Publicação
Valorização agronómica/energética de lamas de ETAR
| dc.contributor.advisor | Ribeiro, Henrique Manuel Filipe | |
| dc.contributor.advisor | Duarte, Elizabeth Fernandes de Almeida | |
| dc.contributor.author | Bancessi, Aducabe Mendonça | |
| dc.date.accessioned | 2009-03-11T16:22:38Z | |
| dc.date.available | 2009-03-11T16:22:38Z | |
| dc.date.issued | 2009 | |
| dc.description | Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia | en |
| dc.description.abstract | This work aims to evaluate the use of 4 different sewage sludges as a fertilizer: mixed sewage sludge (primary+secondary sludge), dehydrated mixed sewage sludge; anaerobically digested sewage sludge and anaerobically digested sewage sludge treated with quicklime (CaO). Two aerobic incubations were performed with mixtures of sludge and the top layer of a Haplic Pdzol, at a rate equivalent to 10 ton dry matter ha- 1. During 140 days, the CO2-C emissions and the mineral N in soil were periodically measured. At the end of the incubation period, several soil properties were evaluated. The higher CO2-C emission was found in the mixed sludges while the anaerobic sludge presented the lower value. The treatment of anaerobic sludge with lime led to an increase of CO2-C emission and nitrogen mineralization from the sludge, indicating that lime treatment promoted more favorable conditions to sludge mineralization. At the end of the incubation period, sludge-amended soil had higher pH, more evident on the lime-treated sludge, and higher amounts of available nutrients, namely, nitrogen, phosphorus, potassium and calcium. The balance between applied carbon and C-CO2 emission, proved that sewage sludge increases carbon accumulation in soil. | en |
| dc.identifier.uri | http://hdl.handle.net/10400.5/620 | |
| dc.language.iso | por | en |
| dc.subject | sewage sludge | en |
| dc.subject | mineralization | en |
| dc.subject | nitrogen | en |
| dc.subject | carbon | en |
| dc.subject | lama de ETAR | en |
| dc.subject | mineralização | en |
| dc.subject | azoto | en |
| dc.subject | carbono | en |
| dc.title | Valorização agronómica/energética de lamas de ETAR | en |
| dc.type | master thesis | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | en |
| rcaap.type | masterThesis | en |