Author Topic: Acid rain  (Read 4809 times)

RSJK

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Acid rain
« on: January 08, 2006, 13:55:39 »
I was thinking today (dangerous thing to do) about all this talk about global warming, and got to thinking whatever happen to Acid rain which was such a hot subject a few years ago but now never mentioned.

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Derekthefox

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Re: Acid rain
« Reply #1 on: January 08, 2006, 16:33:52 »
I don't have access to environmental data, Richard, but I believe one of the major culprits was vehicle exhaust emissions, which have been reduced through catalytic converters, and improved diesel engines ...

terrace max

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Re: Acid rain
« Reply #2 on: January 08, 2006, 16:50:01 »
I think the answer is in your question RK.

As the evidence for global warming has become indisputable - and a political battleground too - the media have lost interest in the effects of acid rain.

To be fair, global warming could be the end of the (human) world as we know it; acid rain just sterilises thousands of boring lakes in Northern Europe and dissolves a few architectural antiquities elsewhere.... :-\

From memory, I think industrial sulphur emissions from coal burning also contributes to the formation of acid rain...
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redimp

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Re: Acid rain
« Reply #3 on: January 08, 2006, 16:55:20 »
There is discussion regarding the acidity of water in water butts - one of the reputed causes being acid rain.  Don't know whether its effects are as bad as they once were.  I suppose blight might be able to help here as s/he (sorry blight) lives in the black forest area as does another German contributor (Blackforest Dan?) I think.
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Re: Acid rain
« Reply #4 on: January 08, 2006, 17:05:12 »
I think you're spot on, Richard. I remember learning this as a fairly major topic at school, think it was caused by sulphur dioxide and nitrogen blasted into the atmosphere from us wonderful industrial nations, and raining down as sulphuric and nitric acid, esp around Scandinavian forests and lakes. What the state of play is now, I don't know...

terrace max

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Re: Acid rain
« Reply #5 on: January 08, 2006, 17:10:52 »
Some FAQs answered:

Quote
What is acid rain?
Acid precipitation, also known as acid rain includes acid snow, hail and fog.
The reason that is called acid precipitation is because anything that consists
of water that falls or settles contains acid but it is more commonly know as
acid rain. Acid rain consists of sulphur and nitrogen and when these two are
combined with water it basically turns into a more acidic rain.

How has acid rain occurred?

Acid rain has occurred from pollution that has risen into the environment and
reached our cloud hence forming acid rain. When the rain falls it contains acid
in it. The sulphur and nitrogen that mainly contribute to the acid rain and
these come from us polluting the air which then reaches the clouds. This
pollution mainly comes from the burning of fossil fuels which are coal, gas
and oil. The pollution also comes from our cars. Where it comes out of the
exhausts of our cars it then rises into the atmosphere which then reacts with
the water in the clouds to create the acid rain. The demand for electricity
and cars means that there is a lot of bad substances that are going into our
atmosphere and this is a major contributing factor of acid rain. The difficulty
is that just because we may have a lot of air pollution in our country, the
pollution tends to drift off in the wind to other parts of the world that may
not be so polluted. This means that all parts of the world are affected and not
just the areas that have more pollution. The worst areas that cause acid rain
are Europe and North America. This is because these are more developed countries
and so therefore we have more money to pay for electricity and cars but generally
the areas that are affected the worst by acid rain are the tropical forest as
well as rivers and lakes. Acid rain can also affect buildings that are made out
of certain materials. Acid rain is quickening up the process of erosion which
means that our buildings and land will wear away a lot sooner than expected.
The acidity in the rain is often measured and is measured using a scale called
the pH scale. On the pH scale, 7 is neutral whereas anything from 0 – 6 is
acidic and anything from 8 – 14 is alkaline. The worst measurement of acid rain
to be made is pH 2.

Will acid rain continue?

There are measures that are being carried out to try and prevent some of the
damage that the acid rain is causing but as long as pollution is there acid
rain will continue. Acid rain is mainly a result of air pollution and this is
all caused by humans.

What is being done to prevent acid rain?

There are measures that are being carried out by the government and the
Environment Agency to prevent the damage of acid rain but also work it
slowly being done to prevent acid rain itself. The government are trying
to invest in different ways of producing energy alternatively. These
include electric cars, and producing electricity through different forms
of methods other than by burning fossil fuels. It is a slow process but
the research is currently being done into various alternatives.



What can we do to prevent acid rain?

Even the simplest of things can be carried out by us to help to try to prevent
acid rain from getting worse. We can share driving to work and walk to the
local shops rather than drive. We can ask the children to get the school
bus into school rather than drive them so that this can reduce the amount
of fuel being burnt. Even turning our lights off and electrical appliances
off when we are not using them will help because the local power station
will be burning less fuel for every less bit of energy we use.

What are the possible long term effects from acid rain?   

The long term effects from the damage of acid rain are that we can loose our
tropical rainforests and our wildlife too. Whenever any acid rain is getting
into our rivers, streams and lakes, some of the fish may be killed or harmed
which means that the birds will be affected because they have no fish to eat.
In the extreme cases (which could happen long term) some of breeds of fish and
birds could become extinct purely so that we can have our electricity. The less
trees and plants that we have, the less of our carbon dioxide in our pollution
can be photosynthesised because of the plants and trees that we will have killed.
« Last Edit: January 08, 2006, 17:15:20 by terrace max »
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Robert_Brenchley

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Re: Acid rain
« Reply #6 on: January 08, 2006, 21:25:27 »
I think closing down or improving coal-fired power stations mitigated it enough to knock it off the headlines, but acidification of lakes goes back to the Industrial Revolution, and it won't go away till pollution does.

