Development of high flux thin-film composite membrane for water desalination: a statistical study using response surface methodology

Gohil, Jaydevsinh M.; Suresh, Akkihebbal K.

doi:10.1080/19443994.2013.809025

Cited by 10 publications

(3 citation statements)

References 17 publications

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“…Within this domain, most desalination membranes have been fabricated using thin-film composites (TFCs), which contain a polyamide (PA) cross-linked active layer on top of a porous polymeric support via interfacial polymerization (IP) method at the interface between two-monomer trimesoyl chloride (TMC) and m -phenylenediamine (MPD). − Conventional TFC membranes still include weaknesses, such as the trade-off phenomenon between selectivity and permeability, low chlorine stability, and fouling, that have been the main barrier to achieving maximum desalination performance. Therefore, the trade-off limitation must be solved through innovative materials and design strategies. − …”

Section: Introductionmentioning

confidence: 99%

Thin-Film Nanocomposite Membrane Incorporated with Porous Zn-Based Metal–Organic Frameworks: Toward Enhancement of Desalination Performance and Chlorine Resistance

Shukla

Alam

Alhoshan

et al. 2021

ACS Appl. Mater. Interfaces

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Metal–organic framework (MOF) materials have received extensive attention for the design of advanced thin-film nanocomposite (TFN) membranes with excellent permselectivity. However, the relationship between the unique physicochemical properties and performance of engineered MOF-based membranes has yet to be extensively investigated. In this work, we investigate the incorporation of porous zinc-based MOFs (Zn-MOFs) into a polyamide active layer for the fabrication of TFN membranes on porous poly(phenylsulfone) (PPSU) support layers through an interfacial polymerization approach. The actual effects of varying the amount of Zn-MOF added as a nanofiller on the physicochemical properties and desalination performance of TFN membranes are studied. The presence and layout of Zn-MOFs on the top layer of the membranes were confirmed by X-ray photoelectron spectroscopy, scanning electron microscopy, and ζ potential analysis. The characterization results revealed that Zn-MOFs strongly bind with polyamide and significantly change the membrane chemistry and morphology. The results indicate that all four studied TFN membranes with incorporated Zn-MOFs enhanced the water permeability while retaining high salt rejection compared to a thin-film composite membrane. Moreover, the highest-performing membrane (50 mg/L Zn-MOF added nanofiller) not only exhibited a water permeability of 2.46 ± 0.12 LMH/bar but also maintained selectivity to reject NaCl (>90%) and Na2SO4 (>95%), similar to benchmark values. Furthermore, the membranes showed outstanding water stability throughout 72 h filtration and chlorine resistance after a 264 h chlorine-soaking test because of the better compatibility between the polyamide and Zn-MOF nanofiller. Therefore, the developed TFN membrane has potential to solve trade-off difficulties between permeability and selectivity. Our findings indicate that porous Zn-MOFs play a significant role in the development of a TFN membrane with high desalination performance and chlorine resistance.

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Section: Introductionmentioning

confidence: 99%

Thin-Film Nanocomposite Membrane Incorporated with Porous Zn-Based Metal–Organic Frameworks: Toward Enhancement of Desalination Performance and Chlorine Resistance

Shukla

Alam

Alhoshan

et al. 2021

ACS Appl. Mater. Interfaces

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“…The salt passage values for our membranes ranged from 0.99% to 7.4% and thus the best membranes were comparable to the commercial BW30 membrane (Dow Chemicals, USA), for, which the salt passage was 2.6% as measured under the same conditions in our laboratory. While the water flux for our membranes, which was in the range of 25.7 × 10 −7 -111.6 × 10 −7 m 3 m −2 s −1 , was a little lower (under the same conditions, BW30 gave a water flux of about 136.11 × 10 −7 m 3 m −2 s −1 ); we have shown in a recent work that the water flux can be improved without affecting the salt rejection by the use of controlled amounts of additives such as dimethyl sulfoxide [21]. The characteristics of the membrane such as thickness, contact angle, and zeta potential were also comparable to those of BW30, while the roughness of the present membranes was higher.…”

Section: Experimental Designmentioning

confidence: 79%

A statistical study of the effect of preparation conditions on the structure and performance of thin film composite reverse osmosis membranes

Gohil

Suresh

2014

Desalination and Water Treatment

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A B S T R A C TThis work describes a statistical study of the membrane formation reaction between 1,3-phenylene diamine (MPDA) and 1,3,5-benzenetricarbonyl trichloride (TMC) on polysulfone support. The membrane performance has been characterized in terms of water flux, salt passage, and intrinsic salt permeability, and the membranes were also characterized with respect to several structural and morphological factors. The ranges within which the concentration of each monomer was varied were chosen as being relevant to industrial practice, and this is borne out by the fact that the performance of the membranes formed is within the range of practical interest. This analysis reveals that the concentrations of MPDA and TMC significantly influenced the intrinsic salt permeability, water flux, and the characteristic properties of the active polyamide layer. Polynomial models have been derived for the performance parameters using response surface methodology, and allow an identification of monomer concentrations for optimal performance of the membrane.

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“…The main objective of RSM is to optimize the output response based on the input variables investigated [16]. Many previous studies have used RSM to optimize the preparation conditions of PA-TFC membranes [17][18][19]. Currently, the novel advanced methods used for multi-objective optimization studies depend on a genetic algorithm, wherein RSM is used as a solver for this algorithm.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Optimize the Fabrication Conditions of Thin Film Composite RO Membranes Using Multi-Objective Genetic Algorithm II

et al. 2020

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This work focuses on developing a novel method to optimize the fabrication conditions of polyamide (PA) thin film composite (TFC) membranes using the multi-objective genetic algorithm II (MOGA-II) method. We used different fabrication conditions for formation of polyamide layer—trimesoyl chloride (TMC) concentration, reaction time (t), and curing temperature (Tc)—at different levels, and designed the experiment using the factorial design method. Three functions (polynomial, neural network, and radial basis) were used to generate the response surface model (RSM). The results showed that the radial basis predicted good results (R2 = 1) and was selected to generate the RSM that was used as the solver for MOGA-II. The experimental results indicate that TMC concentration and t have the highest influence on water flux, while NaCl rejection is mainly affected by the TMC concentration, t, and Tc. Moreover, the TMC concentration controls the density of the PA, whereas t confers the PA layer thickness. In the optimization run, MOGA-II was used to determine optimal parametric conditions for maximizing water flux and NaCl rejection with constraints on the maximum acceptable levels of Na2SO4, MgSO4, and MgCl2 rejections. The optimized solutions were obtained for longer t, higher Tc, and different TMC concentration levels.

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Development of high flux thin-film composite membrane for water desalination: a statistical study using response surface methodology

Cited by 10 publications

References 17 publications

Thin-Film Nanocomposite Membrane Incorporated with Porous Zn-Based Metal–Organic Frameworks: Toward Enhancement of Desalination Performance and Chlorine Resistance

Thin-Film Nanocomposite Membrane Incorporated with Porous Zn-Based Metal–Organic Frameworks: Toward Enhancement of Desalination Performance and Chlorine Resistance

A statistical study of the effect of preparation conditions on the structure and performance of thin film composite reverse osmosis membranes

A Novel Approach to Optimize the Fabrication Conditions of Thin Film Composite RO Membranes Using Multi-Objective Genetic Algorithm II

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