Agricultural reuse of foundry sand

Foundries continually generate large quantities of excess sand that has the potential to be beneficially reused outside of the foundry industry with only about 10% of the total reused primarily for construction purposes. Potential agricultural applications reviewed are as an in situ addition to agricultural soils, use in greenhouse potting or container mixes, as an ingredient in topsoil blends used for landscaping or reclamation purposes, or in rooting zones for sports turf applications. Several studies focused on risk assessment and regulatory guidelines. Use of foundry sand was compared to more commonly used materials like native soil, and composted yard waste.