Preparation and characterization of photocatalytic PSf-TiO2/GO nanohybrid membrane for the degradation of organic contaminants in natural rubber wastewater

Kusworo, Tutuk Djoko; Susanto, Heru; Aryanti, Nita; Rokhati, Nur; Widiasa, I Nyoman; Al-Aziz, Habib; Utomo, Dani Puji; Masithoh, Dewi; Kumoro, Andri Cahyo

doi:10.1016/j.jece.2021.105066

Cited by 49 publications

(11 citation statements)

References 45 publications

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“…Prior to exposing membranes to cleaning solutions, it was noted that the addition of CuO nanoparticles improved membrane hydrophilicity, and this observation was consistent with findings from the literature. 2,37 It was therefore believed that leaching of the nanoparticles (which has been verified through EDS, DLS, and ICP-MS techniques) resulted in the membranes becoming less hydrophilic due to the removal of hydrophilic additives. 22,38,39 Even though the membrane hydrophilicity decreased after nanoparticle leaching, it was noted that the contact angles were still lower than those of the PES membrane without the addition of CuO (85.7 ± 0.6°).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Leaching of CuO Nanoparticles from PES Ultrafiltration Membranes

et al. 2021

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Recent studies have incorporated nanoparticles such as CuO, ZnO, and TiO 2 to improve membrane physical and filtration properties. However, one of the major concerns about membrane modification with nanoparticles is the possible leaching of the nanoparticles leading to further contamination of source waters. Therefore, this study investigated the effects of prolonged exposure of polyethersulfone (PES) membranes incorporated with CuO nanoparticles, to different cleaning solutions. The cleaned membranes were extensively characterized for both material properties and separation performance, which enabled a closer look at particle leaching effect through a prolonged exposure. After 840 h of exposure, the presence of CuO in the cleaning solutions was confirmed using dynamic light scattering (DLS), energy-dispersive X-ray spectroscopy (EDS), and inductively coupled plasma mass spectroscopy (ICP-MS) techniques. Nanoparticle leaching resulted in changes in membrane hydrophobicity, surface roughness, pure water permeability, and salt rejection properties. Through comparison with the bare PES membranes, it was shown that cleaning solutions also degraded the membrane polymer. However, the marked effect was less pronounced compared to combined leaching of nanoparticles and degradation of the polymer noted with PES membranes incorporated with CuO nanoparticles. Therefore, when membranes incorporated with nanoparticles are used, a polishing step may be required to remove potentially leached nanoparticles. Leached nanoparticles may result in secondary pollution and pose a health risk concern to nontarget organisms. This work provides insights into the stability of nanocomposite membranes, and the achieved results can be extrapolated to other nanoparticles such as TiO 2 and ZnO because they possess similar physicochemical behavior.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Leaching of CuO Nanoparticles from PES Ultrafiltration Membranes

et al. 2021

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“…The results of the analysis showed the presence of silanol groups and Si-O silicates and C-H carbon groups. These functional groups are a representation of the composite material [11,29]. The GO/SiO2 composite exhibits a new peak at 1100 cm -1 , characteristic of the Si-O-Si asymmetric vibration.…”

Section: Functional Group Of Compositementioning

confidence: 99%

Graphene Based Membrane Modified Silica Nanoparticles for Seawater Desalination and Wastewater Treatment: Salt Rejection and Dyes

Munasir

Lutfiana

Nuhaa

et al. 2023

IJE

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“…In addition, the GO/TiO 2 -PVDF membranes presented self-cleaning property under UV irradiation as well as two times higher water flux compared with PVDF pristine membrane. Furthermore, GO and TiO 2 nanoparticles were used together by T. D. Kusworo et al [83] as fillers in the fabrication of polysulfone (PSf) membranes (Figure 6). The incorporation of both TiO 2 and GO allowed the obtaining of PMs with a permeate flux, organic and ammonia removals of 13.05 L m −2 h −1 , 60.98% and 91.27%, respectively.…”

Section: Inorganic-polymer Hybrid Materials For Photocatalytic Applic...mentioning

confidence: 99%

Hybrid Organic–Inorganic Membranes for Photocatalytic Water Remediation

et al. 2022

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Mismanagement, pollution and excessive use have depleted the world’s water resources, producing a shortage that in some territories is extreme. In this context, the need for potable water prompts the development of new and more efficient wastewater treatment systems to overcome shortages by recovering and reusing contaminated water. Among the water treatment methods, membrane technology is considered one of the most promising. Besides, photocatalytic degradation has become an attractive and efficient technology for water and wastewater treatment. However, the use of unsupported catalysts has as its main impediment their separation from the water once treated. With this, providing the membranes with this photocatalyzed degradation capacity can improve the application of photocatalysts, since in many cases their application improves their recovery and reuse. This review describes the general photocatalytic processes of the main inorganic nanoparticles used as fillers in hybrid polymeric membranes. In addition, the most recent hybrid organic–inorganic membranes are reviewed. Finally, the membranes formed by metal–organic frameworks that can be considered one of the newest and most versatile developments are described.

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Preparation and characterization of photocatalytic PSf-TiO2/GO nanohybrid membrane for the degradation of organic contaminants in natural rubber wastewater

Cited by 49 publications

References 45 publications

Leaching of CuO Nanoparticles from PES Ultrafiltration Membranes

Leaching of CuO Nanoparticles from PES Ultrafiltration Membranes

Graphene Based Membrane Modified Silica Nanoparticles for Seawater Desalination and Wastewater Treatment: Salt Rejection and Dyes

Hybrid Organic–Inorganic Membranes for Photocatalytic Water Remediation

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