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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ammonia removal from landfill leachate by air stripping and absorption

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Author(s):
Ferraz, Fernanda M. [1] ; Povinelli, Jurandyr [1] ; Vieira, Eny Maria [2]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Escola Engn Sao Carlos, Dept Hydraul & Sanitat, Sao Carlos, SP - Brazil
[2] Univ Sao Paulo, Sao Carlos Chem Inst, Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ENVIRONMENTAL TECHNOLOGY; v. 34, n. 15, p. 2317-2326, AUG 1 2013.
Web of Science Citations: 32
Abstract

An old landfill leachate was pre-treated in a pilot-scale aerated packed tower operated in batch mode for total ammoniacal nitrogen (TAN) removal. The stripped ammonia was recovered with a 0.4molL(-1) H2SO4 solution, deionized water and tap water. Ca(OH)(2) (95% purity) or commercial hydrated lime was added to the raw leachate to adjust its pH to 11, causing removal of colour (82%) and heavy metals (70-90% for Zn, Fe and Mn). The 0.4molL(-1) H2SO4 solution was able to neutralize 80% of the stripped ammonia removed from 12L of leachate. The effectiveness of the neutralization of ammonia with deionized water was 75%. Treating 100L of leachate, the air stripping tower removed 88% of TAN after 72h of aeration, and 87% of the stripped ammonia was recovered in two 31L pilot-scale absorption units filled with 20L of tap water. (AU)

FAPESP's process: 10/51955-2 - Tractability study of sanitary landfill leachates: emphasis on combined treatment with sanitary sewage in aerobic systems
Grantee:Jurandyr Povinelli
Support type: Regular Research Grants