Rheological behavior of Chlorella sp. e Scenedesmus sp. cultures in different biomass concentrations

Engenharia Agrícola

Jane S. dos R. Coimbra¹  Márcio A Martins¹  Lucas de P. Corrêdo¹  Michel de O. dos Santos²  Richard S. Gates³ 

[1] Universidade Federal de Viçosa;Universidade Federal do Espírito Santo;University of Illinois at Urbana;

关键词: microalgae;    biomass;    production;    operation;   

DOI  :  10.1590/S0100-69162013000500017

来源: DOAJ

【 摘 要 】

Studies involving the use of microalgae are increasingly intensifying for the potential they present to produce biofuels, because they are a renewable energy source that does not compete directly with food production, and because they enable the obtaining of a fuel with less environmental impact when compared to fossil fuel. In this context, the use of microalgae is directly associated to its capacity to be produced on a large scale and to be extracted from the culture medium. Rheological studies are important for obtaining the information needed in the elaboration of projects and equipment that will be used in various operations existing in systems of production and extraction of algal biomass. In the evaluation of different levels of dry biomass concentration, studies have been conducted of the rheological behavior of cultures of Chlorella sp. BR001 and Scenedesmus sp. BR003. The Power Law model adjusted well to the data of shear stress as a function of strain rate. In all concentrations the cultures showed non-Newtonian behavior. It was observed to Scenedesmus sp. BR003 little effect of biomass concentration on the apparent viscosity and shear stress.

【 授权许可】

Unknown