5 ms·

I like the idea in principle but I would love a more clear analysis of where the lead paint from old dismantled houses ends up. I wouldn't want to use mycelium

I like the idea in principle but I would love a more clear analysis of where the lead paint from old dismantled houses ends up. I wouldn't want to use mycelium bricks in my house, if I thought they were going to leach toxins into everything they touch...

bongodongobob 3y ago
Please explain how something as inert as lead "leaches".
- justrealist 3y ago
  It literally contaminates into the soil. This happens with all sorts of lead pipes, cables, etc. This is not me making things up, it's a huge concern when urban gardening.
  - Anotheroneagain 3y ago
    If somebody tells you that the vegetables from their garden taste 100 times better than those from the store, this is why.
- klyrs 3y ago
  Unless the lead is transmuted into something benign (spoiler: nope), one must account for where it's going.
- lightedman 3y ago
  Simple warm pH-imbalanced water is all you need. I can make cerrusite artificially with older lead-plumbed copper pipe and a moderate temperature (50C) pH-imbalanced hard water source, run that whole discharge through a water carbonation system and let the results evaporate under pressure. Bam. In a day I've leached lead out and crystallized it into another form that you would find in volcanic fields. Note: The leaching takes almost no time, the evaporation is the majority of time needed for forming the cerrusite. Lead is nowhere near as inert as you imagine it to be. It oxidizes readily.
  - hypercube33 3y ago
    I never see anyone mention plastic mini blinds when lead gets brought up but they use lead as a uv stabilizer and there were some studies showing it sheds the lead as a dust over time. I'm mobile otherwise I'd dig them up for links.
  - bongodongobob 3y ago
    So as long as you don't kick them it's fine.
- patmorgan23 3y ago
  If lead never leached into anything, I'm sure you won't have a problem with installing lead pipes in your home.
  - DonHopkins 3y ago
    Maybe he gets his dangerously false and ignorant opinions about science from Kansas Republican Attorney General Kris Kobach. Pete Buttigieg Schools Republican Who Claimed Lead Poisoning Is Just 'Speculative'. After Kansas Republican Attorney General Kris Kobach claimed studies about how lead is poisonous for humans are 'entirely speculative,' Buttigieg sounded off on X, formerly Twitter, to lay out some basic science. https://www.comicsands.com/buttigieg-schools-kobach-lead-poisoning-2667495901.html https://www.comicsands.com/buttigieg-schools-kobach-lead-poi... >"Biden wants to replace lead pipes. He failed to mention that the unfunded mandate sets an almost impossible timeline, will cost billions, infringe on the rights of the States and their residents – all for benefits that may be entirely speculative." -Kris Kobach, science denier >"The benefit of *not being lead poisoned* is not speculative. It is enormous. And because lead poisoning leads to irreversible cognitive harm, massive economic loss, and even higher crime rates, this work represents one of the best returns on public investment ever observed." -Secretary Pete Buttigieg, science schooler >Readers added context: Lead is a highly poisonous metal and can affect almost every organ in the body and the nervous system. CDC: Health Effects of Lead Exposure https://www.cdc.gov/nceh/lead/prevention/health-effects.htm https://www.cdc.gov/nceh/lead/prevention/health-effects.htm Mayo Clinic: Lead poisoning https://www.mayoclinic.org/diseases-conditions/lead-poisoning/symptoms-causes/syc-20354717 https://www.mayoclinic.org/diseases-conditions/lead-poisonin... >EPA estimates that lead in drinking water can be 20% or more of a person’s lead exposure. Clean Water Action: Lead and Drinking Water https://cleanwater.org/lead-and-drinking-water https://cleanwater.org/lead-and-drinking-water Study: More than 60% of Kansas, 80% of Missouri kids have lead in their blood. The findings of massive national study were published in JAMA Pediatrics this week. https://kansasreflector.com/2021/09/30/study-more-than-60-of-kansas-80-of-missouri-kids-have-lead-in-their-blood/ https://kansasreflector.com/2021/09/30/study-more-than-60-of... >KANSAS CITY, Mo. — Children in Kansas had elevated levels of lead in their blood at a greater rate than almost any other state, according to a massive national study published this week. >And more than 80% of Missouri children had some level of lead in their blood. >The study, authored by doctors at