https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43935 Wed 28 Feb 2024 14:55:05 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37263 Tue 15 Sep 2020 12:37:20 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37963 -1) of the BC (4%, w/w) and FA-BC (4%, w/w) treated soils demonstrated a more efficient P adsorption capacity of the FA-BC. Application of the 2% (w/w) FA-BC also significantly reduced the leaching of total P (81.3%) from the soil column, while maintained an appropriate level of bioavailable P in the soil for sustaining plant growth. The chemical sequestration test and in-situ P k-edge XANES analyses of the FA-BC incubated soils revealed that the labile Ca-P fractions were transformed into stabilized Fe/Al-P complexes. The increased soil pH, a higher degree of soil P saturation, and intensive interaction between P and Fe/Al (hydr)oxides also contributed to the superior ability of the FA-BC amended soils towards P retention. This study provided field-relevant implications for the design and application of engineered biochar for green and sustainable improvement of agricultural soils.]]> Tue 13 Jul 2021 11:50:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32437 77%), and Cu-EDTA (36-76%) complexes on the FWC was found at apparent equilibrium. The adsorption capacity of Cu-EDDS (32-38%), Pb-EDTA (~20%), and Zn-EDTA (~0%) complexes was limited. However, the co-existence of FWC and EDDS increased the mobilization of Cu and Zn, while the co-existence of FWC and EDTA reduced the available amounts of Cu and Pb in solution. Metal speciation calculation showed that nearly all extracted Cu, Zn, and Pb were complexed with chelants in the solution, while notable amount of dissolved Fe (but not Al and Ca) was associated with dissolved organic matter. In this study, FWC can be useful for minimizing the unintended leaching of Cu- and Pb-EDTA complexes in EDTA-enhanced phytoremediation, yet it might be less suitable for the case of EDDS. A novel integration of recycled waste can enhance the effectiveness of sustainable remediation of contaminated soils.]]> Tue 05 Jun 2018 14:58:09 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24104 Thu 21 Oct 2021 12:52:12 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29117 Oenothera picensis in a Cu-contaminated soil. Materials and methods: A Cu-contaminated sandy soil (338 mg Cu kg^-1) was spiked and equilibrated with additional Cu (0, 100, and 500 mg Cu kg−¹). The spiked soil was then amended with CMB (0, 5, and 10 % w/w) and incubated for 2 weeks. The metallophyte was grown on these treatments under greenhouse conditions for 3 months. Pore water solutions were collected from the plant pots every 30 days. After the harvest, soil and pore water pH, soil Cu fractions, pore water Cu concentration, soil microbial activity, plant biomass weight, and Cu concentration in plant parts were determined. Results and discussion The CMB increased the pH of soils and soil pore water, and probably also soil major nutrients. It reduced the exchangeable fraction of Cu but increased its organic matter and residual fractions. At the same time, it decreased the Cu concentration in the soil pore water. The CMB increased basal respiration and dehydrogenase activity. The CMB application produced up to three and seven times more root and shoot biomass, respectively. In addition, shoots accumulated lesser Cu than control but roots did more. Plants survived in soil that was spiked with 500 mg Cu kg^-1, only when CMB dose was 10 %. Conclusions: The CMB affected the Cu uptake in plant by altering the mobility, bioavailability, and spatial distribution of Cu in soils. The increase in available nutrients and decrease in Cu toxicity facilitated plant growth. The increased microbial activity probably also promoted the plant growth and reduced the Cu bioavailability. Therefore, CMB can be used to remediate Cu-contaminated soils.]]> Sat 24 Mar 2018 07:36:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42817 Mon 05 Sep 2022 11:14:24 AEST ]]>