Coal power

[NeilBlanchard]

So, how does having dirtier coal make anything better?

Mercury poisoning is a huge problem, and most of it comes from burning coal.

Who has to live next to coal fly ash?

[oil pan 4]

How does having coal power make anything better?
Go turn off you homes main circuit breaker.
Let us know how much your quality of life improves.
You have solar panels so you have some power right?
(Actually I know your grid tie system is useless when the power goes out unless you have a sunny boy sps serries grid tie inverter)

The EPA states that 95% of coal plant Hg emissions have been eliminated since 2001.
So the Hg argument doesn't really exist any more.

[NeilBlanchard]

Originally Posted by oil pan 4

How does having coal power make anything better?
Go turn off you homes main circuit breaker.
Let us know how much your quality of life improves.
You have solar panels so you have some power right?
(Actually I know your grid tie system is useless when the power goes out unless you have a sunny boy sps serries grid tie inverter)

The EPA states that 95% of coal plant Hg emissions have been eliminated since 2001.
So the Hg argument doesn't really exist any more.

You left out the key word in my question - how does letting coal be DIRTIER make anything better?

[oil pan 4]

I never said dirtier is better.
Taking most the Hg and PM out of coal exhaust is good.

[NeilBlanchard]

What do we do with the massive amounts of coal fly ash?

[thingstodo]

Originally Posted by NeilBlanchard

What do we do with the massive amounts of coal fly ash?

Our power company (SaskPower) sells the flyash that they clean out of their boilers. It is used for filler in concrete that is less than 30 MPa ... I think.

Our redi-mix concrete companies have them 'sold out' of their expected production for the quarter. They don't 'pre-sell' the product any further in advance than that ... or at least that's how it worked last time I checked.

So far - no progress on the Clean Coal Capture project - to actually clean the CO2 out of the flue gas

[freebeard]

https://duckduckgo.com/?q=fly+ash+concrete

Use it as an amendment in concrete. As thingstodo said.

[oil pan 4]

Fly ash makes great concrete and asphalt.

Fly ash in concrete isn't just a filler. It's what's known as a pozzolanic cement. It chemically reacts with the quick lime in the cement just like the efflorescent cement.

Blends of efflorescent and pozzolanic cement make high strength concrete used to make roads, bridges, tall buildings, wind tubines, dams, waste waste water treatment ponds, ect.

[freebeard]

Vitruvius, writing around 25 BC in his Ten Books on Architecture, distinguished types of aggregate appropriate for the preparation of lime mortars. For structural mortars, he recommended pozzolana (pulvis puteolanus in Latin), the volcanic sand from the beds of Pozzuoli, which are brownish-yellow-gray in color in that area around Naples, and reddish-brown near Rome. Vitruvius specifies a ratio of 1 part lime to 3 parts pozzolana for cement used in buildings and a 1:2 ratio of lime to pozzolana for underwater work, essentially the same ratio mixed today for concrete used in marine locations.[4]

By the middle of the first century, the principles of underwater construction in concrete were well known to Roman builders. The city of Caesarea was the earliest known example to have made use of underwater Roman concrete technology on such a large scale.[5]

https://en.wikipedia.org/wiki/Roman_concrete

[aerohead]

Originally Posted by oil pan 4

I never said dirtier is better.
Taking most the Hg and PM out of coal exhaust is good.

Your right,it it's way better.
Hexavalent chromium is troubling some investigators,who'd like to see drinking water standards 5,000-times lower than regulations allow.
Coal ash/dumpsites are the largest source for it.What leaches into water supplies is nearly 100% hexavalent chromium,the most toxic form (carcinogen),whether breathed in as a dust or consumed when drinking.It's why people freaked during last year's hurricane/severe rain event flooding into the coal ash repositories,and subsequent release.(you can't put the genie back in the bottle)
Nasty!
Arsenic is an issue also,but I think that between scrubbers and electrostatic precipitators they catch all that.