https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 The social cost of carbon dioxide: policy and methods for pricing greenhouse gas emissions https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33719 Wed 12 Dec 2018 15:55:03 AEDT ]]> Catalysis of CO2 absorption in aqueous solution by inorganic oxoanions and their application to post combustion capture https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:15552 Wed 11 Apr 2018 18:06:03 AEST ]]> Georemediation of a spent potliner leachate contaminated aquifer using calcite and carbon dioxide https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22047 Wed 11 Apr 2018 15:53:58 AEST ]]> Synthesis of functionalized nanoporous biocarbons with high surface area for CO<inf>2</inf>capture and supercapacitor applications https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39758 Tue 21 Jun 2022 09:29:05 AEST ]]> Contribution of pyrolytic gas medium to the fabrication of co-impregnated biochar https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43113 Tue 13 Sep 2022 13:50:24 AEST ]]> A mechanistic study into the reaction between carbon dioxide and amines https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12580 Thu 29 Nov 2018 08:39:56 AEDT ]]> Designing advanced biochar products for maximizing greenhouse gas mitigation potential https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29473 Thu 21 Oct 2021 12:52:02 AEDT ]]> Modeling of Cryogenic Liquefied Natural Gas Ambient Air Vaporizers https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43284 Thu 15 Sep 2022 12:30:31 AEST ]]> Feasibility of 2 °C as a post-2020 warming threshold via input-constrained optimal control https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26379 Thu 12 Apr 2018 13:50:58 AEST ]]> Kinetics and mechanism of carbamate formation from CO₂(aq), carbonate species, and monoethanolamine in aqueous solution https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:8321 Sat 24 Mar 2018 08:36:59 AEDT ]]> Lowering atmospheric carbon dioxide from power generation by forming usable carbonates: mineral carbonation as a CO₂ sequestration option in NSW, Australia https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:9490 Sat 24 Mar 2018 08:35:36 AEDT ]]> An FTIR spectroscopic study on the effect of molecular structural variations on the CO2 absorption characteristics of heterocyclic amines https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12609 2 and piperidine, as well as commercially available functionalised piperidine derivatives, for example, those with methyl-, hydroxyl- and hydroxyalkyl substituents, has been investigated. The chemical reactions between CO₂ and the functionalised piperidines were followed in situ by using attenuated total reflectance (ATR) FTIR spectroscopy. The effect of structural variations on CO₂ absorption was assessed in relation to the ionic reaction products identifiable by IR spectroscopy, that is, carbamate versus bicarbonate absorbance, CO₂ absorption capacity and the mass-transfer coefficient at zero loading. On absorption of CO₂, the formation of the carbamate derivatives of the 3- and 4-hydroxyl-, 3- and 4-hydroxymethyl-, and 4-hydroxyethyl-substituted piperidines were found to be kinetically less favourable than the carbamate derivatives of piperidine and the 3- and 4-methyl-substituted piperidines. As the CO₂ loading of piperidine and the 3- and 4-methyl- and hydroxyalkyl-substituted piperidines exceeded 0.5 moles of CO₂ per mole of amine, the hydrolysis of the carbamate derivative of these amines was observed in the IR spectra collected. From the subset of amines analysed, the 2-alkyl- and 2-hydroxyalkyl-substituted piperidines were found to favour bicarbonate formation in the reaction with CO₂. Based on IR spectral data, the ability of these amines to form the carbamate derivatives was also established. Computational calculations at the B3LYP/6-31+G** and MP2/6-31+G** levels of theory were also performed to investigate the electronic/steric effects of the substituents on the reactivity (CO₂ capture performance) of different amines, as well as their carbamate structures. The theoretical results obtained for the 2-alkyl- and 2-hydroxyalkyl-substituted piperidines suggest that a combination of both the electronic effect exerted by the substituent and a reduction in the exposed area of the nitrogen atom play a role in destabilising the carbamate derivative and increasing its susceptibility to hydrolysis. A theoretical investigation into the structure of the carbamate derivatives of these amines revealed shorter N-C bond lengths and a less-delocalised electron distribution in the carboxylate moiety.]]