https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42625 Wed 31 Aug 2022 15:54:21 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33909 Wed 23 Jan 2019 10:40:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34231 C10 – C16, > C16 – C34, > C34 – C40. This clean-up step is important as this will affect subsequent sample preparation steps to separate TPH into its different fractions and individual components for assessing the level of contamination and the effectiveness of remediation for decision making based on risk assessment.]]> Wed 20 Feb 2019 15:55:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32177 -3 and 760 mV, respectively. However, the internal resistances of unmodified group and B-rGO group were larger at 375.21 Ω and 299.11 Ω. Besides, lower power density and output voltage were shown at 8.97 W·m ^-3 and 480 mV for control group and 13.16 W·m^-3 and 635 mV for B-rGO group. Above all, it demonstrates that G-rGO film anodes performed better and can be applied as anode materials in MFC to accelerate electricity generation.]]> Wed 09 May 2018 14:23:07 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42940 Wed 07 Sep 2022 15:23:30 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34954 Wed 04 Dec 2019 10:03:09 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32376 Tue 29 May 2018 11:49:00 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34312 Tue 26 Feb 2019 16:56:27 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34281 Tue 26 Feb 2019 12:16:19 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47634 2 = 0.98). Finally, the cycling experiments for MB adsorption by bagasse synthesized rGO confirmed that the as-prepared rGO was reusable. Taken together, all results in this work provided the new insights into the green reduction of GO by bagasse, and the formation of rGO/bagasse material presented a great potential in the disposal of dye waste water.]]> Tue 24 Jan 2023 14:24:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48527 Tue 21 Mar 2023 13:31:48 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26409 Tue 16 Oct 2018 12:10:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24636 80%). Acinetobacter venetianus immobilized on MBC demonstrated superior efficiency in degrading diesel oil (94%) compared to planktonic cells culture (82%) over a 3-day period. Moreover, the simultaneous adsorption and biodegradation of diesel oil using these immobilized cells fitted well to the pseudo second order (R² > 0.99). Scanning electron microscopy (SEM) revealed that through absorption, cells attached well to the cavum of MBC stalk cells. Fourier transform infrared analysis (FTIR) revealed that a large number of bands at 1300-1500 cm^-1 existed, demonstrating that the diesel oil was degraded and new bands were formed. Gas Chromatography Mass Spectrum (GC-MS) analysis indicated the immobilized cells could degrade diesel oil into esters and aldehydes. Results justified the applicability of MBC as the carrier matrix for immobilizing microorganisms in removing diesel oil compounds from industrial wastewater.]]> Tue 14 Nov 2023 13:37:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33171 –1, pH = 4 and 25°C with contact time of 120 min, nearly 20% and 80% higher than activated carbon and powder coke at their respective optimum conditions. This is attributed to the abundant oxygen-containing functional groups in its structure in spite of the apparently lower surface area than activated carbon. The lowest adsorption demonstrated by powder coke is correlated to the smallest surface area (0.81 m²·g^–1). In addition, the adsorption behavior over time was followed the pseudo-second-order kinetic model very well. The time to reach equilibrium is short for activated carbon and intraparticle diffusion seems to be the rate controlling step. However, the adsorption on activated coke and powder coke is slower than activated carbon and the surface diffusion is more important in these processes. It is expected the study will provide a technical insight into the above said carbonaceous adsorbent and also identifying the lowcost adsorbent for bio-treated coking waste water treatment.]]> Tue 11 Sep 2018 12:14:54 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44299 40% ethanol in solution, leading to the formation of more stable, flower-like crystals of 4MgCO3·Mg(OH)2·4H2O. The results of this study could contribute to the development of methods for controllable crystallization of MgCO3·3H2O.]]