Boston Children’s Hospital and Quest Diagnostics, was published this week in JAMA Pediatrics, a peer-reviewed journal published by the American Medical Association. It included 1.1 million tests conducted by Quest Diagnostics nationwide between 2018 and 2020. >There is no safe level of lead in a child’s blood. Exposure to the metal can cause brain and nervous system damage, slow a child’s growth and development and lead to learning, behavior, hearing and speech problems. >But the study focused on both detectable blood lead levels, one microgram per deciliter, as well as elevated levels, 5 micrograms per deciliter. >In Missouri, 4.5% of children had elevated levels of lead in their blood. In Kansas, that figure was 2.6% of children, both far ahead of the 1.9% national average. >And the proportion of children with any detectable level of blood lead was higher in both states than the national average of about 50%. In Kansas 65% of kids had detectable levels of blood lead compared to 82% in Missouri. >According to the study, elevated blood levels were once ubiquitous but had fallen over the last 40 years because of policies limiting lead and eliminating it from gasoline, paint, plumbing pipes and consumer products. >But exposure is still possible and disproportionately affects children in families living at or below the poverty line, in older housing or communities with high concentrations of poverty. >“There has been significant progress in reducing lead exposure throughout the country,” the study says. “This study demonstrates, however, that there are still substantial individual-and community-level disparities that have important implications for addressing childhood lead exposure.” >Missouri and Kansas also have some of the highest numbers of lead service lines, the pipes running from water mains into homes and buildings, of any state. >Missouri ranked 6th for the most lead service lines — 4th if calculated per 100,000 residents. Kansas had the third most per capita. Kobach leads coalition demanding Biden drop "unnecessary" EPA rule that would require the replacement of more than 9 million lead pipes across the country. https://web.archive.org/web/20240308080847/https://ag.ks.gov/media-center/news-releases/2024/02/09/kobach-leads-coalition-demanding-biden-drop-unnecessary-epa-rule https://web.archive.org/web/20240308080847/https://ag.ks.gov... >“It sets an almost impossible timeline, will cost billions and will infringe on the rights of the States and their residents – all for benefits that may be entirely speculative,” the joint letter reads. Kris Kobach's foolishly false and dangerously ignorant letter to the EPA: https://web.archive.org/web/20240309085310/https://ag.ks.gov/docs/default-source/documents/comment-letter-to-epa-re-lead-and-copper-pipes---final.pdf?sfvrsn=7b11be1a_4 https://web.archive.org/web/20240309085310/https://ag.ks.gov... Kris Kobach leads effort to keep poisoning our drinking water. No one disputes that eliminating lead from drinking water is a needed but expensive undertaking. Rather than oppose the effort, the attorneys general should use their political influence to persuade their congressional delegations to fund it. https://www.iolaregister.com/opinion/columnists/kris-kobach-leads-effort-to-keep-poisoning-our-drinking-water https://www.iolaregister.com/opinion/columnists/kris-kobach-...
- adammarples 3y ago
  2Pb(s)+ O2(g) + 2H2O(l) -> 2 Pb(OH)2(s)
  - bongodongobob 3y ago
    And how is the lead from that brick going to get into your body? Brick licking?
    - ok_dad 3y ago
      Do you work for a lead mining company or something? We have better materials for nearly every use of lead which don’t cause any sort of poisoning. Why even take the risk?
dkbrk 3y ago
This is a good question and you shouldn't have been downvoted for it. I had a similar concern. I think the answer is this [0]: > Many fungi are hyperaccumulators, therefore they are able to concentrate toxins in their fruiting bodies for later removal. And the linked article alludes to that: > Heavy metals and other toxins are extracted and captured in the mushrooms that grow, while the substrate leftovers, including the mycelium, are compacted and heated to create clean bricks for new construction. Presumably they validate that the process results in the substrate having an acceptably low level of toxins before using it as material for new construction. [0]: https://en.wikipedia.org/wiki/Mycoremediation https://en.wikipedia.org/wiki/Mycoremediation

bongodongobob 3y ago

Please explain how something as inert as lead "leaches".

