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Oil Diffusion Properties of Acoustic Foams for Oil Contaminated Water Treatment

机译：油污染水处理声泡沫的油扩散特性

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Synthetic open-cell polymer foams are promising materials for the treatment of oil sands process-affected water due to their oleophilic and hydrophobic properties. This paper presents the characterization of inexpensive and accessible polyester polyurethane foam for this application. The kinetics and adsorption equilibrium of emulsified oil onto the polymer adsorbent were studied at temperatures ranging from 20°C to 40°C and oil volume fractions in oil-inwater emulsions of 3% and 10%. The data were found to be well described by a sequential dual Fickian (SDF) model of diffusion in composite polymers. The model assumes two diffusion stages driven by different mechanisms, surface diffusion and clustering. In the first stage, at 30°C and 40°C, the diffusion coefficient increased with the concentration gradient, suggesting Fickian chemical or surface diffusion. The improved mass uptake at corresponding temperatures was attributed to the surface wetting and bonding between oil molecules and polymer. In the second stage, substantially low diffusivities and fractional mass uptakes were due to Fickian physical diffusion or clustering. In this stage, the mass uptake was a cumulative result of the clustering of emulsion molecules in the polymer voids, newly formed sites from swelling, and creeping of a low-viscosity crude.
机译：合成开放式细胞聚合物泡沫是由于其疏油和疏水性能治疗油砂过程受影响的水的有希望的材料。本文介绍了本申请的廉价且可接近的聚酯聚氨酯泡沫的表征。在10℃至40℃的温度下，研究了乳化油在聚合物吸附剂上的动力学和吸附平衡，油水乳液的油状乳液中的油体积分数为3％和10％。发现数据是通过复合聚合物中的顺序双Fickian（SDF）扩散模型很好地描述。该模型假设由不同机制，表面扩散和聚类驱动的两个扩散阶段。在第一阶段，在30°C和40°C时，扩散系数随着浓度梯度而增加，表明Fickian化学或表面扩散。相应温度下的改进的质量摄取归因于油分子和聚合物之间的表面润湿和粘合。在第二阶段，基本上低的扩散性和分数质量上升是由于Fickian的物理扩散或聚类。在该阶段，质量摄取是聚合物空隙中乳液分子聚集的累积结果，新形成的位点从溶胀，并且脱粘的粗粗。

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