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Preparation and characterization of photocatalytic PSf-TiO2/GO nanohybrid membrane for the degradation of organic contaminants in natural rubber wastewater
Journal of Environmental Chemical Engineering ( IF 7.4 ) Pub Date : 2021-01-13 , DOI: 10.1016/j.jece.2021.105066
Tutuk Djoko Kusworo , Heru Susanto , Nita Aryanti , Nur Rokhati , I Nyoman Widiasa , Habib Al-Aziz , Dani Puji Utomo , Dewi Masithoh , Andri Cahyo Kumoro

Although the improvement of photocatalytic property has been reported to be a promising strategy to enhance the anti-fouling of the membranes, the inclusion of a single photocatalytic material into membrane matrix still exhibits low organic foulants degradation capacity. In this study, two photoactive materials, i.e. nano-TiO2 and graphene oxide (GO) are selected as fillers in the fabrication of polysulfone (PSf) membranes. A thorough investigation was devoted to the photocatalytic activity of the membrane for the degradation of organic pollutants in natural rubber wastewater under dark environment and static UV light irradiation. In order to search the best TiO2 and GO composition, early data curation based on membrane permeability and selectivity was carried out. Membrane with TiO2 loading at 1.5 wt% demonstrated its best performance by providing permeate flux of 16.29 L m−2 h−1 with organic removal up to 79.27%. On the other hand, the membrane loaded with 1.0 wt% GO only exhibited permeate flux up to 8.15 L m−2 h−1 with organic removal up to 70.73%. Upon the incorporation of TiO2/GO mixture as filler materials to the PSf membrane, remarkable results were achieved, which consists of permeate flux, organic and ammonia removals of 13.05 L m−2 h−1, 60.98% and 91.27%, respectively. Based on batch photocatalytic activity assessment, the PSf-TiO2/GO membrane showed the fastest photodegradation reaction. The results proved that the incorporation of TiO2 and GO nano particle as photoactive materials to the PSf membrane matrix results in a synergistic effect in improving photocatalytic capacity and stability of the membrane.



中文翻译:

用于降解天然橡胶废水中有机污染物的光催化PSf-TiO 2 / GO纳米杂化膜的制备与表征

尽管据报道光催化性能的改善是增强膜防污性的一种有前途的策略,但是将单一的光催化材料包含到膜基质中仍然显示出低的有机污物降解能力。在这项研究中,两种光敏材料,即纳米TiO 2和氧化石墨烯(GO)被选作填充聚砜(PSf)膜的填料。专门针对膜在黑暗环境和静态紫外线照射下降解天然橡胶废水中有机污染物的光催化活性进行了深入研究。为了寻找最佳的TiO 2和GO组成,进行了基于膜渗透性和选择性的早期数据整理。TiO膜1.5 wt%的2负载量提供了16.29 L m -2 h -1的渗透通量,有机物去除率高达79.27%,显示了其最佳性能。另一方面,负载有1.0重量%GO的膜仅表现出高达8.15Lm -2 h -1的渗透通量,而有机去除率高达70.73%。当TiO 2的掺入2 / GO混合物作为填料材料到聚砜膜中,取得明显成效,它由13.05 L M渗透物通量,有机和氨清除量-2 ħ -1,分别60.98%和91.27%。基于分批光催化活性评估,PSf-TiO 2/ GO膜显示最快的光降解反应。结果证明,将TiO 2和GO纳米颗粒作为光敏材料掺入PSf膜基质中,在提高膜的光催化能力和稳定性方面产生了协同作用。

更新日期:2021-02-09
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