Limestone Buffered Organic Substrate (LBOS) is typically used for passive treatment of shallow groundwater, mine waste, and coal pile ash ponds. LBOS is a propriety blend of limestone, compost material, and gypsum which is formulated for the chemistry onsite and can remove almost any metal contaminant.
The LBOS system generates its own alkalinity and can be used ex-situ or as an in-situ barrier for shallow groundwater. As with MMATS®, no additional energy or power is required and metals are precipitated out as metal sulfides. The system is cost-effective and long-lasting and is capable of protecting environmental habitats, ensuring groundwater security, and providing substantial cost savings for mining companies faced with mine waste problems at active or abandoned mine sites.