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Method for producing ethanol by fermenting steam explosion quercus acutissima carr

An acorn shell, ethanol technology, applied in microorganism-based methods, biochemical equipment and methods, fermentation and other directions, can solve problems such as inability to use well, pollute the environment, energy, waste, etc., to achieve sustainable development, The effect of protecting the ecological environment and reducing costs

Inactive Publication Date: 2015-01-07
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting acorn shells have a large output, wide sources, and low price, but they cannot be well utilized, which not only pollutes the environment but also causes energy waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The acorns (collected from Chuzhou, Anhui) were air-dried and shelled, and the acorn shells were dried at 105°C for later use. The acorn shells were pretreated with a steam explosion machine, the volume ratio of the mass of the acorn shells to water was 1:20 (g: ml), the explosion pressure was 1.0 MPa, and the duration was 6 minutes. After treatment, wash the raw material with distilled water until neutral, dry at 105°C, pulverize with a pulverizer, and pass through a 40-60 mesh sieve.

[0020] Take a certain amount of blasting material powder, add water according to the mass volume ratio of 1:20 (g: ml), at 60°C, with a power of 300W, ultrasonic cleaning for 20min, then filter, and dry at 105°C to obtain tannin-removed acorns shell powder.

[0021] Weigh the tannin-removed acorn shell powder obtained in the above steps, add 0.1M, pH 4.8 citric acid buffer solution, the ratio of solid to liquid is 1:10 (g: ml), preheat in a water bath at 50°C for 20 minutes, and then f...

Embodiment 2

[0023] The dried acorn shells were pretreated with a steam explosion machine, the volume ratio of the mass of acorn shells to water was 1:10 (g: ml), the burst pressure was 2.0 MPa, and the duration was 10 minutes. After treatment, wash the raw materials with distilled water until neutral, dry at 105°C, pulverize with a pulverizer, and pass through a 40-60 mesh sieve to obtain blasting material powder for use.

[0024] Take a certain amount of blasting material powder, add water according to the mass volume ratio of 1:25 (g: ml), at 60°C, with a power of 300W, ultrasonic cleaning for 40min, then filter, and dry at 105°C to obtain tannin-removed acorns shell powder.

[0025] Weigh the de-tannin acorn shell powder obtained in the above steps and add 0.1M, pH 4.8 citric acid buffer solution, the mass volume ratio of the de-tannin acorn shell powder and citric acid buffer solution is 1:10 (g:ml) , Preheat in a water bath at 50°C for 20 minutes, then add cellulase according to...

Embodiment 3

[0028] The dried acorn shells were pretreated with a steam explosion machine. The volume ratio of the mass of acorn shells to water was 1:10 (g: ml), and the burst pressure was 1.5 MPa for 8 minutes. After treatment, wash the raw materials with distilled water until neutral, dry at 105°C, pulverize with a pulverizer, and pass through a 40-60 mesh sieve to obtain blasting material powder for use.

[0029] Take a certain amount of blasting material powder, add water according to the mass volume ratio of 1:20 (g: ml), wash at 50°C with a power of 300W for 30min, then filter and dry at 105°C to obtain tannin-removed acorn shells powder.

[0030] Weigh the de-tannin acorn shell powder obtained in the above steps and add 0.1M, pH 4.8 citric acid buffer solution, the mass volume ratio of the de-tannin acorn shell powder and citric acid buffer solution is 1:10 (g:ml) , Preheat in a water bath at 50°C for 20 minutes, then add cellulase according to the enzyme amount of 20FPU / g pow...

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Abstract

The invention discloses a method for producing ethanol by fermenting steam explosion quercus acutissima carr, and the method comprises the following steps of: carrying out steam explosion pretreatment by taking quercus acutissima carr as a raw material; removing tannin contained in the quercus acutissima carr; hydrolyzing and liquifying cellulase; and fermenting to obtain the ethanol. The method disclosed by the invention can be used for producing the fuel ethanol by taking the forestry waste quercus acutissima carr as the raw material, carrying out raw material pretreatment and cellulase saccharification and then utilizing saccharomyces cerevisiae fermentation, thereby reducing the cost of the production process of the fuel ethanol and enhancing the economy of the production process of the fuel ethanol; and the method disclosed by the invention changes the wastes into valuables by producing the fuel ethanol by utilizing agriculture and forestry wastes, thereby solving the problem that fuel competes with human for grains, sufficiently utilizing the biomass resources, protecting the ecological environment and being favorable to realizing the sustainable development.

Description

technical field [0001] The invention relates to a production method of fuel ethanol, in particular to a method for steam-exploded acorn shell fermentation to produce fuel ethanol. Background technique [0002] Over the years, the extensive use of traditional energy sources has led to energy crises and environmental degradation. In order to achieve sustainable economic and environmental development, renewable and pollution-free biomass energy has become a research hotspot today. [0003] Lignocellulose is the largest amount of renewable energy material on the earth. According to preliminary statistics, the world's annual output is about 10 billion tons. Using agricultural and forestry wastes as raw materials to produce ethanol can realize high-value utilization of biomass resources, which is conducive to improving the ecological environment, meets the requirements of circular economy development, and can also increase farmers' income. [0004] Acorns are the fruits of oak t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/10C12R1/865
CPCY02E50/16Y02E50/10
Inventor 杨静卫民张宁蒋剑春赵剑
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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