Abstract:
본 발명은 강우량 및 지하수위 변동에 따라 깊이가 변동되는 불포화대를 모사함에 있어서 지반모사장치의 길이가 선택적으로 조절되도록 함과 다양한 지점에서의 유체 유출입 및 특성평가가 가능하도록 함으로써 불포화대의 물리화학적 특성 및 생물학적 특성을 정확하게 평가할 수 있는 불포화대 지반모사장치에 관한 것으로서, 본 발명에 따른 불포화대 지반모사장치는 수직방향을 따라 배열, 결합되어 불포화대를 모사하는 상단 컬럼부, 중단 컬럼부 및 하단 컬럼부를 포함하여 이루어지며, 상기 중단 컬럼부는 복수개의 단위 컬럼으로 구성되며, 중단 컬럼부를 구성하는 단위 컬럼의 개수 조절을 통해 지반모사장치와 불포화대의 길이를 축척상 일치시킬 수 있으며, 각각의 단위 컬럼 내에 불포화대의 깊이 방향에 따른 성상을 반영한 지반을 모사하는 것을 특징으로 한다.
Abstract:
본 발명은 나노영가철(nZVI) 표면에 지질층(脂質層, lipids)을 구비시킴으로써 나노영가철(nZVI) 표면에 산화막이 형성되는 것을 방지함과 함께 유기오염물질의 흡착특성을 향상시킬 수 있는 지질층을 구비한 나노영가철 및 그 제조방법에 관한 것으로서, 본 발명에 따른 지질층을 구비한 나노영가철은 나노영가철; 및 상기 나노영가철 표면에 구비되며, 상기 나노영가철과 킬레이트 결합을 이루는 지질층을 포함하여 이루어지는 것을 특징으로 하며, 상기 지질층은 카르복실산을 포함하는 물질이며, 올레인산 또는 트리올레인산으로 구성될 수 있다.
Abstract:
The present invention relates to an alginate-based composite carrier containing nano zero-valent iron and lipids. Nano zero-valent iron (nZVI) in an alginate bead is solidified so that the nano zero-valent iron (nZVI) is prevented from being agglomerated. Through the combination of the nano zero-valent iron (nZVI) and lipids, it is prevented that an oxide film is formed on the surface of the nano zero-valent iron (nZVI), and adsorption properties of organic contaminants can be improved. The alginate-based composite carrier according to the present invention comprises: a spherical alginate bead; a nano zero-valent iron fixed in the alginate bead; and a lipid layer which is formed in the alginate bead and bonded with the surface of the nano zero-valent iron.
Abstract:
The present invention relates to nano zero-valent iron, a composite media having a liquid-based core-shell structure and a method for preparing the same in which nano zero-valent iron is provided on a core region, and hydrophobic lipid is provided on a core-shell region to suppress oxide film formation by hydrophilic inorganic ions. Organic matter is prevented from being deposited on a surface of the nano zero-valent iron to suppress a reduction in reactivity of the nano zero-valent iron, and selective reactivity with respect to a hydrophobic chlorinated organic compound is increased to improve a decomposition characteristic of a specific chlorinated organic compound. A method for preparing nano zero-valent iron and a composite media having a liquid-based core-shell structure is characterized by comprising the steps of: preparing an alginate solution in which the nano zero-valent iron is dispersed; dropping into a curing solution to cure the alginate solution, to thus prepare a first alginate bead in which the nano zero-valent iron is immobilized; introducing the first alginate bead into to form a solution layer on a surface of the first alginate bead; and dropping the first alginate bead on which the solution layer is formed into the curing solution to cure the first alginate bead in a second alginate bead shape, and thus prepare a composite media comprised of a core region that is comprised of the first alginate bead, and a shell region that is comprised of the second alginate bead formed on the surface of the first alginate bead.
Abstract:
The present invention relates to zero-valent iron including lipids and a manufacturing method thereof. The present invention can prevent the formation of an oxide membrane on the surface of nanosize zero-valent iron (nZVI) by placing lipids on the surface of the nanosize zero-valent iron (nZVI), and can improve the adsorption of organic pollutants. The nanosize zero-valent iron including lipids according to the present invention comprises nanosize zero-valent iron; and lipids arranged on the surface of the nanosize zero-valent iron and chelated by the nanosize zero-valent iron. The lipids are materials including carboxylic acids and may be composed of oleic acid or trioleic acid.