Zippy Seale

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Re: Acid rain
« Reply #7 on: January 09, 2006, 18:43:13 »
We hear so much about greenhouse gases and there effects, I dont deny there must be some effect, however rome wasn't built in a day, never does the Earth react that quick to changes, The effects that are being seen today, with Ozone depletion, CO2 levels rising, have started to peak now, so it wasn't the last 50yrs of man's activity that have caused this, It stems back to the 1770's and the start of the Industrial Revolution. More Hydro-carbons were burnt in the following 100 yrs than any other time during history. Quick note, a ship transporting 3000 Volvo's for the American market burns more Hydro-Carbons than the sum of the cars running 20 yrs! Acid rain caused by Sulphur dioxide mixing with water, is caused by man, the northern Jet stream carries the chemicals over the Alantic, till it reaches the polar stream, around the British Isles andScandanavia. It becomes rain and presto, rotten pine forests. However, the damage peaked in the 80's from 85-89, and then fell off, this was thought to be man cleaning up his act, sorry wrong. More Sulphur-dioxide was released in the Mount St Helens eruption than man could produce in 300 yrs! Coincidence? could be, So when Pinatubo erupted in 1991, the gases were analysed and the amount calulated. More CO2 and SO2 was released into the atmosphere in 1 month than man has released in his entire history!
Damage by acid rain has been monitored and again peaked and fell within the 10 yrs that followed the eruption.

Man has caused damage, but mother nature, bless her does more.
they say it wouldn't grow.....ha

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terrace max

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Re: Acid rain
« Reply #8 on: January 09, 2006, 19:55:11 »
Quote
Scientists have calculated that volcanoes emit between about 130-230 million tonnes (145-255 million tons) of CO2 into the atmosphere every year (Gerlach, 1999, 1992). This estimate includes both subaerial and submarine volcanoes, about in equal amounts. Emissions of CO2 by human activities, including fossil fuel burning, cement production, and gas flaring, amount to about 22 billion tonnes per year (24 billion tons). Human activities release more than 150 times the amount of CO2 emitted by volcanoes--the equivalent of nearly 17,000 additional volcanoes like Kilauea (Kilauea emits about 13.2 million tonnes/year)!

Sorry Celtic Grower but you should employ at least a pinch of salt when you listen to climate change deniers...

[Source: U.S. Geological Survey]

« Last Edit: January 09, 2006, 20:00:35 by terrace max »
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Robert_Brenchley

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Re: Acid rain
« Reply #9 on: January 09, 2006, 21:05:49 »
I remember a conversation about ten years ago with one of the government's advisers on climate change; he showed me this ultra-secret report which the UN (I think) had just produced. Could the Gulf Stream fail? mens bits! Was sea level rising? How can we tell, with the crust rising in one place and falling in another. When he wanted, the guy suffered from selective amnesia, and forgot what a mean was. With a background in geology, I know exactly what nonsense is uttered, and you wouldn't believe it.

Robert_Brenchley

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Re: Acid rain
« Reply #10 on: January 09, 2006, 21:06:45 »
I didn't write 'men's bits', incidentally. I meant the bits that have been cut off bullocks. Change one letter.

terrace max

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Re: Acid rain
« Reply #11 on: January 09, 2006, 21:14:57 »
The Gulf Stream has, apparently, slowed down by 30% in the last 50 years...

http://www.newscientist.com/article.ns?id=dn8398
« Last Edit: January 09, 2006, 21:24:36 by terrace max »
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Svea

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Re: Acid rain
« Reply #12 on: January 09, 2006, 21:22:49 »
it's painfully clear that slugs and whitefly will happily live without human intervention :-/
Gardening in SE17 since 2005 ;)

terrace max

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Re: Acid rain
« Reply #13 on: January 09, 2006, 21:25:04 »
Some are already in government!
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Zippy Seale

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Re: Acid rain
« Reply #14 on: January 10, 2006, 21:18:42 »
Quote
Scientists have calculated that volcanoes emit between about 130-230 million tonnes (145-255 million tons) of CO2 into the atmosphere every year (Gerlach, 1999, 1992). This estimate includes both subaerial and submarine volcanoes, about in equal amounts. Emissions of CO2 by human activities, including fossil fuel burning, cement production, and gas flaring, amount to about 22 billion tonnes per year (24 billion tons). Human activities release more than 150 times the amount of CO2 emitted by volcanoes--the equivalent of nearly 17,000 additional volcanoes like Kilauea (Kilauea emits about 13.2 million tonnes/year)!

Sorry Celtic Grower but you should employ at least a pinch of salt when you listen to climate change deniers...

[Source: U.S. Geological Survey]



first SO2 is responsible for acid rain.  you didnt mention SO2 which is the point I was referring to.  and the levels monitored was done by ESA - european space agaency and BGS.
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Robert_Brenchley

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Re: Acid rain
« Reply #15 on: January 10, 2006, 21:33:18 »
I don't think SO2 was ever a really universal problem. It was certainly a European problem due to our SO2 poisoning Scandinavian forests.

Nathan

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Re: Acid rain
« Reply #16 on: January 10, 2006, 21:41:03 »
Quick note, a ship transporting 3000 Volvo's for the American market burns more Hydro-Carbons than the sum of the cars running 20 yrs!


I have come across this claim before, and it seems so extremely unlikely that I've done my own calculations.

These show that if the American Volvo drivers use the same amount of fuel per year as me, (not much) the 3000 cars over 20 years will use 108 000 000 litres of fuel.  This is enough to keep a large ship sailing steadily for at least 4 years!
Nathan

 

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