Q62. With reference to Second generation Ethnol production, consider the following statements:

1. India’s first second generation ethnol bio refinery will be setup at Panipat in Punjab by HPCl.

2. They are produced directly from the food crops.

Which of the above statement(s) is/are correct?

  1. (a) Only 1

  2. (b) Only 2

  3. (c) Both 1 and 2

  4. (d) None of the above


The correct option is D

(d) None of the above

1. First Generation Biofuels: They are produced directly from food crops by abstracting the oils for use in biodiesel or producing bioethanol through fermentation. Crops such as wheat and sugar are the most widely used feedstock for bioethanol while rapeseed oil has proved a very effective crop for use in biodiesel.

2. Second Generation Biofuels: They are produced from non-food crops such as wood, organic waste, food crop waste and specific biomass crops, therefore eliminating the main problem with first generation biofuels. The common second generation biofuels are grasses like Switchgrass, Myscanthus, Indian grass etc.

3. Third Generation Biofuels: They are based on specially engineered energy crops such as algae as its energy source. The algae are cultured to act as a low-cost, high-energy and entirely renewable feedstock.

4. Fourth Generation Biofuels: They are aimed at not only producing sustainable energy but also a way of capturing and storing CO2. Biomass materials, which have absorbed CO2 while growing, are converted into fuel using the same processes as second generation biofuels. This process differs from second and third generation production as at all stages of production the carbon dioxide is captured using processes such as oxy-fuel combustion.

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