Membrane bioreactor

To extend the service life and to improve the quality of degreasing solutions from surface refining processes in the metal working industry a process based on a membrane bioreactor (MBR) with submerged multi-channel flat sheet ceramic membranes was developed. This MBR-based regeneration process comb

Reverse osmosis (RO) is currently one of the most prevalent methods used for seawater desalination. During the past four decades, the research and development has reduced the energy consumption from about 20 to 4 kWh/m3, while improvements in membrane science has led to a 20-fold increase in the spe

In the food and beverage industries, spent process water streams containing very different levels of contamination are combined and routed to the mixing and equalizing tank where problems in biological wastewater treatment occur. It could be shown that the treatment of the partial streams for differ

Electrodialysis (ED) is an efficient process for the treatment of drinking water with high nitrate concentration. However it achieves only a transfer of pollution by producing concentrated brines. This study demonstrated the feasibility of ED brine denitrification in a membrane bioreactor (MBR). The

Cellulose solution, as a model waste water was hydrolysed in a special, jacketed membrane bioreactor by Celluclast enzyme preparation to produce glucose. Stainless steel microfiltration tube membrane covered by a hairy pelt cloth was applied, which provided a surface for simultaneous adsorption of t

Fermentations, utilizing a membrane bioreactor (MBR) can be advantageous as cells are retained in the vessel while soluble products are continuously withdrawn. It can be operated at high cell density, which allows increased productivity. Since hydraulic and solids residence times are independent of

The study of microbial interactions often requires fastidious and sometimes expensive analytical methods. A reactor specifically designed to carry out studies of interacting populations was developed. Its basic principle consists in keeping both strains of the mixed culture separate by the way of a

Economical feasibility of xylitol production by microorganisms depends directly on the efficiency of conversion and productivity. A potential alternative to ensure this objective is continuous bioconversion. Xylitol production and separation methodology by a biotechnological route using the benefits

Long-term experiments with a membrane bioreactor to remove dimethyl sulfide (Me2S) from waste air are reported for the first time. The membrane bioreactor contained a polydimethylsiloxane/Zirfon composite membrane and was inoculated with Hyphomicrobium VS, a methylotrophic micro-organism. The optim

Nanofiltration (NF) membrane technology has made rapid progress and then extended its application fields. It has obtained in particular the good results in the removal of organic and inorganic matters or microbes in the water and wastewater. To investigate the applicability and characteristics of NF