Removal of free active chlorine from synthetic wastewater by MEUF process using polyethersulfone/titania nanocomposite membrane

Rahmati, Navid Oftadeh; Chenar, Mahdi Pourafshari; Namaghi, Hamed Azizi

doi:10.1016/j.seppur.2017.03.030

Cited by 32 publications

(9 citation statements)

References 27 publications

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“…Due to variable conditions such as fouling, chemical exposure, disintegration, cleaning etc. membrane performance decrease with the passage of time so characterization in this case using specific techniques gives valuable information about membrane structure and its topography in order to get insight about performance loss or affected membrane structure [206][207][208][209][210][211]. Similarly, modified membranes (modification with nano-materials) are also characterized in order to get information about modified surface layer for membrane performance.…”

Section: Characterization Techniquesmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

172

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During last few decades, membrane technology has emerged as an efficient technique over conventional methods due to its high removal capacity, ease in operation and cost effectiveness for wastewater treatment and production of clean water. Membrane based separations are commonly based on polymeric membranes because of their higher flexibility, easily pore forming mechanism, low cost and smaller space for installation as compared to inorganic membranes. Commonly employed membrane fabrication phase inversion method has been shortly reviewed in this article. Major limitation of membrane based separations is fouling and polymeric membranes being hydrophobic in nature are more prone to fouling. Fouling is a deposition of various colloidal particles, macromolecules (polysaccharides, proteins), salts etc. on membrane surface and within pores thus impedes membrane performance, reduces flux and results in high cost. Modification of polymeric membranes due to its tailoring ability with nanomaterials such as metal based and carbon based results in polymeric nano-composite membranes with high antifouling characteristics. Nanomaterials impart high selectivity, permeability, hydrophilicity, thermal stability, mechanical strength, and antibacterial properties to polymeric membranes via blending, coating etc. modification methods. Characterization techniques has also discussed in later section for studying morphological properties and performance of polymer nano-composite membranes. Graphical Abstract

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Section: Characterization Techniquesmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

172

View full text Add to dashboard Cite

show abstract

“…Hypochloride rejection decreased with increasing pH and feed chlorine concentration, and increased by increasing TMP and TiO 2 content of the membranes. R value for FAC was found to be around 75 between pHs 2 and 4 [42].…”

Section: Gzara Andmentioning

confidence: 90%

Nanofiltration Mediated by Surfactant Micelles: Micellar- Enhanced Ultrafiltration

Taşcıoğlu¹

2018

Nanofiltration

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Surfactant micelle-assisted removal of ions and organic solutes from aqueous media by micellar enhanced ultrafiltration (MEUF), which is a membrane separation technique, is discussed in detail. Following general information about micellar structure, counterion binding, substrate solubilization, and medium effect functions of micelles which enable separation of cationic or anionic ions and organic molecules from aqueous media by MEUF are explained in a comprehensive manner. Some of the recent studies on removing pollutants from wastewater effluents of industrial plants by MEUF, and their results have been summarized to inform about the factors affecting the removal efficiency of this technique. Methods for recovery of surfactant and contaminants from retentate or permeate solutions are also given. Selective separation of metal ions of the same charge from multicomponent solutions is another topic of this chapter. In this context, the last part of the chapter provides an overview on every aspects of ligand modified MEUF (LM-MEUF) process. This report comprises a comprehensive review of MEUF and LM-MEUF studies in the literature.

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“…Therefore, micellar enhanced ultrafiltration has been proposed, which is created by combining ultrafiltration and a surfactant. Micellar enhanced ultrafiltration has high flux and high selectivity, leading to low energy consumption, high removal efficiency and less space, and is, therefore, most suitable for waters with low heavy metal concentrations (Huang et al 2017;Rahmati et al 2017).…”

Section: Methods Of Removing Hazardous Elements From Neutral Mining E...mentioning

confidence: 99%

Possibilities of remediation of neutral mine drainage - Removal and recovery of potentially hazardous elements

Prepilková¹,

Poništ²,

Schwarz³

et al. 2022

Soil & Water Res.

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Mine water is one of the factors threatening the environment. The aim of the review article is to discuss and critically evaluate individual strategies for the remediation of neutral mine water. A critical evaluation is an essential tool to determine an appropriate remediation strategy. A wetland system is the preferred method of metal removal. However, the disadvantage is that it takes up more space compared to other methods and has a lower metal removal efficiency compared to active metal removal methods. When creating a suitable strategy, it is also necessary to assess the conditions of the mining site, which partially or completely prevent the use of the selected remediation strategy. The benefit of this review article is the processing of suitable combinations of treatment methods for the removal of potentially hazardous elements and their subsequent recovery. Future research in the field needs to focus on the analysis of the negative aspects of the environment that may disrupt or support the implementation of the selected method of remediation.

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Removal of free active chlorine from synthetic wastewater by MEUF process using polyethersulfone/titania nanocomposite membrane

Cited by 32 publications

References 27 publications

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Nanofiltration Mediated by Surfactant Micelles: Micellar- Enhanced Ultrafiltration

Possibilities of remediation of neutral mine drainage - Removal and recovery of potentially hazardous elements

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