Removal of Copper from Hydrocarbon Fuels Using Novel Azamacrocycle Polymers

Copper Removal from Fuel by Solid-Supported Polyamine Chelating Agents

“…The length of the linker arm was thought to be crucial because the chain has to be sufficiently long to provide adequate exposure of the chelator to the soluble copper in fuel but not so long as to impair the mechanical stability of the linkage. However, we did not observe a noticeable dependence of copper-removal ability on the linker arm length in our previous report on cyclam polymers, where the linker arm was varied from 2 to 8 carbons. The extension of the linker length to 16 carbons for agarose and polystyrene did not appear to significantly impair the copper binding results.…”

“…The high metal affinity and selectivity of the polyamines make them attractive as chelators of choice for metal sensors, redox systems, or for water remediation, i.e., ion-flotation collectors . Adsorption or chemical attachment of chelators to solid support have been reported previously for chromatography − and for removal of metal ions from aqueous wastestreams. − However, previous to our recent communication, no report has been found of applying immobilized chelators for removal of metal ions, specifically Cu(II), from jet fuel.…”

“…The approach investigated in this study involves the removal of copper from jet fuel without otherwise changing the fuel constituency. We have previously described one method for the removal of copper from jet fuel based on using a cyclic chelator polymer . In this paper, we extend the approach to both cyclic and acyclic polyamine chelators and to different substrates.…”

Influences of protein films on antibacterial or bacteria-repellent surface coatings in a model system using silicon wafers

“…In the first step, 6-chloro-1-hexanol was esterified with an equimolecular amount of methacryloyl chloride in chloroform solution in the presence of dried potassium carbonate under an inert atmosphere at room temperature for seven days [25]. The liquid intermediate product was purified by column chromatography (SiO 2 as stationary phase and CHCl 3 as mobile phase) and the final yield was about 50%.…”

Synthesis of poly(acrylamide‐co‐4‐vinylpyridine) hydrogels and their application in heavy metal removal

“…Removal of metal ions from aqueous solution is a major industrial activity covering processes ranging from water softening to “leaching” of metals from ores to detoxification of wastewater and contaminated natural waters. Polymers containing appropriate ligand could provide a practical and economical means for removing dissolved metals present in parts per million (ppm) levels in wastewater and in organic media such as dodecane or jet fuels 9. The methods of removing heavy metals from water include precipitation, ion‐exchange, biosorption,10 and reverse osmosis 11…”