The city of Riobamba captures for human consumption groundwater from melting glaciers, from seven wells in the foothills of the Chimborazo volcano. The objective is determine the percentage of existing microplastics in drinking water distribution system. Sixty two samples were collected, analysed with a cellulose filter and Nile red dye. Then observed in a stereoscope, obtaining presence in 12 samples of the 62 analysed. The results of the analysis show that there is a 19% presence of microplastics.
Microplastics are small synthetic particles that come from petroleum derivatives, are difficult to degrade and their origin is found in industrial activity and domestic consumption, even in tires. The presence of small particles (0.1 µm to < 5 mm) of plasticizer Bis (2-ethylhexyl) phthalate (DEHP) and synthetic rubber, which due to their size and origin are called microplastics. The friction occurs between the asphalt in contact with the tires of cars generate the detachment of small residues of it, these residues come to contain a DEHP element. Simple residual water samples were carried out in the different sewage collectors in Riobamba city, 250 mL of each of these samples were filtered using vacuum suction equipment, to then examine the filters with a visual microscope. Obtaining as a result that 80% of the samples taken and analyzed in the laboratory contain the clear presence of DEHP plasticizer from the friction of tires (confirmed by the Principal Component Analysis) with the asphalting of the streets of the city of Riobamba, and that only 20% of the samples analyzed do not present DEHP plasticizer of this type, generating a medium risk for the health of humans and aquatic animals in the sector.
The process of obtaining compost was developed at the Agroambiental Ricpamba theme park administrated by the Autonomous Municipal Government of Riobamba (GADM, where an organic fertilizer was obtained from solid waste generated in the wholesale market of the city of Riobamba in order to be use in parks, gardens, green spaces and in agriculture, for which, a stack of 1,0 tonne was armed formed with fixed proportions in relation to weight / weight from three organic components of plant type: Organic solid waste wholesale market (600 kg), tree pruning waste of the Polytechnic School of Chimborazo (300 kg), and prunings waste of ornamental palm (Phoenix canariensis) from the city of Riobamba (100 kg) To achieve adequate carbon nitrogen ratio (C/N). The compost was performed using an open stack system and manual turning; during the process a daily control of temperature and humidity was performed, besides that during each dump material samples were taken for analysis of the most important parameters, thus controlling the process. The temperature evolution of the stack in the mesophilic phase reached 45 °C and thermophilic phase temperature was above 60 °C, which was controlled with
Riobamba has areas with high vehicular influence. For the determination of nitrogen dioxide concentrations, passive samplers were used, which were placed at points throughout the domain. The concentrations obtained in the field were interpolated with the information generated with the model traffic emissions software, estimating the relationship between vehicular traffic and the presence of gas. Allow to know the amount of pollutants that breathe about 250 pedestrians on average in the area.
The incorporation of sustainable projects in the construction field and the use of prefabricated products allow to provide solutions for the real estate industry due to low cost. The goal of this research is to confirm the sustainability criteria of three different certifications such as: BREEAM, LEED and VERDE. Making paired comparisons based on the AHP method relating according to priorities of importance, preference or probability of pairs of the elements, based each time on a represented criteria in the decision hierarchy. According to the calculated values and the results, the AHP process was used to evaluate certification methods. The results of weighting between the three certification methods, determined that LEED adjusts to the reality of the Andean zone of Ecuador. As this area is a fragile place and susceptible to the contamination of water, soil and ecosystems, the innovation presented in this method, when ranking and comparing the weightings, makes it have greater weight compared to the other two analyzed. In this way, it was possible to interpret and develop a table of importance of suitable criteria to be implemented in the Andean zone, having as a result that the most important criterion is water with a percentage of 40.43%.
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