> Tue 11 Oct 2022 15:59:28 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32679 Tue 10 Jul 2018 15:38:12 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42866 Tue 06 Sep 2022 09:17:31 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37282 cat⁻¹ h⁻¹ and a Faradaic efficiency as high as 8.3% at a low overpotential (0.05 V vs the reversible hydrogen electrode), which is far better than that of the bulk Ru counterpart. Moreover, the Ru SAs/g-C₃N₄ displays a high stability during five recycling tests and a 12 h potentiostatic test. Density functional theory calculations reveal that compared to bulk Ru surfaces, Ru SAs/g-C₃N₄ has more facile reaction thermodynamics, and the enhanced NRR performance of Ru SAs/g-C₃N₄ originates from a tuning of the d-electron energies from that of the bulk to a single-atom, causing an up-shift of the d-band center toward the Fermi level.]]> Tue 05 Sep 2023 11:57:42 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29407 2+ and Pd²⁺, had no obvious effect on removing Orange II since less than 2.0% was removed. Kinetics study revealed that the removal rate fitted well to the pseudo-first-order reduction and pseudo-second-order adsorption model, meaning that removing Orange II via Fe/Pd NPs involved both adsorption and catalytic reduction. The remarkable stability of Fe/Pd NPs showed the potential application for removing azo dyes. Furthermore, Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) confirmed the changes in Fe/Pd NPs before and after reaction with Orange II. High Performance Liquid Chromatography-Mass Spectrum (HPLC-MS) identified the degraded products in the removal of Orange II, and finally a removal mechanism was proposed. This one-step strategy using grape leaf aqueous extract to synthesize Fe/Pd NPs is simple, cost-effective and environmentally benign, making possible the large-scale production of Fe/Pd NPs for field remediation.]]> Thu 27 Jan 2022 15:59:16 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42626 2 sequestration with large capacities, fast kinetics and low energy requirements is still of great importance. Here, we developed a new CO₂ sequestration process that integrates a sterically hindered amine based CO₂ absorption and coal fly ash based amine regeneration. The present study investigated the technical feasibility of the new process and gained a detailed insight into the reaction mechanisms involved. We found that the CO₂ rich 2-amino-2-methyl-1-propanol (AMP)solution can be chemically regenerated by CaO. The species analysis by FT-IR and ¹³C-NMR revealed that CaO was effective to regenerate AMP and combine with CO₂ in the AMP solution to produce carbonate precipitates. The evaluation of the AMP regeneration using a CaO containing fly ash indicated that fly ash was also effective for AMP regeneration and CO₂ mineralisation. The characterizations of the fly ash before and after mineralisation via SEM equipped with EDX and XRD confirmed that the CaO in fly ash played a decisive role in the process. The new approach developed in this work presents an alternative to the traditional thermal CO₂ desorption process, which can save energy for amine regeneration significantly and has added benefit of direct CO₂ mineralization.]]> Thu 20 Oct 2022 11:49:05 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36165 −1) and pore volume (0.21 cm³ g⁻¹). FTIR and XPS characterization indicated that AC2 possessed a distinctive configuration of functional groups, of which the basic oxygenic groups (60%) provided more hydrophobic adsorption sites for ROC. 3D‐EEM spectra suggested more aromatics and fluorescent materials were removed by AC2 compared with AC1. GC‐MS further confirmed that AC2 had stronger affinity with the ROC in BTCW, especially for PAHs and heterocyclic compounds. Conclusion: Surface chemistry is vital to the adsorption of ROC from coking wastewater, of which basic oxygenic functional groups have specific interactions with PAHs and heterocyclic compounds. The mechanism that best explains ROC adsorption is π–π dispersion between carbon materials and the pollutants, as well as the hydrogen‐bonding interactions. This study provides an encouraging and practical guide to ROC adsorption from BTCW in future operations.]]> Thu 20 Feb 2020 14:45:17 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49925 9.0 (k7 = 6.99 × 103 M–1·s–1). Below this pH, the formation of protonated monocarbamic acid (DMEDACOOH2) via the pathway involving DMEDAH+ and CO2(aq) becomes active and contributes to the kinetics despite the 107-fold decrease in the rate constant between the two pathways. 