https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 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: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:45475 Fri 28 Oct 2022 14:30:56 AEDT ]]>