Patent application number | Description | Published |
20120253082 | METHOD OF PRODUCING DIOL OR TRIOL - A method for producing a diol or triol, which has a step of removing impurities contained in a diol- or triol-containing solution, is provided. In the method, a diol- or triol-containing solution is filtered through a nanofiltration membrane having a polyamide-containing functional layer. The diol- or triol-containing solution is then collected from the permeate flow of the nanofiltration membrane. | 10-04-2012 |
20120253086 | METHOD OF PRODUCING BUTANOL - A method of producing butanol, which has a step of removing impurities contained in a butanol-containing solution, is provided. In the method, a butanol-containing solution is filtered through a nanofiltration membrane. Then the butanol-containing solution is collected from the permeate flow of the nanofiltration membrane. | 10-04-2012 |
20130041187 | BUTANOL MANUFACTURING METHOD - Highly pure butanol can be produced by a method for producing butanol, the method comprising: Step A, wherein a butanol-containing solution is filtered through a nanofiltration membrane and a butanol-containing solution is recovered from the permeate side; Step B, wherein the butanol-containing solution obtained in Step A is passed through a reverse osmosis membrane and thereby concentrated to cause two-phase separation into a butanol phase and an aqueous phase; and Step C, wherein butanol is recovered from the butanol phase obtained in Step B. | 02-14-2013 |
20140171614 | METHOD FOR PRODUCING ORGANIC ACID - By subjecting an organic acid derived from a biomass resource to oxidation treatment using an oxidizing agent such as hydrogen peroxide, tert-butylhydroperoxide, ozone, sodium hypochlorite or sodium chlorite, colored impurities contained in the organic acid derived from a biomass resource can be removed. | 06-19-2014 |
20140238841 | PROCESS FOR PRODUCING 2,3-BUTANEDIOL - A method of producing 2,3-butanediol includes subjecting a 2,3-butanediol culture liquid produced by microbial fermentation to nanofiltration membrane treatment and ion-exchange treatment (Step A), and then adding an alkaline substance and performing distillation (Step B). | 08-28-2014 |
20140287461 | METHOD FOR PRODUCING SUGAR LIQUID - A method of producing a sugar liquid using a cellulose-containing biomass as a raw material includes (a) hydrolyzing a cellulose-containing biomass to produce an aqueous sugar solution and (b) filtering the obtained aqueous sugar solution through a reverse osmosis membrane to collect a purified sugar liquid from a feed side, while removing fermentation-inhibiting substances from a permeate side. | 09-25-2014 |
20150112041 | LACTIC ACID PRODUCTION METHOD - A method of producing lactic acid includes removing glycerol from an aqueous lactic acid solution containing glycerol as an impurity using an ion-exchange resin. The lactic acid can be separated simply and at low cost from an aqueous lactic acid solution containing glycerol as an impurity. | 04-23-2015 |
20160052845 | PROCESS OF PRODUCING 1,4-BUTANEDIOL - A process produces 1,4-butanediol by purifying 1,4-butanediol originated from a fermentation broth, by which process 1,4-butanediol having properties suited as a material of producing a polyester is obtained, which 1,4-butanediol enables to reduce by-production of tetrahydrofuran during the esterification reaction and to reduce the delay in polymerization. The process of producing 1,4-butanediol includes adding an alkaline substance other than an ammonia or an amine to an aqueous 1,4-butanediol-containing solution originated from a fermentation broth; distilling the resulting mixture; and recovering a 1,4-butanediol-containing solution from the vapor flow. | 02-25-2016 |