Effect and optimization parameters of phenol removal in emulsion liquid membrane process via fractional-factorial design

Rosly, Muhammad Bukhari; Jusoh, Norela; Othman, Norasikin; Rahman, Hasimah Abdul; Noah, Norul Fatiha Mohamed; Sulaiman, Raja Norimie Raja

doi:10.1016/j.cherd.2019.03.007

Cited by 48 publications

(10 citation statements)

References 33 publications

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“…According to the literature, circular contour plot mostly suggests no significant interaction between variables [36,37]. The ellipse contour plot, on the other hand, suggested that there are significant interactions between variables [36,37]. The combined effects (interactions between factors) of the independent variables on the analytical response are presented in Figure 7.…”

Section: Response Surface Methodology (Rsm) Based On Central Composite Design (Ccd)mentioning

confidence: 88%

“…The interactive effects of the independent variables were envisioned through the surface contour plot. According to the literature, circular contour plot mostly suggests no significant interaction between variables [36,37]. The ellipse contour plot, on the other hand, suggested that there are significant interactions between variables [36,37].…”

Section: Response Surface Methodology (Rsm) Based On Central Composite Design (Ccd)mentioning

confidence: 97%

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Vortex-Assisted Dispersive Molecularly Imprinted Polymer-Based Solid Phase Extraction of Acetaminophen from Water Samples Prior to HPLC-DAD Determination

2021

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In the present study, acetaminophen (ACT) molecularly imprinted polymer (ACT-MIP) were successfully synthesized via surface imprinting polymerization. The structural and morphological properties of ACT-MIP were characterized using various analytical techniques. ACT-MIP were used as an adsorbent in a vortex-assisted dispersive molecularly imprinted solid-phase micro-extraction (VA-d-μ-MISPE), coupled with a high-performance liquid chromatography–diode array detector (HPLC-DAD) method for the determination of ACT in water samples. Influential parameters such as the mass of adsorbent, vortex speed, extraction time, desorption volume, and desorption time were optimized using a multivariate approach. Under optimum conditions, the maximum binding capacities of ACT-MIP and NIP (non-imprinted polymers) were 191 mg/g and 71.5 mg/g, respectively. The linearity was attained across concentrations ranging from 0.630 to 500 µg/L, with a coefficient of determination of 0.9959. For ACT-MIP, the limit of detection (LOD) and limit of quantification (LOQ), enhancement factor, and precision of the method were 0.19 ng/L, 0.63 ng/L, 79, and <5%, respectively. The method was applied in the analysis of spiked water samples, and satisfactory percentage recoveries in the range of 95.3–99.8% were obtained.

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Section: Response Surface Methodology (Rsm) Based On Central Composite Design (Ccd)mentioning

confidence: 88%

Section: Response Surface Methodology (Rsm) Based On Central Composite Design (Ccd)mentioning

confidence: 97%

Vortex-Assisted Dispersive Molecularly Imprinted Polymer-Based Solid Phase Extraction of Acetaminophen from Water Samples Prior to HPLC-DAD Determination

2021

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“…These advantages include less energy requirement, high separation selectivity, high mass transfer rate and less residence time [7]. To date, ELM technique has been used for the separation of many materials such as phenol [8], amino acids [9] and metals such as silver [10], gold [11], molybdenum [12], arsenic [13], platinum [14], rhodium [15], cadmium [16], cobalt [17], copper [18,19], uranium [20], palladium [21], chromium [22], zinc [23], zirconium [24] neodymium and gadolinium [25].…”

Section: Introductionmentioning

confidence: 99%

Investigation of experimental results and D-optimal design of hafnium ion extraction from aqueous system using emulsion liquid membrane technique

2020

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Hafnium metal is used in a wide range of industries such as microprocessor manufacturing, nuclear reactors and special alloys due to its physical, chemical and radiation properties. Emulsion liquid membrane (ELM) is an effective and efficient alternative for heavy metal separation compared to conventional methods due to high selectivity, energy-saving, high mass transfer and low operating capital. In this study, Cyanex 572 as a carrier, Span 85 as a surfactant, hydrochloric acid as an internal phase and kerosene as a diluent were used. In the first part of the study, the stability of the emulsions was investigated. The most stable emulsions were obtained by adding PIB polymer (3% w/v), Span 85 surfactant (3% w/v) and stirring for 15 min. In the second part, the separation of hafnium metal ions from aqueous solutions was investigated using ELM technique. The highest separation was obtained at 4% (v/v) as carrier concentration, 4% (w/v) as surfactant concentration, the membrane-to-feed volume ratio of 20/100 and W/O/W emulsion stirring rate and time equal to 400 rpm and 5 min, respectively. Moreover, to optimize the factors influencing the tests, the design of experiment (DOE) was performed using D-optimal method via Design Expert 10 software. Based on DOE results, the maximum extraction (> 99%) was achieved when the carrier concentration, the surfactant concentration, W/O/W emulsion stirring time, W/O/W emulsion stirring rate and emulsion volume/feed phase ratio were 4.49% v/v, 3.90% w/v, 11.49 min, 310.54 rpm and 2:1, respectively.

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“…Every design comes with its added value and disadvantages depending on experimental needs. Many studies have shown the ability of FFD in minimizing the number of runs over one-factor-at-a-time (OFAT) techniques [ 1 , 5 ]. For the same amount of accuracy, FFD would take less time compared to OFAT.…”

Section: Introductionmentioning

confidence: 99%

“…This paper introduces the combined usage of FFD and RSM in experimental design for multiple variables, and it is suspected to influence the outcome and estimate the optimum design condition. The validity of the predicted point from a three-dimensional (3D) plot can be tested experimentally, where the error margin of less than 5% is desired [ 5 ]. Applying either of these methods in DOE could generate a better prediction, minimize mass production cost, and increase process efficiency [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Flux model development and synthesis optimization for an enhanced GO embedded nanocomposite membrane through FFD and RSM approach

Wahab

Rahman

Samah

2020

Heliyon

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A two-level full factorial design was used to analyze several factors involved in PSF–GO–Pebax thin film nanocomposite membranes development. Permeate flux was chosen as a single response for four possible factors: Pebax selective layer concentration, amount of GO load to Pebax selective layer, Pebax–GO selective layer thickness, and amount of GO load to PSF substrate. The study is aimed at factors interaction and contribution towards the highest permeation flux via FFD and RSM approach. R 2 obtained from the ANOVA is 0.9937 with Pebax concentration as the highest contributing factor. Pebax concentration–amount of GO load to PSF substrate is the only interaction contributing to the highest flux. A regression analysis concluded the study with model development and an optimized condition for the membrane design.

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Effect and optimization parameters of phenol removal in emulsion liquid membrane process via fractional-factorial design

Cited by 48 publications

References 33 publications

Vortex-Assisted Dispersive Molecularly Imprinted Polymer-Based Solid Phase Extraction of Acetaminophen from Water Samples Prior to HPLC-DAD Determination

Vortex-Assisted Dispersive Molecularly Imprinted Polymer-Based Solid Phase Extraction of Acetaminophen from Water Samples Prior to HPLC-DAD Determination

Investigation of experimental results and D-optimal design of hafnium ion extraction from aqueous system using emulsion liquid membrane technique

Flux model development and synthesis optimization for an enhanced GO embedded nanocomposite membrane through FFD and RSM approach

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