Fabrication of Aromatic Polyimide Membrane to Study the Pervaporative Separation of Phenanthrene/n-tetradecane Mixtures (Model Diesel) and Process Optimization Using Response Surface Methodology

Roychowdhury, Sayan; Mitra, Debasis

doi:10.1080/00986445.2016.1235563

Cited by 4 publications

(7 citation statements)

References 37 publications

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“…After 453 K probably diffusion and subsequent permeation of smaller molecules occur in preference to PAHs due to membrane swelling thereby reducing J i . Such type of behavior was reported in our previous study and for pervaporative separation of aqueous phenol .…”

Section: Resultssupporting

confidence: 86%

“…With increase in feed PAHs concentration at any particular temperature gradual increase in J i was observed. PAHs present in the feed interact with the polyaromatic present in the membrane as is evident from our previous study . This type of interaction probably enhances with increase in PAHs concentration of the feed.…”

Section: Resultssupporting

confidence: 60%

“…The details of membrane preparation method adopted for the fabrication of the aromatic polyamide membrane was cited in a recent publication .…”

Section: Methodsmentioning

confidence: 99%

“…The evidence of chemical interaction between the PAHs in the feed with the phenanthrene present in the membrane was established. The results and discussion are published elsewhere in detail .…”

Section: Methodsmentioning

confidence: 99%

“…From our previous studies , permeability of components, present in prepared model diesel (phenanthrene in n ‐tetradecane) through fabricated API membrane reveals successful separation of desired PAH via pervaporation (PV). In addition, the sorption and subsequent permeation explain the interaction of fabricated membrane component (containing phenanthrene) with feed mixture quite predominant at an elevated temperature, higher feed concentration, and lower downstream pressure.…”

Section: Introductionmentioning

confidence: 99%

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Separation of polyaromatic hydrocarbons from model diesel composition via pervaporation using a fabricated aromatic polyimide membrane and process optimization

Roychowdhury

Mitra

2018

Env Prog and Sustain Energy

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Removal of polyaromatics from diesel is important to meet automobile emission specifications. According to Worldwide Fuel Charter, the maximum allowable concentration of polyaromatic hydrocarbons (PAHs) in automotive diesel should be less than 2% vol (max). An aromatic polyimide membrane was fabricated by solution casting a mixture of polyamic acid, N,N‐dimethylacetamide and phenanthrene. This membrane was utilized for the separation of a multicomponent mixture consisting of acenaphthene and 2‐methyl naphthalene (PAHs) in toluene and n‐tetradecane, chosen as model diesel composition via pervaporation. The prepared membrane was characterized by mechanical strength testing, SEM and TGA‐DTA study. The influence of varying downstream pressure, feed composition, and operating temperature on the pervaporative separation performance in terms of combined permeation flux of the PAHs was investigated. A central composite experimental design along with response surface methodology was conducted to optimize these process factors for maximizing the combined permeation flux. The maximum value of combined permeation flux obtained was 0.071 kg m−2 h−1. Hence, it can be concluded that the novel membrane fabricated using a simple and relatively inexpensive method has good potentiality for pervaporative removal of PAHs from the chosen system. © 2018 American Institute of Chemical Engineers Environ Prog, 37: 1901–1907, 2018

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Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 60%

“…The details of membrane preparation method adopted for the fabrication of the aromatic polyamide membrane was cited in a recent publication .…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Separation of polyaromatic hydrocarbons from model diesel composition via pervaporation using a fabricated aromatic polyimide membrane and process optimization

Roychowdhury

Mitra

2018

Env Prog and Sustain Energy

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Optimization of electro-kinetic process for remediation of soil contaminated with phenanthrene using response surface methodology

Pourfadakari

Jorfi

Roudbari

et al. 2020

Environ Sci Pollut Res

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The objective of this work was to investigate the modification of soil contaminated with phenanthrene (PHE) by electro-kinetic remediation (EKR) process using response surface methodology (RSM). The soil sample was obtained from the subgrades (0-30 cm) of an area close to Shahroud City, Northeast of Iran. The effect of variables such as initial pH, voltage, electrolyte concentration, and reaction time on PHE removal was studied. Based on the results obtained from the central composite design (CCD) experiment, the highest and lowest amount of PHE removal was 97 and 20%, respectively. In this study, the variables A, B, C, AB, AC, and C 2 with a p value < 0.05 were significant model terms and the parameter of the lack of fit was not significant (p value = 0.0745). Findings indicated that the "predicted R-squared" of 0.9670 was in reasonable agreement with the "adj R-squared" of 0.9857 and the plot of residual followed a normal distribution and approximately linear. Also, the kinetic rates of the removal PHE by the EKR process best fitted with a first-order kinetic model (R 2 : 0.926). Results of the investigation of the effective variables showed that in values of pH 3, time of 168 h, voltage of 3 V, and electrolyte concentration of 4 mg/L, the removal efficiency of PHE reached 96.6%.

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Membrane materials in the pervaporation separation of aromatic/aliphatic hydrocarbon mixtures — A review

Liu

Wang

Zhao

et al. 2018

Chinese Journal of Chemical Engineering

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Fabrication of Aromatic Polyimide Membrane to Study the Pervaporative Separation of Phenanthrene/n-tetradecane Mixtures (Model Diesel) and Process Optimization Using Response Surface Methodology

Cited by 4 publications

References 37 publications

Separation of polyaromatic hydrocarbons from model diesel composition via pervaporation using a fabricated aromatic polyimide membrane and process optimization

Separation of polyaromatic hydrocarbons from model diesel composition via pervaporation using a fabricated aromatic polyimide membrane and process optimization

Optimization of electro-kinetic process for remediation of soil contaminated with phenanthrene using response surface methodology

Membrane materials in the pervaporation separation of aromatic/aliphatic hydrocarbon mixtures — A review

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