Abstract: Disclosed herein is a process for separation and purification of a fermentation gas product from a fermenter off-gas containing a fermentation product, volatile impurities, bio-product impurities and water, based on a membrane system. In one preferred embodiment of the present invention, the process of separating and purifying a fermentation product from a fermenter off-gas, containing the fermentation product, volatile impurities, bio-byproduct impurities and water, comprises the steps of: (a) compressing the fermenter off-gas and feeding it into a membrane module, and (b) selectively permeating the volatile impurities, bio-byproduct impurities and water through the membrane, resulting in a product rich retentate stream. The fermentation gas product is separated from the fermenter off-gas in a single membrane stage to produce a purified retentate stream.

Abstract: The present disclosure generally relates to systems for isolating and/or purifying byproducts of anaerobic fermentation processes, and methods of using same. In one embodiment, gas compositions comprising conjugated diolefins (e.g., 1,3-biobutadiene and/or isoprene) and various amounts of impurities (e.g., water vapor from fermentation media, carbon dioxide from microbe respiration, and organic bio-byproducts such as propanol) are produced in a fermentation process. In some embodiments, the system includes one or more compressors and/or one or more distillers suitable for low-temperature separation of the conjugated olefin(s) from a substantial amount of the impurities in the gas composition.

Abstract: The present invention describes a process for separation and purification of a fermentation gas product from a fermenter off-gas containing fermentation product, volatile impurity, bio-product impurity and water, based on a membrane system. In one preferred embodiment of the present invention, the process of separating and purifying a fermentation product from a fermenter off-gas, containing the fermentation product, volatile impurity, bio-byproduct impurity and water, comprises the steps of: (a) compressing the fermenter off-gas and feeding it into a membrane module, and (b) selectively permeating the volatile impurity, bio-byproduct impurity and water through the membrane, resulting in an product rich retentate stream. The fermentation gas product is separated from the fermenter off-gas in a single membrane stage to produce purity purified retentate stream.

Abstract: The present disclosure generally relates to systems for isolating and/or purifying byproducts of anaerobic fermentation processes, and methods of using same. In one embodiment, gas compositions comprising conjugated diolefins (e.g., 1,3-biobutadiene and/or isoprene) and various amounts of impurities (e.g., water vapor from fermentation media, carbon dioxide from microbe respiration, and organic bio-byproducts such as propanol) are produced in a fermentation process. microorganisms that comprise one or more polynucleotides coding for enzymes in one or more pathways that catalyze a conversion of a fermentable carbon source to butadiene.

Abstract: The present invention relates to the process of production of olefins by means of the dehydration of light alcohols using ionic liquids as an acidic medium. Furthermore, the present invention relates to the use of such olefins, for example, for the production of polymers and ethylene glycol.

Abstract: The present disclosure generally relates to microorganisms that comprise one or more polynucleotides coding for enzymes in a pathway that catalyzes a conversion of a fermentable carbon source to butadiene and/or one or more polynucleotides coding for enzymes in a pathway that catalyzes a conversion of a fermentable carbon source to 1-propanol and/or 1,2-propanadiol. Also provided are methods of using the microorganisms to produce butadiene and co-products such 1-propanol and/or 1,2-propanediol.

Abstract: A new process for the preparation of neodymium neodecanoate, which is utilized as the metallic component, in a new process for the preparation of three-component homogeneous catalytic systems. The invention also deals with a solution polymerization process for the preparation of polybutadiene with a high content of the 1,4-cis units.