摘要:
A photocatalyst for air purification, a photocatalyst film including the photocatalyst, and an air purification device including the photocatalyst. The photocatalyst for air purification includes: a first metal oxide particle having ultraviolet absorptivity, and fluorine bound to a surface of the first metal oxide particle; second metal oxide particles present on the surface of the first metal oxide particle. The use of the photocatalyst for air purification to remove or degrade volatile organic compounds (VOCs) and viruses.
摘要:
Provided is an acid-tolerant yeast cell, a method of producing an organic acid by using the yeast cell, and a method of producing the yeast cell resistant to acid.
摘要:
A ceramic catalyst filter, a filtering system including the same, and a method of manufacturing the same. The ceramic catalyst filter includes: a single body ceramic filter including a first surface for blocking a first material and a second surface for removing the second material passing through the first surface; and a photocatalyst thin film including nanometer-scale grains coated on a surface of the ceramic filter.
摘要:
An exhaust gas decomposition apparatus or system that includes a bioreactor fluorine-containing compound is decomposed by contact with the first and second fluids in the bioreactor. The first fluid is supplied through a bioreactor inlet and is exhausted through the bioreactor outlet, and moves in a first direction in the bioreactor. The first or second fluid includes a biological catalyst such as an enzyme or recombinant microbe, while the other fluid includes a fluorine-containing compound. As a result, the fluorine-compounds is efficiently biologically remediated by the biological catalyst.
摘要:
Provided is a recombinant microorganism including an exogenous gene encoding a bacterial cytochrome P450 protein or a variant thereof, a composition including the recombinant P450 protein or the variant thereof, which is used for removing CHnF4-n (n is an integer of 0 to 3) in a sample, and a method of reducing a concentration of CHnF4-n in the sample.
摘要:
Provided is a yeast cell having a stress tolerance, wherein the yeast cell has enhanced MSN2 activity, a method of producing the yeast cell, and a method of producing lactate by using the same.
摘要:
A composite photocatalyst, a photocatalytic filter for air purification, and an air purification device that includes the photocatalytic filter. The composite photocatalyst includes: a first metal oxide particle; and second metal oxide particles arranged on a surface of the first metal oxide particle, wherein specific surface area of the second metal oxide particles is greater than specific surface area of the first metal oxide particle, and bandgap energy of the second metal oxide particles is greater than bandgap energy of the first metal oxide particle. The composite photocatalyst structure may degrade and remove gaseous pollutants under room temperature and atmospheric pressure conditions. The composite photocatalyst may be applied to various indoor and outdoor air purification systems in the form of a photocatalytic filter.
摘要:
A process apparatus includes a gas supplier which supplies a reaction gas having a constant concentration, and a processor which performs a predetermined process by the reaction gas supplied from the gas supplier, where the gas supplier includes a reactor which accommodates a solid phase reactant, a heater which applies heat to the solid phase reactant to convert the solid phase reactant to a reaction gas in a gas phase, a gas pump which applies a predetermined pumping pressure to the reactor, and a gas outlet which discharges the reaction gas to the processor.
摘要:
A recombinant microorganism of the genus Escherichia, comprises a genetic modification that increases expression of a nosZ gene encoding NosZ, which is a nitrous oxide reductase, in the recombinant microorganism, wherein the recombinant microorganism comprises a nosR gene encoding NosR, a nosD gene encoding NosD, a nosF gene encoding NosF, a nosY gene encoding NosY, and an apbE gene encoding ApbE, and wherein the nosR gene, the nosD gene, the nosF gene, the nosY gene and the apbE gene are derived from a microorganism of the genus Pseudomonas, the genus Paracoccus, or a combination thereof.
摘要:
A recombinant microorganism including a genetic modification that increases activity of nitric oxide reductase in the recombinant microorganism, a composition for reducing a concentration of nitric oxide in a sample, the composition including the recombinant microorganism, and a method of reducing a concentration of nitric oxide in a sample, are disclosed.