Resumo

SANCHEZ-BORROTO, Yisel; MELO-ESPINOSA, Eliezer Ahmed; MARTINEZ-DARANAS, Beatriz  e  MARIA-SUAREZ, Ana. Evaluation of the drying process of algal biomass using an oven and a solar dryer. RTQ [online]. 2024, vol.44, n.2, pp. 367-387.  Epub 30-Maio-2024. ISSN 2224-6185.

Nowadays marine and coastal ecosystems are threatened by the invasion of harmful algal species. The solution to this situation should be aimed at the integral use of this biomass. The drying process has a decisive impact on the quality of the resulting raw material and the cost of any derived by-products. For this reason, the objective of this research is to evaluate the drying process of macroalgae: Sargassum fluitans, Ulva lactuca and Chaetomorpha cf. gracilis, using a solar dryer designed for this purpose. The drying process was evaluated at a temperature of 60°C. The results obtained reported that dehydration in the oven lasted less than 2 hours, while in the solar dryer values higher than those achieved in the oven were recorded. The first derivative analysis shows that the highest peak of moisture loss is around 80 % and is reached in the first 15 min in the electric stove. However, in solar drying it was recorded around 45 min. The results obtained in the drying process were adjusted to a polynomial model with a determination coefficient of 99,13 %

Palavras-chave : Solar drying; macroalgal biomass; Sargassum fluitans; Ulva lactuca; Chaetomorpha cf. gracilis.

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