Controlled release remediation system and composition

B - Operations – Transporting – 09 – C

Patent

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B09C 1/08 (2006.01)

Patent

CA 2703051

A controlled release remediation composition or compositions, a method making such composition(s), a method of using such composition(s), and a remediation system including such composition(s) are disclosed. The disclosed controlled release remediation composition or compositions include at least one chemical oxidant agent, optionally, at least two chemical oxidant agents; at least one encapsulant polymer; and, optionally, at least one matrix polymer. The disclosed controlled release remediation composition or compositions are capable of substantially constantly releasing an amount of the at least one chemical oxidant agent, optionally, amounts of the at least two chemical oxidant agents, for example, into an aqueous system such as may be found at a contaminated site, over at least about a one month period up to over about a three month period.

La présente invention concerne une ou plusieurs compositions de remédiation à libération contrôlée, un procédé permettant de fabriquer cette ou ces compositions, un procédé permettant d'utiliser cette ou ces compositions, et un système de remédiation comprenant cette ou ces compositions. La ou les compositions de remédiation à libération contrôlée décrites comprennent au moins un agent oxydant chimique, facultativement, au moins deux agents oxydants chimiques; au moins un polymère encapsulant; et, facultativement, au moins un polymère matriciel. La ou les compositions de remédiation à libération contrôlée décrites sont capables de libérer de façon sensiblement régulière une quantité du ou des agents oxydants chimiques, facultativement, des quantités des deux agents oxydants chimiques ou plus, par exemple, dans un système aqueux que l'on peut trouver dans un site contaminé, sur une période allant d'au moins un mois à trois mois.

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