Corrigendum to: “Correlating the membrane surface energy to the organic fouling and wetting of membrane distillation at elevated temperature” [J. Environ. Chem. Eng. 9, 1 (2021) 104627]

2021 ◽  
Vol 9 (2) ◽  
pp. 105186
Author(s):  
Leow Hui Ting Lyly ◽  
Boon Seng Ooi ◽  
Jit Kang Lim ◽  
C.J.C. Derek ◽  
S.C. Low
Keyword(s):  
Elevated Temperature ◽  
Surface Energy ◽  
Membrane Surface ◽  
Membrane Distillation ◽  
Organic Fouling

The role of membrane surface energy on direct contact membrane distillation performance

Desalination ◽  
2013 ◽  
Vol 323 ◽  
pp. 22-30 ◽  
Author(s):  
Ludovic F. Dumée ◽  
Stephen Gray ◽  
Mikel Duke ◽  
Kallista Sears ◽  
Jürg Schütz ◽  
...  
Keyword(s):  
Surface Energy ◽  
Direct Contact ◽  
Membrane Surface ◽  
Membrane Distillation ◽  
Direct Contact Membrane Distillation

scholarly journals Surface Oxidation of Ethylenechlorotrifluoroethylene (ECTFE) Membrane for the Treatment of Real Produced Water by Membrane Distillation

2018 ◽  
Vol 15 (8) ◽  
pp. 1561 ◽  
Author(s):  
Zahra Anari ◽  
Arijit Sengupta ◽  
Sumith Wickramasinghe
Keyword(s):  
Produced Water ◽  
Membrane Surface ◽  
Surface Oxidation ◽  
Membrane Distillation ◽  
Hydrophobic Membrane ◽  
Water Contact ◽  
Potential Measurement ◽  
Salt Deposition ◽  
Organic Fouling ◽  
Simple Surface

Modification of ethyleneechlorotrifluoroethylene (ECTFE) membranes by simple surface oxidation was reported in the present investigation in order to induce thin hydrophilic layer on hydrophobic membrane surface for the treatment of real produced water (PW). FTIR spectra indicates the appearance of hydrophilic functional groups (–OH and –COOH) on the membrane surface due to modification, while water contact angle, zeta potential measurement, EDX, XPS analysis confirmed the presence of O functionalized hydrophilic groups on the surface. The effect of modification temperature and the time of surface oxidation on the performance of the resulting membranes were studied systematically, which revealed that induction of optimized hydrophilicity can successfully reduce the organic fouling. However, too much hydrophilic surface induces polar/electrostatic interaction resulting salt deposition on membrane surface. A simple on site cleaning procedure was demonstrated to be successful for the treatment PW for at least three consecutive cycles of membrane distillation (MD).

scholarly journals Organic Fouling Impact in a Direct Contact Membrane Distillation System Treating Wastewater: Experimental Observations and Modeling Approach

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 493
Author(s):  
Amine Charfi ◽  
Fida Tibi ◽  
Jeonghwan Kim ◽  
Jin Hur ◽  
Jinwoo Cho
Keyword(s):  
Particle Size ◽  
Membrane Fouling ◽  
Direct Contact ◽  
Feed Solution ◽  
Membrane Distillation ◽  
Mixed Solution ◽  
Permeate Flux ◽  
Direct Contact Membrane Distillation ◽  
Organic Fouling ◽  
Specific Cake Resistance

This study aims to investigate the effect of operational conditions on organic fouling occurring in a direct contact membrane distillation (DCMD) system used to treat wastewater. A mixed solution of sodium alginate (SA) and bovine serum albumin (BSA) was used as a feed solution to simulate polysaccharides and proteins, respectively, assumed as the main organic foulants. The permeate flux was observed at two feed temperatures 35 and 50 °C, as well as three feed solution pH 4, 6, and 8. Higher permeate flux was observed for higher feed temperature, which allows higher vapor pressure. At higher pH, a smaller particle size was detected with lower permeate flux. A mathematical model based on mass balance was developed to simulate permeate flux with time by assuming (i) the cake formation controlled by attachment and detachment of foulant materials and (ii) the increase in specific cake resistance, the function of the cake porosity, as the main mechanisms controlling membrane fouling to investigate the fouling mechanism responsible of permeate flux decline. The model fitted well with the experimental data with R2 superior to 0.9. High specific cake resistance fostered by small particle size would be responsible for the low permeate flux observed at pH 8.

