Uso de diferentes elementos filtrantes em amostras de água do rio Ipojuca: Uma oficina interdisciplinar

Abstract

This experience report describes a interdisciplinary workshop developed by teachers in the field of Natural Sciences, carried out in the context of the National Week of Science and Technology. The activity aimed to engage students in investigating the most efficient filtering agent for the treatment of polluted water from the Ipojuca River, considering different flow rates. To this end, different filtering materials were tested, including qualitative and quantitative filter paper, activated carbon, excelsior, pine wood, and wood shavings. In the preliminary survey of students’ conceptions, activated carbon was identified as the agent believed to be the most efficient. However, the experimental results indicated greater efficiency in filtration processes using filter papers. This finding prompted further questioning by the students, who highlighted the need for a more in-depth investigation into the factors that influenced the lower performance of activated carbon under the experimental conditions adopted. The proposed activity enabled students to analyze the filtration experiment from different perspectives, considering the influence of the materials used and the operational conditions, which contributed to the development of technical and scientific knowledge.