Revisions for sandbox-soil-remediation
| 5 CURRENT | bhamster |
March 16, 2021 22:58
| about 3 years ago
Soil remediation involves cleaning up polluted soils. There are many different ways to reduce exposure to contaminated soils, and remediation methods vary in how effective they are and how much they actually reduce the problem or simply move the problem from one place to another.
What’s on this page:
Please contribute to the resources and discussion by editing this wiki page or adding and answering questions below! You can also follow along and get updates on this topic by subscribing to QuestionsQuestions from the Public Lab community tagged with [questions:soil-remediation] ActivitiesActivities on Public Lab tagged with [activities:soil-remediation] Approaches for remediating contaminated soilRemediation approaches are tailored to each site and situation. Different approaches could be combined at the same time or used one after another. Some factors that will affect which remediation approaches are most appropriate for a site:
BioremediationHow bioremediation methods work: Bioremediation methods use living things, like plants, fungi, and bacteria, to help reduce soil contamination. Some plants grown in contaminated soil can take up heavy metals into their roots and leaves, removing them from the soil. Some fungi and bacteria can break down organic contaminants in the soil into less toxic compounds. For a comprehensive introduction to bioremediation, check out this excellent Bioremediation for Urban Gardeners factsheet created by @DanielleS with the Healing City Soils program out of BC, Canada. The factsheet covers: what bioremediation is, kinds of bioremediation and how they work on different contaminants, a list of plants for phytoremediation (bioremediation using plants), and a decision tree to determine if phytoremediation is right for your site. Plus much more. Most of the information in this section is informed by this fantastic factsheet. Some different strategies: Phytoremediation with living plantsImage: Diagram of a plant taking up heavy metals. Rona.fawzy19, CC BY SA Phytoremediation involves growing certain plants in soils containing heavy metals. The plants take up the metals into their tissues as they grow, removing them from the soil over time. This particular process is phytoextraction.
(From the Bioremediation for Urban Gardeners factsheet) Mycoremediation with fungi/mushrooms and bioremediation with bacteriaInvolves growing certain fungi or bacteria in soils contaminated with organic compounds, like petroleum products and polycyclic aromatic hydrocarbons (PAHs). The fungi and bacteria break down the organic compounds into less toxic ones.
(From the Bioremediation for Urban Gardeners factsheet)
IMPORTANT NOTE!
Plants or fungi that have taken up soil contaminants need to be removed and disposed of safely. It may be hazardous waste if contaminant levels are high. The bioremediation factsheet linked above lists some options for disposal.
Examples of projects:
Additional resources:
Physical methods for soil remediationHow physical methods work: Physical methods reduce exposure to contaminants at a site by removing soil, broadly blocking access to it, or physically separating or trapping contaminants. Some different strategies: ExcavationExcavation involves digging up contaminated soil and moving it to a landfill or treating it offsite.
Capping / EncapsulationThis method involves placing a physical barrier over contaminated soil to contain the contamination.
Thermal desorptionThis method removes hydrocarbon contamination (like petroleum products) by heating soil in a specialized low-temperature dryer. The heat evaporates the hydrocarbons off the soil, and then they’re collected and treated separately.
Examples of projects:
Additional resources:
Chemical treatmentsHow chemical methods work: Uses specific chemicals added to the soil to reduce contamination. The chemicals bind to contaminants so they’re stabilized in place, potentially making removal easier. Or, the added chemicals break down contaminants into less toxic substances. Some different strategies: Chemical fixationThis chemical method treats soils contaminated with organic compounds or heavy metals using additives that attach to the contaminants. For metals, these chemical additives may be “chelating agents.”
Chemical oxidationSpecific chemicals are added to the soil, where they react with pollutants and turn the pollutants into less toxic compounds.
Examples of projects:
Additional resources:
How do you know remediation is working?@DanielleS explains in a comment here that there are different ways to evaluate if remediation is working:
Further reading and resourcesHere are some more general resources, in addition to the ones listed above for different kinds of remediation methods
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| 4 | bhamster |
March 12, 2021 21:37
| about 3 years ago
Soil remediation involves cleaning up polluted soils. There are many different ways to reduce exposure to contaminated soils, and remediation methods vary in how effective they are and how much they actually reduce the problem or simply move the problem from one place to another.
