Considering the continuous increase of waste generation, waste prevention appears as a pro-environmental alternative to decrease the amount of waste landfilled, contributing to the mitigation of environmental impacts.To guarantee the efficiency of a prevention program, it is indispensable to have a detailed characterization, which will provide the data for the implementation analysis.Thus, in this project, the waste generated at the FEC/UNICAMP was characterized and separated into the following categories: paper (58.76%), organic (29.69%), plastic (8.77%), mixed (1.94%) and aluminium (0.84%).Based on the composition analysis, waste prevention measures were proposed, as well as a new collection system.