3 documents found, page 1 of 1
The effect of chloride ions and organic matter on the photodegradation of aceta...
Pinto, M. I.; Salgado, Ricardo; Laia, C.A.T.; Cooper, William J.; Sontag, J.; Burrows, Hugh D.; Branco, L.; Vale, C.; Noronha, J. P.The photodegradation kinetics of the neonicotinoid insecticide acetamiprid (ACT) was investigated under different conditions of pH, salinity and dissolved organic matter (DOM). Photodegradation of ACT in saline and freshwaters followed pseudo-first-order kinetics. Varying pH from 5 to 9 did not significantly affect the photodegradation rate constants (kp) of ACT. Addition of chloride ions increased significantl...
Effect of pH and dissolved organic matter on the photochemical fate of acetamiprid
Pinto, M.I.; Salgado, Ricardo; Laia, C. A. T.; Branco, L.; Vale, C.; Cooper, William J.; Burrows, Hugh D.; Noronha, J. P.In this study the effect of pH and dissolved organic matter (DOM) on the photodegradation rate of acetamiprid (ACT) was studied. Observed photodegradation rate constants in the range of 0.0010 – 0.0026 h-1 and 24 – 36 h-1 were obtained using a solar simulator (290-800 nm) and a medium pressure mercury (MP Hg) lamp, respectively. In both experiments an increase in pH from 5 to 9 did not significantly change the ...
Implementação do Método do Potencial de Ressuspensão na rede de distribuição da...
Rebola, N.; Cordeiro, B.; Aprisco, P.; Rodrigues, S.; Menaia, J.; Sereno, J.; Branco, L.; Benoliel, M. J.Os sistemas urbanos de água constituem um sector estratégico de elevada relevância a nível quer económico quer social. É, assim, fundamental que estes sejam geridos de forma racional e eficiente. A Gestão Patrimonial de Infra-estruturas de abastecimento de água e de águas residuais (GPI) é um processo essencial para que, no futuro, se atinjam níveis de serviço adequados, particularmente no que respeita à fiabil...