Biodiesel de microalgas: avanços e desafios

Microalgae biomass has been described by several authors as the raw material with the greatest potential to meet the goals of replacing petroleum diesel by biodiesel while not competing with arable land suitable for food production. Research groups in different countries are seeking the most appropriate production model for productivity, economic viability and environmental sustainability. This review focused on recent advances and challenges of technology for the production of biodiesel from microalgae, including the procedures used to obtain biomass.

Desarrollo de un proceso de remoción de nutrientes de efluentes eutróficos por un consorcio de microalgas nativas de Nuevo León, México cultivadas en un nuevo fotobiorreactor.

Tesis (Maestría en Ciencias con orientación en Química Analítica Ambiental) UANL, 2014.

Remoção de Microalgas de efluentes de lagoas de estabilização utilizando biofiltro

This research evaluated the microalgae removal produced in a stabilization pond system using biofilters as post-treatment, besides characterizing the effluents of stabilization ponds and filters in relation to concentrations of algal biomass (chlorophyll a and suspended solids), organic matter (BOD and COD), total phosphorus, orthophosphate, pH and dissolved oxygen, and tried to correlate physicochemical parameters with chlorophyll "a". It was held at the Ponta Negra ETE which is constituted by three stabilization ponds, with a primary facultative pond and two of maturation. For the algae removal were used two submerged bio-filters: the filter FPF (Facultative Pond Filter), fed with facultative pond effluent; and the filter MPF (Maturation Pond Filter), fed with second maturation pond effluent. The filling material of both filters was predominantly gravel no. 2, although it contains portions of gravel no. 1 and no. 3. The filters operating conditions were bad, they were nearly 10 years without maintenance, without cleaning or removal of sludge since the time of its construction, and part of the filling material may be obstruct. Despite poor operating conditions were obtained satisfactory results, in level of posttreatment. Removal efficiencies in relation to BOD and COD were 7 and 25% in FPF and 9 and 19% and in MPF, respectively. In relation to TSS efficiencies in MPF and FPF were 37 and 20%, respectively. As for the chlorophyll "a" removal, the FPF efficiency was 44% and the MPF was 40%. There was 50% of consumption of dissolved oxygen, on average, within the filters. Two profiles were performed in the filters, and it was possible to conclude that variations throughout the day were not statistically significant, and that, regardless of the time of collection, they would have the same representation comparing to the time of data collection (7 am) and the daily average, although individual variations throughout the day have been shown to be significant. Another important observation is that the correlations between Chlorophyll a and TSS were bigger and more significant in the effluent of the filters than in the effluent of the ponds

Ação alelopática de saxitoxinas e microcistinas em cianobactérias e microalgas verdes em condições controladas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeito da irradiação ultrasônica em microalgas Selenastrum capricornutum e Chlorella sorokiniana

Pós-graduação em Ciências Biológicas (Microbiologia Aplicada) - IBRC

Microalgas na Produção de Biodiesel: Extração e Composição Lipídica

The uninterrupted rise in emission of greenhouse gases open way to the use of biofuels, due to politics that focus on fuel safe, clean and renewable. The use of microalgae for biodiesel production has been described as one of the most promising sources of biomass for biofuels. The aim of this study was to evaluate the extraction and lipid profile of the microalgae Dunaliella tertiolecta, Isochrysis galbana and Tetraselsim gracilis. The extractions were performed with solvents chloroform /methanol and petroleum ether. The lipid profile was analyzed by gas chromatography after transesterification.The petroleum ether showed more efficiency in the extraction, the best result obtained was in the microalgae D. tertiolecta with 19.52% of lipid. The lipid profile analysis indicated a biodiesel stable to oxidation and elevated viscosity

Efeito das relações bióticas sobre o estabelecimento de macroalgas de ecossistemas lóticos tropicais: interação com microalgas e pressão por herbivoria

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Biodiesel renovável derivado de microalgas: avanços e perspectivas tecnológicas

Microalgae are a promising source of raw material for biodiesel production. This review discusses the latest developments related to the application of microalgae biomass for biodiesel production. Characterization of fatty acid of microalgae and comparisons with other sources of raw materials and processes are presented. Furthermore, technological perspectives and approaches for growing microalgae in photobioreactors, microalgal oil extraction techniques, and procedures for synthesizing biodiesel are reviewed.

El cultivo de Macro- y Microalgas para el desarrollo de nuevas aplicaciones ecológicas y energéticas

[ES]En el escenario mundial de los últimos años, la necesidad de desarrollar soluciones sostenibles que ayuden a minimizar el aumento de los problemas medioambientales y energéticos, ha relanzado el interés por la utilización de macro- y microalgas cultivadas en sistemas basados en el aprovechamiento de la capacidad fotosintética que presentan estos organismos. Como ejemplos representativos se presentan: (1) el cultivo de macroalgas en sistemas de policultivo integrado y, (2) el cultivo de microalgas para la obtención de biocombustibles

Aislamiento y caracterización de microalgas formadoras de tapetes microbianos asociados a un cultivo hidropónico de plantas halófitas

Programa de Doctorado Ecología y Gestión de los Recursos Vivos Marinos

Aproximación al empleo de microalgas marinas en la producción de rumiantes neonatos : repercusiones sobre la inmunidad y calidad de los productos

Programa de doctorado: Sanidad Animal. Premio Extraordinario de Doctorado en la rama de Ciencias de la Salud 2011-2012

Colección Bimbache: en busca de las microalgas tras la erupción submarina de El Hierro

Banco Español de Algas, Las Palmas de Gran Canaria, España. Universidad de Colonia (Alemania)