不同因素对 TiO/AlO-PVDF 超滤膜处理含油废水的影响。
Effect of different factors on treatment of oily wastewater by TiO/AlO-PVDF ultrafiltration membrane.
机构信息
School of Environmental Science and Engineering, Hainan University, Haikou, People's Republic of China.
Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, People's Republic of China.
出版信息
Environ Technol. 2022 Aug;43(19):2981-2989. doi: 10.1080/09593330.2021.1912832. Epub 2021 Apr 18.
An ultrafiltration membrane developed by our research group was applied to treat simulated emulsified oil wastewater. ATR-FTIR, SEM, TEM, and Zeta potential analyzes demonstrated that the modified ultrafiltration membrane (MM) has excellent stability and anti-fouling capacity than origin membrane (OM), which possesses a pure water flux of 260 L·m·h and oil/water (o/w) rejection of 98.5 ± 0.33%. Inorganic salt CaCl has more considerable influence than MgSO and NaCl under the same mass concentration in the two membranes UF process. Along with concentration increasing, flux sharply reduces; meanwhile, the rejection has an opposite trend. Moreover, permeation flux has a maximum value, and the rejection also gets its optimal state under neutral conditions during the pH value of 2-12. The membrane also exhibits excellent anti-fouling performance and anti- o/w adsorption properties with an adsorption rate below 0.8% compared with OM, which has an adsorption rate of nearly 2.1%, respectively. A kind of new UF membrane developed by our research group was applied to treat simulated o/w. ATR-FTIR, SEM, TEM, and Zeta potential analyzes demonstrated that PVDF-AlO/TiO material has excellent stability and anti-fouling capacity. CaCl has the greatest influence than MgSO and NaCl under the same mass concentration. Moreover, permeation flux has maximum value and the rejection also gets its optimal state under neutral conditions during pH 2-12. The membrane also exhibits excellent anti-fouling performance and anti-O/W adsorption properties with adsorption rate below 0.8% compared with OM which has an adsorption rate nearly 2.1%, respectively.
我们研究小组开发的一种超滤膜被应用于处理模拟乳化含油废水。ATR-FTIR、SEM、TEM 和 Zeta 电位分析表明，与原始膜（OM）相比，改性超滤膜（MM）具有优异的稳定性和抗污染能力，其纯水通量为 260 L·m·h，油/水（o/w）截留率为 98.5±0.33%。在相同质量浓度下，无机盐 CaCl 在两种膜 UF 过程中的影响比 MgSO 和 NaCl 更显著。随着浓度的增加，通量急剧下降；同时，截留率呈相反趋势。此外，在 pH 值为 2-12 时，通量在中性条件下达到最大值，截留率也达到最佳状态。与 OM 相比，该膜的吸附率接近 2.1%，吸附率低于 0.8%，表现出优异的抗污染性能和抗 o/w 吸附性能。我们研究小组开发的一种新型超滤膜被应用于处理模拟 o/w。ATR-FTIR、SEM、TEM 和 Zeta 电位分析表明，PVDF-AlO/TiO 材料具有优异的稳定性和抗污染能力。在相同质量浓度下，无机盐 CaCl 的影响比 MgSO 和 NaCl 更大。此外，在 pH 值为 2-12 时，通量在中性条件下达到最大值，截留率也达到最佳状态。与 OM 相比，该膜的吸附率接近 2.1%，吸附率低于 0.8%，表现出优异的抗污染性能和抗 o/w 吸附性能。
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