Waste-organics supported treatment of nitrogen-rich digester supernatant

Recovery of nitrogen and phosphorous as struvite from swine waste biogas digester effluent.

OBJECTIVE To investigate the feasibility of nitrogen and phosphorus recovery from swine waste biogas digester effluent and the effects of pH and NH4+: Mg2+: PO4(3-) molar ratio on its precipitation. METHODS Precipitation experiments with swine waste biogas digester effluent were conducted at pH 7.5, 8.0, 8.5, and 9.0 together with NH4+: Mg2+: PO4(3-) molar ratios 1: 0.2: 0.08, 1: 1: 1, and 1:...

Simulation of organics and nitrogen removal from wastewater inconstructed wetland

Modelling wastewater treatment processes is an effective tool for prediction and analysis of treatment system performance. In this study, removal of organics and nitrogen compounds of municipal wastewater is simulated in a constructed wetland based on system dynamic approach using Stella software. In the developed model, organics are represented by BOD and nitrogen compounds including nitrate, ...

Treatment of Trace Organics in Membrane Concentrate

Removal of pesticides from membrane system concentrates is studied. Our aim was to obtain a concentrate composition similar to its source by removing mainly the pesticides and natur al organic matter by 75 to 85%. Conventional processes used for surface water treatment; i.e. oxidation by ozone, adsorption and clarification, were tested for this purpose. Several experiments, using batch systems ...

Energetic Nitrogen-rich Salts

Abstract: Energetic salts as a unique class of energetic materials have recently been investigated widely, since they possess advantages over their atomically similar nonionic analogues – they tend to exhibit lower vapor pressures, higher densities and better thermal stabilities. Furthermore, these salts are readily improved upon by the appropriate combination of different cations and anions. O...

Nitrogen-rich indium nitride