Biodiesel From Algae Challenges And Prospects Pdf

biodiesel from algae challenges and prospects pdf

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Biodiesel from algae: challenges and prospects.

Algae are increasingly emerging as one of the most promising sustainable and long-term sources of biomass and oils for fuel, feed food and other co-products. What makes them so attractive are the large number and wide variety of benefits associated with how and where they grow. This review presents added values and recent developments in resource recovery from microalgae. The main focus was in the cultivation and application of microalgae on biofuel recovery. Nearly all these benefits stem from the fact that these plants have evolved over billions of years to produce and store energy in the form of oil, and they do this more efficiently than any other known natural or engineered process.

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Depleting fossil fuel, soaring prices, growing demand, and global climate change concerns have driven the research for finding an alternative source of sustainable fuel. Microalgae have emerged as a potential feedstock for biofuel production as many strains accumulate higher amounts of lipid, with faster biomass growth and higher photosynthetic yield than their land plant counterparts. In addition to this, microalgae can be cultured without needing agricultural land or ecological landscapes and offer opportunities for mitigating global climate change, allowing waste water treatment and carbon dioxide sequestration. Despite these benefits, microalgae pose many challenges, including low lipid yield under limiting growth conditions and slow growth in high lipid content strains. Biotechnological interventions can make major advances in strain improvement for the commercial scale production of biofuel. We discuss various strategies, including efficient transformation toolbox, to increase lipid accumulation and its quality through the regulation of key enzymes involved in lipid production, by blocking the competing pathways, pyramiding genes, enabling high cell biomass under nutrient-deprived conditions and other environmental stresses, and controlling the upstream regulators of targets, the transcription factors, and microRNAs.

Coupling of Algal Biofuel Production with Wastewater

Val H. Smith, Robert C. Algae have significant potential as a renewable biofuels feedstock, but their promise is unproven at a scale that actually competes with the existing use of fossil fuels. The success of global algal biofuels initiatives will depend upon our ability to produce algal crops in a reliable, cost-effective and sustainable manner. Although the science of aquatic ecology per se has unfortunately been given insufficient emphasis to date in this nascent field, careful applications of its principles can play a vitally important role 1 by informing the rates and ratios of nutrients supplied to algal cultivation systems, 2 by guiding efforts to design and construct biotic communities that will help to maximize algal biomass yields and minimize grazing losses, 3 by guiding efforts to minimize biomass losses to infectious disease, 4 by applying decades of past experience in optimal harvesting theory to help guide the magnitude and frequency of algal crop harvests and 5 by helping to create biologically adaptive algal biomass production systems that are both resistant and resilient to future climate change. These general principles also should be broadly relevant to many other algal mass culture efforts, including those associated with aquaculture. High energy prices, coupled with increasing energy imports, uncertainties about future petroleum supplies and an increasing recognition of the environmental impacts of fossil fuels, are driving strong worldwide interest in the development of renewable biofuels Hill et al.

Metrics details. Microalgae have recently attracted considerable interest worldwide, due to their extensive application potential in the renewable energy, biopharmaceutical, and nutraceutical industries. Microalgae are renewable, sustainable, and economical sources of biofuels, bioactive medicinal products, and food ingredients. Several microalgae species have been investigated for their potential as value-added products with remarkable pharmacological and biological qualities. As biofuels, they are a perfect substitute to liquid fossil fuels with respect to cost, renewability, and environmental concerns. Microalgae have a significant ability to convert atmospheric CO 2 to useful products such as carbohydrates, lipids, and other bioactive metabolites.

In the present scenario, rapid industrialization and urbanization have led to a dramatic increase in the levels of various hazardous pollutants in the environment, and this creates a serious threat to humankind. Today, most of the energy production comes from fossil fuel combustion, which is the key source of CO2 emissions. Research studies show that the utilization of microalgae could be the best option for the production of renewable and sustainable energy and for the mitigation of CO2 emission. Production of biofuels from microalgae can be classified as solid biochar , liquid bioethanol, biodiesel, bio-kerosene , and gaseous biogas, bio-syngas, biohydrogen fuels. Algal lipids usually have a higher viscosity than petro-diesel; therefore, the transesterification process is required to decrease the viscosity of microalgal lipids before they can be combusted in the engines. However, microalgae are considered as a potential resource in the current biofuel industries; still, it fails at the commercial level.


Biodiesel from algae: challenges and prospects some of these challenges, in particular the optimization of algal biomass production and TAG content. Download: Download high-res image (KB) · Download: Download full-size image.


Biodiesel from algae: challenges and prospects.

Microalgae have gained enormous consideration from scientific community worldwide emerging as a viable feedstock for a renewable energy source virtually being carbon neutral, high lipid content, and comparatively more advantageous to other sources of biofuels. Although microalgae are seen as a valuable source in majority part of the world for production of biofuels and bioproducts, still they are unable to accomplish sustainable large-scale algal biofuel production. Wastewater has organic and inorganic supplements required for algal growth. The coupling of microalgae with wastewater is an effective way of waste remediation and a cost-effective microalgal biofuel production. In this review article, we will primarily discuss the possibilities and current scenario regarding coupling of microalgal cultivation with biofuel production emphasizing recent progress in this area.

It seems that you're in Germany. We have a dedicated site for Germany. This contributed volume presents the latest research and state-of-the-art approaches in the study of microalgae.

Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. Sustainable Third Generation Microalgae Based Biodiesel Production : Challenges and Opportunities Abstract: Since from centuries humans are utterly relied on the continual use of fossil for fulfilling daily desires, however with the increasing population fossil fuels are decreasing rapidly.

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Biodiesel from algae: challenges and prospects Microalgae offer great potential for exploitation, including the production of biodiesel, but the process is still.


Potential of Microalgal Biodiesel: Challenges and Applications

INTRODUCTION

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Prospects and Challenges in Algal Biotechnology

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