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| I replace the plastic / I've been cassava |
The damage caused of plastic products are huge, according to latest statistics 150 tonnes of this product are manufactured each year worldwide and 95% of them end up in landfills without any treatment, subject to a long process of decomposition. However, the plastic products are very useful, how to imagine life without them?
My grandmother used to say: has a solution for everything! There are many studies in this area with natural materials, many found in agriculture, such as potatoes, sugar cane, maize and cassava. Yes that cassava found in the Brazilian tables as flour, farofa, in the pudding or cake made by Grandma. The matter was discussed in the XV Brazilian Congress of Cassava, doubts? So take a look at this!
In 2007 researchers from the Polytechnic School of the University of São Paulo (USP) developed a plastic film based on cassava starch and sugars designed to be used in packaging. The plastic would be biodegradable, compostable, edible, with antibacterial properties and could change color according to the condition of the product.
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| I'm biodegradable, compostable, produced by clean production, free of carbon emissions and raw materials from renewable sources. I'm made from cassava. I replace plastic. |
The biggest advantage of bioplastic is lessen global warming caused by carbon emissions. Each kilogram of plastic made from petroleum releases about 6 kilograms of carbon dioxide. With the green plastics the opposite happens, every kilogram produced absorbs 2 to 2.5 kilograms of carbon dioxide due to photosynthesis of agricultural products used in its composition. Moreover, they are 100% recyclable and 70% of them are biodegradable and compostable (decomposes alone in 180 days and can be used in the composition of fertilizers for plants and vegetables).
The greatest difficulty found by the sector is the price, highest compared to glasses made from petroleum.
The objects can go in the freezer and also tolarate the heat up to 75°C (roughly the temperature of the coffee when just done) and are available in various colors and shapes.
The subject products made from cassava was discussed in the XV Brazilian Congress of Cassava,held in Salvador (BA), product manufacturers defended the use of glasses, trays, bags, plates and other items made from resin cassava during the FIFA World Cup held in Brazil by FIFA in June and are waiting for resolution of the authorities on the subject.
Good to know:
Other products are also in testing or in production in Brazil, such as a golf ball that degrades and becomes fish food if dropped in water, a chewing gum that does not stick, and other products derived from cane sugar, produced from the dehydration of ethanol.
Don't forget!
While the decomposition of a plastic cup made of petroleum may take 200 years, the cup made of cassava decomposes at 180 days and can serve as a fertilizer for plants and vegetables.
Each kilogram of plastic made from petroleum releases 6 kilograms of carbon dioxide during the manufacture of glasses, while each kilogram of plastic made from cassava absorbs 2 to 2.5 kilograms of carbon dioxide during the same manufacturing process.
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