Method for preparing medium-chain fatty acid on hollow fiber membrane by utilizing fermentation of synthesis gas

Abstract

The invention relates to a method for preparing medium-chain fatty acid on a hollow fiber membrane by utilizing fermentation of synthesis gas. The hollow fiber membrane is adhered to the interior of areactor, sludge, a medium needed by growth of microorganisms and a methane inhibitor are added into the reactor, the synthesis gas is injected into the reactor continuously, the reaction temperatureis controlled, so that substances in the reactor flows cyclically to react stably, and the medium-chain fatty acid is prepared. Compared with the prior art, the method solves the problem that competitiveness exists between the plant oil generated from the grain crop needed by preparing the medium-chain fatty acid and the grain needed by adequate food of human beings, and meanwhile, solves the problems that organic solid wastes are difficult to treat, and energy consumption is high.

Description

Technical field [0001] The invention belongs to the technical field of environmental engineering and solid waste pollution control, and particularly relates to a method for preparing medium-chain fatty acids on hollow fiber membranes by using synthesis gas fermentation. Background technique [0002] Medium-chain fatty acids refer to straight-chain single-molecule carboxylic acids with a number of carbon atoms between 6-10. They are the precursors for the production of chemical fuels and other chemical substances. They have higher energy density and lower water solubility. It can be used simply An effective method of separation without consuming too much energy, and ultimately reducing dependence on petroleum fuels, is an important breakthrough in solving the oil crisis. In summary, the advantages of medium-chain fatty acids mainly include: (1) Simple operating environment; (2) Low energy consumption and low cost consumption; (3) High energy density; (4) Low solubility in water, e...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing medium-chain fatty acids by fermentation of synthesis gas on a hollow fiber membrane in order to overcome the defects in the above-mentioned prior art, so as to solve the problem of large energy consumption required for the production of existing medium-chain fatty acids There is competition in planting food crops, and organic waste is difficult to dispose of, which will cause pollution to the ecological environment

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