1H and 13C NMR spectra as a function of decreasing pH (increasing HCl concentration) at 25.0 °C have been evaluated here to confirm the protonation events in DMEDA. Calculations of the respective DMEDA nitrogen partial charges have also been undertaken to support the NMR protonation study. A comparison of the DMEDA kinetic constants with the corresponding data for piperazine (PZ) reveals that despite the larger basicity of DMEDA, the enhanced and superior kinetic performance of PZ with CO2(aq) above its predicted Bronsted reactivity is not observed in DMEDA.]]> Thu 15 Jun 2023 11:34:48 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34100 0.999 with enhanced limits of detection and limits of quantification values. The method was applied to real samples for routine environmental monitoring of TPHs in an Australian contaminated site characterized by refueling station. Analysis of groundwater samples in the area showed a wide range of TPH concentrations as follows: 66–1,546,000 (C₁₀–C₁₄), 216–22,762 (C₁₅–C₂₈) and 105–2,103 (C₂₉–C₃₆) μg/L. This method has detected trace levels, thereby measuring a wider concentration range of TPHs. These more accurate measurements can lead to the appropriate application of risk assessments and remediation techniques.]]> Thu 07 Feb 2019 14:26:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31300 Sat 24 Mar 2018 08:44:12 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30237 Sat 24 Mar 2018 07:41:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27865 Sat 24 Mar 2018 07:41:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29908 Sat 24 Mar 2018 07:40:54 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30099 2, O₂ and air) was employed. Results indicated 100% of phenanthrene was removed, total COD removed increased to 81.5%, 77.2% and 68.7% using N₂, O₂ and air–Fe NPs, respectively. In addition, Fe NPs were confirmed by scanning electron microscopy (SEM) and X-ray energy-dispersive spectroscopy (EDS). Finally, the degraded metabolites were identified by GC–MS to understand the degradation pathway]]> Sat 24 Mar 2018 07:37:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30779 2+ and Cu²⁺ on the oxidative degradation of Amoxicillin (AMX) by heterogeneous Fenton-like oxidation using nanoscale zero-valent iron (nZVI) as a catalyst was investigated. It was found that about 90.0% and 54.7% of AMX was degraded in the presence of 1 mM Cu²⁺ and 1 mM Mg²⁺ ions respectively, while 60.2% of AMX was removed by the control sample. Scanning electron microscopy (SEM) indicated that nZVI aggregated visibly after degradation of amoxicillin. X-ray photoelectron spectrometer (XPS) confirmed the reduction of Cu²⁺ to Cu⁰ by Fe⁰ on nZVI’s surface to form similar Fe/Cu bimetal to accelerate the degradation of AMX, and magnesium oxides or hydroxides formed on the surface of nZVI to restrain the removal of AMX. X-ray diffraction (XRD) demonstrated the existence of Fe⁰ in fresh nZVI and the corrosion aggregation of nZVI to form iron oxides or hydroxides after reaction. Kinetics studies demonstrated a pseudo first-order kinetics model for the oxidative degradation with the observed maximum K_obs as 0.0867 min⁻¹ in the presence of 1 mM Cu²⁺. The reason for this enhanced bimetallic catalytic activity is discussed.]]> Sat 24 Mar 2018 07:37:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30818 eucalyptus leaf extracts. More than eight major compounds in eucalyptus leaf extracts, which may serve as reducing and capping agents, were identified using Gas Chromatography-Mass Spectrometer (GC–MS). The obtained Fe NPs and Fe/Ni NPs were characterized using Fourier Translation Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TG), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray Diffraction (XRD), and X-ray Photoelectron Spectroscopy (XPS). The results demonstrated that: (1) the presence of Fe in Fe NPs, and Fe and Ni in Fe/Ni NPs; (2) the coating organic compounds may be responsible for the capping and efficient stabilization of Fe and Fe/Ni NPs. Fe NPs and Fe/Ni NPs were then used to degrade methyl orange (MO) in aqueous solution. Only 29.2% of MO was removed from aqueous solution using Fe NPs, while 99.6% of MO was removed using Fe/Ni NPs. Furthermore the removal of MO using Fe NPs and Fe/Ni NPs followed pseudo-first-order kinetics.]]