Membrane reactor

The studies of a conversion of KCl with H2SO4 into KHSO4 were performed using a reactor associated with direct contact membrane distillation (DCMD). Polypropylene (PP) capillary membranes were used in the experiments. The feed comprised of solutions containing 1 mol of KCl with various initial conce

Mathematical models have been developed to calculate the mass transfer rates through catalytic membrane layer and through the concentration boundary layer by means of explicit, closed expressions for first-order and zeroorder bioreactions as well as even in the case of the nonlinear Michaelis–Menten

Concentration and/or space-dependent diffusive and convective mass transport, through flat sheet, anisotropic membrane layer or membrane bioreactor through dense or porous membrane, were investigated. A quasi-analytical solution is presented in order to estimate the concentration distribution in the

Cyclohexane is recognized to be one of the promising hydrogen storage materials but it is pointed out that its freezing point (ca. 6.5 C) is too high to use in the cold district. In this study, therefore, the mixtures of cyclohexane with methylcyclohexane as a hybrid chemical hydride were proposed

In generally livestock wastewater contains high concentration of organic matter, nitrogen and phosphorus. Therefore, it is difficult to maintain good effluent quality by the conventional activated sludge process. The organic matter oxidation microorganism has a high yield value than the nitrificatio

A hybrid process, consisting of ozonation and membrane filtration, followed by activated carbon filtration, was studied in demonstration scale for the drinking and service water production from surface water in Thailand. The main focus of this study centred on the evaluation of the entire process, e

A lipase-immobilized biphasic membrane reactor was applied for the optical resolution of racemic 2-hydroxy octanoic acid. Lipase from Candida rugosa or Pseudomonas cepacia was used as a biocatalyst, and three kinds of capillary membranes were employed as immobilization supports. The (S)-isomer of ra

This work addresses the enzymatic hydrolysis of beechwood xylan on a membrane reactor with tangential flow over an ultrafiltration membrane. The hydrolysis was carried out on concentration mode, with circulating substrate, and results were compared with those obtained for batch assays. The oligosacc

A La0.7Sr0.3Ga0.6Fe0.4O3-δ membrane with perovskite structure is fabricated by a conventional solid-state reaction. As the oxygen permeation flux of the La0.7Sr0.3Ga0.6Fe0.4O3-δ membrane was lower than commercial gas separation membranes, we coated a La0.6Sr0.4CoO3-δ layer to enhance the oxygen perm

Dimerisation of isobutene is of increasing interest to substitute oxygenated products such as MTBE or the like as fuel additives. Catalysts applied in commercial alkylation plants, e.g., hydrofluoric and sulfuric acid may be replaced by less harmful solid catalysts, for example by solid heteropolyac