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Ammonia nitrogen desorption from sanitary landfill leachate in filling towers

Authors :
Valderi D. Leite
Aldre J. M. Barros
Wilton S. Lopes
José T. de Sousa
Source :
Engenharia Agrícola, Vol 34, Iss 3, Pp 542-553 (2014)
Publication Year :
2014
Publisher :
Sociedade Brasileira de Engenharia Agrícola, 2014.

Abstract

Sanitary landfill leachates present high concentrations of carbonaceous and nitrogenous materials. The crucial point is that carbonaceous materials are of difficult biodegradation, what compromises the performance of biological treatment processes, while nitrogenous materials, such as ammonia nitrogen, probably preclude the use of biological treatments. Therefore, the aim of this work was to study the desorption process of ammonia nitrogen from sanitary landfill leachate in filling towers. Desorption was carried out in filling towers of 35 L capacity. The leachate was collected from a sanitary landfill located in João Pessoa, Paraíba State, Brazil. Desorption efficiency for the pH values adopted in four treatments was 93% minimum and 95.5% maximum, with aeration mean time ranging from 3 to 6 hours. The limiting factors of ammonia nitrogen desorption from sanitary landfill leachates in filling towers are associated with the use of alkalizer species for pH correction, and electricity costs for aeration.

Details

Language :
English, Spanish; Castilian, Portuguese
ISSN :
01006916
Volume :
34
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Engenharia Agrícola
Publication Type :
Academic Journal
Accession number :
edsdoj.07947b3e050e421a8609a592703cbfeb
Document Type :
article
Full Text :
https://doi.org/10.1590/S0100-69162014000300017