Timothy N. Hunter
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View article: Influence of wettability on diffusion limited nanoparticle adsorption at gas-liquid interfaces
Influence of wettability on diffusion limited nanoparticle adsorption at gas-liquid interfaces Open
This study investigates the influence of hydrophobicity on particle adsorption by examining the behavior of hydrophobized silica particles at air-water interfaces. Langmuir-Blodgett (LB) trough studies of butanol (‘SiO-butane’) and hexanol…
View article: Combined clinoptilolite and Fe(O)OH for efficient removal of Cu(II) and Pb(II) with enhanced solid–liquid separation
Combined clinoptilolite and Fe(O)OH for efficient removal of Cu(II) and Pb(II) with enhanced solid–liquid separation Open
This study investigated combining fine clinoptilolite with iron hydroxide coagulant, as a cost-effective, dual-purpose flocculant for enhanced removal of Pb 2 ⁺ or Cu 2 ⁺ ions, along with the solid–liquid separation and physicochemical ana…
View article: Numerical Simulation of the Agglomeration Behaviour of Spheroidal Particle Pairs in Chaotic Flows
Numerical Simulation of the Agglomeration Behaviour of Spheroidal Particle Pairs in Chaotic Flows Open
Interactions between attractive spheroidal particles are studied in boxes of chaotic flow under the action of a homogeneous and isotropic forcing technique. The fully resolved fluid field and structure-resolved particle–fluid coupling regi…
View article: Numerical investigation of fill height and secondary currents in an inclined partially filled pipe flow
Numerical investigation of fill height and secondary currents in an inclined partially filled pipe flow Open
Partially filled pipes are used in industrial processes to transport liquid and particle laden flows. A good understanding of the three-dimensional flow in these pipes is critical to ensure material is transported without issue, for exampl…
View article: Synergistic effect of Fe and Ni on carbon aerogel for enhanced oxygen reduction and H2O2 activation in electro-Fenton process
Synergistic effect of Fe and Ni on carbon aerogel for enhanced oxygen reduction and H2O2 activation in electro-Fenton process Open
A novel cathode, iron-nickel alloy modified carbon aerogel (FeNi-CA), was successfully synthesized and utilized as the cathode in an electro-Fenton process for acetaminophen degradation. The incorporation of Fe and Ni in the carbon matrix …
View article: Numerical simulation of the agglomeration behaviour of spheroidal particles in homogeneous and isotropic turbulence
Numerical simulation of the agglomeration behaviour of spheroidal particles in homogeneous and isotropic turbulence Open
Interactions between attractive spheroidal particle pairs are studied in boxes of homogeneous and isotropic turbulence. The fully resolved turbulence field and structure-resolved particle-fluid coupling regime are obtained through direct n…
View article: Yield stress modification of suspensions of irregularly shaped particles by addition of spherical colloidal silica
Yield stress modification of suspensions of irregularly shaped particles by addition of spherical colloidal silica Open
Magnesium hydroxide (Mg(OH)2) suspensions are encountered in the nuclear industry as legacy waste that is to be packaged for long-term storage. It is desirable to increase the solids content of the waste to minimize the total volume, yet t…
View article: Prediction of Horizontal Pipe Slurry Flow with Hindered Settling
Prediction of Horizontal Pipe Slurry Flow with Hindered Settling Open
Efficient separation of complex flocculated waste sludges and suspensions is critically important to many waste processing activities where particle-laden turbulent flows are prevalent.For the primary separation of flocculated wastes, clar…
View article: Simulation of bidisperse colloidal centrifugal sedimentation using a mixture viscosity model
Simulation of bidisperse colloidal centrifugal sedimentation using a mixture viscosity model Open
Understanding the sedimentation behavior of bidisperse colloidal suspensions is critical in determining their stability and separation. While centrifugation is often used to accelerate separation, the settling of bidisperse colloids and th…
View article: Functionalization of expanded MXene to recover palladium ions by capacitive deionization
