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Research will use carbon dioxide as a raw material for controlled release of agrochemicals

Brazil Portuguese

Embrapa started the AgriCarbon, a research project that will use carbon dioxide (CO2) for the production of supports (material for formation of capsules) of controlled release of agrochemicals. According to the project coordinator, the researcher of Embrapa Agroenergia Sílvio Vaz Jr., nanoscale supports will be developed for controlled release of molecules of agrochemicals, which can be a fertilizer, an antibiotic or a semiochemical (substance involved in communication between living beings as insects and used in pest management).

The goal is, through controlled release, to increase application efficiency and reduce environmental pollution inherent in the use of conventional agrochemicals. The work has resources from the R & D Program of the National Electric Energy Agency (Aneel) and Eletrobrás Electric Power Generation Company (CGTEE).

The project proposes the development of formulations that will gather in the same product: nanocarbonates, obtained from the carbonic gas; lignin, from the pulp and paper industry; and the agrochemical of interest. Nanocarbonate has the function of adsover (fix) agrochemicals, while lignin, a natural polymer present in plants, is used as an additive to improve this adsorption. In the case of fertilizer, the result is the gradual release of the agrochemical increasing its efficiency and reducing losses of the product to the environment. Part of the conventional fertilizer is lost by runoff, sublimation and other processes, which can contaminate the environment.