Difference between revisions of "Engineered (bioretention) media organic material properties and specifications"
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<tr> | <tr> | ||
<td>Phosphorus leaching</td> | <td>Phosphorus leaching</td> | ||
| − | <td>No</td> | + | <td>No [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Effect_of_biochar_on_retention_and_fate_of_phosphorus]</td> |
<td>No to slight</td> | <td>No to slight</td> | ||
<td></td> | <td></td> | ||
| Line 21: | Line 21: | ||
<tr> | <tr> | ||
<td>Phosphorus retention</td> | <td>Phosphorus retention</td> | ||
| − | <td>No to slight</td> | + | <td>No to slight [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Effect_of_biochar_on_retention_and_fate_of_phosphorus]</td> |
<td>No</td> | <td>No</td> | ||
<td></td> | <td></td> | ||
| Line 29: | Line 29: | ||
<tr> | <tr> | ||
<td>Handling concerns</td> | <td>Handling concerns</td> | ||
| − | <td>Potential explosive concerns in closed space situations; volatile compounds (depending on pyrolysis temperature)</td> | + | <td>Potential explosive concerns in closed space situations; volatile compounds (depending on pyrolysis temperature) [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Storage.2C_handling.2C_and_field_application]</td> |
<td>Dust</td> | <td>Dust</td> | ||
<td></td> | <td></td> | ||
| Line 37: | Line 37: | ||
<tr> | <tr> | ||
<td>Soil hydraulic properties</td> | <td>Soil hydraulic properties</td> | ||
| − | <td>Significant improvement</td> | + | <td>Significant improvement [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Chemical-physical_properties_of_biochar]</td> |
<td>Significant improvement</td> | <td>Significant improvement</td> | ||
<td></td> | <td></td> | ||
| Line 44: | Line 44: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Soil physical properties</td> | + | <td>Soil physical properties [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Chemical-physical_properties_of_biochar]</td> |
<td>Significant improvement</td> | <td>Significant improvement</td> | ||
<td>Moderate improvement</td> | <td>Moderate improvement</td> | ||
| Line 52: | Line 52: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Plant effects</td> | + | <td>Plant/microbial effects</td> |
| − | <td>Beneficial but varies with feedstock</td> | + | <td>Beneficial but varies with feedstock [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Effects_of_biochar_on_soil_fertility.2C_plant_growth.2C_and_microbial_function]</td> |
<td>Beneficial</td> | <td>Beneficial</td> | ||
<td></td> | <td></td> | ||
| Line 61: | Line 61: | ||
<tr> | <tr> | ||
<td>Availability</td> | <td>Availability</td> | ||
| − | <td>Multiple distributors</td> | + | <td>Multiple distributors [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Distributors]</td> |
<td>Widely available</td> | <td>Widely available</td> | ||
<td></td> | <td></td> | ||
| Line 68: | Line 68: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Specifications available</td> | + | <td>Specifications/standards available</td> |
| − | <td>Limited due to variability with feedstocks</td> | + | <td>Limited due to variability with feedstocks [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Standards.2C_classification.2C_testing.2C_and_distributors]</td> |
<td>Yes</td> | <td>Yes</td> | ||
<td></td> | <td></td> | ||
| Line 101: | Line 101: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Chemical | + | <td>Chemical properties</td> |
<td>[https://stormwater.pca.state.mn.us/index.php?title=Chemical_and_physical_properties_of_biochar]</td> | <td>[https://stormwater.pca.state.mn.us/index.php?title=Chemical_and_physical_properties_of_biochar]</td> | ||
<td>[https://stormwater.pca.state.mn.us/index.php?title=Chemical_and_physical_properties_of_coir]</td> | <td>[https://stormwater.pca.state.mn.us/index.php?title=Chemical_and_physical_properties_of_coir]</td> | ||
| Line 110: | Line 110: | ||
<tr> | <tr> | ||
<td>Sustainability</td> | <td>Sustainability</td> | ||
| − | <td>Sustainable, but has current market constraints</td> | + | <td>Sustainable, but has current market constraints [https://stormwater.pca.state.mn.us/index.php?title=Biochar_and_applications_of_biochar_in_stormwater_management#Sustainability]</td> |
<td>Sustainable</td> | <td>Sustainable</td> | ||
<td></td> | <td></td> | ||
Revision as of 13:18, 22 April 2020
Engineered (bioretention) media organic material properties and specifications.
Link to this table
| Property | Biochar | Coir | Compost | Peat | Wood chips |
|---|---|---|---|---|---|
| Phosphorus leaching | No [1] | No to slight | |||
| Phosphorus retention | No to slight [2] | No | |||
| Handling concerns | Potential explosive concerns in closed space situations; volatile compounds (depending on pyrolysis temperature) [3] | Dust | |||
| Soil hydraulic properties | Significant improvement [4] | Significant improvement | |||
| Soil physical properties [5] | Significant improvement | Moderate improvement | |||
| Plant/microbial effects | Beneficial but varies with feedstock [6] | Beneficial | |||
| Availability | Multiple distributors [7] | Widely available | |||
| Specifications/standards available | Limited due to variability with feedstocks [8] | Yes | |||
| Cost | |||||
| Research needs | Feedstocks suitable for stormwater applications | Phosphorus fate in stormwater applications | |||
| Applications | [9] | [10] | |||
| Chemical properties | [11] | [12] | |||
| Sustainability | Sustainable, but has current market constraints [13] | Sustainable | |||
| Potential contaminants | Minor risk - metals and polycyclic aromatic hydrocarbons (PAHs) | Low risk - possible chloride depending on preparation method | |||
| Test methods | Not standardized but International Biochar Initiative widely used [14] | Not standardized but multiple methods available [15] | |||
| Effects of aging/Life expectancy | Varies with production method [16] | Decomposes slowly unless nutrients are added [17] | |||
| Notes | Characteristics vary with feedstock and pyrolysis temperature | Coir must be composted or incorporated with compost, lime, fertilizer, and/or microbes |