https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46234 4) or persulfate/iron(II) (PMS/Fe²⁺) enhanced coagulation as pretreatment for ceramic membrane ultrafiltration. The results showed that KMnO₄ pre-oxidation achieved a slightly more effective Mn removal, and was almost unaffected by the initial dissolved organic carbon (DOC) concentrations. PMS/Fe²⁺ removed UV254 more efficiently (above 90% at a dose of 0.25 mmol/L), compared with KMnO₄ (less than 60% UV254 removal). According to X-ray photoelectron spectroscopy (XPS) analysis of aggregates, both KMnO₄ and Fe²⁺/PMS oxidation resulted in the formation of MnO2 precipitate. Electron paramagnetic resonance(EPR) analysis demonstrated that only the reactors dosed with PMS/Fe²⁺ were able to generate the highly reactive hydroxyl radical(·OH). The production of ·OH caused significant rupture of algal cells and thus higher algal removal compared to the treatment with KMnO₄ (whereby insignificant cell breakage was observed). The cell rupture resulted in higher amounts of organic matter released in the systems containing PMS/Fe²⁺, as demonstrated by excitation-emission matrix (EEM) and protein analysis. Despite the elevated level of organic matter, adding PMS/Fe²⁺ was found to notably mitigate membrane fouling due to the formation of large flocs (311–533 μm) as well as the elimination of major ceramic membrane foulants, i.e. humic substances.]]> Wed 22 Mar 2023 17:30:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55320 Wed 15 May 2024 15:39:09 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53573 Wed 15 May 2024 15:05:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54800 Wed 13 Mar 2024 11:41:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50262 16.25 LMH). In conclusion, the novel strategy, PAC-MnOx filled ceramsite composite GDCM system, was satisfactory in treating manganese ion and ammonia-containing groundwater as well as encouraging extensive applications of membrane technologies for drinking water supply.]]> Wed 07 Feb 2024 14:41:48 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54044 Tue 30 Jan 2024 13:50:18 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54504 Tue 27 Feb 2024 15:32:02 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54439 Tue 27 Feb 2024 14:00:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54422 Tue 27 Feb 2024 13:57:48 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39825 5 mm. However, after 7 years in the garden, owing to natural degradation, weathering, or abrasion, microplastics are released. We categorize the plastic fragments into different groups, 5 mm–0.75 mm, 0.75 mm–100 μm, and 100–0.8 μm, using filters such as kitchenware, meaning we can collect microplastics in our gardens by ourselves. We then characterized the plastics using Raman image mapping and a logic-based algorithm to increase the signal-to-noise ratio and the image certainty. This is because the signal- to-noise ratio from a single Raman spectrum, or even from an individual peak, is significantly less than that from a spectrum matrix of Raman mapping (such as 1 vs. 50 × 50) that contains 2,500 spectra, from the statistical point of view. From the 10 g soil we sampled, we could detect the microplastics, including large (5 mm–100 μm) fragments and small (<100 μm) ones, suggesting the degradation fate of plastics in the gardens. Overall, these results warn us that we must be careful when we do gardening, including selection of plastic items for gardens.]]> Tue 26 Jul 2022 14:21:50 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52726 4 × 105 MPN/mL at the end and contributing to manganese removal, which could be also confirmed by the Electron Paramagnetic Resonance (EPR) analysis and Confocal laser scanning microscope (CLSM) analysis. Additionally, vertical aeration increased the MnOB species, including Bacillus, Leptothrix, zoogloea, Flavobacterium and Ferribacterium. Finally, the auto-catalytical oxidation mechanism of the dispersed birnessite was revealed via X-ray diffraction (XRD) analysis, XPS and Raman analysis. Vertical aeration assisted birnessite type functional layer GDCM is effective and promising, and with further optimization, this technology can potentially be considered as an alternative to safeguard the planet's drinking water supply.]]> Tue 24 Oct 2023 08:31:05 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54353 Tue 20 Feb 2024 16:19:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46296 Tue 15 Nov 2022 09:18:54 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46266 Tue 15 Nov 2022 08:07:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52760 Tue 14 Nov 2023 15:32:48 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47059 Tue 13 Dec 2022 15:39:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47050 Tue 13 Dec 2022 14:58:04 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47038 Tue 13 Dec 2022 14:22:22 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47034 Tue 13 Dec 2022 14:08:24 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47019 Tue 13 Dec 2022 12:44:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47011 Tue 13 Dec 2022 11:41:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46997 Tue 13 Dec 2022 10:26:36 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44336 Tue 11 Oct 2022 19:21:36 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45549 Tue 01 Nov 2022 10:56:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50670 Tue 01 Aug 2023 14:37:50 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50669 Tue 01 Aug 2023 14:30:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53999 Thu 25 Jan 2024 13:45:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50334 Thu 20 Jul 2023 08:37:09 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38264 2) and long Electrolysis Time (ET = 60 min). Meanwhile, EO-NF process enabled to reduce COD content from 60 mg/L to nearly 5 mg/L. Furthermore, regardless of the effect of EO process, NF could retain most NH₃-N because of the excellent performance of NF for ions rejection, and its permeate concentration was below 0.5 mg/L. EO was able to reduce membrane fouling notably, increasing the final flux (15 L/(m²·h)) of NF by 25.1% during long-term operation (240 h). Scanning electron microscopy-Energy dispersive spectrometry (SEM-EDS) showed that a porous layer formed on the vicinity of NF membrane in the case of filtrating EO effluent, in contrast to a uniform and dense biofouling layer generated during the direct NF. Besides, the content of adenosine triphosphate (ATP) and the number of bacterial colonies in the retentate of the EO-NF process were greater than those of the direct NF process. This resulted in a smaller amount of extracellular polymeric substances (EPS) attaching to the membrane surface, decreasing the tightness and hardness of the fouling layer in the case of EO, as indicated by CLSM analysis. Overall, considering its ability to effectively eliminate persistent contaminants and reduce membrane fouling, BDD-based EO is considered a promising pre-treatment option for future NF applications.]]> Thu 19 Aug 2021 16:19:38 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54294 Thu 15 Feb 2024 14:53:16 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50618 Mon 31 Jul 2023 14:35:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52823 Mon 30 Oct 2023 09:11:51 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46630 Mon 28 Nov 2022 15:02:25 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48686 Mon 27 Mar 2023 15:00:55 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52522 Mon 16 Oct 2023 10:45:55 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52324 Mon 09 Oct 2023 10:23:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48641 Fri 24 Mar 2023 13:30:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47301 Fri 13 Jan 2023 10:52:36 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47304 Fri 13 Jan 2023 10:52:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47291 Fri 13 Jan 2023 10:38:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47292 Fri 13 Jan 2023 10:38:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55588 Fri 07 Jun 2024 12:01:31 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50208 Fri 07 Jul 2023 10:52:17 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50207 Fri 07 Jul 2023 10:45:24 AEST ]]>