https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52603 Wed 18 Oct 2023 13:37:49 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50102  1); however, fruits and pulses do not pose any non-cancer health risks to Bangladeshi residents. Most of the cereals and vegetables showed a higher value than 10−6, indicating a potential cancer risk; however, fruits and pulses showed lower risk only marginally exceeding the lower allowable limit (i.e., 10−6).]]> Wed 12 Jul 2023 14:04:45 AEST ]]> https://nova.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://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55017 Wed 03 Apr 2024 13:28:34 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52545 Tue 17 Oct 2023 14:51:51 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36302 Thu 28 Oct 2021 12:35:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38384 Thu 02 Sep 2021 16:12:32 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1767 Sat 24 Mar 2018 08:27:37 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:355 Sat 24 Mar 2018 07:42:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26318 V than As^III to L. disperma but was highly effective in reducing both the As^III and As^V toxicity to C. cf. dubia. The growth of Chlorella sp. was significantly higher (p<0.05) in remediated and pre-remediated water than in controls (non-As-contaminated filtered Colo River water) for As^III, while the opposite was observed for As^V, indicating that As^V is more toxic than As^III to this microalga. Although the IOCS can efficiently remove As from contaminated water, residual As and other constituents (e.g. Fe, nitrate) in the remediated water had a significant effect on freshwater organisms.]]> Sat 24 Mar 2018 07:24:13 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24516 Quercus robur) acorn peel (OP), to remove toxic Cr(VI) from aqueous solutions was studied in a batch system as a function of contact time, adsorbate concentration, adsorbent dosage, and pH. In an equilibrium time of 420 min, the maximum Cr removal by OP at pH 2 and 10 was 100 and 97 %, respectively. The sorption data fitted well with Langmuir adsorption model. Evaluation using Langmuir expression presented a monolayer sorption capacity of 47.39 mg g^-1 with an equilibrium sorbent dose of 5 g L^-1 and pH 7. Uptake of Cr by OP was described by pseudo-second-order chemisorption model. ICP-OES, LC-ICPMS analysis of the aqueous and solid phases revealed that the mechanism of Cr(VI) removal is by 'integrated adsorption and reduction' mechanism. ESEM-EDX and XRD analysis of OP before and after adsorption also confirmed that both adsorption and reduction of Cr(VI) to less toxic Cr³⁺ forms followed by complexation onto the adsorbent surface contributed to the removal of Cr(VI). Consistent with batch studies, OP effectively removed (>95 %) Cr from the real water samples collected from lake and sea. The results of this study illustrate that OP could be an economical, green, and effective biomaterial for Cr(VI) removal from natural aquatic ecosystems and industrial effluents.]]> Sat 24 Mar 2018 07:13:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24350 -1 of total PAHs using novel acid-, metal-tolerant, N-fixing, P-solubilizing, and biosurfactant-producing LMW and HMW PAH-degrading bacterial combinations as inoculums was compared in slurry- and solid-phase microcosms over natural attenuation. Bioaugmentation of 5 % of bacterial consortia A and N in slurry- and solid-phase systems enhanced 4.6-5.7 and 9.3-10.7 % of total PAH degradation, respectively, over natural attenuation. Occurrence of 62.7-88 % of PAH biodegradation during natural attenuation in soil and slurry illustrated the accelerated rate of intrinsic metabolic activity of the autochthonous microbial community in the selected MGP soil. Monitoring of the total microbial activity and population of PAH degraders revealed that the observed biodegradation trend in MGP soil resulted from microbial mineralization. In the slurry, higher biodegradation rate constant (k) and lower half-life values (t_1/2) was observed during bioaugmentation with consortium N, highlighting the use of bioaugmentation in bioslurries/bioreactor to achieve rapid and efficient bioremediation compared to that of a static solid system. In general, natural attenuation was on par with bioaugmentation. Hence, depending on the type of soil, natural attenuation might outweigh bioaugmentation and a careful investigation using laboratory treatability studies are highly recommended before the upscale of a developed bioremediation strategy to field level.]]> Sat 24 Mar 2018 07:10:17 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39730 Mon 13 May 2024 13:29:27 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38470 Mon 09 May 2022 16:19:51 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33954 Fri 25 Jan 2019 11:55:06 AEDT ]]>