We describe the preparation of polymethylmethacrylate/(rice husk ash)/polypyrrole (PMMA/RHA/PPy) composite membranes and their use as active agents for the removal of hexavalent chromium (Cr(VI)) and the organic dyes tartrazine (E102) and indigo carmine (IC). We prepared the membranes following a two-step process: initially, using the electrospinning technique, we obtained PMMA:RHA mats with various relative concentrations, and afterward we used an in situ chemical polymerization to incorporate polypyrrole chains onto the surface of the membrane fibers. We characterized the membranes by SEM, water contact angle and fiber diameter measurements, tensile tests, UV–Vis and FTIR spectroscopy. We have found that the incorporation of RHA in the ratio 1:0.1 led to an enhanced mechanical strength of the polymeric fibers. At pH 2, the PMMA/RHA/PPy membranes exhibited a good removal capacity for all three contaminants, estimated as 360.5 mg/g (after 150 min), 165.7 mg/g (after 60 min) and 142.9 mg/g (after 70 min), for Cr(VI), E102 and IC, respectively. We suggest that the PMMA/RHA/PPy membrane is a promising active material for application in efficient water remediation protocols, for combining advantages as a simple preparation methodology and a high adsorption capacity toward different types of contaminants.

我们描述了聚甲基丙烯酸甲酯/（稻壳灰）/聚吡咯（PMMA / RHA / PPy）复合膜的制备及其作为去除六价铬（Cr（VI））和有机染料酒石酸（E102）和靛红胭脂红（IC）。我们通过两步过程制备了膜：首先，使用静电纺丝技术获得了具有各种相对浓度的PMMA：RHA垫，然后使用了原位化学聚合将聚吡咯链结合到膜纤维表面上。我们通过SEM，水接触角和纤维直径测量，拉伸测试，UV-Vis和FTIR光谱对膜进行了表征。我们发现以1∶0.1的比例掺入RHA导致聚合物纤维的机械强度提高。在pH 2下，PMMA / RHA / PPy膜对所有三种污染物均显示出良好的去除能力，分别为360.5 mg / g（150分钟后），165.7 mg / g（60分钟后）和142.9 mg / g（70后）。 min），分别用于Cr（VI），E102和IC。我们建议PMMA / RHA / PPy膜是用于有效水修复方案中的有前途的活性材料，