Functionalization of expanded MXene to recover palladium ions by capacitive deionization Open
This work prepared a sulfur/nitrogen co-doped MXene (S/N-MXene) electrode material via a facile hydrothermal method. The electrode material has been specifically designed to recover palladium(II) from wastewater. Numerous S/N-containing fu…
View article: Characterizing Flocculated Mineral Sediments with Acoustic Backscatter, Using Solid and Hybrid Scattering Models
Characterizing Flocculated Mineral Sediments with Acoustic Backscatter, Using Solid and Hybrid Scattering Models Open
This study investigated the performance of an acoustic backscatter system (ABS) for the in situ particle characterization of complex wastes. Two sediments were used: a fine, milled calcite that was flocculated with anionic polyacrylamide a…
View article: Amphiphilic block copolymers as dual flocculation-flotation agents for rapid solid–liquid separation of radioactive wastes
Amphiphilic block copolymers as dual flocculation-flotation agents for rapid solid–liquid separation of radioactive wastes Open
The potential of poly(acrylic acid)-b-poly(n-butyl acrylate) as a dual flocculant-collector in combined flotation-sedimentation dewatering operations was investigated. The amphiphilic block copolymers were synthesised with consistent hydro…
View article: Opportunities for process intensification technologies in nuclear effluent treatment: A review of precipitators, adsorbers and separators
Opportunities for process intensification technologies in nuclear effluent treatment: A review of precipitators, adsorbers and separators Open
This paper reviews the technologies and opportunities for process intensification (PI) in nuclear effluent treatment. PI is an area that has already created many innovations within the chemicals industry, and offers a growing field of rese…
View article: Analysis of Adsorbed Polyphosphate Changes on Milled Titanium Dioxide, Using Low-Field Relaxation NMR and Photoelectron Spectroscopy
Analysis of Adsorbed Polyphosphate Changes on Milled Titanium Dioxide, Using Low-Field Relaxation NMR and Photoelectron Spectroscopy Open
In this study, changes in the adsorbed amount and surface structure of sodium hexametaphosphate (SHMP) were investigated for aluminum-doped TiO2 pigment undergoing milling. Relaxation NMR was utilized as a potential at-line technique to mo…
View article: A chemically tailored capacitive deionization system for the enhanced removal of cesium from process water
A chemically tailored capacitive deionization system for the enhanced removal of cesium from process water Open
A capacitive deionization (CDI) electrode comprising ethylenediamine triacetic acid (EDTA) and 2D MXene (EDTA-MXene) is fabricated to separate Cs+ from strongly acidic process water. The method provides new direction for an advanced aqueou…
View article: Influence of flake size and electrolyte conditions on graphene oxide adsorption of ionic dyes
Influence of flake size and electrolyte conditions on graphene oxide adsorption of ionic dyes Open
Two graphene oxide (GO) materials were characterised and their performance as adsorbents for common ionic dyes was investigated. The GOs were demonstrated to possess significantly different flake sizes; here termed Smaller Flake GO (SFGO) …
View article: Characterising the sedimentation of bidisperse colloidal silica using analytical centrifugation
Characterising the sedimentation of bidisperse colloidal silica using analytical centrifugation Open
This study investigates the settling behaviour of bidisperse colloidal silica suspensions in two different size ratios (100:500 nm and 500:800 nm) with various mixture ratios and volume fractions, using an analytical photocentrifuge. For d…
View article: Approximation of hindered zonal settling rates for flocculated inorganic/organic composite suspensions in inertial flow conditions
Approximation of hindered zonal settling rates for flocculated inorganic/organic composite suspensions in inertial flow conditions Open
Inorganic/organic composite nuclear wastes have poor settling properties which hinder major UK decommissioning operations. Improving the settling properties of these wastes and the accurate prediction of settling rates is therefore key. Ho…