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|Proven phosphorus retention||May harm plants<ref>Logsdon SD, Sauer PA. Iron Filings Cement Engineered Soil Mix. Agron J. 2016;108(4):1753. doi:10.2134/agronj2015.0427.</ref>
|Proven phosphorus retention||May harm plants<ref>Logsdon SD, Sauer PA. Iron Filings Cement Engineered Soil Mix. Agron J. 2016;108(4):1753. doi:10.2134/agronj2015.0427.</ref>
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![[Red sand]]
![[Red sand]]
|Proven phosphorus retention||?
|Proven phosphorus retention||?
![[Water treatment residuals]]
![[Water treatment residuals]]
|Waste product reuse||Quality control
|Waste product reuse||Quality control
|}
==References==
==References==
<em><references/></em>
<em><references/></em>
[[category: materials]]
[[category: materials]]