| Full text | |
| Author(s): |
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 Opportunities: | Regular Research Grants |