Algae Micro Farms-Part 2

algae microfarmingMichael Smith of Algae Aqua-Culture Technology’s Green Power House™ is an environmental innovator of algae micro farming. His love for Montana’s natural surroundings combined with his software and engineering skills manifested a green biorefinery into a reality. The first of its kind 5,000 square-foot, eight-sided, three-story dome structure is located at F.H. Stoltz Land and Lumber in Columbia Falls, Montana. The concept behind the GPH™ is to generate power, but also to regenerate natural resources using carbon-negative technology.

"Imagine walking into a space filled with hanging gardens and diffused with dappled light, Eight shallow, wedge-shaped vats of algae comprise most of
the floor space in the main part of the building. "These algal raceway ponds are the photobioreactor," explained Smith, "the first of the three components of the
Green Power House that serves as essentially a biological solar cell."

"It's a closed-loop biorefinery," he said, "that is based on simple, longstanding, biological principals. It uses local algae, waste heat and wood waste to produce a unique and highly effective fertilizer that rejuvenates depleted soil."

A component of the “closed-loop” green network is eight algae raceway ponds that hold about 1500 gallons is what creates this algae microfarm. The algal channels produce energy-rich algae fueled by woody biomass – including wood waste from the mill, and also water, sunlight and carbon dioxide. Algae grow extremely fast and a pound of fresh algae can generate a 1,000 more btu’s than a pound of coal.

The harvested algae get pumped into photobioreactor tanks where it absorbs carbon dioxide and nitrous oxide generated from the Organic Carbon Engine™ (OCE).

The OCE also performs other functions. It gasifies wood chips and other wood waste using high heat to partially run the system, and then channels left-over energy to heat exchangers to regulate the photobioreactors and anaerobic bioreactor.

The algae then enter the second component, the anaerobic bioreactor which converts the algal biomass to methane and hydrogen gases, and algae ‘manure’ – a nutrient-rich concentrated substance. The gases produced can be converted into electricity and other forms of energy to power the mill.

The operation also generates a mix of biochar, the organic carbon created from pyrolysis of waste biomass and algae digestate which creates high-grade organic fertilizer and soil amendments.algae microfarming

Each AACT component utilizes a proprietary artificial intelligence system – Autonomic Networked Technology (ANT), and each integral part can work independently or together. These bioprocessors allow each component to adjust its performance imitating the workings of nature.

A half-acre of vertical algae micro farming to grow organic food could also be sustained in the atrium space of the greenhouse.

His Primary products are:

  • Organic Soil Fertility Conditioners/
  • Soil Regenerating Products

Secondary Products include:

  • Methane/Syngas
  • Greenhouse space for crops
  • Electricity-­‐250kWh of power can be produced continuously through the biorefinery.
  • Bio-­‐oils
  • Heat for industrial applications, such as drying kilns

The greenhouse also generates methane, bio-oils, syngas and thermal energy that can be utilized to run the greenhouse and power electricity.

Water is also recaptured through pyrolysis and utilized on site.

Here are some interesting facts relating to Green Power House™ facilities:

  • One GPH™ and one OCE together can produce 1250kW of energy continuously, or 6 MWh/day. This works out to $264,000 annual savings, based on a national average power rate of $0.12/kWHr.
  • Each GPH™ only uses 5kW per day to run, in comparison, the average American home consumes about 100 kW per day.
  • Conservatively one GPH™ can power 100 homes with electricity.

Here are several species of algae worth considering for small scale production:

  • Spirulina has been the most extensively harvested algae since the 1970s. For over 40 years thousands of tons of Spirulina have been marketed as dietary and nutritional supplements and feed supplements in aquaculture and poultry industries. Big commercial producers cultivate it in the USA, Mexico, China, Thailand, India and other countries, and there are numerous microfarms and algaepreneurs in Europe, Africa and Asia.
  • Chlorella is a single-cell, water-grown microalgae, and the first to be commercially harvested starting in the 1970s and sold as a food supplement. It is mainly cultivated outside in mineral-rich freshwater ponds under direct sunlight in Japan, China and Taiwan for global consumption. Chlorella is also commercially produced in closed pure tank culture systems using a fermentation process in Korea.
  • Dunaliella is a type of green micro-algae found in highly concentrated sea salt fields in places like Australia and Israel. It is commercially cultivated and sold as a food supplement for its beta carotene and anti-oxidant benefits. Dunaliella is produced different ways – from comprehensive low-technology in lagoons to high cell density industrial systems.
  • Haematococcus is raised in both open-air ponds and closed systems as the main source for Astaxanthin, a carotenoid pigment. Humans mainly consume it as an anti-oxidant food supplement. It is also used as a feed supplement for animal and aquaculture consumption like salmon, crabs, shrimp, chickens and egg production.
  • Schizochytrium are marine microalgae that produce rich nutrients and developed as a source of docosahexaenoic acid (DHA) – vegetable-like oil that contains an essential polyunsaturated fatty acid. DHA is also commercially grown from microalgae by fermentation in vats, and widely used as a food supplement in infant formulas, food, beverage and animal feed products.
  • Aphanizomenon flos-aquae are blue-green algae that use the available nitrogen during harvest season from Klamath Lake in Oregon, creating massive bloom of nutrient solution. Condensed tablets of powdered A. flos-aquae are sold as a dietary food supplement.
  • Botryococcus braunii is cultivated for the hydrocarbons it produces for conversion into algae biofuel.
  • Nannochloropsis is being developed for alga biofuel and the energy-rich nutritional food source omega-3 oil.

What Algae Aqua-Culture Technology and the GPH™ system has proven is that algae micro farming can function in all climates, create jobs, produce fuel, grow healthy soil and food for communities all over the world.

The "Algae Revolution" has begun

 

 

 

 

 

 

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  1. W.A.MILLER
    2 years ago

    A very informative article. I have been following the algae growing concept for years and I am excited how far it has come from when I first became interested. I have fifteen acres on the shore of an island in The Philippines. I am trying to figure out how I could produce algae there commercially. The Philippines has virtually no domestic oil for fuel. There would be a huge market in my humble opinion. If anyone has any ideas or suggestions on how best to do this or want to be involved: I’m listening.
    Sincerely,
    W. A. Miller
    Dolphin Sea Ranch
    Palawan, R.P.I.


    • admin
      2 years ago

      Thank you for the kind words. Sure, I’m interested. I even have a plan with minimum cost, maximum output, it will put people to work, create biofuels, vegetables, and fish, and within 3 years turn a profit of $55K-$65K per acre. Contact me offline (email) and we’ll see where it goes.

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Algae Biorefineries and Micro Farms

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