Sustainable Membrane Technology Research Group (SMTRG), Faculty of Petroleum, Gas and Petrochemical Engineering(FPGPE), Persian Gulf University (PGU), P.O. Box 75169-13798, Bushehr, Iran.
Sustainable Membrane Technology Research Group (SMTRG), Faculty of Petroleum, Gas and Petrochemical Engineering(FPGPE), Persian Gulf University (PGU), P.O. Box 75169-13798, Bushehr, Iran.
Chemosphere. 2023 Mar;318:138001. doi: 10.1016/j.chemosphere.2023.138001. Epub 2023 Jan 30.
Graphene has attracted a significant amount of attention because to its excellent mechanical, electrical, thermal, and optical characteristics. In this work, a membrane bioreactor with hollow fibre PAN/GO nanocomposite was studied for the treatment of Persian Gulf shrimp pond wastewater. Dunaliella salina microalgae have been used for better treatment and the formation of sludge mass in a shorter period of treatment in the MBR system. Additionally, GO nanoparticles were used in order to improve the hydrophilicity of the membranes. Various tests, such as Pure water permeate (PWP), X-ray diffraction spectroscopy (XRD), Atomic force microscopy (AFM), Dynamic light scattering (DLS), Contact angle (CA), Scanning electronic microscopy (SEM), Fourier transform infrared substances (FTIR) were used to characterize the synthesized membranes. To evaluate the treated wastewater, several factors were evaluated, including: TP, TN, TSS, NTU, BOD, COD, EC. The contact angle was reduced by the inclusion of GO nanoparticles from 53.8° for PAN-0 to 45.4° for PAN-3. The results of FTIR analysis confirmed the synthesis of GO and showed the formation of different deposits as fouling on the surface of the prepared membranes after MBR process. Also, the removal percentage of COD and BOD was over 90% for membranes with graphene oxide nanoparticles. The turbidity for all fabricated membranes were removed ∼98%. Also, very little fouling occurred in the membranes constructed with GO membranes and the maximum concentration of GO let to maximum performance regarding to the high potential of fouling control. In addition, the growth of Microalgae Dunaliella salina with shrimp wastewater was observed successfully. In conclusion, the finding of this work not only proposed a promising solution for controlling fouling in an MBR but also resulted in a benefit product, i.e. microalgae Dunaliella salina.
石墨烯因其优异的机械、电气、热和光学特性而引起了广泛关注。在这项工作中，研究了一种具有中空纤维 PAN/GO 纳米复合材料的膜生物反应器，用于处理波斯湾虾塘废水。杜氏盐藻微藻已被用于更好地处理和在较短的处理时间内在 MBR 系统中形成污泥质量。此外，还使用了 GO 纳米粒子来提高膜的亲水性。使用了各种测试，如纯水渗透（PWP）、X 射线衍射光谱（XRD）、原子力显微镜（AFM）、动态光散射（DLS）、接触角（CA）、扫描电子显微镜（SEM）、傅里叶变换红外物质（FTIR）来表征合成的膜。为了评估处理后的废水，评估了几个因素，包括：TP、TN、TSS、NTU、BOD、COD、EC。通过包含 GO 纳米粒子，接触角从 PAN-0 的 53.8°降低到 PAN-3 的 45.4°。FTIR 分析的结果证实了 GO 的合成，并显示了在 MBR 过程后，在制备的膜表面形成了不同的沉积物作为污垢。此外，具有氧化石墨烯纳米粒子的膜对 COD 和 BOD 的去除率超过 90%。所有制备的膜的浊度去除率约为 98%。此外，GO 膜构建的膜中几乎没有发生结垢，GO 的最大浓度使其具有最高的性能，因为其具有控制结垢的高潜力。此外，成功观察到用虾废水培养杜氏盐藻微藻的生长。总之，这项工作的发现不仅提出了一种控制 MBR 中结垢的有前途的解决方案，而且还产生了一种有益的产品，即杜氏盐藻微藻。
