Functionalized MgONanoparticle integrated with PVDF-PEG fibre enhances strength and contaminant separation efficacy

Mohammed Abdulsalam , Mohammed Umar Abba , Ibrahim Babangida Dalha , Badruddeen Saulawa Sani , Katibi Kayode Kamil , Kiman Silas , Ibrahim Garba Shitu , Bello Suleiman
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Abstract

The constituent recalcitrant color pigments and other organic pollutants (such as COD, and MLSS) in palm oil mill effluent (POME) are detrimental, yet the commonly employed conventional remediation method has been inefficient. This study focused on the development of an innovative hybrid membrane designed for efficient decolorization and separation of pollutants. The research involves the incorporation of magnesium oxide (MgO) nanoparticles at a varied loading (0.0–0.75 wt%) into polyvinylidene fluoride (PVDF) and polyethylene-glycol (PEG) hollow-fiber using blending dry-jet wet-swirling phase inversion technique. Initially, the crystallinity and purity of the MgO were examined using X-ray diffraction before the application. Then, morphological characteristics, elemental constituents, mechanical strength, and thermal stability of the resultant membranes were examined using Scanning Electron Microscopy, Energy Diffraction X-ray, tensile loading, and thermogravimetric analysis. The performance results indicated that the membrane sample with the nanoparticles MgO-0.50wt% demonstrated superior mechanical and thermal stability, as well as separation performance. The membrane was able to remove the colorants, COD, suspended solids, total nitrogen, and turbidity by 80.05, 94.10, 98.67, 87.02, and 96.01 %, respectively. Additionally, the sample has the highest flux recovery ratio of 0.929 (or 92.9 %) with a minimal irreversible fouling ratio of 0.071 (or 7.1 %). The regeneration and reusability analysis indicates that at the end of the 4th filtration cycle, the modified membrane (0.50 wt% MgO) exhibited only a 23.22 % reduction in permeability flux. This finding suggests that the nanoparticles MgO 0.50wt% PVDF/PEG sample is a promising technology for POME treatment.

Abstract Image

功能化氧化镁颗粒与聚偏氟乙烯-聚乙二醇纤维相结合,增强了强度和污染物分离效果
棕榈油厂废水(POME)中含有顽固性色素和其他有机污染物(如COD和MLSS),但通常采用的常规修复方法效率低。本研究的重点是开发一种创新的混合膜,用于有效地脱色和分离污染物。该研究涉及使用混合干喷湿旋相转化技术将不同负载(0.0-0.75 wt%)的氧化镁(MgO)纳米颗粒掺入聚偏氟乙烯(PVDF)和聚乙二醇(PEG)中空纤维中。最初,在应用前使用x射线衍射检查了MgO的结晶度和纯度。然后,使用扫描电子显微镜、x射线能量衍射、拉伸载荷和热重分析来检测所得膜的形态特征、元素成分、机械强度和热稳定性。实验结果表明,含MgO-0.50wt%纳米粒子的膜样品具有良好的机械稳定性、热稳定性和分离性能。该膜对着色剂、COD、悬浮物、总氮和浊度的去除率分别为80.05、94.10%、98.67、87.02和96.01%。此外,样品的通量回收率最高为0.929(或92.9%),不可逆结垢率最小为0.071(或7.1%)。再生和可重用性分析表明,在第4个过滤循环结束时,改性膜(0.50 wt% MgO)的渗透通量仅降低23.22%。这一发现表明纳米MgO 0.50wt% PVDF/PEG样品是一种很有前途的POME处理技术。
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