Difference between revisions of "Soil pollutant"
(basic article) |
(article extension & clean-up) |
||
| Line 7: | Line 7: | ||
=== Near term POPs === | === Near term POPs === | ||
| − | * | + | * In medicine there is a desire for drugs that won't be degraded to fast in the (human) body. While Drugs never will be produced in high volumes (construction industry scale) their hormone like effect of other life down the waste-water drain can be significantly detrimental. |
| − | * | + | * Artificial foldamers like peptoids tend to be less degradable than natural foldamers like peptides (~=proteins) since the natural degradation tool-chain may not be capable to deal with the new stuff. {{todo|link video}} |
| − | + | ||
=== Far term POPs === | === Far term POPs === | ||
| − | A wide range of potentially useful small environmentally | + | A wide range of potentially useful small environmentally persistent molecules for which there are currently no synthesis pathways known that make high volume production economically feasible will emerge. |
| + | Spill must be minimized and dependent of the ration of unavoidable spill to degradation speed it might be necessary to attempt active collection which introduces a host of new dangers. See: "[[Mobility prevention guideline]]". | ||
== Elemental == | == Elemental == | ||
| Line 21: | Line 21: | ||
Metals that are today used for: | Metals that are today used for: | ||
* oxidation protection | * oxidation protection | ||
| − | * | + | * electrochemical batteries |
| − | * | + | * catalysts |
| − | * | + | * mechanical strength improvement |
All can be be avoided. | All can be be avoided. | ||
A view properties like very high density of mass remain only creatable by special elements. | A view properties like very high density of mass remain only creatable by special elements. | ||
| − | For high density of mass there can be used: | + | For high density of mass there can be e.g. used: |
* abundant and thus cheap but poisonous lead | * abundant and thus cheap but poisonous lead | ||
* less abundant and thus more expensive but less toxic bismuth | * less abundant and thus more expensive but less toxic bismuth | ||
| − | Usage of potentially poisonous elements can be made pretty safe by enclosing them in very durable ( | + | Usage of potentially poisonous elements can be made pretty safe by enclosing them in very durable (non-poisonous) micro-capsules (e.g. made of diamond or moissanite). Such micro-capsules need to be tightly anchored to the parent macroscopic product with strategies to prevent fine grained break-off. See "[[mobility prevention guideline]]" for details. |
| + | |||
| + | === Remediation of existing elemental pollution === | ||
| + | |||
| + | * lead | ||
| + | * bauxite mud | ||
| + | * aluminium salts | ||
| + | * highly concentrated lowly radioactive elements | ||
| + | * lowly concentrated highly radioactive elements | ||
| + | |||
| + | == Related == | ||
| + | |||
| + | * recovery of scarce elements from waste heaps | ||
Revision as of 10:17, 30 January 2016
Contents
Organic
Both nearer term and more advances atomically precise manufacturing can introduce new kinds of potentially dangerous persistent organic pollutants (POPs).
Near term POPs
- In medicine there is a desire for drugs that won't be degraded to fast in the (human) body. While Drugs never will be produced in high volumes (construction industry scale) their hormone like effect of other life down the waste-water drain can be significantly detrimental.
- Artificial foldamers like peptoids tend to be less degradable than natural foldamers like peptides (~=proteins) since the natural degradation tool-chain may not be capable to deal with the new stuff. (TODO: link video)
Far term POPs
A wide range of potentially useful small environmentally persistent molecules for which there are currently no synthesis pathways known that make high volume production economically feasible will emerge. Spill must be minimized and dependent of the ration of unavoidable spill to degradation speed it might be necessary to attempt active collection which introduces a host of new dangers. See: "Mobility prevention guideline".
Elemental
Future products will be able to avoid the use many poisonous metals almost completely since advanced metamaterials made entirely from non-poisonous elements can emulate many material properties that today can only be archived by heavy usage of those potentially poisonous metals.
Metals that are today used for:
- oxidation protection
- electrochemical batteries
- catalysts
- mechanical strength improvement
All can be be avoided.
A view properties like very high density of mass remain only creatable by special elements. For high density of mass there can be e.g. used:
- abundant and thus cheap but poisonous lead
- less abundant and thus more expensive but less toxic bismuth
Usage of potentially poisonous elements can be made pretty safe by enclosing them in very durable (non-poisonous) micro-capsules (e.g. made of diamond or moissanite). Such micro-capsules need to be tightly anchored to the parent macroscopic product with strategies to prevent fine grained break-off. See "mobility prevention guideline" for details.
Remediation of existing elemental pollution
- lead
- bauxite mud
- aluminium salts
- highly concentrated lowly radioactive elements
- lowly concentrated highly radioactive elements
Related
- recovery of scarce elements from waste heaps
