The aim of the current study was to investigate the feasibility of membrane contactors for continuous ammonia (NH₃-N) removal in an anaerobic digestion process and to counteract ammonia inhibition. Two laboratory anaerobic digesters were fed slaughterhouse wastes with ammonium (NH₄⁺) concentrations ranging from 6 to 7.4 g/L. One reactor was used as reference reactor without any ammonia removal....

Ammonia separation from water by a membrane contactor was simulated on transient state and compared with experimental data. Aqueous low concentrated solution of ammonium with high pH has been pumped inside a hydrophobic hollow fiber (lumen), sulfuric acid solution in the outside part and the feeding solutions are in closed loop configuration. In order to simulate the separation process, the equ...

In the actual environmental and economic context, there is an increased interest in the microbial production at a large industrial scale of 3-hydroxypropionic acid (3-HP). Among its various applications, this compound is primarily sought for its direct use as building block mainly for the synthesis of bio-based polymers and the production of commercially valuable chemicals. Although 3-HP is cur...

A rotating biological contactor (RBC) is a type of attached-growth wastewater treatment system and widely used technology. It employs series discs to support microbial growth promote the removal pollutants from wastewater. RBC recognized for its simplicity design, high reliability, low energy consumption. has been in various applications, small-scale decentralized systems large municipal plants...

The disposal of domestic wastewater without any treatment into the drainage systems is considered a source of pollution threatening the population. Industrial waste water discharge to the environment is one of the environmental problems which must be controlled. Current mainstream technologies for treatment of domestic wastewater such as activated sludge and tertiary nutrient removal are too co...

Abstract This paper presents a model-based assessment of natural gas sweetening process combining high-pressure membrane contactor with conventional amine regeneration. The analysis builds on mathematical model the developed in companion paper, which is capable quantitative predictions CO2 and hydrocarbon absorption solvent evaporative losses to treated gas. predictive capability plant-wide tes...

This work focused on the CO2 capture by absorption into amines based absorbents. Aqueous mixtures containing different types of amines (MEA, MDEA, AMP, PZ and PZEA) are experimentally compared in a special gas-liquid contactor (a cables-bundle contactor) with respect to the CO2 removal performances at 25°C and atmospheric pressure. This absorption process was also simulated with the use of publ...