- Chemical and Biomolecular Engineering - Research Publications
Chemical and Biomolecular Engineering - Research Publications
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ItemPredicting Transmembrane Pressure Rise from Biofouling Layer Compressibility and PermeabilitySkinner, SJ ; Stickland, AD ; Scales, PJ (WILEY-V C H VERLAG GMBH, 2018-01)Abstract The operation of filtration membranes for wastewater treatment is severely affected by biofouling formation, which causes a rapid increase in transmembrane pressure (TMP) in constant rate filtration. The TMP rise is often attributed to particulate fouling within the membrane, but the external fouling layer or filter cake contributes significantly. The fouling is highly compressible, so any model must incorporate cake compression. A one‐dimensional controlled rate model based on compressible cakes and accurate sludge properties is proposed to predict the TMP rise needed to maintain constant flux. Increased compressibility results in more rapid TMP rise. Model predictions were compared to pilot‐plant data and showed good correlation, without assuming fouling within the membrane. Optimization of cycle times and flux rates are performed.
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ItemImpact of Fly Ash on the Membrane Performance in Postcombustion Carbon Capture ApplicationsAlharthi, K ; Christianto, Y ; Aguiar, A ; Stickland, AD ; Stevens, GW ; Kentish, SE (AMER CHEMICAL SOC, 2016-04-27)
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ItemMetal-Phenolic Supramolecular GelationRahim, MA ; Bjornmalm, M ; Suma, T ; Faria, M ; Ju, Y ; Kempe, K ; Muellner, M ; Ejima, H ; Stickland, AD ; Caruso, F (WILEY-V C H VERLAG GMBH, 2016-10-24)Materials assembled by coordination interactions between naturally abundant polyphenols and metals are of interest for a wide range of applications, including crystallization, catalysis, and drug delivery. Such an interest has led to the development of thin films with tunable, dynamic properties, however, creating bulk materials remains a challenge. Reported here is a class of metallogels formed by direct gelation between inexpensive, naturally abundant tannic acid and group(IV) metal ions. The metallogels exhibit diverse properties, including self-healing and transparency, and can be doped with various materials by in situ co-gelation. The robustness and flexibility, combined with the ease, low cost, and scalability of the coordination-driven assembly process make these metallogels potential candidates for chemical, biomedical, and environmental applications.
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ItemA non-linear viscoelastic model for sediments flocculated in the presence of seawater saltsGoni, C ; Jeldres, RI ; Toledo, PG ; Stickland, AD ; Scales, PJ (ELSEVIER, 2015-10-05)
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ItemCharacterization of Bed Densification in a Laboratory Scale Thickener, by Novel Application of an Acoustic Backscatter SystemHunter, TN ; Usher, SP ; Biggs, S ; Scales, PJ ; Stickland, AD ; Franks, GV ; Ge, W ; Han, Y ; Wang, J ; Wang, L ; Liu, X ; Zhou, J ; Li, J (Elsevier, 2015)
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ItemCompressive strength and capillary pressure: competing properties of compressible sediments that determine breakthrough pressureStickland, AD ; TEO, H ; Franks, GV ; Scales, PJ (Filtech Exhibitions Germany, 2012)
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ItemA compressional rheology model of fluctuating feed concentration during filtration of compressible suspensionsStickland, AD (PERGAMON-ELSEVIER SCIENCE LTD, 2012-06-18)