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Author(s): Edson Neves da Silva, Luiz Carlos Brasil de Brito Mello, Ana Lúcia Torres Seroa da Motta
Pages: 1-6 Paper ID:162602-3939-IJCEE-IJENS Published: April, 2016
Abstract:-- This article aims to identify the relation between concepts and techniques of Lean Construction philosophy for the benefit of Green Building. It aims to evaluate construction companies of Rio de Janeiro to measure how much it is known and how much Lean and Green philosophies are combined in the project life cycle. The main results reveal gaps between knowledge and the adoption of these two philosophies in the development of a same project. One of the main conclusions is that Lean Construction and Green Building concepts need to be aligned in a project life cycle and used in a systematic way by construction companies
Keywords: Lean Construction, Green Building, Building Construction.
Full Text (.pdf)  International Journals Of Engineering and Science | 260 KB
Author(s): Roslan Omar, Ab Aziz Abdul Latiff, Raffidah Hamdan, Elias Ismail, Zailan Zahid , Azlin Selamat , Shazatul Irwan, Siddiq Mustafa
Pages: 7-18 Paper ID:163802-1919-IJCEE-IJENS Published: April, 2016
Abstract:-- Mass transfer is necessary for separation and adsorption processes. Even though mass transfer resistance controls the kinetic adsorption rate, little is known about the adsorption of a solute on a porous material from surface water. This study investigates the adsorption competition of five different synthetic micropollutants and the influence of the substances’ characteristics, such as molecular weight and density of mercury (Hg), cadmium (Cd), arsenic (As), dichlorodiphenyltrichloroethane (DDT), and chlordane (CHLs), on three different types of granular activated carbon using a column dynamic reactor. The application of modified mass transfer models allows us to determine the mass transfer resistance during the adsorption of more solutes on porous materials. Adsorption of synthetics Hg, Cd, As, DDT and CHLs onto SIG, SAG, and BAG that were started at difference percentage of outflow, although the sample was taken similarly, the outcomes were showed a significance competition between adsorbates onto adsorbents. Adsorption onto SIG showed the percentage outflow for Hg, Cd, As, DDT and CHLs (mixed solutions) were 20%, 19%, 19%, 16% and 8% respectively. Moreover, the adsorption onto SAG showed the percentage outflow were 16%, 13%, 19%, 23% and 24% respectively. The adsorption of Hg, Cd, As, DDT and CHLs (mixed solutions) onto BAG showed the percentage outflow were 16%, 8%, 5%, 18% and 8% respectively. The mass transfer resistance depends on the film mass transfer and porous diffusion before and after breakthrough. The results of this study advance our understanding of novel approaches for investigating the mass transfer resistance of the adsorption of solutes on porous materials from water.
Keywords: Adsorption, mass transfer, micro pollutants, granular activated carbon, mathematical model.
Full Text (.pdf)  International Journals Of Engineering and Science | 920 KB
Author(s): Micaella Moura, José Alberto L. de Souza, Simone Rosa da Silva
Pages: 19-23 Paper ID:164402-7575-IJCEE-IJENS Published: April, 2016
Abstract:-- This research aims to present major elements of rainwater harvesting system (RHS) to supply non-potable consumption points, using as a case study, the system deployed by shopping RioMar- Recife. The initial diagnosis included the building and water demands characterization, as well as a study of sizing methodologies for calculating the reservoir volume. Through the data collected, it was possible to analyze the potential of the existing reservoir depending on the conditions of local precipitation and of the catchment area adopted. Through the results obtained by the simulation method, comparing different values of fixed monthly demands, it could be verified that the deployed system has the capacity to serve a fixed monthly water demand of 1.439 m³, representing a 100 % autonomy. The analysis also compared the autonomy of a fictitious reservoir, bigger than the volume executed, in order to check if this could offer less water losses in the same period of 2013.The amount of rain water captured contributes substantially to a more efficient management of this resource throughout its use cycle.
Keywords: Rainwater harvesting systems, rainwater re-use, reservoirs sizing.
Full Text (.pdf)  International Journals Of Engineering and Science | 558 KB