https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47530 Wed 19 Apr 2023 08:49:34 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29473 Thu 21 Oct 2021 12:52:02 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32950 −1; 45% reduction) in Soil 2 (pH 5.5). The modified biochars enhanced Cr(VI) reduction by 55% (SM-BC-M) compared to manure (29%, SM) and manure-derived biochars (40% reduction, SM-BC). Among the modified biochars, SM-BC-M showed a higher Cr(VI) reduction rate (55%) than PM-BC-M (48%) in Soil 2. Various oxygen-containing surface functional groups such as phenolic, carboxyl, carbonyl, etc. on biochar surface might act as a proton donor for Cr(VI) reduction and subsequent Cr(III) adsorption. This study underpins the immense potential of modified biochar in remediation of Cr(VI) contaminated soils.]]> Thu 16 Aug 2018 13:28:48 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19579 Sat 24 Mar 2018 07:58:19 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18567 Sat 24 Mar 2018 07:50:09 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:5173 Sat 24 Mar 2018 07:47:42 AEDT ]]> https://ogma.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://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36467 Mon 11 Mar 2024 17:44:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35946 Fri 17 Jan 2020 16:29:09 AEDT ]]>