Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure
Autor: | Berta Riaño, Maria Cruz García-González, Matias B. Vanotti, Beatriz Molinuevo-Salces |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
0208 environmental biotechnology
gas-permeable membranes 02 engineering and technology 010501 environmental sciences engineering.material 01 natural sciences lcsh:TD1-1066 Membrane technology law.invention Ammonia chemistry.chemical_compound recovery Animal science law Ammonium lcsh:Environmental technology. Sanitary engineering Distillation Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences General Environmental Science Renewable Energy Sustainability and the Environment swine manure Manure 020801 environmental engineering Dilution chemistry Wastewater engineering Fertilizer total ammonia nitrogen |
Zdroj: | Environments Volume 6 Issue 3 Environments, Vol 6, Iss 3, p 32 (2019) |
ISSN: | 2076-3298 |
DOI: | 10.3390/environments6030032 |
Popis: | Gas-permeable membrane technology is a new strategy to minimize ammonia losses from manure, reducing pollution and recovering N in the form of an ammonium salt fertilizer. In this work, a new operational configuration to recover N using the gas-permeable membrane technology from swine manure was tested in a semi-continuous mode. It treated swine manure with a total ammonia nitrogen (TAN) concentration of 3451 mg L&minus 1. The system was operated with low aeration rate (to raise pH), and with hydraulic retention times (HRT) of seven days (Period I) and five days (Period  II) that provided total ammonia nitrogen loading rate (ALR) treatments of 491 and 696 mg TAN per L of reactor per day, respectively. Results showed a uniform TAN recovery rate of 27 g per m2 of membrane surface per day regardless of the ALR applied and the manure TAN concentration in the reactor. TAN removal reached 79% for Period I and 56% for Period II, with 90% of recovery by the membrane in both periods. Water capture in the acidic solution was also uniform during the experimental period. An increase in temperature of 3 ° C of the acidic solution relative to the wastewater reduced 34% the osmotic distillation and water dilution of the product. These results suggested that the gas-permeable membrane technology operating in a semi-continuous mode has a great potential for TAN recovery from manure. |
Databáze: | OpenAIRE |
Externí odkaz: |