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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Polyethersulphone-sodalite (PES-SOD) mixed-matrix membranes: prospects for acid mine drainage (AMD) treatment
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Polyethersulphone-sodalite (PES-SOD) mixed-matrix membranes: prospects for acid mine drainage (AMD) treatment

机译：聚醚砜-钠钠盐（PES-SOD）混合基质膜：酸性矿井排水（AMD）处理的前景

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This article presents the outcome of a preliminary investigation into the application of polyethersulphone (PES)-sodalite (SOD) mixed-matrix membranes for add mine drainage (AMD) treatment PES-SOD membranes loaded with different amounts of SOD particles were fabricated using the phase inversion method, and evaluated for AMD treatment. The morphology, phase purity, and surface properties of the SOD particles and die membrane were checked using scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, respectively. In addition, the mechanical strength of the membranes was evaluated using a texture analyser. Separation performance (metal ion rejection) of the membranes and the effect of SOD loading on the membrane performance during AMD treatment were also studied. The cations in the AMD (feed stream) and the permeate stream were determined quantitatively using atomic absorption spectropho-tometry (AAS). The results of the investigation reveal that mechanical strength (Young's modulus and tensile strength) of the membrane was enhanced at increasing SOD loading. In addition, the membrane flux increased at increasing SOD loadings and the selectivity of the membrane towards Mn2+, Pb2+, Cu2+, A13+, and Mg2+ also increased. The highest membrane rejection of 57.44% was recorded for Pb2+, and the membrane displayed a rejection of 6% towards Mn2+. All the PES-SOD membranes displayed better performance compared to an equivalent unloaded PES membrane. As far as we know, this is the first report on the application of PES-SOD mixed-matrix membranes to AMD treatment However, optimization of the synthesis protocol and operational conditions is needed to improve the performance of the membrane.
机译：本文介绍了对聚醚砜（PES）-钠钙石（SOD）混合基质膜在矿井排水（AMD）处理中应用的初步研究结果，该相制备了装载有不同量SOD颗粒的PES-SOD膜倒置法，并进行AMD治疗评估。分别使用扫描电子显微镜（SEM），X射线衍射（XRD）和傅里叶变换红外（FTIR）光谱检查了SOD颗粒和膜的形貌，相纯度和表面性质。另外，使用质地分析仪评价膜的机械强度。还研究了膜的分离性能（金属离子排斥性）以及SOD负载对AMD处理期间膜性能的影响。使用原子吸收分光光度法（AAS）定量测定AMD（进料流）和渗透液中的阳离子。研究结果表明，膜的机械强度（杨氏模量和拉伸强度）随着SOD负载的增加而增强。此外，膜通量在SOD负载增加时增加，并且膜对Mn2 +，Pb2 +，Cu2 +，A13 +和Mg2 +的选择性也增加。记录到的最高的Pb2 +膜截留率为57.44％，而膜对Mn2 +的截留率为6％。与同等的未装载PES膜相比，所有PES-SOD膜均表现出更好的性能。据我们所知，这是PES-SOD混合基质膜在AMD治疗中的首次报道。然而，需要优化合成方案和操作条件以改善膜的性能。

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