Effect of interactions between ammonium and organic fouling simulated by sodium alginate on performance of direct contact membrane distillation

Tibi, Fida; Charfi, A.; Cho, Jinwoo; Kim, Jeong‐Hwan

doi:10.1016/j.seppur.2021.119551

Cited by 13 publications

(3 citation statements)

References 51 publications

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“…This could be attributed to the significant presence of effluent organic matter (EfOM) (Kumar et al 2020). Organic fouling is primarily caused by EfOM owing to physical sorption and electrostatic interactions with the hydrophobic MD membrane (Tibi et al 2021). According to our literature survey, recent studies have been conducted on organic fouling using MD technology (Cho et al 2018;Charfi et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…With regards to the EfOM, it has been acknowledged that the main organic foulants found in TE include humic substances (HS) and polysaccharides (Zheng et al 2019;Charfi et al 2021). The significance of HS is because of its sorption onto the hydrophobic MD membrane surface (Naidu et al 2015), whereas polysaccharides, such as alginates, promote a dense fouling layer due to their high compressibility and deformability (Tibi et al 2021). Previously, Cho et al (2018) observed the formation of a fouling layer caused by HA deposition, which reduced the direct contact MD (DCMD) flux by 40%.…”

Section: Introductionmentioning

confidence: 99%

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Membrane distillation of wastewater: comparison of model and real organics

Habib,

Phuong Do,

Asif

et al. 2024

Water Science &Amp; Technology

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Fouling behaviour in membrane distillation (MD) processes plays a crucial role in determining their widespread acceptability. Most studies have primarily focused on model organic foulants, such as humic acid (HA) and sodium alginate (SA). This study investigates the fouling of a polytetrafluoroethylene membrane in a direct contact MD (DCMD) using model organics (i.e., HA and SA) and real wastewater. The results indicated that the flux decline (5–60%) was only observed during the initial phase of the operation with model organic foulants. In contrast, real wastewater caused a gradual decline in flux throughout the experiment in both the concentrate (40%) and continuous (90%) modes. The study also found significant differences in the fouling layer morphology, composition, and hydrophobicity between the model organic foulants and real wastewater. Fourier transform infrared spectroscopy findings demonstrated that the fouling layer formed by real wastewater varied significantly from model organics, which primarily comprised of protein-like and polysaccharide-like functional groups. Finally, liquid chromatography–organic carbon detection revealed that the fouling layer of the MD membrane with real wastewater was composed of 40.7% hydrophobic and 59.3% hydrophilic organics. This study suggests that model organics may not accurately reflect real wastewater fouling.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Membrane distillation of wastewater: comparison of model and real organics

Habib,

Phuong Do,

Asif

et al. 2024

Water Science &Amp; Technology

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show abstract

“…Fouling is generally caused by the deposition and growth of organic, inorganic, colloidal, and microbial foulants [ 11 , 12 ] and the adhesion of microbial cells on the membrane surface [ 13 ]. Biofouling commonly originates from organic matter from microbial cells.…”

Section: Introductionmentioning

confidence: 99%

Effects of Benzalkonium Chloride Contents on Structures, Properties, and Ultrafiltration Performances of Chitosan-Based Nanocomposite Membranes

et al. 2022

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The effects of benzalkonium chloride (BKC) contents on the structure, properties, and ultrafiltration performance of chitosan-based nanocomposite membranes containing poly(ethylene glycol) and multi-walled carbon nanotube (chitosan/BKC/PEG/CNT) were examined. The membranes were prepared by a mixing solution method and phase inversion before being characterized with microscopic techniques, tensile tests, thermogravimetric analysis, water contact angle, and porosity measurements. The performance of the nanocomposite membranes in regard to permeability (flux) and permselectivity (rejection) was examined. The results show that the incorporation of BKC produced nanocomposite membranes with smaller pore structures and improved physico-chemical properties, such as an increase in porosity and surface roughness (Ra = 45.15 to 145.35 nm and Rq = 53.69 to 167.44 nm), an enhancement in the elongation at break from 45 to 109%, and an enhancement in the mechanical strength from 31.2 to 45.8 MPa. In contrast, a decrease in the membrane hydrophilicity (water contact angle increased from 56.3 to 82.8°) and a decrease in the average substructure pore size from 32.64 to 10.08 nm were observed. The membrane rejection performances toward Bovine Serum Albumin (BSA) increased with the BKC composition in both dead-end and cross-flow filtration processes. The chitosan/BKC/PEG/CNT nanocomposite membranes have great potential in wastewater treatments for minimizing biofouling without reducing the water purification performance.

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In situ real-time monitoring technologies for fouling detection in membrane processes

Jeong¹,

Kim²

2023

Current Developments in Biotechnology and Bioengineering

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Effect of interactions between ammonium and organic fouling simulated by sodium alginate on performance of direct contact membrane distillation

Cited by 13 publications

References 51 publications

Membrane distillation of wastewater: comparison of model and real organics

Membrane distillation of wastewater: comparison of model and real organics

Effects of Benzalkonium Chloride Contents on Structures, Properties, and Ultrafiltration Performances of Chitosan-Based Nanocomposite Membranes

In situ real-time monitoring technologies for fouling detection in membrane processes

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