> Sat 24 Mar 2018 07:37:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26341 Sat 24 Mar 2018 07:35:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26611 Bacillus fusiformis and Fenton oxidation of their degraded metabolites using nanoscale zero-valent iron (nZVI). A 99.0% naphthalene was biodegraded by B. fusiformis in 96 h, while only 59.4% chemical oxygen demand (COD) was removed, indicating that the degraded metabolites existed in solution. To further degrade the metabolites, nanoscale zero-valent iron (nZVI) was used as heterogeneous catalyst for Fenton-like oxidation of the metabolites after biodegradation lasting 40 h. Results showed that the total the removal COD increased from 36.4% to 91.6% at pH 3.0, 1.0 g L⁻¹ nZVI, 10.0 mM L⁻¹ H₂O₂ and temperature of 35 °C. Scanning electron microscopy (SEM) showed the aggregation and corrosion of nZVI. X-ray diffraction (XRD) confirmed the existence of Fe⁰ and the presence of iron oxide (Fe(II)) and iron oxohydroxide (Fe(III)). A possible degradation pathway was proposed since two naphthalene metabolites (1-Naphthalenol and 1,4-Naphthalenedione) were detected by GC–MS.]]> Sat 24 Mar 2018 07:33:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30000 4, FeCl₃ and Fe(NO₃)₃) was evaluated towards three soil microalgal isolates, Chlorella sp. MM3, Chlamydomonas sp. MM7 and Chlorococcum sp. MM11. Interestingly, all the three iron salts gave different EC50 concentrations; however, ferric nitrate was found to be significantly more toxic followed by ferrous sulphate and ferric chloride. The EC₅₀ analysis revealed that Chlorella sp. was significantly resistant to iron compared to other microalgae. However, almost 900 µg g^-1 iron was accumulated by Chlamydomonas sp. grown with 12 mg L^-1 ferric nitrate as an iron source when compared to other algae and iron salts. The time-course bioaccumulation confirmed that all the three microalgae adsorb the ferric salts such as ferric nitrate and ferric chloride more rapidly than ferrous salt, whereas intracellular accumulation was found to be rapid for ferrous salts. However, the amount of iron accumulated or adsorbed by algae, irrespective of species, from ferrous sulphate medium is comparatively lower than ferric chloride and ferric nitrate medium. The Fourier transform infrared spectroscopy (FTIR) analysis shows that the oxygen atom and P = O group of polysaccharides present in the cell wall of algae played a major role in the bioaccumulation of iron ions by algae.]]> Sat 24 Mar 2018 07:28:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26475 -1), to simultaneously determinate multiple petroleum hydrocarbons (PHs) in real mixture samples. This system includes: an object oriented baseline correction; Band decomposition (curve fitting) method with mathematical optimization; and Artificial Neural Network (ANN) for determination, which is suitable for the characteristics of this IR regions, where the spectra are normally with low signal to noise ratio and high density of peaks. BTEX components are potentially lethal carcinogens and contained in many petroleum products. As a case study, six BTEX components were determinate automatically and simultaneously in mixture vapor samples. The robustness of the BTEX determination was validated using real petroleum samples, and the prediction results were compared with gas chromatography-mass spectrometry (GC-MS).]]> Sat 24 Mar 2018 07:27:14 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26710 Sat 24 Mar 2018 07:26:22 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31048 Sat 24 Mar 2018 07:25:47 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28211 in situmonitoring. This article outlines an application of the ET system to determine chloride (Cl) simultaneously, and multi cationic metal ions, including calcium (Ca), cadmium (Cd), copper (Cu) and lead (Pb). In this study, Principal Component Analysis (PCA) was applied as a data compaction technique to reduce the complexity of data from the ISE array without losing much information. A patent data preprocessing method, geneticICA, was utilized to improve the prediction accuracy of ANN. Moreover, Orthogonal Experiment Design was employed for minimizing the number of training samples without losing any quality characteristics for the specific ions. Using our methodology means that results can be obtained rapidly and accurately without disturbing the natural speciation. The robustness and appropriateness of the approach were assessed using the mean relative error (MRE). When configured and optimized, the ET system can quantify the concentration of the four desired metals and chloride with the average MRE being lower than 0.10.]]