What’s on this page:
Please contribute to the resources and discussion by editing this wiki page or adding and answering questions below! You can also follow along and get updates on this topic by subscribing to QuestionsQuestions from the Public Lab community tagged with [questions:soil-remediation] ActivitiesActivities on Public Lab tagged with [activities:soil-remediation] Approaches for remediating contaminated soilRemediation approaches are tailored to each site and situation. Different approaches could be combined at the same time or used one after another. Some factors that will affect which remediation approaches are most appropriate for a site:
BioremediationHow bioremediation methods work: Bioremediation methods use living things, like plants, fungi, and bacteria, to help reduce soil contamination. Some plants grown in contaminated soil can take up heavy metals into their roots and leaves, removing them from the soil. Some fungi and bacteria can break down organic contaminants in the soil into less toxic compounds. For a comprehensive introduction to bioremediation, check out this excellent Bioremediation for Urban Gardeners factsheet created by @DanielleS with the Healing City Soils program out of BC, Canada. The factsheet covers: what bioremediation is, kinds of bioremediation and how they work on different contaminants, a list of plants for phytoremediation (bioremediation using plants), and a decision tree to determine if phytoremediation is right for your site. Plus much more. Most of the information in this section is informed by this fantastic factsheet. Some different strategies: Phytoremediation with living plantsImage: Diagram of a plant taking up heavy metals. Rona.fawzy19, CC BY SA Phytoremediation involves growing certain plants in soils containing heavy metals. The plants take up the metals into their tissues as they grow, removing them from the soil over time. This particular process is phytoextraction.
(From the Bioremediation for Urban Gardeners factsheet) Mycoremediation with fungi/mushrooms and bioremediation with bacteriaInvolves growing certain fungi or bacteria in soils contaminated with organic compounds, like petroleum products and polycyclic aromatic hydrocarbons (PAHs). The fungi and bacteria break down the organic compounds into less toxic ones.
(From the Bioremediation for Urban Gardeners factsheet)
IMPORTANT NOTE!
Plants or fungi that have taken up soil contaminants need to be removed and disposed of safely. It may be hazardous waste if contaminant levels are high. The bioremediation factsheet linked above lists some options for disposal.
Examples of projects:
Additional resources:
Physical methods for soil remediationHow physical methods work: Physical methods reduce exposure to contaminants at a site by removing soil, broadly blocking access to it, or physically separating or trapping contaminants. Some different strategies: ExcavationExcavation involves digging up contaminated soil and moving it to a landfill or treating it offsite.
Capping / EncapsulationThis method involves placing a physical barrier over contaminated soil to contain the contamination.
Thermal desorptionThis method removes hydrocarbon contamination (like petroleum products) by heating soil in a specialized low-temperature dryer. The heat evaporates the hydrocarbons off the soil, and then they’re collected and treated separately.
Examples of projects: Additional resources:
Chemical treatmentsHow chemical methods work: Uses specific chemicals to reduce contamination by binding to contaminants so they can be removed more effectively or breaking down contaminants into less toxic substances. Some different strategies: Chemical fixationThis chemical method treats soils contaminated with organic compounds or heavy metals using additives that attach to the contaminants.
Chemical oxidationSpecific chemicals are added to the soil, where they react with pollutants and turn the pollutants into less toxic compounds.
Examples of projects: Additional resources:
How do you know remediation is working?@DanielleS explains in a comment here that there are different ways to evaluate if remediation is working:
Further reading and resourcesHere are some more general resources, in addition to the ones listed above for different kinds of remediation methods
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| 3 | bhamster |
March 12, 2021 21:00
| about 3 years ago
Soil remediation involves cleaning up polluted soils. There are many different ways to reduce exposure to contaminated soils, and remediation methods vary in how effective they are and how much they actually reduce the problem or simply move the problem from one place to another.
What’s on this page:
Please contribute to the resources and discussion by editing this wiki page or adding and answering questions below! You can also follow along and get updates on this topic by subscribing to QuestionsQuestions from the Public Lab community tagged with [questions:soil-remediation] ActivitiesActivities on Public Lab tagged with [activities:soil-remediation] Approaches for remediating contaminated soilRemediation approaches are tailored to each site and situation. Different approaches could be combined at the same time or used one after another. Some factors that will affect which remediation approaches are most appropriate for a site:
BioremediationHow bioremediation methods work: Bioremediation methods use living things, like plants, fungi, and bacteria, to help reduce soil contamination. Some plants grown in contaminated soil can take up heavy metals into their roots and leaves, removing them from the soil. Some fungi and bacteria can break down organic contaminants in the soil into less toxic compounds. For a comprehensive introduction to bioremediation, check out this excellent Bioremediation for Urban Gardeners factsheet created by @DanielleS with the Healing City Soils program out of BC, Canada. The factsheet covers: what bioremediation is, kinds of bioremediation and how they work on different contaminants, a list of plants for phytoremediation (bioremediation using plants), and a decision tree to determine if phytoremediation is right for your site. Plus much more. Most of the information in this section is informed by this fantastic factsheet. Some different strategies: Phytoremediation with living plantsImage: Diagram of a plant taking up heavy metals. Rona.fawzy19, CC BY SA Phytoremediation involves growing certain plants in soils containing heavy metals. The plants take up the metals into their tissues as they grow, removing them from the soil over time. This particular process is phytoextraction.
