https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52210 2 (amorphous) from ICP standard solution, but a mixture of Be(OH)₂ (alpha), Be(OH)₂ (beta) and ternary Na/S-Be (ΙΙ)-OH(s) solid phase were formed from BeSO₄ solutions. The precipitation of Be started at relatively lower pH at higher concentrations than at the lower Be concentration as indicated by both laboratory data and simulation. Across the pH range, the Be sorption curve was divided into three phases, these being pH 3-6, pH 6-10, and pH > 10, within which sorption of Be with soil was 9-97%, 90-97%, and 66-90%, respectively. Beryllium solubility was limited at pH > 7, but a sorption study with soil showed chemisorption under both acidic and alkaline pH (pH 5.5 and 8) conditions, which was confirmed by FTIR and XPS analysis. At pH 5.5 (specifically relevant to the study site), sorption of Be was 72-95%, in which 77% and 46% Be was respectively sorbed by separated fulvic and humic acid fractions. The irreversible chemisorption mechanism was controlled by SOM at higher pH, and by metal oxyhydroxides at lower pH. Both organic and inorganic components synergistically influence the specific chemisorption of Be at the intermediate pH 5.5 of field soil.]]> Wed 07 Feb 2024 14:46:21 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46989 Tue 13 Dec 2022 09:35:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39814 90% degradation of MO occurred by 120 ± 5.21, 75 ± 3.15 and 90 ± 3.61 min, respectively. Composites showed excellent catalytic reusability and environmental nontoxicity. Therefore, as effective and safe catalysts, they can shed light on exploring further usage in the environment and industrial set-ups.]]> Tue 09 Aug 2022 15:38:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38993 intraparticle diffusion (R2 = 0.93) > pseudo-first-order (R2 = 0.87). Energy-dispersive X-ray spectroscopy (EDS) elemental mapping demonstrated that MB has a co-distribution with silicon, aluminium, and alginate carbon phase but is limited with iron and nickel, indicating HNTs and alginate polymer performed as sorption sites, whereas NiZnFe4O4 performed as a catalyst. The presence (post-sorption) and absence (pre-sorption) of inorganic, total carbon or total organic carbon content at different solution pH, contact time, and initial concentration of MB demonstrated that the adsorbent act as a catalyst as well for degradation of MB. NiZnFe4O4-HNT@alg triggers efficient removal of MB with the assist of adsorption and catalytic degradation at broad solution pH. A comparison in removal of MB by various adsorbents including, biochars, clays, activated carbon, nanoparticles, polymers, nano composites, graphene oxides, carbon nanotubes, and polymer beads with the result of this study were performed, illustrating competitive sorption capacity of NiZnFe4O4-HNT@alg.]]> Mon 29 Jan 2024 18:52:42 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:56267 Fri 23 Aug 2024 10:34:19 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51710 Fri 15 Sep 2023 14:16:08 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55670 Fri 14 Jun 2024 10:25:48 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39009 Fri 08 Apr 2022 15:53:39 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52954 Fri 03 Nov 2023 11:04:28 AEDT ]]>