ИСТИНА

Humic derivatives are prepared and used to adhere to the surfaces of mineral media and other hydroxyl-carrying supports for cleaning the environment by selective sequestration of complex mixtures of contaminants possessing preferential affinity for natural or modified humic substances (HS). The sequestration of target components occurs as a result of their binding to dissolved humic derivatives that can be removed from the solution by adding any solid hydroxyl-carrying support (e.g., silica gel). Another method to sequester the target components from solution is their selective sorption onto humic derivatives immobilized onto solid support (e.g., silica gel). Yet another method involves using the humic derivatives to install a broad spectrum reactive barrier without excavation as an in situ passive remediation system.