Which biobased substrate will create a durable form of bio-plastic? Which biobased material has the least effect on the composition of compost and runoff through degradation?
Compostable plastics are a new generation of plastics that are biodegradable through composting. They are derived generally from renewable raw materials like starch (e.g. corn, potato, tapioca etc), cellulose, soy protein, lactic acid etc., are non-hazardous/non-toxic in production and decompose back into carbon dioxide, water, and biomass when composted. Some compostable plastics may not be derived from renewable materials, but instead made from petroleum or made by bacteria through a process of microbial fermentation.
Students create and test the durability of biobased plastic.
From the Chemical Heritage Foundation, with funding from the Pew Center for Arts and Heritage. Students participate in a case study hearing regarding a proposed Environmental Protection Agency (EPA) Regulation to reduce plastic waste in the United States. All resources and instructions are found at chemheritage.org.
Students create bio-based bubbles to compare a biobased product to non-biobased bubbles.
The biobased content of a bioplastic can be reported in several ways. The most common is based on a weight-percent of renewable resource content. The second most common is as a percent biobased carbon content in the bioplastic. This measurement is the basis for certification under the USDA BioPreferred Program, a federal program that promotes the purchase and use of biobased products.
What kind of data do farmers use to make decisions? Where does that data come from? Become a “farmer” on a journey from pre-planting to harvest to see what decisions farmers are making every year as they farm (or step into a farmer’s sh…
Why do farmers spend time and money to apply chemicals to their fields? In this threaded PBL*, (an effort to integrate agricultural understandings into the normal sequence of an Environmental Science classroom) students will conduct several “close reads” (reading for understanding, analysis and appl…
How might soymilk, and other types of milk, help ensure food security? Investigate various milk sources and their composition through core disciplines of Science, Math, Social Studies and Language Arts to discover the availability of milk types within multiple cultures that serve …