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Tropentag, September 18 - 20, 2019 in Kassel

"Filling gaps and removing traps for sustainable resources development"

Sustainable Flour House: A New Concept on Cassava Processing

Taina Soraia Muller, J.V. Ribeiro de Carvalho, L.S. Lima Lemos, N.L. Loss, I. Linhares Junior, P.F. Onofre, A.C.B. Ferreira

Federal University of the South of Bahia, Brazil


Culturally, the cassava (Manihot esculenta Crantz.) is the most cultivated crop by local small farmers in the far South of the Bahia State, in Brazil. A mainly rural region, under Atlantic rainforest domain, where social and environmental conflicts are common. Most of the informal business trade is based on clandestine manioc flour processing units (known as Flour Houses) and responsible for the main source of income for smaller farmers. The process of cassava into flour generates Manipueira, a toxic liquid indiscriminatly discarded in the soil or watercourses. The lack of basic sanitation protocols, a very low quality undocumented flour, and enviromental poluting led the Department of Justice to order the closing and destruction of Flour Houses, which would cause a significant impact to poor population. These facts associated to technological barriers and defective value-chain motivated the creation of the Program for Sustainable Flour House. A sustainable processing system optimised to avoid waste and polution, to create jobs and increase income generation. To fulfil the sanitary requirements by law, the flour house was divided into dirty and clean areas, to recieve the roots from field for cleaning procedures, and the cleaned decorticated root for flour processing, respectively. The air circulation is kept by netting of the wide open windows. The rainwater is collected in a cistern and destinated to retro-fitting use. Solid residue and black waters are discarded into a evapotranspiration basin for fruit prodution. The Manipueira is collected in a system assembled by polyethylene water tanks for posterior multi-purpose use on the rural property. The wastewater is disposed on agroforest systems, which promote water percolation and food production. This adequacy aimed to optimise water cycle and residue management as employment and income increasement. So far, five families, have been benifited by adjusting the Flour Houses to current policies, it has saved their rural property from been notified by state prosecution and improved their main income activity.

Keywords: Employment, smallholder, toxic residue

Contact Address: Taina Soraia Muller, Federal University of the South of Bahia, Itabuna, Brazil, e-mail: tainamuller@ufsb.edu.br

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