17 responses

  1. Kunuthur Srinivasa Reddy
    August 12, 2012

    I wish the world nations are ranked for their carbon credits to create awareness among people to opt for the production and use of bioenergy to cause purity of environment and economic empowerment.


  2. Essam Hammad
    April 20, 2016

    important of COD and BOD through anaerobic digestion >>>>may explain pls


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