Extraction of dimethylformamide in the presenct of sodium thiocyanate

Lavrova, O. A.; Mokosina, N. N.; Agranovskii, I. N.; Karchmarchik, O. S.

doi:10.1007/bf00548039

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2011

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“…Therefore a large amount of wastewater containing DMF is generated and the DMF must be removed both for reasons of economy and to protect the environment. Several methods include distillation, solvent extraction and membrane separation are used to recover the DMF from the wastewater [1,2]. Although treated by these methods, there is still a wastewater containing DMF of low concentration such as 1 g/L below.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Equilibrium Studies on Adsorption of Dimethylformamide by Macroporous Chitosan Membranes

Chen

Liu

2011

AMR

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The adsorption of dimethylformamide (DMF) by macroporous chitosan membranes using silica gel as porogen is studied. The morphology, porosity and DMF adsorption capacity of the macroporous chitosan membrane were measured. SEM photographs show the pores in the membrane dispersed uniformly. DMF adsorption capacity of the macroporous chitosan membranes reached 145 mg/g. Adsorption isotherm of DMF on the macroporous chitosan membranes was determined and correlated with Langmuir and Freundlich equations. The adsorption equilibrium data fitted well with Freundlich equation. The adsorption kinetics was found to follow the pseudo second-order kinetic model.

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Section: Introductionmentioning

confidence: 99%