Banca de DEFESA: LARISSA CAROLINE SARAIVA FERREIRA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : LARISSA CAROLINE SARAIVA FERREIRA
DATA : 15/07/2016
HORA: 09:00
LOCAL: 4I6
TÍTULO:
CONCENTRATION OF SEWAGE NUTRIENT BY NANFILTRATION AND INVERSE OSMOSIS MEMBRANES
PALAVRAS-CHAVES:
Concentrated management. Concentrate recirculating. Liquid fertilizer
PÁGINAS: 36
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Sanitária
RESUMO:
Membranes concentrates, obtained from sewage treatment, have potential for use as fertilizer due its concentration of nutrients, as well as contribute to the management of these concentrates. This concentrates may cause serious impacts when disposed improperly in the environment. Agricultural uses the nutrients, mainly Nitrogen and Phosphorus, which are necessary for plant nutrition. In these terms, nanofiltration and reverse osmosis membranes have been used to concentrate the sewage nutrients treated biologically through recirculation mode to the feed tank, in order to obtain a concentrate rich in nutrient that can be comparted to a commercial liquid mineral fertilizer. Experiments were performed with and without the concentrate recirculation and collected permeate and concentrated aliquots for physicochemical characterization and flow measurements over time. The results showed that the concentration of the nutrients in membranes concentrates were statistically lower than the minimum standards set for a liquid fertilizer that can be marketed for soil application. Furthermore, the concentration process negatively influenced the flow and quality of the final permeated, although commercial liquid fertilizers are not considered for soil applications, according to the current Instruction Normative, concentrated in membranes can be used as fertilizer for hydroponics or solution for ready use, since is such cases the minimum concentrations requirements depend on the manufacturer.
MEMBROS DA BANCA:
Presidente - 346736 - CICERO ONOFRE DE ANDRADE NETO
Interno - 376.950.452-68 - ANDRE LUIS CALADO ARAUJO - IFRN
Externo à Instituição - JULIANA DELGADO TINOCO - CAERN
Externo à Instituição - MARCO ANTÔNIO CALAZANS DUARTE - IFRN