In the membrane distillation bioreactor (MDBR) process, flux increases with increasing feed temperature, but presence of microorganisms limits temperature. Also, accumulation cells and other substances on surface can affect efficiency MDBR. this study, hospital wastewater was treated by thermophilic activated sludge MDBR, initial 7.87 L‧m−2·h−1 stable 3.88 L‧m−2·h−1. The particle size, zeta pot...

The development of a reactive distillation process for the production of n-butyl acetate by transesterification of methyl acetate with n-butanol is presented. Thermodynamic aspects of the quaternary system n-butyl acetate – n-butanol – methyl acetate – methanol are discussed and UNIQUAC interaction parameters derived using the Dortmund Data Bank (DDB) are given. The reaction kinetics of the het...

Since membrane separations, such as vapor permeation (VP) or pervaporation (PV), are not limited by vapor-liquid equilibrium, their coupling with distillation can exert a synergistic effect, overcome the thermodynamic limits of distillation, and improve energy efficiency, especially suitable for separation azeotropic mixtures that otherwise requires special processes. Therefore, there is an inc...

Various approaches to solvent recovery have been studied for the manufacturing process of celecoxib, the active ingredient in Celebrex. A design case study has been performed by Rowan University with Pfizer through a green engineering partnership program. The manufacturing operation at Barceloneta, Puerto Rico was evaluated and several green engineering alternatives for the purification and rec...

The innovative design and synthesis of nanofiber based hydro-philic/phobic membranes with a thin hydro-phobic nanofiber layer on the top and a thin hydrophilic nanofiber layer on the bottom of the conventional casted micro-porous layer which opens up a solution for membrane pore wetting and improves the pure water flux in membrane distillation.