https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44657 Wed 19 Oct 2022 10:04:02 AEDT ]]> 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:37828 Wed 12 May 2021 10:00:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45846 Wed 11 Jan 2023 10:20:44 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49296 Wed 10 May 2023 14:02:14 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53716 Wed 10 Jan 2024 11:17:44 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39503 −1) and lead (Pb = 736.2 mg kg⁻¹). Soil properties, microbial activities, and the geochemical fractions and potential availabilities of As and Pb were determined in the non-treated (control) and biochar-treated soil. Modification of PB (pH = 10.6) and GWB (pH = 9.3) with Fe caused a decrease in their pH to 4.4 and 3.4, respectively. The application of PB and GWB significantly increased soil pH, while Fe-PB and Fe-GWB decreased soil pH, as compared to the control. Application of Fe-GWB and Fe-PB decreased the NH₄H₂PO₄-extractable As by 32.8 and 35.9%, which was more effective than addition of GWB and PB. However, PB and GWB were more effective than Fe-PB and Fe-GWB in Pb immobilization. Compared to the control, the DTPA-extractable Pb decreased by 20.6 and 21.7%, respectively, following PB and GWB application. Both biochars, particularly PB significantly increased the 16S rRNA bacterial gene copy numbers, indicating that biochar amendments enhanced the bacterial abundance, implying an alleviation of As and Pb bio-toxicity to soil bacteria. The results demonstrated that pristine pig carcass and green waste biochars were more effective in immobilizing Pb, while their Fe-engineered biochars were more effective in As immobilization in co-contaminated soils.]]> Wed 07 Feb 2024 16:39:44 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45684 Wed 07 Feb 2024 16:37:32 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38910 Wed 07 Feb 2024 16:34:13 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46636 4PO₄⋅6H₂O crystals and Poly-P as the IP species, and Mono-P as the OP species in compost generated from the dissolution or inter-transformation among P pools. These nutrient flows are attributed to changes in the structure of microbial communities as a consequence of introducing MMIs. Diverse microbial compositions were identified in different composting phases, although Bacillus appeared in each phase. This work provides support for the aerobic composting of hazardous biowaste as well as an improved understanding of nutrient flows, as a means of producing higher quality compost.]]> Wed 07 Feb 2024 15:28:20 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47133 Wed 07 Feb 2024 15:26:55 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:37264 Tue 15 Sep 2020 12:51:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37263 Tue 15 Sep 2020 12:37:20 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35490 i, accounting for human intake over the maximum allowable oral reference dose for that same TE), indicating that its risk tends to be underestimated. Other TE limits, such as those of Cd, Cu, Ni, Pb, and Zn typically result in low HQ_i, meaning that limits in their cases are rather overprotective. Our approach reveals the need of reducing diversity in regulation limits by drafting soil legislations of worldwide validity, since risks are common across countries. We suggest that new directions should strategically tend to (a) reduce limits of TEs with underestimated contribution to health risk (such as As), (b) cautiously increase limits of TEs that currently cause minor health risks, (c) quantify TE risks associated with uptake to edible plants and potable water, and (d) consider multi-element contamination cases, where risks are cumulatively enhanced due to TE synergism.]]> Thu 14 Apr 2022 10:57:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34743 2H₃O₂)₂), Pb₃(PO₄)₂, PbSiO₃, and PbCO₃. On phytoliths in CFB500, Pb²⁺ ions were mainly sorbed on the sites of silicate with a structure similar to PbSiO₃. The contribution of binding sites for Pb²⁺ sorption was ascribed to the outer-wall of carbon skeleton of CFB500, which was stronger than that provided by the mineral oxide aggregate and phytoliths on CFB500. Organic carbon functional groups, inorganic carbonates, silicates and phosphates on CFB500 mostly dominated the sorption sites for Pb²⁺. Our results suggest that CFB500 was a promising material for the remediation of Pb-contaminated aqueous environments (e.g., wastewater).]]> Mon 29 Jan 2024 17:59:04 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44784 Mon 24 Oct 2022 09:17:48 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46969 Mon 12 Dec 2022 16:12:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36467 Mon 11 Mar 2024 17:44:29 AEDT ]]>