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首页> 外文期刊>Journal of Polymers and the Environment >Demulsification and Oil Removal from Metalworking Fluids by Polyurethane Foam as Sorbent
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Demulsification and Oil Removal from Metalworking Fluids by Polyurethane Foam as Sorbent

机译：通过聚氨酯泡沫作为吸附剂从金属加工液中除浆和除油

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摘要

In this study polyurethane foam (p-PUF) was applied in tests of demulsification of metalworking fluids. The results showed the strong influence of the media pH on the oil adsorption. FTIR deconvolution elucidated that the acid media could improve the availability of urethane groups to participate of demulsification process. Results also showed that the foam has a maximum oil adsorption capacity of 541 mg g(-1)at pH 6 the turbidity removal from metalworking fluids by p-PUF was of 86% while at pH lower than 4, turbidity removal was higher than 99%. The demulsification process happens because of two types of interaction: hydrophobic and electrostatic. The Freundlich model showed a better fit to the experimental data and MDSP error of 1.5. p-PUF was used even five times without losing its sorption capacity.[GRAPHICS].
机译：在该研究中，将聚氨酯泡沫（P-PUF）用于金属加工液的破乳的试验中。结果表明培养基pH对油吸附的强烈影响。 FTIR去卷积阐明酸性介质可以改善聚氨酯基团的可用性，参与破乳过程。结果还表明，泡沫在pH6下具有541mg g（-1）的最大油吸附容量，P-Puf的金属加工液中的浊度为86％，而在pH下低于4，浊度去除高于99 ％。由于两种类型的相互作用：疏水和静电而发生破乳过程。 Freundlich模型显示更适合于1.5的实验数据和MDSP误差。 P-Puf甚至使用了五次而不会失去吸附能力。[图形]。

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