Monday, August 28, 2017

Firewood and Charcoal - World's most popular fuels

Dr Abe V Rotor
Living with Nature - School on Blog 

Firewood and charcoal are still the most popular fuels for cooking in the world. In fact they constitute at least 80 percent of rural households, and even in urban centers, they are preferred for specific uses such as pugon in making pandesal, and barbecue and broiling and roasting. Alternative sources of fuel have lately gained attention in the light of dwindling supply of fossil fuel and increasing cost of electricity, among them is charcoal.

For my students in Earth Science with Ecology: This is your assignment. I also invite followers and viewers of this blog. Write down the advantages of using charcoal. On the opposite side of your paper, write down its disadvantages. Which one weighs more? Write an essay of around 200 words, "To use or not to use charcoal, that's the question."

Truckloads of charcoal at Commonwealth Market, Manggahan QC.

Charcoal is the black residue consisting of impure carbon obtained by removing water and other volatile constituents from animal and vegetation substances. Charcoal is usually produced by slow pyrolysis, the heating of wood, sugar, bone char, or other substances in the absence of oxygen. The resulting soft, brittle, lightweight, black, porous material resembles coal and is 50% to 95% carbon with the remainder consisting of volatile chemicals and ash.

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