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Dominions of fizz: the carbonated-drinks industry and public health [pdf]
161–170 of 218 posts
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#162Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#163Earlier quoted context omitted.
How would desalination cost water? You vaporize water, catch and cool it back to water, and there you go. The cost here is energy, which varies greatly depending on the sun.
Unclear how much you know about the topic, but there are a number of ways to desalinate salt water, including just mixing non-toxic saltwater with drinkable freshwater; that said, it requires 31 liters of freshwater to make one liter of saltwater drinkable. Normal saltwater has a salt concentration of 3.5% and to be drinkable that must be reduced to 1000 ppm (parts per million); which is to say, say for 100 liters of…
When you need 31 galles of freshwater to make 1 gallon salt water drinkable, you have 32 gallons of drinkable water. Those 32 gallons are not wasted. When you make one jeans or a t-shirt, you may need many more gallons. You cannot drink that water afterwards, so that totally different.
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#164>340 to 620 litres I amused myself trying to find the source. The article is based from a quote from the book which is based on a study: The green, blue and grey water footprint of crops and derived crop products, Twente Water Centre http://waterfootprint.org/media/downloads/Mekonnen-Hoekstra-... I think he is for example counting the rain and irrigation water that falls on the sugar cane that it used to make the Cok…
The large majority of the water used (2/3) is for 'green water', AKA rainfall. If the rainfall wasn't used by the sugar cane, it would probably have been used by another plant occupying almost exactly the same ecological niche. Blue water is groundwater (1/4) and you may be able to say the same thing about it. Some blue water comes from underground acquifiers, so pumping may be bad thing if you're pumping faster than…
Adding some corn facts, as it's how most American soda is sweetened.
90% of the land area used for growing corn is not irrigated (100% green water) and in this case it's no trade off. It's not irrigated because there is adequate rainfall.
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#165Earlier quoted context omitted.
Besides which, that water isn't lost; in the Netherlands, it either sinks into the soil to eventually become ground water again (after which it's reused), or it ends up in the sea via canals and rivers. It's not like we have a water shortage in NL, not yet anyway. Besides ground water, there are several rivers passing through NL coming from the Alps, sometimes to the point of overflowing. Really, the only thing waste…
Scientifically-speaking, is any water "lost"? Thinking back to those pictures of plains and mountains with a big circular arrow in my seventh grade science textbook: couldn't you say that even the water used by crops, turned into coke, and consumed by humans is eventually returned the ecosystem in some form or another?
Water vapor is lost to the vacuum of space, though it's obviously not enough to make a perceptible difference, at least on a human scale.
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#166Earlier quoted context omitted.
Scientifically-speaking, is any water "lost"? Thinking back to those pictures of plains and mountains with a big circular arrow in my seventh grade science textbook: couldn't you say that even the water used by crops, turned into coke, and consumed by humans is eventually returned the ecosystem in some form or another?
Water vapor is lost to the vacuum of space, though it's obviously not enough to make a perceptible difference, at least on a human scale.
...and replenished from space through slushball comets!
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#167Earlier quoted context omitted.
The large majority of the water used (2/3) is for 'green water', AKA rainfall. If the rainfall wasn't used by the sugar cane, it would probably have been used by another plant occupying almost exactly the same ecological niche. Blue water is groundwater (1/4) and you may be able to say the same thing about it. Some blue water comes from underground acquifiers, so pumping may be bad thing if you're pumping faster than…
Adding some corn facts, as it's how most American soda is sweetened. 90% of the land area used for growing corn is not irrigated (100% green water) and in this case it's no trade off. It's not irrigated because there is adequate rainfall.
Right! Here in Iowa we water the corn the way God intended, by waiting for it to fall from the sky for free. I can always tell when flying to CA when I get into Nebraska, those huge 'crop circles' formed by irrigation start to show up.
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#168Earlier quoted context omitted.
Unclear how much you know about the topic, but there are a number of ways to desalinate salt water, including just mixing non-toxic saltwater with drinkable freshwater; that said, it requires 31 liters of freshwater to make one liter of saltwater drinkable. Normal saltwater has a salt concentration of 3.5% and to be drinkable that must be reduced to 1000 ppm (parts per million); which is to say, say for 100 liters of…
When you need 31 galles of freshwater to make 1 gallon salt water drinkable, you have 32 gallons of drinkable water. Those 32 gallons are not wasted. When you make one jeans or a t-shirt, you may need many more gallons. You cannot drink that water afterwards, so that totally different.
Reference to using freshwater for desalination has nothing to due with waste, but to make the point that boiling saltwater is only one of many ways to desalinate saltwater.
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#169Earlier quoted context omitted.
The large majority of the water used (2/3) is for 'green water', AKA rainfall. If the rainfall wasn't used by the sugar cane, it would probably have been used by another plant occupying almost exactly the same ecological niche. Blue water is groundwater (1/4) and you may be able to say the same thing about it. Some blue water comes from underground acquifiers, so pumping may be bad thing if you're pumping faster than…
Adding some corn facts, as it's how most American soda is sweetened. 90% of the land area used for growing corn is not irrigated (100% green water) and in this case it's no trade off. It's not irrigated because there is adequate rainfall.
It's not 100% green water since the fertilizer usage will contaminate some runoff, making some water "grey".
Re: Dominions of fizz: the carbonated-drinks industry and public health [pdf]
#170Earlier quoted context omitted.
We "use" water so poorly for agriculture and cities. I lived in Imperial Valley California. They have an open canal through a very dry desert for 100 miles. The canal is made of porous concrete that leaks along the way. It is then used in the farms to produce what I was told is the majority of America's lettuces and vegetables. They LOVE farming out here since there is virtually no rain or weather events to complicat…
http://www.treehugger.com/green-food/from-lettuce-to-beef-wh... Answered my own Lettuce -- 15 gallons Chocolate (One Pound) -- 2847 gallons!!!!!
Where the lettuce has 70 calories and the chocolate has 2500. So about a 5:1 difference in efficiency.