Abstract:
:Vinasse is a residue that originates from the distillation of fuel alcohol. However, it contains a relative amount of nutrients. The aim of this work was to develop a nutritive solution using vinasse and to compare it with a commercial solution for the cultivation of lettuce, watercress and rocket. Vinasse obtained from juice must was decanted and filtered, followed by chemical analyses of the nutrients. A nutritive solution composed of 10% vinasse supplemented with nutrients was in agreement with the results of the chemical analyses (a similar amount of Furlani's solution). Experiments were then performed in an NFT (Nutrient film technique) system. The treatments used the vinasse solution and a commercial solution constituted from a Yara Fertilizantes(®) product. The height of the aerial part and the number of leaves of the crops were evaluated at 7, 14, 21, 28, 35 and 42 days. In most crops, the results were very similar. The vinasse solution promoted a larger number of leaves in lettuce and the highest aerial part in watercress. For the rocket, there were no significant differences between the two solutions. In conclusion, a nutritive solution was developed using vinasse, and this solution provided suitable growth, which was higher in some cases, for the crops studied herein. This study shows the great potential of this technology as a rational alternative to vinasse disposal.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
dos Santos JD,Lopes da Silva AL,da Luz Costa J,Scheidt GN,Novak AC,Sydney EB,Soccol CRdoi
10.1016/j.jenvman.2012.10.045subject
Has Abstractpub_date
2013-01-15 00:00:00pages
8-12eissn
0301-4797issn
1095-8630pii
S0301-4797(12)00550-6journal_volume
114pub_type
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