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Sugarcane juice alcohol fermentation liquid pretreatment and waste liquid high-value product extraction method

An alcohol fermentation liquid and alcohol fermentation technology, applied in the field of alcohol fermentation waste liquid treatment, can solve the problems of no good treatment methods, high-concentration organic wastewater pollution, etc., to improve heat and mass transfer effects, accelerate sedimentation speed, and avoid fouling effect

Inactive Publication Date: 2017-06-09
新昌县迪斯曼科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other energy crops, energy sugarcane produces ethanol with low cost and good benefits, but there is a problem of high-concentration organic wastewater pollution in the production of sugarcane energy alcohol, and there is no good treatment method at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 500ml of sugarcane juice, add 300 mesh silicon carbide, and the addition amount is 50mg, and carry out operations such as disinfection, inoculation, and shaking flasks according to the alcohol fermentation operating procedures, and the fermentation is terminated after 50 hours of fermentation. Add 10% sodium hydroxide solution to the fermentation broth to adjust the pH value to 7.5, stir well, let stand, and separate solid-liquid to obtain sediment and clear fermentation broth. The precipitate I (dry weight is 0.023%) is recovered, and the clear fermentation broth is used to distill alcohol to obtain alcohol (with alcohol content of 6.64) and alcohol waste liquid (with COD value of 1.56×10 4 mg / L).

[0031] Take the above-mentioned alcohol waste liquid, adjust the pH value to 8.0 with 10% sodium hydroxide solution, stir well, let stand, and separate the solid and liquid to obtain the precipitate (dry weight is 0.008%) and alcohol waste liquid clear liquid (COD valu...

Embodiment 2

[0033] Take 500ml of sugarcane juice, add 180 mesh high-purity pure white quartz sand, and the addition amount is 200mg, and carry out operations such as disinfection, inoculation, and shaking flasks according to the alcohol fermentation operating procedures, and the fermentation is completed after 50 hours of fermentation. Add 10% sodium hydroxide solution to the fermentation broth to adjust the pH value to 7.3, stir well, let stand, and separate solid-liquid to obtain sediment and clear fermentation broth. The precipitate I (dry weight is 0.026%) is recovered, and the clear fermentation broth is used to distill alcohol to obtain alcohol (with alcohol content of 6.76) and alcohol waste liquid (with COD value of 1.78×10 4 mg / L).

[0034] Take the above-mentioned alcohol waste liquid, adjust the pH value to 7.9 with 10% sodium hydroxide solution, stir well, let stand, and separate the solid and liquid to obtain the precipitate (dry weight is 0.009%) and alcohol waste liquid cle...

Embodiment 3

[0036] Take 500ml of sugarcane juice, add 170-mesh bauxite, and add 200mg, and carry out operations such as disinfection, inoculation, and shaking flasks according to the alcohol fermentation operating procedures, and the fermentation is terminated after 50 hours of fermentation. Add 10% sodium hydroxide solution to the fermentation broth to adjust the pH value to 6.9, stir well, let stand, and separate solid and liquid to obtain sediment and clear fermentation broth. The precipitate I (dry weight is 0.031%) is recovered, and the clear fermentation broth is used to distill alcohol to obtain alcohol (with alcohol content of 6.80) and alcohol waste liquid (with COD value of 1.63×10 4 mg / L).

[0037] Take the above-mentioned alcohol waste liquid, adjust the pH value to 8.0 with 10Be lime emulsion, stir well, let stand, and separate the solid and liquid to obtain the precipitate (dry weight is 0.012%) and alcohol waste liquid clear liquid (COD value is 0.61×10 4 mg / L). The preci...

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Abstract

The invention discloses a sugarcane juice alcohol fermentation liquid pretreatment and waste liquid high-value product extraction method. The method includes following steps: (1), during sugarcane juice alcohol fermentation, adding ultrafine particles, adjusting pH value of fermentation liquid after fermentation is finished, separating solid and liquid, recycling the solid, and using the liquid for extracting alcohol; (2), adjusting pH value of alcohol waste liquid after alcohol is extracted, separating solid and liquid, recycling the liquid, and further extracting high-value pigment from the liquid, wherein the waste liquid after the pigment is extracted is colorless or light-colored, can serve as infiltration water for squeezing and extracting sucrose component from sugarcane or can be further subjected to simple biochemical treatment before being discharged. By the method, alcohol fermentation efficiency can be improved, clarifying effect is improved, difficulty in aftertreatment of the alcohol waste liquid is lowered, and a lot of high-added-value products are recycled; the method is of positive significance in improving overall economic benefit of sugarcane energy alcohol and protecting environment.

Description

technical field [0001] The invention relates to a method for pretreatment of sugarcane juice alcohol fermentation liquid and an extraction method for high-value products of waste liquid, and mainly relates to the field of alcohol fermentation waste liquid treatment. Background technique [0002] Sugarcane, Cane genus, perennial tall solid herb. The rhizomes are stout and developed. Culm height 3-5(-6) m. It is widely planted in southern tropical regions such as Taiwan, Fujian, Guangdong, Hainan, Guangxi, Sichuan, and Yunnan. Sugarcane is suitable for planting in places with fertile soil, abundant sunshine and large temperature difference between winter and summer. Sugarcane, a temperate and tropical crop, is the raw material for the manufacture of sucrose and for the extraction of ethanol as an energy substitute. There are more than 100 countries in the world producing sugarcane, the largest sugarcane producing countries are Brazil, India and China. Sugarcane is rich in...

Claims

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Application Information

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IPC IPC(8): C07C29/76C07C31/08C09B61/00
CPCC07C29/76C09B61/00C07C31/08
Inventor 陈宁王宇航
Owner 新昌县迪斯曼科技有限公司
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