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Effect of embedding MWCNT-g-GO with PVC on the performance of PVC membranes for oily wastewater treatment
Chemical Engineering Communications ( IF 2.5 ) Pub Date : 2019-06-14 , DOI: 10.1080/00986445.2019.1618845
Amna Jalal Sadiq 1 , Kadhum M. Shabeeb 1 , Bassam I. Khalil 1 , Qusay F. Alsalhy 2
Affiliation  

Abstract In this work, polyvinyl chloride/multi-walled carbon nanotube-grafted-graphene oxide (PVC/MWCNT-g-GO) membranes were fabricated by employing a classical phase inversion method for use in the Al-Dura Refinery (Baghdad, Iraq) wastewater treatment. The effects of MWCNT-g-GO contents on the properties and performance of PVC/MWCNT-g-GO membranes (i.e., 0.0599, 0.119, and 0.219 wt.%) were investigated. Scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), contact angle (CA), porosity, and mechanical properties were used to characterize the MWCNT-g-GO and composite membranes. The membrane performance was characterized by liquid permeation flux and chemical oxygen demand (COD) rejection. The SEM and AFM results showed significant effects of MWCNT-g-GO on the structural morphology of the membranes. Also, it was found that the addition of a 0.119 wt.% MWCNT-g-GO membrane greatly improved the CA and porosity, from 74.5° to 13.9° and from 69.3% to 81.4%, respectively. Adding 0.219 wt.% of MWCNT-g-GO to the casting solution produced a major positive impact in the membrane mechanical properties. With 0.119 wt.% of MWCNT-g-GO (e.g., 254 L/m2·h), the membrane fostered increases in the water permeation flux that were 66% greater than when using the neat PVC (e.g., 153 L/m2·h). The COD rejection of the prepared membranes also improved significantly, from 60% for neat PVC to 88.9% after adding 0.119 wt.% of MWCNT-g-GO.

中文翻译:

嵌入 MWCNT-g-GO 与 PVC 对 PVC 膜处理含油废水性能的影响

摘要 在这项工作中,聚氯乙烯/多壁碳纳米管接枝氧化石墨烯 (PVC/MWCNT-g-GO) 膜采用经典的相转化方法制造,用于 Al-Dura 炼油厂(伊拉克巴格达)废水处理。研究了 MWCNT-g-GO 含量对 PVC/MWCNT-g-GO 膜的性质和性能(即 0.0599、0.119 和 0.219 wt.%)的影响。扫描电子显微镜 (SEM)、傅里叶变换红外光谱 (FTIR)、原子力显微镜 (AFM)、X 射线衍射 (XRD)、差示扫描量热法 (DSC)、接触角 (CA)、孔隙率和机械性能用于表征 MWCNT-g-GO 和复合膜。膜性能的特征在于液体渗透通量和化学需氧量 (COD) 截留率。SEM 和 AFM 结果表明 MWCNT-g-GO 对膜的结构形态有显着影响。此外,还发现添加 0.119 wt.% MWCNT-g-GO 膜大大提高了 CA 和孔隙率,分别从 74.5° 到 13.9° 和从 69.3% 到 81.4%。将 0.219 wt.% 的 MWCNT-g-GO 添加到浇铸溶液中对膜的机械性能产生了重大的积极影响。使用 0.119 wt.% 的 MWCNT-g-GO(例如,254 L/m2·h),该膜促进了水渗透通量的增加,比使用纯 PVC(例如,153 L/m2·h)时高 66% H)。所制备膜的 COD 截留率也显着提高,从纯 PVC 的 60% 提高到添加 0.119 wt.% MWCNT-g-GO 后的 88.9%。119 wt.% MWCNT-g-GO 膜极大地提高了 CA 和孔隙率,分别从 74.5° 到 13.9° 和从 69.3% 到 81.4%。将 0.219 wt.% 的 MWCNT-g-GO 添加到浇铸溶液中对膜的机械性能产生了重大的积极影响。使用 0.119 wt.% 的 MWCNT-g-GO(例如,254 L/m2·h),该膜促进了水渗透通量的增加,比使用纯 PVC(例如,153 L/m2·h)时高 66% H)。所制备膜的 COD 截留率也显着提高,从纯 PVC 的 60% 增加到添加 0.119 wt.% MWCNT-g-GO 后的 88.9%。119 wt.% MWCNT-g-GO 膜极大地提高了 CA 和孔隙率,分别从 74.5° 到 13.9° 和从 69.3% 到 81.4%。将 0.219 wt.% 的 MWCNT-g-GO 添加到浇铸溶液中对膜的机械性能产生了重大的积极影响。使用 0.119 wt.% 的 MWCNT-g-GO(例如,254 L/m2·h),该膜促进了水渗透通量的增加,比使用纯 PVC(例如,153 L/m2·h)时高 66% H)。所制备膜的 COD 截留率也显着提高,从纯 PVC 的 60% 增加到添加 0.119 wt.% MWCNT-g-GO 后的 88.9%。MWCNT-g-GO 的百分比(例如,254 L/m2·h),该膜促进了水渗透通量的增加,比使用纯 PVC(例如,153 L/m2·h)时高 66%。所制备膜的 COD 截留率也显着提高,从纯 PVC 的 60% 增加到添加 0.119 wt.% MWCNT-g-GO 后的 88.9%。MWCNT-g-GO 的百分比(例如,254 L/m2·h),该膜促进了水渗透通量的增加,比使用纯 PVC(例如,153 L/m2·h)时高 66%。所制备膜的 COD 截留率也显着提高,从纯 PVC 的 60% 提高到添加 0.119 wt.% MWCNT-g-GO 后的 88.9%。
更新日期:2019-06-14
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