a microporous bisphenol a diglycidyl ether (dgeba) epoxified-polyethersulfone (pes) blend membrane (epes membrane) was prepared through dry-wet phase inversion. this study attempts to correlate the changes in membrane physical and chemical properties when the epes membranes were exposed to different durations of dry-phase inversion, towards the separation efficiency of carcinogen chromium (vi)....

A high-precision method is presented for the extraction of the fetal electrocardiogram from multi-channel potential recordings on the mother's skin. First the problem is appropriately formulated in terms of blind source separation, where the sources can have a multi-dimensional nature. As a summary of preceding work it is shown how the fetal electrocardiogram can be reconstructed by means of se...

 A model is developed for separation of multicomponent gas mixtures in a countercurrent hollow fiber membrane module. While the model’s solution in countercurrent module usually involves in a time consuming iterative procedure, a proper initial guess is proposed for beginning the calculation and a simple procedure is introduced for correcting the guesses, hereby the CPU time is decreased ess...

Growing evidence indicates that the CO2 emissions from the combustion of fossil fuels are contributing to global climate change. One indispensable approach to controlling CO2 emissions to the atmosphere is carbon capture, utilization and sequestration (CCUS) from large point sources, such as coal power plants. Membrane technology has emerged as an important separation technology for CO2 capture...

Hydrophobicity properties of graphite and green synthesized graphene (gsG) from exfoliated graphite/GO towards polymer membrane characteristic and properties at different weight percentage concentrations (1, 2, 3, 4 and 5 wt. %) were investigated. PSf/graphite and PSf/gsG membranes were characterized in term of hydrophobicity, surface bonding, surface roughness and porosity. FTIR peaks revealed...

Since the industrial revolution era, Earth was suffering from serious air pollution. Millions of people are now indoor pollution related diseases, especially in industrialized countries such as China. One method to improve quality is by oxygen enhancement. Membrane technology has been a key research over past decades due its low energy usage, minimum chemical consumption well small setting up l...

Separation of monosaccharides and monovalent salts is important in the biorefinery food industry. Nanofiltration (NF) technology promising for this purpose but its poor selectivity still needs to be addressed. In work, separation by NF improved regulating surface charge pore size distribution polyamide membranes. The carboxyl groups on membrane are selectively activated N-(3-Dimethylaminopropyl...

Recently, pervaporation separation processes have gained much attention in the separation of azeotropic and close boiling point organic-organic mixtures due to its high separation efficiency, economy, safety, and energy saving potentials. In this work, the effects of experimental factors such as feed composition and operating temperature on the performance of a commercial poly vinyl alcohol mem...

the EPA's peer and administrative reviews and has been approved for publication as an EPA document. Mention of trade names of commercial products does not constitute an endorsement or recommendation for use. iii Foreword The Superfund Innovative Technology Evaluation (SITE) Program was authorized by the Superfund Amendments and Reauthorization Act of 1986 (SARA). The Program is administered by ...