
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