https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44347 Tue 11 Oct 2022 19:35:29 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34546 Tue 09 Mar 2021 12:01:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36046 Thu 30 Jan 2020 14:07:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:503 Thu 25 Jul 2013 09:10:34 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31377 14C labelled malic acid confirmed the trend of the bulk respiration results. The allophanic soil showed the lowest amount of carbon mineralisation under all experimental conditions. A strong inverse correlation (R² = 0.90 at p < 0.05) was observed between CO₂ emission rate and total sesquioxides (Fe and Al oxides) content. As evidenced by the pore size distribution, micromorphologies and thermogravimetric analyses, the microporous structure and microaggregate formation in the allophanic soil enhanced carbon sequestration. This study indicated that soil carbon stabilisation was related more to the sesquioxides content than to the clay types or their relative specific surface areas]]> Sat 24 Mar 2018 08:44:09 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17748 2 was performed using two techniques, namely, the induction period and iso-conversional methods. The modelling and analysis arising from thermogravimetric studies of the material gave rise to the pre-exponential factor and, most importantly, the activation energy for the transition. Analysis using the induction period showed the activation energy to increase linearly with extent of conversion, ranging from 109–250 kJ mol⁻¹, while the iso-conversional method gave values in the range 66–76 kJ mol⁻¹, with higher values for both lower and higher extents of conversion. Comparison of these methods indicates that the iso-conversional method is the preferred technique for determining the kinetic parameters for this process. Overall, this allows for the determination of the optimum heat treatment temperature and time for the γ-MnO₂.]]> Sat 24 Mar 2018 07:57:20 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20287 Sat 24 Mar 2018 07:55:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28825 Sat 24 Mar 2018 07:38:27 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28829 Sat 24 Mar 2018 07:38:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30759 Sat 24 Mar 2018 07:24:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24466 -1 for the CO₂ gasification of Morwell coal char. With 2 % Ca loading, the activation energy increased to 204.53 kJ mol^-1 due to lowering of the surface area. However, an order of magnitude increase in the pre-exponential factor indicated an increase in active reaction sites for the 2 % Ca-loaded sample, resulting in a net increase in gasification rate. 5 % Ca loading and 2 % Fe loading proved to be less effective in increasing the gasification rate. Analysis of the TG outlet gas also proved the effectiveness of 2 % Ca loading as a gasification catalyst.]]> Sat 24 Mar 2018 07:17:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47525 Mon 23 Jan 2023 12:15:50 AEDT ]]>