摘要:
Methods of treating water to promote the health of aquatic organisms are described. The method may include introducing pulverized kaolin into the water. The pulverized kaolin may have a particle size distribution such that at least 30% by weight of the particles pass through a 60 mesh screen. For example, the pulverized kaolin may be in the form of a dry powder having a d50 diameter less than 300 µm. The pulverized kaolin may remain dispersed or suspended in the water without dispersants and/or surfactants, e.g., to reduce the amount of at least one pathogenic microorganism present in the water and/or to reduce or prevent exposure of aquatic organisms to the pathogenic microorganism(s).
摘要:
The present disclosure relates to an adsorbent composition for the removal of chlorides from hydrocarbon. The present disclosure provides an adsorbent composition for removing chlorides from hydrocarbon. The adsorbent composition comprises an adsorbent matrix and a metallic component. The metallic component forms an intimate complex with the adsorbent matrix. The adsorbent composition is characterized by pore size in the range of 20 Å to 120 Å. It is found that the amount of chlorides removed by the adsorbent composition from the hydrocarbon is in the range of 0.020 wt.% to 0.047 wt.%.
摘要:
With the present invention, there is provided a production method for an electrode comprising activated carbon. Said production method comprises the steps of mixing 5- 90% by weight of activated carbon granules with a 5-90% by weight of a thermoplastic powder; adding 3-10% by weight of water to the said mixture; heating the aqueous mixture to 135-145°C; stirring the heated mixture at the said temperature for a predetermined period of time; pouring the hot mixture into a mold and pressing it at a pressure of 500-2000 bar so as to produce an electrode; removing the produced electrode from the mold so as to allow it to cool down.
摘要:
This invention is about silica monolithic particles, chromatographic stationary phases comprising them, and their manufacturing methods. The manufacturing process of silica monolithic particles of this invention includes three steps: the step for formation of bulk monolith (step 1) through sequential heating at three different temperatures, the step for powdering the silica monolith (step 2), and the step for calcination of the powdered silica monolith at 400-800 o C (step 3). In this invention, the manufacturing process for silica monolith particles becomes much simpler by removing the sieving and washing steps in comparison with the previous methods, causing great reduction of production cost. In addition, silica monolith particles with reduced average particle size and increased average pore size are obtained in this invention. Thus the stationary phases comprising the silica monolith particles of this invention result in high separation performance in liquid chromatography.
摘要:
Porous sol-gel material essentially consisting of units of one or more first polyalkoxysilanes chosen from the following compounds: (chloromethyl)triethoxysilane; 1,3-dimethyltetramethoxydisiloxane; ethyltrimethoxysilane; triethoxy(ethyl)silane; triethoxymethylsilane; triethoxy(vinyl)silane; trimethoxymethylsilane; trimethoxy(vinyl)silane; tetraethoxysilane or tetramethoxysilane (TMOS) and of units of one or more second polyalkoxysilanes chosen from the following compounds: (N-(3-(trimethoxysilyl)propyl)ethylenediamine; 3-aminopropyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane, in a first polyalkoxysilane/second polyalkoxysilane molar ratio of 1/0.01 to 1/1, optionally comprising a probe molecule, method of preparation and applications in the trapping of monocyclic aromatic hydrocarbons and other pollutants or in their detection.
摘要:
Die Erfindung betrifft ein Verfahren zur Abtrennung von Proteinen aus flüssigen Medien, wobei ein Proteine enthaltendes flüssiges Medium bereitgestellt wird, ein Tonmaterial bereitgestellt wird, welches: eine spezifische Oberfläche von mehr als 150 m 2 /g, ein Porenvolumen von mehr als 0,35 ml/g, einen Ionenaustauschkapazität von mehr als 40 meq/100g, und ein Sedimentvolumen in Wasser von weniger als 15 ml/2g aufweist, das Tonmaterial auf einen pH-Wert von 3,5 bis 9,0 äquilibriert wird, das flüssige Medium mit dem äquilibrierten Tonmaterial behandelt wird, und das gereinigte, an Proteinen abgereicherte flüssige Medium von dem Tonmaterial abgetrennt wird.
摘要:
The present invention relates to a process for separating nucleic acid molecules, preferably open circular and supercoiled plasmid DNA and RNA molecules from each other, comprising the steps of providing a solution comprising the molecules; adsorbing the molecules to adsorbing groups on a carrier; and optionally washing the column with a suitable solution. The present process is especially suitable for large-scale isolation of supercoiled ccc DNA to be used in gene therapy.