Biofuels from Microalgae: Towards Meeting Advanced Fuel Standards

Brennan, Liam; Owende, Philip

doi:10.1007/978-1-4614-3348-4_24

Cited by 21 publications

(15 citation statements)

References 196 publications

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“…Many different designs have been developed, and the main categories include: i) tubular; ii) flat; and iii) column PBRs. The largest closed PBRs are tubular, like the 25 m 3 plant at Mera Pharmaceuticals, Hawaii, and the 700 m 3 plant in Klötze, Germany (Brennan and Owende, 2013;Dragone et al, 2010;Olaizola, 2000). These PBR systems are relatively cheap, have a large illumination surface area and have quite good biomass productivities.…”

Section: Closed Systemsmentioning

confidence: 96%

Continuous cultivation of photosynthetic microorganisms: Approaches, applications and future trends

Fernandes

Mota

Teixeira

et al. 2015

Biotechnology Advances

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The possibility of using photosynthetic microorganisms, such as cyanobacteria and microalgae, for converting light and carbon dioxide into valuable biochemical products has raised the need for new cost-efficient processes ensuring a constant product quality. Food, feed, biofuels, cosmetics and pharmaceutics are among the sectors that can profit from the application of photosynthetic microorganisms. Biomass growth in a photobioreactor is a complex process influenced by multiple parameters, such as photosynthetic light capture and attenuation, nutrient uptake, photobioreactor hydrodynamics and gas-liquid mass transfer. In order to optimize productivity while keeping a standard product quality, a permanent control of the main cultivation parameters is necessary, where the continuous cultivation has shown to be the best option. However it is of utmost importance to recognize the singularity of continuous cultivation of cyanobacteria and microalgae due to their dependence on light availability and intensity. In this sense, this review provides comprehensive information on recent breakthroughs and possible future trends regarding technological and process improvements in continuous cultivation systems of microalgae and cyanobacteria, that will directly affect cost-effectiveness and product quality standardization. An overview of the various applications, techniques and equipment (with special emphasis on photobioreactors) in continuous cultivation of microalgae and cyanobacteria are presented. Additionally, mathematical modeling, feasibility, economics as well as the applicability of continuous cultivation into large-scale operation, are discussed.

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Section: Closed Systemsmentioning

confidence: 96%

Continuous cultivation of photosynthetic microorganisms: Approaches, applications and future trends

Fernandes

Mota

Teixeira

et al. 2015

Biotechnology Advances

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“…Besides, for developing countries such as Africa, Asia and South America, reduction of arable land will just leads to severe food shortage since with the rapidly increase of world's population. Therefore, the productions of the edible feedstocks or generally called first generation biofuel are unsustainable and will affect world's food resources and require production land areas [18]. The second generation biofuels appear as an attractive alternative feedstock for biofuel production.…”

Section: Introductionmentioning

confidence: 99%

Low-cost solid catalyst derived from waste Cyrtopleura costata (Angel Wing Shell) for biodiesel production using microalgae oil

Syazwani

Rashid

Taufiq-Yap

2015

Energy Conversion and Management

111

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a b s t r a c tIn the present work, Cyrtopleura costata (Angel Wing Shell) is used for the first time to synthesis of CaO. The produced CaO was utilized as a catalyst for biodiesel production from microalgae Nannochloropsis oculata oil. The Angel Wing Shell (AWS) was calcined at 800°C and 900°C for 2 h to convert CaCO 3 to activate metal oxide phase. The synthesized catalysts were characterized by using Thermogravimetric analysis (TGA), X-ray diffraction (XRD), Temperature programmed desorption of CO 2 (CO 2 -TPD), BET surface area and Scanning electron microscopy (SEM) analysis. The calcined Angel Wing Shell at 900°C (CAWS 900) was chosen as the best catalyst due to its high basicity and surface area. This also corresponded to optimization condition where, CAWS 900 showed highest FAME yield (84.11%) at oil to methanol molar ratio 1:150 and catalyst loading of 9 wt.% in 1 h reaction time. The CAWS 900 catalyst also can be reused more than three times with FAME yield greater than 65%. Overall, AWS appears to be an acceptable solid catalyst to convert microalgae oil to biodiesel.

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“…Harvesting is generally a multistage process resulting in the concentration of algae in water, being responsible for up to 30% of the total production costs. It generally involves one or more steps of solid-liquid phase separation, such as flocculation, filtration, flotation, settling and/ or centrifugation [98]. Centrifuges are a proven technology that has been used as a means for harvesting algae for many years [74].…”

Section: Microalgae Biomass Harvesting and Conversionmentioning

confidence: 99%

Microalgae biorefineries: The Brazilian scenario in perspective

2017

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Biorefineries have the potential to meet a significant part of the growing demand for energy, fuels, chemicals and materials worldwide. Indeed, the bio-based industry is expected to play a major role in energy security and climate change mitigation during the 21th century. Despite this, there are challenges related to resource consumption, processing optimization and waste minimization that still need to be overcome. In this context, microalgae appear as a promising non-edible feedstock with advantages over traditional land crops, such as high productivity, continuous harvesting throughout the year and minimal problems regarding land use. Importantly, both cultivation and microalgae processing can take place at the same site, which increases the possibilities for process integration and a reduction in logistic costs at biorefinery facilities. This review describes the actual scenario for microalgae biorefineries integration to the biofuels and petrochemical industries in Brazil, while highlighting the major challenges and recent advances in microalgae large-scale production.

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Biofuels from Microalgae: Towards Meeting Advanced Fuel Standards

Cited by 21 publications

References 196 publications

Continuous cultivation of photosynthetic microorganisms: Approaches, applications and future trends

Continuous cultivation of photosynthetic microorganisms: Approaches, applications and future trends

Low-cost solid catalyst derived from waste Cyrtopleura costata (Angel Wing Shell) for biodiesel production using microalgae oil

Microalgae biorefineries: The Brazilian scenario in perspective

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