Production of biofuels from microalgae - A review on cultivation, harvesting, lipid extraction, and numerous applications of microalgae

Enamala, Manoj Kumar; Enamala, Swapnika; Chavali, Murthy; Jagadish, Donepudi; Yadavalli, Rajasri; Kolapalli, Bhulakshmi; Aradhyula, Tirumala Vasu; Velpuri, Jeevitha; Chandrasekhar, K.

doi:10.1016/j.rser.2018.05.012

Cited by 325 publications

(117 citation statements)

References 151 publications

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“…This biodiesel, however, has the disadvantage of high viscosity and a lower heating value compared to neat Diesel [20]. The high viscosity of Biodiesel prevents its use directly in the DI engine as it triggers clogging of the injector and more considerable deposits in the cylinder [21,22]. Many efforts were in place to produce a neat alternative to diesel fitting the other renewable and environmental needs.…”

Section: Introductionmentioning

confidence: 99%

Comparative performance and emission studies of the CI engine with Nodularia Spumigena microalgae biodiesel versus different vegetable oil derived biodiesel

Sharif

Rao

Jagadish³

2020

SN Appl. Sci.

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Biodiesel is a renewable diesel fuel that can be burned in any unmodified diesel engine at any concentration. Biodiesel from Nodularia Spumigena microalgae produced by transesterification is used in the present study. Methyl esters of algae have been prepared after successful extraction of biomass in an open pond cultivation system. Biodiesel was blended with diesel fuel with the volumetric ratios of 10% (A10) and 20% (A20). The experiments were conducted on a constant speed (1500 rpm), 4-stroke diesel engine fitted with diesel particulate filter (DPF) at a fuel injection pressure of 180 bar. Methyl esters of Karanja oil, Rice Bran oil, and Castor oil were also tested in the same engine for comparison. BSFC values increased with increase in Biodiesel blend percentage in diesel. However, K20 and A20 showed fuel economy by 5.51% and 10.06% in comparison to diesel. The emissions of CO and HC with fuel A20 are decreased by 65.77% and 53.33% respectively. The NOx emission showed an increasing trend with the blending of algae methyl esters in diesel. The presence of DPF is credited for significant reduction of PM emissions. The results predicted that the usage of algae blends could be supported, although there is a slight reduction in engine performance and an increase in NOx emissions.

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Section: Introductionmentioning

confidence: 99%

Comparative performance and emission studies of the CI engine with Nodularia Spumigena microalgae biodiesel versus different vegetable oil derived biodiesel

Sharif

Rao

Jagadish³

2020

SN Appl. Sci.

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“…Interest in this field of research is increasing related to the potential of microalgae cultivation for a circular economy, once the microalgal produced biomass can be used and valued in several industries (e.g., food, feed, textile, pharmaceutical, bioplastic, biofuel, biofertilizer and cosmetic [33,45,46]). Nevertheless, cost efficacy of commercialization is still an issue and essential to attract investors to up-scale production, so the technology is still being developed in terms of research and development [46]. Current research lines focus on four strategic alignments: feedstock, process, products, and market uptake [30,47].…”

Section: Continuousmentioning

confidence: 99%

Microalgae Water Bioremediation: Trends and Hot Topics

et al. 2020

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The need to reduce costs associated with the production of microalgae biomass has encouraged the coupling of process with wastewater treatment. Emerging pollutants in municipal, industrial, and agricultural wastewaters, ranging from pharmaceuticals to metals, endanger public health and natural resources. The use of microalgae has, in fact, been shown to be an efficient method in water-treatment processes and presents several advantages, such as carbon sequestration, and an opportunity to develop innovative bioproducts with applications to several industries. Using a bibliometric analysis software, SciMAT, a mapping of the research field was performed, analyzing the articles produced between 1981 and 2018, aiming to identifying the hot topics and trends studied until now. The application of microalgae on water bioremediation is an evolving research field that currently focuses on developing efficient and cost-effective treatments methods that also enable the production of add-value products, leading to a blue and circular economy.

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“…A caracterização da biomassa de três diferentes microalgas com potencialidade para produção em fotobiorreator ou em raceway ponds estão apresentadas na Tabela 1. Estas microalgas são conhecidas por sua potencialidade para produção de biocombustíveis (Enamala et al, 2018), ricas em lipídeos ou carboidratos. Carboidratos podem representar a porção mais significativa da biomassa microalgal, e tem importância na aplicabilidade industrial da mesma.…”

Section: Caracterização Da Biomassaunclassified

Estudo da hidrólise enzimática de biomassa de microalga empregando uma sequência de enzimas

Julich¹,

Werlang²,

Müller³

et al. 2019

RJP

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O emprego de microalgas para desenvolvimento de produtos está em pleno desenvolvimento considerando a composição de diversas espécies e a adaptação das mesmas ao meio de cultivo. Neste trabalho realizou-se o estudo da hidrólise enzimática da biomassa da microalga considerando a potencialidade de produção a partir de cepas de Chlorella sp., Scenedesmus sp., e Spirulina (Arthrospira platensis) empregando uma sequência de enzimas composta de duas amilases e dois complexos de celulases. Para tanto, foi realizado inicialmente a caracterização das espécies, seguindo-se o estudo com a Spirulina, que apresentou 40,02 % de carboidratos e mais que a metade do teor em amido (24,95 %) se mostrando promissor o seu uso para a otimização da hidrólise enzimática. Os melhores resultados de conversão foram encontrados com 12 FPU da enzima CTec2 enquanto que foi com 6,9 FPU da enzima HTec2, alcançando próximo a 100 % de rendimento. Desta forma pode-se concluir que a hidrólise empregando uma sequência de enzimas, alfa-amilase, glucoamilase e celulases mostrou-se eficiente para a microalga Spirulina, mostrando a viabilidade de aplicação da biomassa para o desenvolvimento de outros produtos, tornando a produção de matéria prima para etanol mais renovável.

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Production of biofuels from microalgae - A review on cultivation, harvesting, lipid extraction, and numerous applications of microalgae

Cited by 325 publications

References 151 publications

Comparative performance and emission studies of the CI engine with Nodularia Spumigena microalgae biodiesel versus different vegetable oil derived biodiesel

Comparative performance and emission studies of the CI engine with Nodularia Spumigena microalgae biodiesel versus different vegetable oil derived biodiesel

Microalgae Water Bioremediation: Trends and Hot Topics

Estudo da hidrólise enzimática de biomassa de microalga empregando uma sequência de enzimas

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