This thesis consists of two subjects, penetration of a coating fluid into paper and molecular simulation of pillared clays and adsorption of multicomponent gas mixture in them. The first part, discusses the characterization of the microstructure of the paper, and penetration of …
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Effects of silicate, phosphate, sulfate, and carbonate on removal of arsenite [As(III)] and arsenate [As(V)] by coprecipitation with ferric chloride were studied in simple KNO3 solution and in Bangladesh groundwater. Silicate significantly decreased As(III) removal when the sili…
Anionic dispersion polymerization in a hexane medium was applied to the synthesis of monodisperse polystyrene particles with a controlled size in the range of 1.41-7.14 μm, and having narrow molecular weight distributions (polydispersity index ranging from 1.02 to 1.28). Sec-but…
This thesis is based on two projects involving work on Pt(111) and Sn/Pt(111) surface alloys. The first project focused on the adsorption and surface chemistry of pyridine, cyclohexylamine, and piperidine, which were studied on a Pt(111) single crystal in ultrahigh vacuum (UHV) …
Using a variable temperature scanning tunneling microscope, we have studied several adsorbates on silicon surfaces. We have studied the adsorption characteristics of H\sb2S on Si(111)-(7 × 7). H\sb2S adsorbs dissociatively at sub-monolayer coverage, from 50 to 300 K, with HS bon…
Hydrogen sulphide needs to be removed from natural gas for economic and environmental reasons. Adsorption is a commonly used operation to remove H2S, and the development of novel adsorbents with larger capacity and selectivity is an active area of research. This thesis focuses o…
The research aimed to develop chemically modified PIM-1s for use in adsorption and gas separation processes. In particular, the nitrile group in PIM-1 was converted to several different functional groups to manipulate the interaction ability of PIM-1 with different species. Synt…
The cuticular wax film biointerface is a key component of plants and essential for the well-being of all plant species, from controlling the transport of water and active ingredients (a.i) across the plant surface to protecting against external environmental attacks, fungi and p…
The adsorption of biologically active molecules, such as the DNA bases, amino acids, on solid surfaces has been the subject of a number of experimental and theoretical studies in the past years. The understanding of the self-assembly mechanism of bioactive molecules on surfaces …
The experimental data and results demonstrated here illustrate the preparation and application of mesoporous metal oxides in energy storage, adsorption, and catalysis. First, a new method of controlling the pore size and wall thickness of mesoporous silica was developed by contr…
The investigation of harmful semi volatile organic compounds (SVOC) in the indoor environment is important because on average people spend over 90% of their time indoors. Lindane, an SVOC which was widely used in the UK until 2004, adsorbs to house dust. House dust acts as a res…
This work investigated the synthesis, characterisation and properties of known and novel scandium carboxylate Metal-organic Frameworks (MOFs). The first part reports the performance of these Sc-MOFs as Lewis acid catalysts. The porous MOF scandium trimesate MIL-100(Sc) and the s…
Economic utilisation of biogas arising from sewage sludge is hampered by the need to remove siloxanes, which damage gas engines upon combustion. This thesis applies on-line Fourier transform infrared spectroscopy to measure siloxanes in biogas upstream and downstream of the acti…
A study of adsorption equilibria of oxygen, nitrogen and oxygen-nitrogen mixtures on types 4A, 5A, 13X and Na-Mordenite molecular sieve pellets has been made. Pure component isotherms, using a volumetric apparatus, have been measured for each gas on each adsorbent at pressures u…
This thesis is concerned with applying engineering principles to the use of polymeric nanoporous adsorbents for use in blood purification to obtain original knowledge. Styrene divinylbenzene copolymer nanoporous adsorbents offer a potential means to remove middle molecular (MM) …
During the production of paper in paper mills, detrimental wood resin is released into the water circuit of the mill during the pulping process of the wood into fibres. This wood resin, termed pitch, can detrimentally deposit on the paper and on the paper machine equipment. The …
There is a significant problem for the paper recycling industry known as “stickies”. “Stickies” are tacky species, present in recycled paper and coated broke, derived from coating formulations, adhesives, etc. They impact negatively on paper quality and cause web runnability pro…
This thesis investigates the underlying causes of friction and ine ciency within an internal combustion engine, focusing on the ring-liner conjunction in the vicinity of the power-stroke top dead centre reversal. In such lubricated contacts, friction is the result of the interpl…