justrealist 3y ago
It literally contaminates into the soil. This happens with all sorts of lead pipes, cables, etc. This is not me making things up, it's a huge concern when urban gardening.
- Anotheroneagain 3y ago
  If somebody tells you that the vegetables from their garden taste 100 times better than those from the store, this is why.
klyrs 3y ago
Unless the lead is transmuted into something benign (spoiler: nope), one must account for where it's going.
lightedman 3y ago
Simple warm pH-imbalanced water is all you need. I can make cerrusite artificially with older lead-plumbed copper pipe and a moderate temperature (50C) pH-imbalanced hard water source, run that whole discharge through a water carbonation system and let the results evaporate under pressure. Bam. In a day I've leached lead out and crystallized it into another form that you would find in volcanic fields. Note: The leaching takes almost no time, the evaporation is the majority of time needed for forming the cerrusite. Lead is nowhere near as inert as you imagine it to be. It oxidizes readily.
- hypercube33 3y ago
  I never see anyone mention plastic mini blinds when lead gets brought up but they use lead as a uv stabilizer and there were some studies showing it sheds the lead as a dust over time. I'm mobile otherwise I'd dig them up for links.
- bongodongobob 3y ago
  So as long as you don't kick them it's fine.
patmorgan23 3y ago
If lead never leached into anything, I'm sure you won't have a problem with installing lead pipes in your home.
- DonHopkins 3y ago
  Maybe he gets his dangerously false and ignorant opinions about science from Kansas Republican Attorney General Kris Kobach. Pete Buttigieg Schools Republican Who Claimed Lead Poisoning Is Just 'Speculative'. After Kansas Republican Attorney General Kris Kobach claimed studies about how lead is poisonous for humans are 'entirely speculative,' Buttigieg sounded off on X, formerly Twitter, to lay out some basic science. https://www.comicsands.com/buttigieg-schools-kobach-lead-poisoning-2667495901.html https://www.comicsands.com/buttigieg-schools-kobach-lead-poi... >"Biden wants to replace lead pipes. He failed to mention that the unfunded mandate sets an almost impossible timeline, will cost billions, infringe on the rights of the States and their residents – all for benefits that may be entirely speculative." -Kris Kobach, science denier >"The benefit of *not being lead poisoned* is not speculative. It is enormous. And because lead poisoning leads to irreversible cognitive harm, massive economic loss, and even higher crime rates, this work represents one of the best returns on public investment ever observed." -Secretary Pete Buttigieg, science schooler >Readers added context: Lead is a highly poisonous metal and can affect almost every organ in the body and the nervous system. CDC: Health Effects of Lead Exposure https://www.cdc.gov/nceh/lead/prevention/health-effects.htm https://www.cdc.gov/nceh/lead/prevention/health-effects.htm Mayo Clinic: Lead poisoning https://www.mayoclinic.org/diseases-conditions/lead-poisoning/symptoms-causes/syc-20354717 https://www.mayoclinic.org/diseases-conditions/lead-poisonin... >EPA estimates that lead in drinking water can be 20% or more of a person’s lead exposure. Clean Water Action: Lead and Drinking Water https://cleanwater.org/lead-and-drinking-water https://cleanwater.org/lead-and-drinking-water Study: More than 60% of Kansas, 80% of Missouri kids have lead in their blood. The findings of massive national study were published in JAMA Pediatrics this week. https://kansasreflector.com/2021/09/30/study-more-than-60-of-kansas-80-of-missouri-kids-have-lead-in-their-blood/ https://kansasreflector.com/2021/09/30/study-more-than-60-of... >KANSAS CITY, Mo. — Children in Kansas had elevated levels of lead in their blood at a greater rate than almost any other state, according to a massive national study published this week. >And more than 80% of Missouri children had some level of lead in their blood. >The study, authored by doctors at Boston Children’s Hospital and Quest Diagnostics, was published this week in JAMA Pediatrics, a peer-reviewed journal published by the American Medical Association. It included 1.1 million tests conducted by Quest Diagnostics