Abstract
Effect of Physical, Chemical and Biological Mechanisms on the Solid-Liquid Separation of Microalgae
Highlights
Sustainable energy production is one of the most important resources for humanity
Considering the obstacles still found in harvest stage of the microalgae industrial processing, this study aims to evaluate the effect of physical, chemical and biological mechanisms on the solid-liquid separation of microalgae and the possibility of large-scale reproduction, discussing the advantages and disadvantages of each process, its applicability, cost-benefit and efficiency
Microalga Isochrysis galbana provided from Federal Fluminense University (Rio de Janeiro, Brazil) and cyanobacterium Spirulina maxima obtained from Federal University of São Carlos (São Paulo, Brazil) were maintained in 250mL Erlenmeyer flasks containing 125mL of F/2 medium and AO medium [14,15], respectively
Summary
Sustainable energy production is one of the most important resources for humanity. Sunlight is a vital energy source for the Earth and photosynthesis is the main biological process that channels solar energy into the biosphere [1]. Different strains of microalgae are used in different purposes, in order to generate high biomass and bioproducts productivity with low harvest cost [4,5]. Among the advantages of using microalgae, they are cultivable throughout the year, can grow in reuse water and in non-arable land without altering soil use, minimizing the associated environmental impacts, without compromising food production [6,7]. Many strategies being employed to generate microalgae biomass. Important considerations include strain selection, cultivation methods, separation and pretreatment processes. Strain selection plays an important role because microalgae biodiversity differs in their productivity. Separation and pretreatment affect the total amount of harvested microalgae and the downstream process [8]
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