The Influence of Alkalization and Temperature on Ammonia Recovery from Cow Manure and the Chemical Properties of the Effluents
| Autor: | Mohamed Al-Sewailem, Ahmed H. El-Naggar, Ahmed Mohammed-Nour |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Ammonia stripping
Animal manure Potassium Geography Planning and Development lcsh:TJ807-830 lcsh:Renewable energy sources chemistry.chemical_element 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Boric acid Ammonia chemistry.chemical_compound Ammonia flux Waste management Manure free ammonia lcsh:Environmental sciences 0105 earth and related environmental sciences lcsh:GE1-350 Renewable Energy Sustainability and the Environment lcsh:Environmental effects of industries and plants Sulfuric acid 04 agricultural and veterinary sciences Ammonia volatilization from urea Manure lcsh:TD194-195 chemistry 040103 agronomy & agriculture Organic fertilizer 0401 agriculture forestry and fisheries Cow dung Nuclear chemistry |
| Zdroj: | Sustainability, Vol 11, Iss 8, p 2441 (2019) Sustainability Volume 11 Issue 8 |
| ISSN: | 2071-1050 |
| Popis: | Manure is a substantial source of ammonia volatilization into the atmosphere before and after soil application. The purpose of the study was to investigate the effects of temperature and alkalization treatments on the release of ammonia and ammonia recovery (AR) from cow manure and to characterize the chemical properties of the resultant effluents. In a closed glass reactor, 100 g of fresh cow manure was mixed with 100 mL of deionized water and the mixture was treated with various volume of KOH to increase the manure pH to 7, 9, and 12. Ammonia was distilled from the mixture at temperatures of 75, 85, 95, and 100 ° C for a maximum of 5 h. Ammonia was received as diluted boric and sulfuric acids. Results indicated that the highest ammonia recovery was 86.3% and 90.2%, which were achieved at a pH of 12 and temperatures of 100 and 95 ° C, respectively. The recovered ammonia in boric acid was higher than in sulfuric acid, except at a pH of 12 and temperatures of 95 and 100 ° C. The effluents, after ammonia was removed, showed that the variation in pH ranged between 6.30 and 9.38. The electrical conductivity ranged between 4.5 and 9. (dS m&minus 1) and total potassium ranged between 9.4 and 57.2 mg kg&minus 1. |
| Databáze: | OpenAIRE |
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