Browsing Scientific Publications in Engineering Sciences by Subject "VDP::Mathematics and natural science: 400::Chemistry: 440"
Now showing items 1-6 of 6
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Catalytic oxidation and reduction of polycyclic aromatic hydrocarbons (PAHs) present as mixtures in hydrothermal media
(Journal article; Peer reviewed, 2012)The reactivity of fluorene, anthracene, and fluoranthene under oxidation and reduction conditions were investigated in this study. This project looks at catalytic and green approaches of converting PAHs to less toxic and/or ... -
Effect of heat on the adsorption properties of silica gel
(Journal article; Peer reviewed, 2012)Adsorption properties of silica gel have been attributed to the surface hydroxyl groups of silica gel. Some hydroxyl groups are free standing and called free silanol groups. Some are hydrogen bonded to neighbouring silanol ... -
Near infrared spectroscopic study on the adsorption of methanol on silica gel
(Journal article; Peer reviewed, 2013)The silanol groups on Silica gel surface are sites for adsorption of polar molecules. Alcohols and other polar molecules are easily adsorbed by forming hydrogen bondings with OH groups on silica gel surface. A study on the ... -
Pyrolytic formation of polycyclic aromatic hydrocarbons from sesquiterpenes
(Journal article; Peer reviewed, 2012)The products of the pyrolysis of four sesquiterpenes, β-caryophyllene, α-cedrene, longifolene and valencene, have been examined. Pyrolysis was carried out at 300, 400 and 500 °C, the products determined by GC–MS and then ... -
The nature of rest silanol groups on the surfaces of silica based solid phase extraction materials
(Journal article; Peer reviewed, 2013)Chemically bonded solid phase materials are very important in separation chemistry. The chemically modified silica gel contains rest silanol groups that can affect the retention properties when they are used for separation ... -
The use of lightweight expanded clay aggregate (LECA) as sorbent for PAHs removal from water
(Journal article; Peer reviewed, 2012)Lightweight expanded clay aggregate (LECA) has been explored as a sorbent for the removal of PAHs (phenanthrene, fluoranthene and pyrene) from water. The efficacy of LECA as a sorbent for PAHs was assessed using contact ...