(From the Bioremediation for Urban Gardeners factsheet) Mycoremediation with fungi/mushrooms and bioremediation with bacteriaInvolves growing certain fungi or bacteria in soils contaminated with organic compounds, like petroleum products and polycyclic aromatic hydrocarbons (PAHs). The fungi and bacteria break down the organic compounds into less toxic ones.
(From the Bioremediation for Urban Gardeners factsheet)
IMPORTANT NOTE!
Plants or fungi that have taken up soil contaminants need to be removed and disposed of safely. It may be hazardous waste if contaminant levels are high. The bioremediation factsheet linked above lists some options for disposal.
Examples of projects:
Additional resources:
Physical methods for soil remediationHow physical methods work: Physical methods reduce exposure to contaminants at a site by removing soil, broadly blocking access to it, or physically separating or trapping contaminants. Some different strategies: ExcavationExcavation involves digging up contaminated soil and moving it to a landfill or treating it offsite.
Capping / EncapsulationThis method involves placing a physical barrier over contaminated soil to contain the contamination.
Thermal desorptionThis method removes hydrocarbon contamination (like petroleum products) by heating soil in a specialized low-temperature dryer. The heat evaporates the hydrocarbons off the soil, and then they’re collected and treated separately.
Examples of projects: Additional resources:
Chemical treatmentsHow chemical methods work: Uses specific chemicals to reduce contamination by binding to contaminants so they can be removed more effectively or breaking down contaminants into less toxic substances. Some different strategies: Examples of projects: Additional resources:
How do you know remediation is working? |
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| 2 | bhamster |
March 12, 2021 20:35
| about 3 years ago
Soil remediation involves cleaning up polluted soils. There are many different ways to reduce exposure to contaminated soils, and remediation methods vary in how effective they are and how much they actually reduce the problem or simply move the problem from one place to another.
What’s on this page:
Please contribute to the resources and discussion by editing this wiki page or adding and answering questions below! You can also follow along and get updates on this topic by subscribing to QuestionsQuestions from the Public Lab community tagged with [questions:soil-remediation] ActivitiesActivities on Public Lab tagged with [activities:soil-remediation] Approaches for remediating contaminated soilRemediation approaches are tailored to each site and situation. Different approaches could be combined at the same time or used one after another. Some factors that will affect which remediation approaches are most appropriate for a site:
BioremediationHow bioremediation methods work: Bioremediation methods use living things, like plants, fungi, and bacteria, to help reduce soil contamination. Some plants grown in contaminated soil can take up heavy metals into their roots and leaves, removing them from the soil. Some fungi and bacteria can break down organic contaminants in the soil into less toxic compounds. For a comprehensive introduction to bioremediation, check out this excellent Bioremediation for Urban Gardeners factsheet created by @DanielleS with the Healing City Soils program out of BC, Canada. The factsheet covers: what bioremediation is, kinds of bioremediation and how they work on different contaminants, a list of plants for phytoremediation (bioremediation using plants), and a decision tree to determine if phytoremediation is right for your site. Plus much more. Most of the information in this section is informed by this fantastic factsheet. Some different strategies: Phytoremediation with living plantsImage: Diagram of a plant taking up heavy metals. Rona.fawzy19, CC BY SA Phytoremediation involves growing certain plants in soils containing heavy metals. The plants take up the metals into their tissues as they grow, removing them from the soil over time. This particular process is phytoextraction.
(From the Bioremediation for Urban Gardeners factsheet) Mycoremediation with fungi/mushrooms and bioremediation with bacteriaInvolves growing certain fungi or bacteria in soils contaminated with organic compounds, like petroleum products and polycyclic aromatic hydrocarbons (PAHs). The fungi and bacteria break down the organic compounds into less toxic ones. “...more research is needed so that protocols for community-scale myco- and bioremediation can be applied safely and effectively to repair contaminated soils.” (From the Bioremediation for Urban Gardeners factsheet)
**IMPORTANT NOTE!**
Plants or fungi that have taken up soil contaminants need to be removed and disposed of safely. It may be hazardous waste if contaminant levels are high. The bioremediation factsheet linked above lists some options for disposal.
