Preparation and performance evaluation of composite hollow fiber membrane for SO₂ separation

Abstract

Emission of sulfur dioxide (SO2) from coal power plants has to be controlled and minimized to reduce environmental risk. This study aimed to investigate the hollow fiber composite membrane was used for the removal of SO2 from a SO2/CO2/N2 mixed gas. Moreover, for the improvement of SO2 removal efficiency, the polyetherimide (PEI) membrane was coated with poly(vinyl chloride)‐graft‐poly(oxyethylene methacrylate) (PVC‐g‐POEM). The PVC‐g‐POEM/PEI composite hollow fiber membrane was extensively characterized by various techniques including scanning electron microscopy, Fourier transform infrared spectroscopy, and atomic force microscopy. Experiments with permeation of SO2, CO2, N2, and a ternary gas mixture were carried out to observe membrane behavior in response to different operating conditions. As a result, permeance of SO2 was 105–2705 GPU and selectivity of SO2/CO2 was 3.9–175.6. From the mixed gas separation experiment, the maximum SO2 removal efficiency reached up to 84.5%. © 2014 American Institute of Chemical Engineers AIChE J, 60: 2298–2306, 2014

Solvent-Free Preparation of Electrically Conductive Polyetherimide Membranes Using Carbon Nanotubes

“…Pristine polyetherimide (PEI Ultem 1000P) was supplied in powder form by Sabic Innovative Plastics (Pittsfield, USA). Polyetherimide has a high chemical and thermal resistance ( T g = 215 °C), good mechanical properties and is frequently used in membrane applications …”

Preparation of facilitated transport hollow fiber membrane for gas separation using cobalt tetraphenylporphyrin complex as a coating material

“…The membrane process requires low energy consumption and has characteristics of low-cost, compact space, and flexible design compared with other processes (Park et al, 2008). Compared to disk and tubular membranes, hollow fiber membranes possess much larger membrane area per unit volume allowing good gas permeation, and are easy to handle for large scale application and process operation (Sukitpaneenit and Chung, 2014;Kim et al, 2014). Previous literature clearly showed the benefits of using hollow fiber membrane contactors for gas separations (Albo et al, 2010;Albo et al, 2011; M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 the lower the selectivity; further, the upper bound is the goal in order to improve existing membranes (Robeson, 2008).…”

Permeation properties of BTESE–TEOS organosilica membranes and application to O2/SO2 gas separation

“…One vital issue in recent years has been the development of effective approaches for the capture and separation of SO2, which is an origin of air pollution and global warming [1,2]. As an alternative to solvent absorption, membrane separation has been considered an attractive method in systems including sour gas purification and concentration of SO2 [3]. Thus far, polymer membranes have been extensively investigated to remove SO2 and purify exhaust gases, and these have shown remarkable SO2 solubility and selectivity, which favors SO2 permeation [3].…”

“…As an alternative to solvent absorption, membrane separation has been considered an attractive method in systems including sour gas purification and concentration of SO2 [3]. Thus far, polymer membranes have been extensively investigated to remove SO2 and purify exhaust gases, and these have shown remarkable SO2 solubility and selectivity, which favors SO2 permeation [3]. A novel application is the O2/SO2 separation in the Iodine-Sulfur thermochemical water-splitting cycle (IS process) for hydrogen production [4].…”