nationwide between 2018 and 2020. >There is no safe level of lead in a child’s blood. Exposure to the metal can cause brain and nervous system damage, slow a child’s growth and development and lead to learning, behavior, hearing and speech problems. >But the study focused on both detectable blood lead levels, one microgram per deciliter, as well as elevated levels, 5 micrograms per deciliter. >In Missouri, 4.5% of children had elevated levels of lead in their blood. In Kansas, that figure was 2.6% of children, both far ahead of the 1.9% national average. >And the proportion of children with any detectable level of blood lead was higher in both states than the national average of about 50%. In Kansas 65% of kids had detectable levels of blood lead compared to 82% in Missouri. >According to the study, elevated blood levels were once ubiquitous but had fallen over the last 40 years because of policies limiting lead and eliminating it from gasoline, paint, plumbing pipes and consumer products. >But exposure is still possible and disproportionately affects children in families living at or below the poverty line, in older housing or communities with high concentrations of poverty. >“There has been significant progress in reducing lead exposure throughout the country,” the study says. “This study demonstrates, however, that there are still substantial individual-and community-level disparities that have important implications for addressing childhood lead exposure.” >Missouri and Kansas also have some of the highest numbers of lead service lines, the pipes running from water mains into homes and buildings, of any state. >Missouri ranked 6th for the most lead service lines — 4th if calculated per 100,000 residents. Kansas had the third most per capita. Kobach leads coalition demanding Biden drop "unnecessary" EPA rule that would require the replacement of more than 9 million lead pipes across the country. https://web.archive.org/web/20240308080847/https://ag.ks.gov/media-center/news-releases/2024/02/09/kobach-leads-coalition-demanding-biden-drop-unnecessary-epa-rule https://web.archive.org/web/20240308080847/https://ag.ks.gov... >“It sets an almost impossible timeline, will cost billions and will infringe on the rights of the States and their residents – all for benefits that may be entirely speculative,” the joint letter reads. Kris Kobach's foolishly false and dangerously ignorant letter to the EPA: https://web.archive.org/web/20240309085310/https://ag.ks.gov/docs/default-source/documents/comment-letter-to-epa-re-lead-and-copper-pipes---final.pdf?sfvrsn=7b11be1a_4 https://web.archive.org/web/20240309085310/https://ag.ks.gov... Kris Kobach leads effort to keep poisoning our drinking water. No one disputes that eliminating lead from drinking water is a needed but expensive undertaking. Rather than oppose the effort, the attorneys general should use their political influence to persuade their congressional delegations to fund it. https://www.iolaregister.com/opinion/columnists/kris-kobach-leads-effort-to-keep-poisoning-our-drinking-water https://www.iolaregister.com/opinion/columnists/kris-kobach-...
adammarples 3y ago
2Pb(s)+ O2(g) + 2H2O(l) -> 2 Pb(OH)2(s)
- bongodongobob 3y ago
  And how is the lead from that brick going to get into your body? Brick licking?
  - ok_dad 3y ago
    Do you work for a lead mining company or something? We have better materials for nearly every use of lead which don’t cause any sort of poisoning. Why even take the risk?

dkbrk 3y ago

This is a good question and you shouldn't have been downvoted for it. I had a similar concern. I think the answer is this [0]: > Many fungi are hyperaccumulators, therefore they are able to concentrate toxins in their fruiting bodies for later removal. And the linked article alludes to that: > Heavy metals and other toxins are extracted and captured in the mushrooms that grow, while the substrate leftovers, including the mycelium, are compacted and heated to create clean bricks for new construction. Presumably they validate that the process results in the substrate having an acceptably low level of toxins before using it as material for new construction. [0]: https://en.wikipedia.org/wiki/Mycoremediation https://en.wikipedia.org/wiki/Mycoremediation