> Sat 24 Mar 2018 07:23:51 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25136 Burkholderia vietnamiensis C09V (C09V) was immobilized on beads and used for simultaneous removal of both heavy metals and crystal violet (CV). The results showed that removal of CV and metal ions using immobilized cell bead (biomaterial) was more efficient than that of free cells, wherein 89.4% of CV and 64.1% of Cu(ii) were removed after 42 h of using the biomaterial, whilst only 27.1% of CV and 23.9% of Cu(ii) were removed by free cells. Similar results were also observed in the CV and Cr(vi) removal. Fourier transform infrared spectroscopy (FTIR) revealed the change of functional groups in the presence of heavy metals. Scanning electron microscopy (SEM) showed that the existence of Cu(ii) and Cr(vi) affected the cellular morphology of the strain. X-ray energy-dispersive spectrometer (EDS) indicated that Cu(ii) and Cr(vi) adsorbed. Further Cr(vi) reduced to Cr(iii) was observed by X-ray photoelectron spectroscopy analysis (XPS). Finally, reusability and wastewater application were carried out, which shows that this functional material has a potential for co-removal of CV and heavy metals.]]> Sat 24 Mar 2018 07:17:12 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24958 Sat 24 Mar 2018 07:14:18 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24773 Chlorella sp. MM3 biomass produced from the remediation of brewery wastewater. The algal growth characteristics, biomass production, nutrient removal, and nanoparticle synthesis including its characterisation were studied to prove the above approach. The growth curve of Chlorella depicted lag and exponential phase characteristics during the first 4 days in a brewery wastewater collected from a single batch of brewing process (single water sample) indicating the growth of algae in brewery wastewater. The pollutants such as total nitrogen, total phosphorus and total organic carbon in single water sample were completely utilised by Chlorella for its growth. The X-ray photoelectron spectroscopy spectra showed peaks at 706.56 eV, 727.02 eV, 289.84 eV and 535.73 eV which corresponded to the zero-valent iron, iron oxides, carbon and oxygen respectively, confirming the formation of iron nanoparticle capped with algal biomolecules. Scanning electron microscopy and particle size analysis confirmed the presence of spherical shaped iron nanoparticles of size ranging from 5 to 50 nm. To our knowledge, this is the first report on nanoparticle synthesis using the biomass generated from phycoremediation of brewery wastewater.]]> Sat 24 Mar 2018 07:14:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25178 eucalyptus leaf extracts was used to remove mixed Cr(VI) and Cu(II), where the efficiency was 58.9% and 33.0%, respectively. In contrast, only 20.2% of Cr(VI) and 11.8% of Cu(II) were removed by adsorption using eucalyptus leaf extracts. In addition, the removal mechanism for mixed Cr(VI) and Cu(II) based on both adsorption and reduction by Fe NPs was confirmed by various characterization techniques, including the formations of Fe NPs, iron oxides and capping layer. Furthermore, the kinetics suggested that firstly, their sorption followed the pseudo second-order model well; and secondly, reduction of Cr(VI) and Cu(II) followed the pseudo-first-order model well. Finally, Fe NPs not only removed Cr(VI) and Cu(II), but also Pb(II) and Zn(II) in electroplating wastewater. This provides a new insights into the removal of metal ions using green Fe NPs with a low cost and environmentally friendly remediation strategy.]]> Sat 24 Mar 2018 07:13:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24555 Eisenia fetida, and the soil health was investigated. C-nZVI at concentration level of 3 g kg^-1 soil showed no effect on the survival of E. fetida in the three soil types. However, varying effects such as concentration-dependent increase in tissue iron concentration, lipid peroxidation, and damage to DNA molecules by C-nZVI were observed. C-nZVI at an exposure concentration of 60 mg kg^-1 soil induced oxidative stress in E. fetida. Tissue Fe concentration appeared correlated to the DNA damage. Oxidative stress and DNA damage may explain the toxicity mechanisms of nZVI to E. fetida.]]