> Sat 24 Mar 2018 08:17:28 AEDT ]]> The effect of molecular structural variations on the CO2 absorption characteristics of heterocyclic diamines for amine-based post combustion CO2 capture https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13341 Sat 24 Mar 2018 08:17:00 AEDT ]]> Comprehensive study of the hydration and dehydration reactions of carbon dioxide in aqueous solution https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:10423 Sat 24 Mar 2018 08:12:37 AEDT ]]> Comprehensive kinetic and thermodynamic study of the reactions of CO2(aq) and HCO3− with monoethanolamine (MEA) in aqueous solution https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17531 2(aq) and monoethanolamine (MEA) has been investigated using stopped-flow spectrophotometry by following the pH changes during the reactions with colored acid–base indicators. Multivariate global analysis of both the forward and backward kinetic measurements for the reaction of CO₂(aq) with MEA yielded the rate and equilibrium constants, including the protonation constant of MEA carbamate, for the temperature range of 15–45 °C. Analysis of the rate and equilibrium constants in terms of the Arrhenius, Eyring, and van’t Hoff relationships gave the relevant thermodynamic parameters. In addition, the rate and equilibrium constants for the slow, reversible reaction of bicarbonate with MEA are reported at 25.0 °C. At high pH, reactions of the amine with CO₂ and with bicarbonate are significant.]]> Sat 24 Mar 2018 08:03:56 AEDT ]]> Carbon dioxide mitigation strategies for the Singapore power generation sector https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17841 2) emissions from the power generation sector to achieve 2020 emission reduction targets. Our study reveals that there are still important gaps, especially if the aim is to achieve energy security in a future-oriented way and generating sustainable, reliable and competitively-priced electricity. The paper outlines options by which Singapore can employ energy sources to reduce CO₂ emissions from the power generation sector beyond 2020.]]> Sat 24 Mar 2018 08:03:28 AEDT ]]> A melamine-modified ß-zeolite with enhanced CO₂capture properties https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17212 Sat 24 Mar 2018 07:59:17 AEDT ]]> Toward the understanding of chemical absorption processes for post-combustion capture of carbon dioxide: electronic and steric considerations from the kinetics of reactions of CO₂(aq) with sterically hindered amines https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19716 Sat 24 Mar 2018 07:53:45 AEDT ]]> Effects of pCO₂ on the removal of fluoride from wastewater by calcite https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:16839 (g) to CO₂_(aq) could not keep up with the consumption of CO₂_(aq), resulting in an initial disequilibrium with experimental pH reaching equilibrium quickly, while fluoride removal lagged. Increasing stirring rate significantly decreased the extent of disequilibrium and the time at which the CaCO₃ -fluoride-CO₂ system attained equilibrium due to the increased rate of transport of dissolved CO₂ to the CaCO₃ surface, and simultaneously the rate of transport of the dissolved CaCO₃ to the bulk solution. Optimal fluoride removal occurs at pCO₂ ~10-0.52 [30% (mol% CO₂)] with 96% of the initial 2,000 mg/L fluoride load removed in less than 80 min with a stirring rate of 300 revolutions per minute. Increasing pCO₂ to ~100 (100% CO₂) resulted in very little gain, less than 2%, in fluoride removal, or in the time required to reach equilibrium and therefore significant remediation cost savings can be obtained by using pCO₂ 30% when compared to 100%.]]> Sat 24 Mar 2018 07:53:28 AEDT ]]> A simple chemical model to represent CO₂-amine-H₂O vapour-liquid-equilibria https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19156 Sat 24 Mar 2018 07:52:20 AEDT ]]> Functional relationships of soil acidification, liming, and greenhouse gas flux https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29557 Sat 24 Mar 2018 07:33:11 AEDT ]]> The fundamentals of post-combustion capture https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27741 Sat 24 Mar 2018 07:27:46 AEDT ]]> Carbon dioxide concentration in temperate climate caves and parent soils over an altitudinal gradient and its influence on speleothem growth and fabrics https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26553 Sat 24 Mar 2018 07:26:08 AEDT ]]> CO₂ absorption into aqueous amine blended solutions containing monoethanolamine (MEA), N,N-dimethylethanolamine (DMEA), N,N-diethylethanolamine (DEEA) and 2-amino-2-methyl-1-propanol (AMP) for post-combustion capture processes https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27484 Sat 24 Mar 2018 07:25:38 AEDT ]]> Simulation of enthalpy and capacity of CO₂ absorption by aqueous amine systems https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:4444 Sat 24 Mar 2018 07:18:05 AEDT ]]> Determinants of the intention to use a natural gas vehicle (NGV) as an alternative to a petrol car: the case of Malaysia https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22548 Sat 24 Mar 2018 07:14:45 AEDT ]]> Activation Volumes for the Hydration Reactions of Carbon Dioxide https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23052 Sat 24 Mar 2018 07:13:50 AEDT ]]> Equilibria and kinetics of the interactions of CO₂ with aqueous ammonia and other amine solutions https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32142 Mon 23 Sep 2019 13:20:55 AEST ]]> When Carbon Meets CO2: Functional Carbon Nanostructures for CO2 Utilization https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43803 Fri 30 Sep 2022 15:39:37 AEST ]]> Development and Evaluation of a Novel Method for Determining Absorbent Composition in Aqueous Ammonia-Based CO2 and SO32- and SO42- Loaded Capture Process Solutions via FT-IR Spectroscopy https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42598 Fri 26 Aug 2022 12:17:41 AEST ]]>