Enhancing recovery of ammonia from swine manure anaerobic digester effluent using gas-permeable membrane technology
Published by Elsevier Ltd.
| Publié dans: | Waste management (New York, N.Y.). - 1999. - 49(2016) vom: 07. März, Seite 372-377 |
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| Auteur principal: | |
| Autres auteurs: | , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2016
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| Accès à la collection: | Waste management (New York, N.Y.) |
| Sujets: | Journal Article Research Support, U.S. Gov't, Non-P.H.S. Ammonia recovery Anaerobic digestion Gas-permeable membranes Nutrient recovery Swine manure Waste management Ammonium Compounds Manure plus... |
| Résumé: | Published by Elsevier Ltd. Gas-permeable membrane technology is useful to recover ammonia from manure. In this study, the technology was enhanced using aeration instead of alkali chemicals to increase pH and the ammonium (NH4(+)) recovery rate. Digested effluents from covered anaerobic swine lagoons containing 1465-2097 mg NH4(+)-N L(-1) were treated using submerged membranes (0.13 cm(2) cm(-3)), low-rate aeration (120 mL air L-manure(-1) min(-1)) and nitrification inhibitor (22 mg L(-1)) to prevent nitrification. The experiment included a control without aeration. The pH of the manure with aeration rose from 8.6 to 9.2 while the manure without aeration decreased from 8.6 to 8.1. With aeration, 97-99% of the NH4(+) was removed in about 5 days of operation with 96-98% recovery efficiency. In contrast, without aeration it took 25 days to treat the NH4(+). Therefore, the recovery of NH4(+) was five times faster with the low-rate aeration treatment. This enhancement could reduce costs by 70% |
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| Description: | Date Completed 13.12.2016 Date Revised 29.07.2017 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2015.12.011 |