; charset=UTF-8" /> Microalgae: a green source of renewable H2 – research paper from MIT | Oilgae Blog

Comprehensive Algae Fuels 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

The 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 ››

Bioplastics Market & Strategy Advisor

Bioplastics Market & Strategy Advisor, published by the Bioplastics Guide, is a unique guiding framework for businesses and entrepreneurs to chart a way forward provides a critical analysis of the status, opportunities & trends of the global bioplastics sector. More ››

Algae-Useful Substances





Other Novel Applications

Talk to us

Email: consult@eai.in


Call Narsi 7358263274

займ на карту ночью

Microalgae: a green source of renewable H2 – research paper from MIT

February 17th, 2007 | No Comments | Posted in Algae-Hydrogen

You are at: Oilgae Blog. See the complete list of Oilgae Blog articles.

Do you know that oil derived from algae is an exciting renewable fuel possibility? – see Oilgae for more.

Microalgae: a green source of renewable H2 – a research paper from MIT, Dec 2000

Maria L. Ghirardi, Liping Zhang, James W. Lee, Timothy Flynn, Michael Seibert, Elias Greenbaum and Anastasios Melis

Abstract & Introduction

This article summarizes recent advances in the field of algal hydrogen production. Two fundamental approaches are being developed. One involves the temporal separation of the usually incompatible reactions of O2 and H2 production in green algae, and the second involves the use of classical genetics to increase the O2 tolerance of the reversible hydrogenase enzyme.
The economic and environmental impact of a renewable source of H2 are also discussed.

Hydrogen (H2) metabolism is primarily the domain of bacteria and microalgae. It occurs in many, taxonomically diverse, species, takes place by a variety of biochemical mechanisms and processes, and has many physiological adaptations1–4. Microbial H2 formation is catalysed by either nitrogenases or hydrogenases, enzymes that can only function under anaerobic conditions. Nitrogenases are used by certain cyanobacteria (blue–green algae) and photosynthetic bacteria, whereas green algae use hydrogenase(s) to photoevolve H2. Nitrogenase-catalysed H2 evolution has been examined as a means of producing H2 gas commercially5–8. However, this has limitations including the low catalytic turnover rate of the enzyme9,10 and the high energy requirement (two or more ATP molecules per electron transported11).

The H2 metabolism of green algae was discovered in the early 1940s by Hans Gaffron12. He observed that green algae (under anaerobic conditions) can either use H2 as an electron donor in the CO2-fixation process or evolve H2 in both dark and the light. These original observations were later extended to many other green algae including Chlamydomonas reinhardtii13–15, Chlorella fusca16 and Scenedesmus obliquus12,17. H2 production in eukaryotic green algae requires a period of several minutes to a few hours of anaerobic incubation in the dark14,18–20. This apparently induces the biosynthesis and/or activation of the reversible hydrogenase, and probably of other H2-metabolizing enzymes, and enables the cells to photoproduce H2.

Read more from the original paper (PDF)

Nature gave us oil from algae; perhaps we should try Nature’s way again

Oilgae – Oil & Biodiesel from Algae
Oilgae Blog; The complete list of Oilgae Blog articles.
algOS – Biodiesel from Algae Open Source

About Oilgae – Oilgae – Oil & Biodiesel from Algae has a focus on biodiesel production from algae while also discussing alternative energy in general. Algae present an exciting possibility as a feedstock for biodiesel, and when you realise that oil was originally formed from algae – among other related plants – you think “Hey! Why not oil again from algae!”

Leave a Reply 6650 views, 1 so far today | | posted by

Leave a Reply

You must be logged in to post a comment.

Hot Algae Products (Click to know more)
Omega 3 Spirulina Astaxanthin Chlorella

Get in Touch

Send us a message to know more on how oilgae.com can help your organization.