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Through the design, construction and use of a digester and intervention strategy for the first half of 2014 with a group of 30 high school juniors National Pedagogical Institute arises. During the intervention the concepts of chemical kinetics, pH and chemical equilibrium are studied, relating the rate of decomposition of organic matter leading to the production of biogas, pH optimum conditions for the survival of bacteria and Factors affecting the reaction rate. Among the main strategies used are both academic lectures and briefings capable of guiding discussions in the field of csc and visits to the farm, a place where the digester is available. The results are satisfactory, can generate more willing to chemistry class and encourages critical thinking of students. In addition, can deepen the implications and finding possible solutions to the environmental and social impact that involves large-scale exploitation of gas.

Construcción de un biodigestor y sus implicaciones en la enseñanza de la química: una experiencia de aula basada en una cuestión sociocientífica (CSC)