Comprehensive Oilgae Report

A detailed report on all aspects of the algae fuel value chain, the Comprehensive Oilgae Report will be of immense help to those who are on the threshold of investing in algae biofuels. More ››

Algae-based Wastewater Treatment

Compiled by a diverse team of experts, with experience in scientific and industrial fields, the Comprehensive Report for Wastewater Treatment Using Algae is the first report that provides in-depth analysis and insights on this important field. It uses innumerable data and information from a wide variety of expert sources and market studies, and distills these inputs and data into intelligence and a roadmap that you can use. More ››

Comprehensive Guide for Algae-based Carbon Capture

A Comprehensive Guide for Entrepreneurs and Businesses Who Wish to get a Basic Understanding of the Business Opportunities and Industry Dynamics of the Algae-based CO2. More ››


Comprehensive Report on Attractive Algae Product Opportunities

This is for entrepreneurs and businesses who wish to get a basic understanding of the algae fuel business and industrThe report provides an overview of the wide range of non-fuel applications of algae – both current and future prospects. It will provide entrepreneurs with an idea of how to derive more benefits from their algal energy ventures. The report provides detailed case studies, success stories and factoids of companies that have been involved in the algae products venture. More ››

Comprehensive Castor Oil Report

There is no other comprehensive report available for castor oil anywhere in the world. This is the first of its kind, and currently, the only one. More ››

Algae-Useful Substances

Pigments

PUFAs

Vitamins

Anti-oxidants


Algae for Pollution Control

Other Novel Applications

Algal Oil Yields

Microalgae, like higher plants, produce storage Lipids in the form of triacyglycerols (TAGs). Comparatively algae produce more oil than any other oilseeds which are currently in use. Many microalgal species can be induced to accumulate substantial quantities of lipids, often greater than 60% of their biomass.

Comparison of average oil yields from algae with that from other oilseeds 

The table below presents indicative oil yields from various oilseeds and algae. Please note that there are significant variations in yields even within an individual oilseed depending on where it is grown, the specific variety/grade of the plant etc. Similarly, for algae there are significant variations between oil yields from different strains of algae. The data presented below are indicative in nature, primarily to highlight the order-of-magnitude differences present in the oil yields from algae when compared with other oilseeds. (See also: Vegetable Oils Yields & Characteristics – from Journey to Forever)

Yields ( Gallons of oil per acre per year )

Corn18
Soybeans48
Safflower83
Sunflower102
Rapeseed127
Oil Palm635
Micro Algae5000-15000

Source: http://oakhavenpc.org/cultivating_algae.htm

Oil content of few microalgal species:

Microalgal speciesOil content(% dw)
Ankistrodesmus   TR-8728-40
Botryococcus braunii29-75
Chlorella   sp.29
Chlorella protothecoides(autotrophic/   heterothrophic)15-55
Cyclotella   DI- 3542
Dunaliella tertiolecta 36-42
Hantzschia   DI-16066
Nannochloris31(6-63)
Nannochloropsis 46(31-68)
Nitzschia TR-11428-50
Phaeodactylum tricornutum31
Scenedesmus   TR-8445
Stichococcus33(9-59)
Tetraselmis suecica15-32
Thalassiosira   pseudonana(21-31)
Crpthecodinium cohnii20
Neochloris oleoabundans35-54
Schiochytrium50-77

The key question in everyone’s mind is: which is the best species of algae for biodiesel? The decades-long research undertaken by NREL of USA – called the Aquatic Species Program (see a copy of the Aquatic Species Program Research notes here, but please remembers it is a large PDF file!) suggested few high-oil-containing algae strains.

The strains of Algae most favoured by the NREL researchers were Chlorophyceae (green algae). Green algae tend to produce starch, rather than lipids. Green algae have very high growth rates at 30oC. The other algae favoured by NREL researchers are diatoms. However, the Diatoms need silicon in the water to grow, whereas green algae require nitrogen to grow.

The lipid and fatty acid contents of Microalgae vary in accordance with culture conditions. Microalgae are known to accumulate more lipids in nutrient deficient conditions. Researchers identified the most dramatic increases in the lipid content of the cultures during N-deficient conditions. Biochemical studies have also suggested that acetyl-CoA carboxylase (ACCase), a biotin-containing enzyme that catalyzes an early step in fatty acid biosynthesis, may be involved in the control of this lipid accumulation process. Therefore, it may be possible to enhance lipid production rates by increasing the activity of this enzyme via genetic engineering. 

Theoretical maximum yields of few microalgae in open ponds:

SpeciesYield (in g/m2/day)
Marine   Nannochloropsis20 (~ 30% lipids)
Spirulina   plantesis10.3
Dunaliella   salina12.0
Scenedesmus species13.4
Ankistrodesmus18
Haematococcus   pluvialis3.8

Research experiments are however carried out to determine exactly how promising algae biofuel production can be by tweaking the inputs of carbon dioxide and organic matter to increase algae oil yields.

Read more: http://www.oilgae.com/algae/oil/biod/res/res.html

Related Links:

Photobioreactors: Design Considerations for Sustainable High-Yield Algal Oil Production 

A Breakthrough Technology to Transform Algae into Oil 

Theoretical Maximum Algal Oil Production 

The Potential of Microalgae Isolated from Wastewater Treatment Plants to Be Used A Feedstock for Biodiesel Production

Biodiesel: Algae as a Renewable Source for Liquid Fuel

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