https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Arsenic bioaccessibility and fractionation in abandoned mine soils from selected sites in New South Wales, Australia and human health risk assessment https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43514 Wed 21 Sep 2022 11:18:21 AEST ]]> Dissolution and redistribution of trace elements and nutrients during dredging of iron monosulfide enriched sediments https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33206 Wed 12 Sep 2018 16:43:08 AEST ]]> Impact of wastewater derived dissolved organic carbon on reduction, mobility, and bioavailability of As(V) and Cr(VI) in contaminated soils https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33205 Wed 12 Sep 2018 16:43:02 AEST ]]> Sources, distribution, bioavailability, toxicity, and risk assessment of heavy metal(loid)s in complementary medicines https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30603 Wed 09 Mar 2022 15:58:43 AEDT ]]> Cadmium solubility and bioavailability in soils amended with acidic and neutral biochar https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37009 Wed 05 Aug 2020 14:09:19 AEST ]]> An X-ray absorption spectroscopic study of the Fe(II)-induced transformation of Cr(VI)-substituted schwertmannite https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50656 Wed 01 May 2024 12:31:03 AEST ]]> Impact of Sulfur on Biofortification and Speciation of Selenium in Wheat Grain Grown in Selenium-Deficient Soils https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46968 Tue 30 Apr 2024 09:39:02 AEST ]]> Selenium Accumulation and Speciation in Chickpea (Cicer arietinum) Impacted by S in Soils: Potential for Biofortification https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47026 Tue 13 Dec 2022 12:58:24 AEDT ]]> Antimony(V) Incorporation into Schwertmannite: Critical Insights on Antimony Retention in Acidic Environments https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51642 Tue 12 Sep 2023 20:16:38 AEST ]]> Antimony speciation, phytochelatin stimulation and toxicity in plants https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51641 Tue 12 Sep 2023 20:15:54 AEST ]]> Designing advanced biochar products for maximizing greenhouse gas mitigation potential https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29473 Thu 21 Oct 2021 12:52:02 AEDT ]]> Comparative sorption of chromium species as influenced by pH, surface charge and organic matter content in contaminated soils https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33207 o), Fe(III) oxide and cow manure increased Cr(VI) retention. The effect of So on Cr(VI) sorption is mediated through a decrease in soil pH, which facilitated an increased retention of Cr(VI) as measured by Freundlich sorption coefficient from 0.079 (in pristine soil, pH7.15) to 21.06L/kg (in So amended soil, pH4.08). Also, Fe(III) oxide addition at 5% has favoured for an increase in the retention of Cr(VI) (Kf =91.15L/kg). Cow manure promoted Cr(VI) reduction, possibly due to the presence of functional groups that are present along with dissolved organic carbon and also by increased microbial activity. It is concluded that the mitigation of Cr toxicity is brought about by the addition of amendments which manipulate the properties of soil to increase retention of Cr(III) and Cr(VI).]]> Thu 21 Oct 2021 12:51:17 AEDT ]]> Arsenic-Imposed Effects on Schwertmannite and Jarosite Formation in Acid Mine Drainage and Coupled Impacts on Arsenic Mobility https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42912 -1 and ∼33,000 to ∼150 μg L-1, respectively. This trend was interrupted by a sharp rise in aqueous As(III) and Fe(II) caused by reductive dissolution of As-bearing Fe(III) phases in a sediment retention pond. Attenuation of Fe and As mobility occurred via formation of As(V)-rich schwertmannite, As(V)-rich jarosite, and amorphous ferric arsenate (AFA), resulting in solid-phase As concentrations spanning ∼13 to ∼208 g kg-1. Schwertmannite and jarosite retained As(V) predominantly by structural incorporation involving AsO4-for-SO4 substitution at up to ∼40 and ∼22 mol %, respectively. Arsenic strongly influenced Fe(III) mineral formation, with high As(V) concentrations causing formation of AFA over schwertmannite. Arsenic also strongly influenced Fe(III) mineral evolution over time. In particular, increasing levels of As(V) incorporation within schwertmannite were shown, for the first time, to enhance the transformation of schwertmannite to jarosite. This significant discovery necessitates a re-evaluation of the prevailing paradigm that As(V) retards schwertmannite transformation.]]> Thu 02 Nov 2023 14:53:12 AEDT ]]> Tooeleite Transformation and Coupled As(III) Mobilization Are Induced by Fe(II) under Anoxic, Circumneutral Conditions https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51866 Thu 02 Nov 2023 14:47:06 AEDT ]]> Are root elongation assays suitable for establishing metallic anion ecotoxicity thresholds? https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43512 Thu 02 Nov 2023 14:46:48 AEDT ]]> Waste to watt: anaerobic digestion of wastewater irrigated biomass for energy and fertiliser production https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47848 Thu 02 Feb 2023 16:32:49 AEDT ]]> Pyrogenic carbon in Australian soils https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31024 Sat 24 Mar 2018 07:34:51 AEDT ]]> Sorption kinetics of zinc and nickel on modified chitosan https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29543 Sat 24 Mar 2018 07:33:09 AEDT ]]> Pore-water carbonate and phosphate as predictors of arsenate toxicity in soil https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29932 Cucumis sativa L) using 10 contrasting soils. Arsenate phytotoxicity was shown to be related to soluble carbonate and phosphate. The data indicated that dissolved phosphate and carbonate had an antagonistic impact on arsenate toxicity to cucumber. To predict arsenate phytotoxicity in soils with a diverse range of soil solution properties, both carbonate and phosphate were required. The relationship between arsenic and pore-water toxicity parameters was established initially using multiple regression. In addition, based on the relationship with carbonate and phosphate we successively applied a terrestrial biotic ligand-like model (BLM) including carbonate and phosphate. Estimated effective concentrations from the BLM-like parametrization were strongly correlated to measured arsenate values in pore-water (R2 = 0.76, P < 0.001). The data indicates that an ion interaction model similar to the BLM for arsenate is possible, potentially improving current risk assessments at arsenic and co-contaminated soils.]]> Sat 24 Mar 2018 07:30:55 AEDT ]]> Differential effect of biochar upon reduction-induced mobility and bioavailability of arsenate and chromate https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24099 Sat 24 Mar 2018 07:11:45 AEDT ]]> Arsenic geochemistry and mineralogy as a function of particle-size in naturally arsenic-enriched soils https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47285 Mon 30 Oct 2023 17:10:01 AEDT ]]> Rhizoremediation as a green technology for the remediation of petroleum hydrocarbon-contaminated soils https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38496 Mon 11 Oct 2021 15:51:00 AEDT ]]> Oxidative transformation of iron monosulfides and pyrite in estuarine sediments: implications for trace metals mobilisation https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33161 Fri 07 Sep 2018 16:40:17 AEST ]]> Geochemical fractionation and mineralogy of metal(loid)s in abandoned mine soils: insights into arsenic behaviour and implications to remediation https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39995 Fri 01 Jul 2022 13:49:31 AEST ]]>