Navegando por Autor "Souza, Mauro Henrique Batalha de"

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Algae/bacteria consortium in high rate ponds : influence of solar radiation on the phytoplankton community.
(2015) Assemany, Paula Peixoto; Calijuri, Maria Lúcia; Couto, Eduardo de Aguiar do; Souza, Mauro Henrique Batalha de; Silva, Nirlane Cristiane; Santiago, Aníbal da Fonseca; Castro, Jackeline de Siqueira
Using multivariate statistical tools, the composition of the phytoplankton community was related to the characteristics of the domestic sewage used as culture medium in three high rate ponds (HRPs) submitted to different solar radiation levels. A total of 32 genera of phytoplankton were identified in the ponds; the class Chlorophyceae was the most abundant during the entire sampling period, with a larger number of individuals of the genus Desmodesmus in the summer and fall, and of the genus Chlorella in the winter and spring. The lowest occurrence of phytoplankton was observed in the fall, with behavior similar to the evolution of solar radiation throughout the year. Blocking over 30% of the solar radiation allowed for less variability of the phytoplankton community and favored the growth of biomass with higher density of individuals, as well as higher concentrations of chlorophyll-a and dissolved oxygen. On the other hand, the pond with 80% of shading presented the lowest mean density of organisms; from the perspective ofwastewater treatment, however, it can be considered the most efficient in terms of organic matter and nutrient removal. According to the regression analysis, the algal biomass in HRPs can be maximized mostly if we consider the positive effect of carbon and phosphorus and the limiting effect of nitrogen and non-biodegradable organic load. For the conditions evaluated in this study, the photoinhibition phenomenon was not observed. Other aspects such as competition with other microorganisms for space and nutrients, or predation by zooplankton, seemed to be more significant for the growth and development of algal biomass.
Sustainable airport environments : a review of water conservation practices in airports.
(2013) Carvalho, Isabella de Castro; Calijuri, Maria Lúcia; Assemany, Paula Peixoto; Silva, Marcos Dornelas Freitas Machado e; Moreira Neto, Ronan Fernandes; Santiago, Aníbal da Fonseca; Souza, Mauro Henrique Batalha de
Airports consume significant amounts of water to maintain their infrastructure. Given the increasing worldwide demand for this type of transport and the current situation of water scarcity in many regions of the planet, efforts should be made to assess water consumption profiles as well as alternatives for its efficient use. In airport complexes, most of the water is used to meet non-potable demands, making them potential environments for implementing conservation practices aimed at reducing these demands – such as water metering and installation of water saving fixtures – and also for searching for alternative sources, such as rainwater and treated greywater or domestic sewage effluent. This review presents information regarding water consumption in globally important airports in order to provide a basis for studies that guide policies and decision-making toward a sustainable management of these environments during the planning and execution of construction, expansion and modernization projects.