Examples of projects:
Additional resources:
Physical methods for soil remediationHow physical methods work: Physical methods reduce exposure to contaminants at a site by removing soil, broadly blocking access to it, or physically separating or trapping contaminants. Some different strategies: ExcavationExcavation involves digging up contaminated soil and moving it to a landfill or treating it offsite.
Capping / EncapsulationThis method involves placing a physical barrier over contaminated soil and covering the barrier with clean topsoil.
Thermal desorptionThis method removes hydrocarbon contamination (like petroleum products) by heating soil in a specialized low-temperature dryer. The heat evaporates the hydrocarbons off the soil, and then they’re collected and treated separately.
Examples of projects: Additional resources:
Chemical treatmentsHow chemical methods work: Uses specific chemicals to reduce contamination by binding to contaminants so they can be removed more effectively or breaking down contaminants into less toxic substances. Some different strategies: Examples of projects: Additional resources:
How do you know remediation is working? |
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| 1 | bhamster |
March 12, 2021 19:33
| about 3 years ago
Soil remediation involves cleaning up polluted soils. There are many different ways to reduce exposure to contaminated soils, and remediation methods vary in how effective they are and how much they actually reduce the problem or simply move the problem from one place to another.
What’s on this page:
Please contribute to the resources and discussion by editing this wiki page or adding and answering questions below! You can also follow along and get updates on this topic by subscribing to QuestionsQuestions from the Public Lab community tagged with [questions:soil-remediation] ActivitiesActivities on Public Lab tagged with [activities:soil-remediation] Approaches for remediating contaminated soilRemediation approaches are tailored to each site and situation. Different approaches could be combined at the same time or used one after another. Some factors that will affect which remediation approaches are most appropriate for a site:
BioremediationHow bioremediation methods work: Bioremediation methods use living things, like plants, fungi, and bacteria, to help reduce soil contamination. Some plants grown in contaminated soil can take up heavy metals into their roots and leaves, removing them from the soil. Some fungi and bacteria can break down organic contaminants in the soil into less toxic compounds. For a comprehensive introduction to bioremediation, check out this excellent Bioremediation for Urban Gardeners factsheet created by @DanielleS with the Healing City Soils program out of BC, Canada. The factsheet covers: what bioremediation is, kinds of bioremediation and how they work on different contaminants, a list of plants for phytoremediation (bioremediation using plants), and a decision tree to determine if phytoremediation is right for your site. Plus much more. Most of the information in this section is informed by this fantastic factsheet. Some different strategies: Phytoremediation with living plantsImage: Diagram of a plant taking up heavy metals. Rona.fawzy19, CC BY SA Phytoremediation involves growing certain plants in soils containing heavy metals. The plants take up the metals into their tissues as they grow, removing them from the soil over time. This particular process is phytoextraction. |
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| 0 | bhamster |
March 12, 2021 19:32
| about 3 years ago
Soil remediation involves cleaning up polluted soils. There are many different ways to reduce exposure to contaminated soils, and remediation methods vary in how effective they are and how much they actually reduce the problem or simply move the problem from one place to another.
What’s on this page:
Please contribute to the resources and discussion by editing this wiki page or adding and answering questions below! You can also follow along and get updates on this topic by subscribing to QuestionsQuestions from the Public Lab community tagged with [questions:soil-remediation] ActivitiesActivities on Public Lab tagged with [activities:soil-remediation] Approaches for remediating contaminated soilRemediation approaches are tailored to each site and situation. Different approaches could be combined at the same time or used one after another. Some factors that will affect which remediation approaches are most appropriate for a site:
BioremediationHow bioremediation methods work: Bioremediation methods use living things, like plants, fungi, and bacteria, to help reduce soil contamination. Some plants grown in contaminated soil can take up heavy metals into their roots and leaves, removing them from the soil. Some fungi and bacteria can break down organic contaminants in the soil into less toxic compounds. For a comprehensive introduction to bioremediation, check out this excellent Bioremediation for Urban Gardeners factsheet created by @DanielleS with the Healing City Soils program out of BC, Canada. The factsheet covers: what bioremediation is, kinds of bioremediation and how they work on different contaminants, a list of plants for phytoremediation (bioremediation using plants), and a decision tree to determine if phytoremediation is right for your site. Plus much more. Most of the information in this section is informed by this fantastic factsheet. Some different strategies: Phytoremediation with living plantsImage: Diagram of a plant taking up heavy metals. Rona.fawzy19, CC BY SA Phytoremediation involves growing certain plants in soils containing heavy metals. The plants take up the metals into their tissues as they grow, removing them from the soil over time. This particular process is phytoextraction. |
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