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Method for preparing feed by mixing straw and butanol or alcoholic fermentation waste water

A technology of ethanol fermentation and butanol fermentation, applied in animal feed, animal feed, additional food elements, etc.

Inactive Publication Date: 2013-02-27
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are also patents for steam-exploded straw fermentation to produce feed: such as the method of mixing solid-state fermentation steam-exploded straw to prepare protein feed, application number: 99122346.2, but no butanol or ethanol fermentation wastewater is used as a medium component, and this method is easy to use Aerobic and anaerobic two-step solid-state fermentation to fully degrade straw fiber and increase protein content at the same time

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  • Method for preparing feed by mixing straw and butanol or alcoholic fermentation waste water

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Effect test

Embodiment 1

[0014] (1) Straw steam explosion: Cut the collected corn stalks into 4-5cm, mix them with dilute acid hydrolyzed five-carbon sugar butanol fermentation wastewater of straw at a ratio of 1:0.8 (w / w), put them into a steam explosion tank, and Keep the pressure under pressure for 5 minutes for steam explosion treatment;

[0015] (2) Butanol fermentation waste liquid is mixed with steam-exploded straw: after the straw is steam-exploded, it is mixed with a certain volume of waste water after butanol fermentation and distillation of dilute acid hydrolyzed five-carbon sugar of straw, so that the moisture content is 75%;

[0016] (3) Solid-state fermentation: sterilize the mixture of straw dilute acid hydrolyzed five-carbon sugar butanol fermentation waste liquid and steam-exploded straw into Penicillium recumbens and white rot fungus, the inoculum amounts are 4% and 3% respectively, and the pressure is pulsating in solid state After fermenting for 4 days, insert Candida tropicalis an...

Embodiment 2

[0019] (1) Dilute acid pretreatment of stalks: the stalks are hydrolyzed at a temperature of 115° C. for 2 hours through 0.3% dilute sulfuric acid at a weight ratio of 1:6 of the stalks and dilute sulfuric acid, and then the hydrolyzed solution is decomposed by a screw extruder. The solid and liquid are separated to obtain dilute acid pretreated straw;

[0020] (2) Mixing the ethanol fermentation waste liquid with dilute acid pretreated straw: the straw dilute acid pretreated is mixed with a certain volume of waste water after ethanol fermentation and distillation, so that the moisture content is 70%;

[0021] (3) Solid-state fermentation: After sterilization of the dilute mixture of ethanol fermentation waste liquid and acid pretreated straw, it was inserted into Penicillium recumbens and white rot fungus, the inoculum amounts were 5% and 3%, respectively, and after 4 days of pressure pulsation solid-state fermentation, the For Candida tropicalis and Lactobacillus plantarum, ...

Embodiment 3

[0024] (1) Dilute acid pretreatment of stalks: the stalks are hydrolyzed at a temperature of 125° C. for 3 hours through 0.5% dilute sulfuric acid at a weight ratio of 1:6 of the stalks and dilute sulfuric acid, and then the hydrolyzed solution is decomposed by a screw extruder The solid and liquid are separated to obtain dilute acid pretreated straw;

[0025] (2) Butanol fermentation waste liquid is mixed with dilute acid pretreated straw: the straw dilute acid pretreated is mixed with a certain volume of straw dilute acid hydrolyzed five-carbon sugar butanol fermented and distilled waste water, so that the moisture content is 76%;

[0026] (3) Solid-state fermentation: sterilized mixture of dilute acid hydrolyzed five-carbon sugar butanol fermentation waste liquid of straw and straw pretreated by dilute acid, then inoculated with Penicillium decumbens and white rot fungus, the inoculum amounts were 3% and 4% respectively After 4 days of pressure pulsation solid-state ferment...

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Abstract

The invention relates to a method for preparing a protein feed by mixing straw and straw dilute acid hydrolytic pentose butanol or alcoholic fermentation waste water for solid state fermentation, which comprises the following steps of: mixing the steam-exploded straw or the straw hydrolyzed by dilute acid and the straw dilute acid hydrolytic pentose butanol or alcoholic fermentation waste water in a certain volume to ensure that moisture content is between 70 and 80 percent, after sterilizing, inoculating penicillium decumbens and trametes pubescens to the mixture and performing aerobic solid state fermentation for 4 to 6 days, inoculating candida tropicalis and lactobacillus plantarum and performing anaerobic fermentation for 2 to 3 days, and drying to obtain the protein feed. In the protein feed product prepared by the method, the protein content is between 22 and 27 percent, and the degradation rate of coarse fibers is between 63 and 68 percent. The method can solve the problem of discharging the butanol or alcoholic fermentation waste water; and the waste water and the straw are converted into the protein feed, so that the waste is turned into treasure.

Description

technical field [0001] The invention belongs to the field of feed production, in particular to a method for preparing feed by mixing straw with butanol or ethanol fermentation wastewater. technical background [0002] The discharge of a large amount of fermentation wastewater has always been an important factor restricting the development of the light industry. Especially in recent years, with the increasing demand for butanol and ethanol that can be used as energy products, the discharge of fermentation wastewater has brought huge environmental governance. Therefore, it is necessary to find cheap and efficient methods to treat these fermentation wastewater, reduce the comprehensive production cost of butanol and ethanol, and avoid the adverse impact of butanol and ethanol production on the environment. In fact, butanol and ethanol fermentation wastewater contains a large number of available nutrients, such as bacteria, and these organic matter can be used as feed for poultr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/00A23K1/12A23K1/14A23K10/37A23K20/10
CPCY02P60/87
Inventor 陈洪章彭小伟马保华生晓东
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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