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  • Kriben has started a new project twertwertwtt 6 years ago

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    in Organic Textiles

  • http://www.sciencedirect.com/science/book/9780444595584

    in Biomass Power Production Biodiesel Algae Fuels Biomass to Liquid Oil and Cleantech Agri Waste Management Plastic Management Anaerobic Digestion of Waste Rainwater Harvesting Organic Textiles Trains and Cleantech Regulations, Policies and Incentives Biotechnology

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  • Hello!

    I want to ask if someone could give me some basic informations about the production of plastic from biomass in general? Books , websites... everything!

    Thanks!

    in Renewable Chemicals

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  • LED bulbs are expensive but will save money in the long run. - http://pogue.blogs.nytimes.com/2012/04/04/an-ode-to-the-led-bulb/

    in LED

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  • I have done much research online into determining the ideal spectrum for growing algae. My goal is to custom-tune an LED fixture for maximum algae growth and maximum filtration capacity. So far, I have not been able to verify whether Algae best utilizes the Chlorophyll A or B spectrums, or a combination of both.

    I build algae scrubber for freshwater and marine aquariums. The algae is grown on a vertical substrate with the system water constantly cascading over it, and illuminated on both sides. So far, the vast majority of people grow the algae with low-kelvin (2700-3500K) CFL or T5HO with great success. LED builds have been all over the board, but some evidence suggest that algae (at least, marine algae) responds best to 660nm "deep red". Thus the limited data would seem to indicate that marine algae (green hair algae, in specific) absorbs mainly the Chlorophyll "A" specturn.

    Adversely, the horticulture industry reports that plants respond much better to the equivalent wattage (input) of 630nm. Growth of plants under 630s far exceeds growth under 660s. The theoretical explanation is that 630nm LEDs output 3x the power of 660nm LEDs, and that the difference is mainly the result of intensity trumping spectrum.

    The "A" finding is also compounded by the apparent total lack of algae growth under warm white LEDs supplemented with 455/460nm LEDs ("B" peak in Blue). The lack of correct red component may be partially to blame, so this is only anecdotal.

    I am currently preparing to run an experiment with 2 separate fixtures, one tuned to the "A" spectrum, and another tuned to the "B" spectrum. The experiment will be performed on 2 separate uninhabited saltwater system with fertilizer mixed in the water, essentially creating waste water or runoff water.

    I would greatly appreciate any insight from anyone who has attempted to grow algae using artificial LED light. I posted a similar request on Oilgae and got zippo for response.

    in LED

    • View all 12 answers
    • Johann 5 years ago

      At Hort Americas we work with GreenPower LED products. One product which has captured the attention of algae research at the University of Kentucky is our Deep Red/ Blue Production Module. They have been very impressed with its performance on algae production. Contact me if you wish to know more. Cheers, Johann

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  • With the industry’s support and despite political opposition, new U.S. lighting efficiency standards went into effect. This move, along with similar actions in Europe and China, is helping spur new technologies that will change the way the world's homes and businesses are illuminated.

    Read More: http://e360.yale.edu/feature/building_a_better_bulb_lighting_revolution_advances/2487/

    in LED

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  • A multi-year study in UK social housing developments found that LED lightbulbs made residents feel safer and more content. Energy and maintenance savi - http://www.smartplanet.com/blog/intelligent-energy/study-led-lightbulbs-make-people-feel-safer/11457?tag=nl.e660

    in LED

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  • A sustainable bio-degradable alternative to plastic packaging has been developed by Gurgaon-based Roidec India Chemicals Pvt Ltd, the company said Tuesday. - http://green.in.msn.com/cleantechnologies/article.aspx?cp-documentid=5567147

    in Renewable Chemicals

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  • Besides secreting oil, microalgae also produce compounds to protect themselves against environmental injuries like too much sunlight or lack of moisture. As it happens, human skin deals with those same insults every day, and we're always looking for products that can help us in that fight—which is one reason why the global cosmetics industry is worth more than $40 billion.

    - http://ecocentric.blogs.time.com/2011/10/28/why-the-future-of-skincare-may-be-algae/

    in Eco Cosmetics

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  • Company using grape waste to make oils, lotions - http://www.wasterecyclingnews.com/rss2.html?id=1318001673

    These are exciting developments...not only do they find a useful avenue for using waste, they also make a renewable, sustainable and more healthy chemical from that...

    Are there other prominent fruit wastes from which renewable chemicals, cosmetics etc could be made?

    in Agri Waste Management Renewable Chemicals Eco Cosmetics

    • Kyzyl 5 years ago

      They are not the first. The first is Teins Inc. But they are good fellows.

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