> Sat 24 Mar 2018 07:11:31 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24744 Sat 24 Mar 2018 07:11:00 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24996 Sat 24 Mar 2018 07:09:54 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24053 -1 was removed using nZVI, while more than 90% of MC-LR was removed using either bimetallic Fe/Ni or Fe/Pd after degrading for 120min. In addition, the results indicated that Fe⁰ was oxided to iron oxide or hydroxide after reacting with MC-LR, while Ni or Pd acted as the catalysis to prevent Fe⁰ corrosion and generating hydrogen via water reduction. Degradation of MC-LR by iron-based nanoparticles fitted well to the pseudo-first order kinetic model and the degradation was a diffusion-controlled reaction with low activation energies (8-21kJmol^-1). Finally, the degradation mechanisms of MC-LR using iron-based nanoparticles were proposed according to the LC-MS analysis. In nZVI case, when the MC-LR was quickly adsorbed on nanoparticles, electron transfer and H₂ generated from iron corrosion were generated and broke down the Adda composition of MC-LR. Based on corrosion in the Fe⁰-H₂O system, bimetallic Fe/Ni and Fe/Pd further utilized the abundant hydrogen radical decomposed from H₂ under the catalysis of Ni or Pd, and destroyed the Adda to form small molecules.]]> Sat 24 Mar 2018 07:09:43 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24054 Sat 24 Mar 2018 07:09:41 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36515 Mon 25 May 2020 14:00:47 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34261 Eucalyptus leaf extract (EL-RGO) was investigated, which was characterized with ultraviolet-visible spectroscopy (UV), Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and Thermal gravimetric analysis (TG). Eucalyptus leaf extract also play both reducing and capping stabilizing agents prepared EL-RGO as shown a good stability and electrochemical properties. This approach could provide an alternative method to prepare EL-RGO in large-scale production. Moreover, the good electrochemical property and biocompatibility can be used in various applications. In addition, the merit of this study is that both the oxidized products and the reducing agents are environmental friendly by green reduction.]]> Mon 25 Feb 2019 11:39:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47494 Mon 23 Jan 2023 11:47:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52286 Mon 09 Oct 2023 10:12:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41286 Mon 01 Aug 2022 11:41:28 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41285 Mon 01 Aug 2022 11:34:31 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45475 Fri 28 Oct 2022 14:30:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34241 Fri 22 Feb 2019 14:42:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44718 90% degradation over one week treatment. Surface capping of the synthesized material (GMP-nZVI) could enhance activation. The capping through controlled release of ferrous ion compared to C-nZVI might prevent scavenging of sulfate radicals. The inhibition of TPH degradation by mannitol demonstrated the role of hydroxyl radical in degrading TPH under GMP-nZVI activated persulfate oxidation system. In view of its TPH removal efficiency, low production cost and low environmental concerns, the GMP-nZVI has greater advantages over the chemically synthesized nanoparticles.]]> Fri 21 Oct 2022 09:32:25 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35133 Fri 21 Jun 2019 13:21:04 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35126 Fri 21 Jun 2019 12:52:56 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32675 Acinetobacter venetianus in 96 h, while the removal efficiency of chemical oxygen demand (COD) in the aqueous phase was only 56.8%, indicating that degraded metabolites existed in solution. To solve this problem, a Fenton-like system consisting of nanoscale zero-valent iron (nZVI) and hydrogen peroxide was used for further oxidation of the metabolites after biodegradation. Results showed that the total COD removal increased from 56.8% to 89% under the optimal condition. In addition, effects of initial pH (2.0–9.0), ZVI dosage (0–2.0 g L-1), hydrogen peroxide (H₂O₂) dosage concentration (0–15 mmol L-1) and temperature (298–308 K) on the treatment efficiency of the combined process were studied. Scanning electron microscopy (SEM) demonstrated that changes to the surface of nZVI occurred. GC-MS revealed that the degraded metabolites were mineralized practically by nZVI/H₂O₂ system. The results points towards the potential of Fenton-like oxidation as a short post-treatment after a biological process for the treatment of organic pollutants in wastewater.]]> Fri 17 Nov 2023 11:42:05 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41801 Fri 12 Aug 2022 12:24:43 AEST ]]>