scholarly journals Concentration of FeSO4 spent solutions by membrane distillation

2007 ◽  
Vol 9 (2) ◽  
pp. 15-18 ◽  
Author(s):  
Marek Gryta
Keyword(s):  
Potential Application ◽  
Ph Value ◽  
Membrane Surface ◽  
Membrane Distillation ◽  
Permeate Flux ◽  
Salt Solutions ◽  
Iron Compounds ◽  
Fast Decline ◽  
Waste Salt

Concentration of FeSO4 spent solutions by membrane distillation The possibility of potential application of membrane distillation for the concentration of waste salt solutions has been presented in this work. It was found that the oxidation of iron compounds takes place during the process that was associated with the formation of a layer of oxides on the membrane surface. A fast decline of the permeate flux was observed due to the scaling phenomena. The problem of scaling was eliminated by the acidification with H2SO4 of the feed to the pH value of 2.

Organic fouling behavior in direct contact membrane distillation

Desalination ◽  
2014 ◽  
Vol 347 ◽  
pp. 230-239 ◽  
Author(s):  
Gayathri Naidu ◽  
Sanghyun Jeong ◽  
Sung-Jo Kim ◽  
In S. Kim ◽  
Saravanamuthu Vigneswaran
Keyword(s):  
Direct Contact ◽  
Membrane Distillation ◽  
Direct Contact Membrane Distillation ◽  
Organic Fouling

Transport characterizations of natural organic matter in ion-exchange membrane for water treatment

2002 ◽  
Vol 2 (5-6) ◽  
pp. 445-450 ◽  
Author(s):  
D.H. Kim ◽  
S.-H. Moon ◽  
J. Cho
Keyword(s):  
Organic Matter ◽  
Ionic Strength ◽  
Ion Exchange ◽  
Natural Organic Matter ◽  
Membrane Surface ◽  
Factors Affecting ◽  
Organic Fouling ◽  
Adsorbed Mass ◽  
Pass Through ◽  
Exchange Membrane

A series of adsorption experiments were performed to investigate the factors affecting the transport of natural organic matter (NOM) in an ion-exchange (IX) membrane. In this study, the structure of the NOM was hypothesized to be an important factor in terms of the organic fouling of IX membrane. It was found that the adsorbed mass of hydrophobic NOM constituent on the membrane surface was higher than that of either the hydrophilic or transphilic NOM constituent. NOM adsorption was seriously affected by the apparent charge of the NOM. As the apparent charge increased, NOM adsorption also significantly increased. Moreover, the molecular mass of the hydrophobic NOM acids was too high to enable them to pass through the IX membrane, and this caused an accumulated adsorption of solutes on the membrane surface, i.e. NOM fouling. In addition, both pH and ionic strength affected NOM adsorption on the surface of the IX membrane. Lower NOM adsorption resulted from a lower pH and a higher ionic strength.

Influence of humic acid on the long-term performance of direct contact membrane distillation

2018 ◽  
Vol 30 (1) ◽  
pp. 109-120 ◽  
Author(s):  
Dong-Wan Cho ◽  
Gihoon Kwon ◽  
Jeongmin Han ◽  
Hocheol Song
Keyword(s):  
Humic Acid ◽  
Membrane Fouling ◽  
Coalbed Methane ◽  
Direct Contact ◽  
Membrane Surface ◽  
Membrane Distillation ◽  
Permeate Flux ◽  
Direct Contact Membrane Distillation ◽  
High Level

In this study, the influence of humic acid on the treatment of coalbed methane water by direct contact membrane distillation was examined with bench-scale test unit. During short-term distillation (1000 min), high level of humic acid above 50 ppm resulted in significant decrease in permeate flux, while low level of humic acid (∼2 ppm) had little influence on the flux. For the long-term distillation (5000 min), the flux decline began at 3400 min in the presence of 5 ppm humic acid and 5 mM Ca2+, and decreased to ∼40% of initial flux at 5000 min. The spectroscopic analysis of the membrane used revealed that the surface was covered by hydrophilic layers mainly composed of calcite. The membrane fouling effect of humic acid became more significant in the presence of Ca2+ due to more facile calcite formation on the membrane surface. It was demonstrated that humic acid enhanced CaCO3 deposition on the membrane surfaces, thereby expediting the scaling phenomenon.

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