Abstract:
The invention relates to a method for producing a sorbent material, comprising firstly providing a porous silica substrate, said substrate comprising a plurality of silanol groups on a surface thereof then reacting said silanol groups with either a silicon compound of formula RnSi(OR′)4-n, where R is an alkyl group and n is 0 or 1, or an aminoalkyl silane of formula R″mRnSi(OR′)4-n-m having at least two hydrolysable groups attached to silicon, where R″ is an aminoalkyl group, m is 1 or 2 and n is 0 or 1s or a compound of formula M(OR′)4, or a mixture of any two or more of the preceding compounds, hydrolyzing the product, men reacting hydroxyl groups formed with one or more reagents, wherein each reagent is independently selected from the group consisting of an aminoalkyl silane having at least two hydrolysable groups attached to the silicon and a compound of formula M(OR′)4, and finally hydrolyzing the product, wherein each OR′ independently is a hydrolysable group and each M independently is Zr, Ti, Hf, Sn, Th, Pb or Ge. There is also described a sorbent material and use of a sorbent material for purifying, separating and concentrating processes.
Abstract:
A method for preparation of polyols from an unsaturated TAG oil that involves first epoxidizing the unsaturated TAG oil; then subjecting the epoxidized TAG oil to transesterification using a diol and/or triol in the presence of a catalyst to produce hydroxyalkyl esters of fatty acid epoxides; and finally hydroxylating the transesterification product using a diol and/or triol and a solid acid catalyst to obtain a polyol with relatively high hydroxyl value and low viscosity.
Abstract:
The present invention is generally directed to a versatile fluid treatment system which includes: a mobile device; a track system connected to the mobile device; one or more treatment vessels removably attached to the track system, each treatment vessel comprising a treatment material disposed inside the treatment vessel, at least one fluid inlet, and at least one fluid outlet; an input conduit that receives a fluid to be treated, the input conduit in fluid communication with the fluid inlet on the treatment vessel; and an output conduit in fluid communication with the fluid outlet on the treatment vessel, the output conduit receives treated fluid from the treatment vessels via the fluid outlet.
Abstract:
Metal organic resins, composite materials composed of the metal organic resins, and anion exchange columns packed with the composite materials are provided. Also provided are methods of using the composite materials to remove metal anions from a sample, methods of using the metal organic resins as fluorescence sensors for detecting metal anions in a sample, and methods of making the metal organic resins and the composite materials. The metal organic resins are amine-functionalized metal organic frameworks and their associated counter anions. The composite materials are composed of metal organic resin particles coated with organic polymers, such as alginic acid polymers.
Abstract:
Method of removing dissolved organic carbons from raw water, containing suspended and/or colloidal matter in a suspended ion exchange process, includes: feeding the water into a plug flow reactor at a rate of at least 500 m3/h, adding an anion exchange material to the liquid at the inlet of the reactor, suspending the anion exchange material in the water, transporting the water and the suspended anion exchange material under plug flow conditions to an outlet of the reactor after a predetermined residence time, feeding the water and the suspended anion exchange material to a separator and feeding treated water and anion exchange material from a reactor outlet to a separator, wherein the concentration of the anion exchange material in the reactor is smaller than 20 ml/l, and the residence time of the anion exchange material in the reactor is lower 30 minutes.
Abstract:
The present invention is generally directed to a versatile fluid treatment system which includes: a mobile device; a track system connected to the mobile device; one or more treatment vessels removably attached to the track system, each treatment vessel comprising a treatment material disposed inside the treatment vessel, at least one fluid inlet, and at least one fluid outlet; an input conduit that receives a fluid to be treated, the input conduit in fluid communication with the fluid inlet on the treatment vessel; and an output conduit in fluid communication with the fluid outlet on the treatment vessel, the output conduit receives treated fluid from the treatment vessels via the fluid outlet.
Abstract:
A method of chemically extracting radium-228, rare earth metals, thorium, the decay products of thorium, and phosphates from thorium-containing ores. The method involves breaking thorium-containing ore into fragments, wetting the fragments with a concentrated strong acid to make a slurry, heating the slurry, passing the heated solution through a first anion exchange column, retaining metals and radium-228 captured on the resin, allowing the radium-228 ions to decay to actinium-228, purifying the actinium-228 fraction, sending the actinium-228 fraction through a capture column, eluting the captured thorium-228 with acid, removing radium from the solution, retaining the radium-228 fraction for isomer in-growth, retaining decay products from the radium-228, separating the REEs from the process stream; and eluting and retaining the REEs.
Abstract:
Metal organic resins, composite materials composed of the metal organic resins, and anion exchange columns packed with the composite materials are provided. Also provided are methods of using the composite materials to remove metal anions from a sample, methods of using the metal organic resins as fluorescence sensors for detecting metal anions in a sample, and methods of making the metal organic resins and the composite materials. The metal organic resins are amine-functionalized metal organic frameworks and their associated counter anions. The composite materials are composed of metal organic resin particles coated with organic polymers, such as alginic acid polymers.
Abstract:
Metal organic resins, composite materials composed of the metal organic resins, and anion exchange columns packed with the composite materials are provided. Also provided are methods of using the composite materials to remove metal anions from a sample, methods of using the metal organic resins as fluorescence sensors for detecting metal anions in a sample, and methods of making the metal organic resins and the composite materials. The metal organic resins are amine-functionalized metal organic frameworks and their associated counter anions. The composite materials are composed of metal organic resin particles coated with organic polymers, such as alginic acid polymers.
Abstract:
The invention relates to a method for producing a sorbent material, comprising firstly providing a porous silica substrate, said substrate comprising a plurality of silanol groups on a surface thereof then reacting said silanol groups with either a silicon compound of formula RnSi(OR′)4-n, where R is an alkyl group and n is 0 or 1, or an aminoalkyl silane of formula R″mRnSi(OR′)4-n-m having at least two hydrolysable groups attached to silicon, where R″ is an aminoalkyl group, m is 1 or 2 and n is 0 or 1s or a compound of formula M(OR′)4, or a mixture of any two or more of the preceding compounds, hydrolysing the product, men reacting hydroxyl groups formed with one or more reagents, wherein each reagent is independently selected from the group consisting of an aminoalkyl silane having at least two hydrolysable groups attached to the silicon and a compound of formula M(OR′)4, and finally hydrolysing the product, wherein each OR′ independently is a hydrolysable group and each M independently is Zr, Ti, Hf, Sn, Th, Pb or Ge. There is also described a sorbent material and use of a sorbent material for purifying, separating and concentrating processes.