Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of pH, alkalinity and temperature during air stripping process for ammonia removal from landfill leachate
The objective of this research was to evaluate the air stripping technology for the removal of ammonia from landfill leachates. In this process, pH, temperature, airflow rate and operation time were investigated. Furthermore, the relationship between the leachate alkalinity and the ammonia removal efficiency during the process was studied. The leachate used in the tests was generated in the Gramacho Municipal Solid Waste Landfill (Rio de Janeiro State, Brazil). The best results were obtained with a temperature of 60oC, and they were independent of the pH value for 7 h of operation (the ammonia nitrogen removal was greater than 95%). A strong influence of the leachate alkalinity on the ammonia nitrogen removal was observed; as the alkalinity decreased, the ammonia concentration also decreased because of prior CO2 removal, which increased the pH and consequently favored the NH3 stripping. The air flow rate, in the values evaluated (73, 96 and 120 L air.h−1. L−1 of leachate), did not influence the results.
Evaluation of pH, alkalinity and temperature during air stripping process for ammonia removal from landfill leachate
The objective of this research was to evaluate the air stripping technology for the removal of ammonia from landfill leachates. In this process, pH, temperature, airflow rate and operation time were investigated. Furthermore, the relationship between the leachate alkalinity and the ammonia removal efficiency during the process was studied. The leachate used in the tests was generated in the Gramacho Municipal Solid Waste Landfill (Rio de Janeiro State, Brazil). The best results were obtained with a temperature of 60oC, and they were independent of the pH value for 7 h of operation (the ammonia nitrogen removal was greater than 95%). A strong influence of the leachate alkalinity on the ammonia nitrogen removal was observed; as the alkalinity decreased, the ammonia concentration also decreased because of prior CO2 removal, which increased the pH and consequently favored the NH3 stripping. The air flow rate, in the values evaluated (73, 96 and 120 L air.h−1. L−1 of leachate), did not influence the results.
Evaluation of pH, alkalinity and temperature during air stripping process for ammonia removal from landfill leachate
Campos, Juacyara Carbonelli (Autor:in) / Moura, Denise (Autor:in) / Costa, Ana Paula (Autor:in) / Yokoyama, Lidia (Autor:in) / Araujo, Fabiana Valeria da Fonseca (Autor:in) / Cammarota, Magali Christe (Autor:in) / Cardillo, Luigi (Autor:in)
Journal of Environmental Science and Health, Part A ; 48 ; 1105-1113
15.07.2013
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Removal of Ammonia-Nitrogen Contained in Landfill Leachate by Ammonia Stripping (II)
| British Library Online Contents | 2002
Removal of Ammonia-Nitrogen Contained in Landfill Leachate by Ammonia Stripping(I)
| British Library Online Contents | 2000
Biological Nitrogen Removal From Landfill Leachate
| British Library Conference Proceedings | 1993
Landfill Technology - Ammonia removal from high strength leachate using a sequencing batch reactor
| Online Contents | 1999