Banca de DEFESA: RAYANE DIAS DA SILVA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : RAYANE DIAS DA SILVA
DATE: 26/05/2023
TIME: 14:00
LOCAL: Sala de aula do Larhisa
TITLE:
POTENTIAL FOR PHOSPHORUS RELEASE FROM SEDIMENT DUE TO WIND-INDUCED RESUSPENSION: EXPERIMENTAL STUDY WITH SEMI-ARID TROPICAL RESERVOIR
KEY WORDS:
Eutrophication, internal fertilization, dry periods.
PAGES: 51
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:
High concentrations of nutrients, mainly phosphorus, trigger the eutrophication of lentic water sources. Thus, the reduction of external sources does not reduce eutrophication efficiently, since the nutrients accumulated in the sediment can be released into the water column, depending on the physical and chemical conditions of the system, favoring internal fertilization. Linked to this, the tropical semi-arid region of Brazil presents reduced precipitation and high temperatures, conditions that result in high evaporation and decrease in the water level of reservoirs used for supply, thus favoring resuspension by the wind. This, in turn, intensifies internal fertilization and the eutrophication process. Thus, this work will analyze the influence of wind resuspension on the release of phosphorus from the sediment to the water column, on a laboratory scale, using material from a shallow reservoir in the Brazilian tropical semi-arid region. In this study, resuspension simulations will be performed in microcosms to evaluate the release of phosphorus at the water-sediment interface. Based on the water-soluble reactive phosphorus concentrations of the microcosms, it will be possible to calculate the rate of P release from the sediment to the water column before and after resuspension events.
COMMITTEE MEMBERS:
Presidente - 3216945 - HÉRIKA CAVALCANTE DANTAS DA SILVA
Interna - ***.716.174-** - FABIANA OLIVEIRA DE ARAUJO SILVA - UFRN
Interna - 1764855 - VANESSA BECKER
Externo à Instituição - JOSÉ NEUCIANO PINHEIRO DE OLIVEIRA - IFCE