https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55000 Wed 27 Mar 2024 16:39:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26052 Pennisetum purpureum, Medicago sativa, Sinapis alba and Helianthus annuus) were grown separately on three different soils (CI, CNI and CTRL) in plastic pots. Two types of water (tap water and wastewater) and two loadings were applied throughout the planting period based on the field capacity (FC 100 and 150%). The overall dry matter yield was compared between the soils and treatments. Under wastewater irrigation, among the four species grown in the CI soil, P. purpureum (171 g) and H. annuus (151 g) showed high biomass yields, followed by S. alba (115 g) and M. sativa (31 g). The plants grown under tap water showed about 70% lower yields compared to the abattoir wastewater irrigation (AWW). Similar trends in the biomass yields were observed for CNI and CTRL soils under the two water treatments, with the biomass yields in the following order CI > CNI > CTRL soils. The results confirm the beneficial effects of AWW at the greenhouse level. However, a proper cropping pattern and wastewater irrigation management plan is essential to utilise the nutrients available in the wastewater-irrigated land treatment sites. The increase in fertility is evident from the effects of wastewater on biomass growth and also the abundance of nutrients accumulated in plants. A mass balance calculation on the applied, residual and the plant-accumulated nutrients over a few cropping periods will help us in understanding the nutrient cycling processes involved in the abattoir-irrigated land treatment sites, which will serve as an effective tool for the environmental management.]]> Wed 11 Apr 2018 12:50:36 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43940 Wed 05 Oct 2022 12:51:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35113 Tue 20 Feb 2024 11:41:20 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39492 Ipomoea aquatica) has potential to improve the quality of POME. This present study investigated the phytoremediation efficiency of POME, which contains high amount of chemical oxygen demand (COD), nitrate, phosphate using water spinach for up to 15 days and described its impact on the growth performance. Experimental design of this study consisted of five treatments with three replications namely: control: 0% POME (0 L POME + 10 L tap water), Treatment A: 25% POME (2.5 L POME + 7.5 L tap water), Treatment B: 50% POME (5 L POME+ 5 L tap water), Treatment C: 75% POME (7.5 L POME + 2.5 L tap water), and Treatment D: 100% POME (10 L POME). The results indicated that water spinach was able to reduce COD, nitrate, phosphate and color as 86.3%, 21.5%, 90.9 % and 95.3%, respectively. Water spinach had no influence on the growth performance even up to 75% of POME containing media. Furthermore, results showed that high concentrations of POME damage root structures, and ultimately impact the growth performance of water spinach. In conclusion, phytoremediation using water spinach can be a potential remediation method to improve the quality of COD, phosphate and nitrate.]]> Tue 09 Aug 2022 14:33:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37713 Thu 14 Mar 2024 12:28:50 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30372 Thu 03 Feb 2022 12:19:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:1961 Sat 24 Mar 2018 08:33:13 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:5053 Sat 24 Mar 2018 07:48:42 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29699 −1. The pH and EC varied widely in the 3.9–8.4 and 152–7311 µS ranges, respectively. Nine plant species growing over the copper mine site were selected to screen for metal uptake to determine their suitability for phytoremediation. The Australian native tree species Eucalyptus camaldulensis indicated enrichment factor (EF) of 2.17, 1.89, and 1.30 for Cu, Zn, and Pb, respectively, suggesting that this species of tree can accumulate these metals to some degree. The stress-resistant exotic olive, Olea europaea exhibited EF of ≤ 0.01 for Cu, Cd, and Pb, and 0.29 for Zn, which is characteristic of an excluder plant. Acacia pycnantha, the Australian pioneer legume species with EF 0.03, 0.80, 0.32, and 0.01 for Cu, Zn, Cd, and Pb, respectively, emerged as another strong metal excluder and consequently as an ideal metal stabilizer.]]> Sat 24 Mar 2018 07:38:48 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29304 Sat 24 Mar 2018 07:34:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26444 Carpobrotus rossii grown in the contaminated sediment amended with six organic amendments. Results: The adsorption capacity as measured by Langmuir adsorption maximum followed the order of Cr > Zn > Cu > Cd, and the effect of organic amendments followed the order of chicken manure > cow manure > brown coal > golden wattle biochar > blue gum biochar > radiata pine biochar. The addition of amendments increased the adsorption of heavy metals, with brown coal resulting in the lowest concentrations of water-extractable Cd, Cu and Zn. Two manures resulted in the highest concentrations of these water-extractable heavy metals in the rhizosphere soil of C. rossii. Furthermore, brown coal resulted in higher shoot accumulation of these heavy metals than three wood-derived biochars, whilst the manures generally had the lowest accumulation of Cd and Cu although they increased shoot biomass. Conclusions: The addition of brown coal decreased whereas manure addition increased the mobility (water-extractable fraction) of heavy metals in rhizosphere soil. Phytoextraction of Cd and Cu was greater with brown coal than with biochars or manures. Brown coal is suitable for enhancing phytoextraction of these heavy metals because it could increase their accumulation in shoots of C. rossii and decrease the risk of leaching of these heavy metals into groundwater.]]> Sat 24 Mar 2018 07:27:18 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49238 Mon 08 May 2023 10:07:04 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53003 Mon 06 Nov 2023 08:45:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41295 Mon 01 Aug 2022 12:09:39 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49677 Fri 26 May 2023 16:45:41 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33954 Fri 25 Jan 2019 11:55:06 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24877 Fri 22 Apr 2022 10:25:28 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44714 a]pyrene (B[a]P) and pyrene (PYR) was investigated. A glasshouse experiment was conducted to measure the changes in morphological, physiological, biochemical parameters and the bioaccumulation and biodegradation ability of the plants in soils spiked with 48 and 194 mg kg⁻¹ of B[a]P and PYR, respectively. The per cent removal efficacy of B[a]P and PYR by the tested plant species over a period of 50 days was from 6 to 26% and 14 to 40% respectively. The maximum removal of both B[a]P and PYR was observed in Sudan grass (C4), vetiver (C4), maize (C4), and sunflower (C3). In terms of accumulation in root and shoot, the concentration of PYR was higher in both C3 and C4 plant species when compared to B[a]P. Overall the results indicated that C4 plants were more efficient than their C3 counterparts in terms of morphological, physiological, biochemical and degradation ability of PAHs.]]> Fri 21 Oct 2022 08:51:37 AEDT ]]>