Study the Effect of Imposing Surfactants toward the Evaporation of Low Molecular Weight Alcohol

H.H. Mohammad (1) , Zain Sharifuddin Md. (2) , Khan Rashid Atta (2) , Khalid Khalisanni (2)

1 UM - Chemistry Department, University of Malaya
2 Chemistry Department, University of Malaya

In this paper, Reversed-Flow Gas Chromatography (RF-GC) is utilized to investigate the evaporation of low molecular weight alcohol. Evaporation rates as well as the diffusion rates of methanol are determined with a surfactant monolayer on the surface of the liquid; while nitrogen acts as carrier gas, at 313 K. The precision (>99.9%) and accuracy of this investigation demonstrates the potential of current methodologies for environmental impact studies; this is further verified when the results are compared with the available literature. The varying evaporation rates of methanol in the presence of varying amounts of Triton X-100 reflects that application of surfactants do damper the evaporation rates of liquid pollutants; without interference with the former's diffusion coefficients. High amounts of Triton X-100 are required for retardation of evaporation rates, suggesting the formation of a densely packed surface monolayer or the formation of an insoluble monolayer.

Mots clés: flow gas-chromatography low-solubility contaminants mass-transfer coefficients diffusion-coefficients water bodies pure liquids interface rates retardation atmosphere Reversed-Flow Gas Chromatography (RF-GC)

Domaines: Chimie analytique; Génie chimique

H.H. Mohammad, Zain Sharifuddin Md., Khan Rashid Atta, Khalid Khalisanni. Study the Effect of Imposing Surfactants toward the Evaporation of Low Molecular Weight Alcohol. International Journal of Environmental Science and Development, 2013, 4 (4), pp.5. ⟨10.7763/IJESD.2013.V4.381⟩. ⟨hal-00975135⟩