Journal ArticleDOI
Fabrication of Aromatic Polyimide Membrane to Study the Pervaporative Separation of Phenanthrene/n-tetradecane Mixtures (Model Diesel) and Process Optimization Using Response Surface Methodology
TLDR
In this paper, an aromatic polyimide membrane is fabricated and explored for the separation of a polyaromatic hydrocarbon (phenanthrene) from a model diesel composition (n-tetradecane) via pervaporation.Abstract:
To meet stringent fuel specifications, separation of aromatics from aliphatics is an everyday challenge for a refiner. In the present investigation, an aromatic polyimide membrane is fabricated and explored for the separation of a polyaromatic hydrocarbon (phenanthrene) from a model diesel composition (n-tetradecane) via pervaporation. The pervaporative membrane is prepared by casting a solution of polyamic acid, N,N-dimethylacetamide (DMAc), and phenanthrene using a simple and low-cost procedure. Scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), and swelling in feed solution of the synthesized membrane have been conducted for its characterization. The membrane allows preferential permeation of phenanthrene. The influence of different physico-chemical parameters, on permeation flux and enrichment factor for n-tetradecane/phenanthrene mixtures, has been studied. Statistical software Design Expert 7.1.4 is used to derive the regression equation, which describes the effect o...read more
Citations
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The Design and Analysis of Experiments
TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
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Membrane materials in the pervaporation separation of aromatic/aliphatic hydrocarbon mixtures-A review
TL;DR: In this paper, the authors provide an overview on the advances in studying membrane materials for the pervaporation separation of aromatic/aliphatic mixtures over the past decade and highlight their nature and separation performance.
Journal ArticleDOI
Optimization of electro-kinetic process for remediation of soil contaminated with phenanthrene using response surface methodology
Sudabeh Pourfadakari,Sahand Jorfi,Aliakbar Roudbari,Allahbakhsh Javid,Seyedeh Solmaz Talebi,Seid Kamal Ghadiri,Nader Yousefi +6 more
TL;DR: 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), and results 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%.
Application of modified Maxwell-Stefan equation for separation of aqueous phenol by pervaporation
Ujjal Ghosh,T.Y. Ling +1 more
TL;DR: In this paper, a modified Maxwell-Stefan model was proposed for the separation of phenol from water using a polyurethane membrane by pervaporation by applying the Modified Maxwell-S tephen model.
References
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Journal Article
The Design and Analysis of Experiments
TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
Journal ArticleDOI
Cancer risk assessment, indicators, and guidelines for polycyclic aromatic hydrocarbons in the ambient air.
Carl-Elis Bostrom,Per Gerde,Annika Hanberg,Bengt Jernström,Christer Johansson,Titus Kyrklund,Agneta Rannug,Margareta Törnqvist,Katarina Victorin,Roger Westerholm +9 more
TL;DR: The carcinogenicity of polycyclic aromatic hydrocarbons (PAHs) is associated with the complexity of the molecule, and with metabolic activation to reactive diol epoxide intermediates and their subsequent covalent binding to critical targets in DNA.
Journal ArticleDOI
PAH source fingerprints for coke ovens, diesel and, gasoline engines, highway tunnels, and wood combustion emissions
TL;DR: In this article, a modified high-volume sampling method (PS-1 sampler) was employed to collect airborne polyaromatic hydrocarbons (PAHs) in both the particulate and gas phases.
Journal ArticleDOI
Polymeric membrane pervaporation
P. Shao,Robert Y.M. Huang +1 more
TL;DR: In this article, an analytical overview of the potential of pervaporation for separating liquid mixtures in terms of the solubility parameter and the kinetic parameter of solvents is provided.
Journal ArticleDOI
Polyimides membranes for pervaporation and biofuels separation
TL;DR: In this paper, the authors provide a comprehensive overview on the current state-of-the-art technologies for polyimides membranes in pervaporation, from polymer synthesis, modification to membrane formation.