Removal and Recovery of Ammonia from Liquid Manure Using Gas-Permeable Membranes
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منابع مشابه
Recovery of ammonia and phosphate minerals from swine wastewater using gas-permeable membranes.
Gas-permeable membrane technology is useful to recover ammonia (NH3) from liquid manures. In this study, phosphorus (P) recovery via MgCl2 precipitation was enhanced by combining it with NH3 recovery through gas-permeable membranes. Anaerobically digested swine wastewater containing approximately 2300 mg NH4+-N L-1 and 450 mg P L-1 was treated using submerged membranes plus low-rate aeration to...
متن کاملRecovery of ammonia from swine manure using gas-permeable membranes: effect of waste strength and pH.
Nitrogen recovery from swine manure was investigated using gas-permeable membranes. The process involved a continuous recirculation of an acidic solution through a gas-permeable membrane submerged in manure. Ammonia from manure was concentrated in the acidic solution increasing its pH, while pH decreased in manure. In the first set of experiments, nitrogen recovery efficiency was evaluated with...
متن کاملRecovery of ammonia from swine manure using gas-permeable membranes: effect of aeration.
The gas-permeable membrane process can recover ammonia from manure, reducing pollution whilst converting ammonia into an ammonium salt fertilizer. The process involves manure pH control to increase ammonium (NH4(+)) recovery rate that is normally carried out using an alkali. In this study a new strategy to avoid the use of alkali was tested applying low-rate aeration and nitrification inhibitio...
متن کاملRecovery of ammonia nitrogen in livestock and industrial wastes using gas permeable membranes
New waste management methods are needed that can protect the environment and allow manure management to switch back to a recycling view of manure handling. We investigated the use of gas-permeable membranes as components of new processes to capture and recover the ammonia in the liquid manures or in the air of poultry houses and other livestock installations. The basic process includes the pass...
متن کاملCharacterizing the Performance of Gas-Permeable Membranes as an Ammonia Recovery Strategy from Anaerobically Digested Dairy Manure
Capturing ammonia from anaerobically digested manure could simultaneously decrease the adverse effects of ammonia inhibition on biogas production, reduce reactive nitrogen (N) loss to the environment, and produce mineral N fertilizer as a by-product. In this study, gas permeable membranes (GPM) were used to capture ammonia from dairy manure and digestate by the diffusion of gaseous ammonia acro...
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