Abstract:
There is disclosed a device (1) for generating fine bubbles, comprising a substrate (3) having holes (5) therethrough, each hole comprising a gas inlet (7) and a gas outlet (9), wherein the width of the gas outlet is greater than the width of the gas inlet. A method of manufacturing said device and a method of eneratin fine bubbles.
Abstract:
To optimally mix treatment additives to a contaminated liquid, treatment additives are selected. A mixing energy requirement of the contaminated liquid and treatment additives is then determined by mixing the treatment additives over a range of time and mixing speeds, and measuring turbidity to determine the mixing time and speed which results in the lowest turbidity. A low mixing energy requirement requires a lower mixing time and mixing speed than a higher mixing energy requirement. The contaminated liquid and selected treatment additives are then directed into a mixing system (32) including at least one hydrocyclone (20). Each hydrocyclone (20) has an inlet aspect ratio, a barrel length and diameter selected based upon the mixing energy requirement determination. Altering the aspect ratio, diameter, and length of the hydrocyclone results in different mixing speeds and mixing time, which can be optimized for the given contaminated liquid and treatment additives.
Abstract:
In a stirred tank chemical reactor the mean age of the reactor contents affects a number of properties of the product, including for example the homogeneity of the product. The mean average age of the reactor contents can be determined by constructing a transparent model of the reactor and filling it with a fluid containing a fluorescent dye and having flow properties comparable to those of the reactor in use. A light is shone on the fluid as it is stirred under reaction conditions and a clear fluid flow into the model. Pictures are taken of the reactor contents and the mean fluid age of the contents of the model are determined relative to the exit age of the contents. This approach can be applied to determine for example which reactor ports to use, what agitator to use, what flow rates to use to improve reactor function.
Abstract:
Begasungsvorrichtung für Bioreaktoren mit einem in einem Gehäuse angeordneten Begasungselement mit Gasaustrittsöffnungen, wobei das Begasungselement als einMikrosparger ausgebildet ist, dessen Gasaustrittsöffnungen jeweils beabstandet zueinander angeordnet sind und eine Größe zwischen 100 μm und 200 μm aufweisen. Bevorzugt ist mindestens ein zweites Begasungselement mit Gasaustrittsöffnungen einer zweiten Größe vorgesehen ist, wobei die Begasungselemente von einem gemeinsamen Gehäuse mit getrennten Begasungskanälen gebildet werden.
Abstract:
多種多様な形状や循環方式のローター・ステータータイプのミキサーに適用できる包括的な性能評価方法を確立する。 ローター・ステータータイプのミキサーにおける全エネルギー消散率:ε t を求め、これに含まれる、ローター・ステーターの寸法と運転時の動力・流量を測定することにより得られる、各ミキサーに固有の数値であるミキサー全体の形状依存項の値の多寡を評価することにより、ミキサーの性能を評価する方法。
Abstract:
A method and apparatus for microfluidic processing by programmably manipulating a packet. A material is introduced onto a reaction surface and compartmentalized to form a packet. A position of the packet is sensed with a position sensor. A programmable manipulation force is applied to the packet at the position. The programmable manipulation force is adjustable according to packet position by a controller. The packet is programmably moved according to the programmable manipulation force along arbitrarily chosen paths.
Abstract:
多種多様な形状や循環方式のローター・ステータータイプのミキサーに適用できる包括的な性能評価方法を確立する。 ローター・ステータータイプのミキサーにおける総括エネルギー消散率:ε a を求め、これに含まれる、ローター・ステーターの寸法と運転時の動力・流量を測定することにより得られる、各ミキサーに固有の数値であるミキサー全体の形状依存項の値の多寡を評価することにより、ミキサーの性能を評価する方法。
Abstract:
There is disclosed a device (1) for generating fine bubbles, comprising a substrate (3) having holes (5) therethrough, each hole comprising a gas inlet (7) and a gas outlet (9), wherein the width of the gas outlet is greater than the width of the gas inlet. A method of manufacturing said device and a method of eneratin fine bubbles.