Digested residue as a fertilizer after the mesophilic process of anaerobic digestion

Ammonia air stripping from pig slurry: influence of previous mesophilic anaerobic digestion process

The solution to environmental problems associated with livestock wastes requires a broad integrated approach. The recovery of valuable products as nitrogen, has become a need in geographical areas with high animal farming density. Ammonia air stripping, combined with absorption, can remove and recover ammonia from liquid wastes. The objective of the present paper is to study the pH effect on am...

Pig slurry concentration by vacuum evaporation: influence of previous mesophilic anaerobic digestion process.

Water can be removed from pig slurry by evaporation, through the application of wasted heat from a power plant or from other processes. Apart from obtaining a concentrate with an obviously higher nutrient concentration than the original slurry, another objective of water removal is to obtain water as condensate, which could be reused. The objective of this work was to study the vacuum evaporati...

Microbial community dynamics in the two-stage anaerobic digestion process of two-phase olive mill residue

Anaerobic Digestion of Pulping Wastewater Using Up-flow Anaerobic Sludge Blanket (UASB) Reactor at Mesophilic Condition

Corresponding Author: Randa M. Osman Chemical Engineering and Pilot Plant Department, National Research Centre, Cairo, Egypt Email: [email protected] Abstract: The waste considered for this study was the effluent of the pulping process produced during the manufacture of pulp and paper in the Rakta integrated pulp and paper mill in Alexandria. The pulping process in Rakta mill is condu...

THE ANAEROBIC DIGESTION PROCESS IN A FLUIDIZED BED REACTOR The anaerobic digestion is an efficient process to treat effluents

In this article, a Takagi-Sugeno fuzzy observer for the anaerobic digestion process in a fluidized bed reactor is proposed. First, a general explanation of this bioprocess is introduced. A model of the system discretized in the space by the orthogonal collocation method is presented. This model is analyzed locally to prove properties of stability and observability. Then, the design of the fuzzy...