Mon Nov 27, 2006 7:52 pm
Mon Nov 27, 2006 8:53 pm
Mon Nov 27, 2006 10:12 pm
Mon Nov 27, 2006 10:16 pm
Mon Nov 27, 2006 11:58 pm
Tue Nov 28, 2006 12:06 am
400lbsonacubseatspring wrote:Firstly, if we follow the concept, the parts to be cleaned lose mass, whereas, the electrodes we are using as anodes actually gain mass......none of the stainless is dissolved by process of electrolysis
If you have a city sewerage system, I do believe it would be quite safe to dump your efflux from stainless annodes right down the drain. The concentrations (if any are present) would not be of any serious level.
No one wants chromium of any type in their groundwater, however, so dumping it onto open soil, or into your septic system is probably not a good idea.
Tue Nov 28, 2006 1:11 am
Donny M wrote:Racing and hunting madden the mind, Tom. In your case maybe it's this electrolysis thread
Tue Nov 28, 2006 1:42 am
Chromium metal and chromium(III) compounds are not usually considered health hazards, but hexavalent chromium (chromium VI) compounds can be toxic if orally ingested or inhaled. The lethal dose of poisonous chromium (VI) compounds is about one half teaspoon of material. Most chromium (VI) compounds are irritating to eyes, skin and mucous membranes. Chronic exposure to chromium (VI) compounds can cause permanent eye injury, unless properly treated. Chromium(VI) is an established human carcinogen. An investigation into hexavalent chromium release into drinking water formed the plot of the motion picture Erin Brockovich.
World Health Organization recommended maximum allowable concentration in drinking water for chromium (VI) is 0.05 milligrams per liter.
As chromium compounds were used in dyes and paints and the tanning of leather, these compounds are often found in soil and groundwater at abandoned industrial site, now needing environmental cleanup and remediation per the treatment of brownfield land. Primer paint containing hexavalent chromium is still widely used for aerospace and automobile refinishing applications.
Trivalent chromium (Cr(III), or Cr3+) is required in trace amounts for sugar metabolism in humans, and its deficiency can cause chromium deficiency.
The metal chromium, which is the chromium(0) form, is used for making steel. Chromium(VI) and chromium(III) are used for chrome plating, dyes and pigments, leather tanning, and wood preserving.
hexavalent chromium is given off when stainless steel is cast, welded, or torch cut
Tue Nov 28, 2006 1:54 pm
Tue Nov 28, 2006 3:08 pm
Tue Nov 28, 2006 8:30 pm
Tue Nov 28, 2006 9:01 pm
Tue Nov 28, 2006 9:24 pm
400lbsonacubseatspring wrote:Here is a link, which evidently states unequivocally that stainless does NOT contain hexavalent chromium....
And Jim, you obviously have a different definition of groundwater than I do....either that, or it must be common in your area to pump sewer treatment facility efflux into deep wells.
And yes, treatment facilities are "supposed" to test water for heavy metals, including chromium, and deal with it appropriately. Considering the vast number of communities that still have lead in their soil piping, lead is a serious concern for many in my area. Lead treatment is very common here, as is mercury, and several others.
Efflux from municipal sewer treatment plants in this part of Pennsylvania must exit to streams and rivers, which, ultimately, I do not consider to be "ground water"....... If we did not treat for lead and other metals, the soil piping in the centuries-old homes from Northeastern PA would absolutely pollute the Susquehanna, and ultimately the Chesapeake.
Tue Nov 28, 2006 11:15 pm
Mike in NC wrote:Now you all have me really nervous. I don't use stainless for my "cooker", but the part about chains that have been chromed appears to be a problem. I use the cheap but shiny chains that you buy in hardware stores to hold my parts in the tub. I use them cause they don't rust. 1. Are these chromed? 2. Am I killing myself by using these chains to attach my negative charger cable to?
Another unhappy thought - these old tractors were originally painted with lead paint. When we dump the electrolyte as "fertilizer" are we dumping lead into our ground water? Geez guys, if we keep this up I'm going back to scraping the rust off.
Your thoughts are always appreciated.
Wed Nov 29, 2006 12:39 am
Jim Becker wrote:Where do you think ground water comes from?? the tooth fairy?? Maybe you should check on your local ground water:
There is nothing that does not become easier with familiarity.
Not wishing to suffer the full weight of great harm,
is it not better to become familiar with small harms,
So that when greater harm comes, it will be easier?
A student of Aristotle was told by his master to go out among the people of the world for 3 years, and each time someone insulted him, he was to pay them, then return to Athens.
Finally, his task was completed. At the gates of Athens, was an old man, insulting every person who entered the city. When the student approached the old man, the old man insulted him. The student began laughing hysterically.
"Why do you laugh, when I have just insulted you?" asked the old man.
"Well, for 3 years, I've been paying for this sort of thing, and you've just given it to me for free!!"