Method for detoxifying cellulosic pyrolysate hydrolysate
A technology of hydrolyzate and pyrolysis solution, which is applied in chemical instruments and methods, sugar derivatives, sugar derivatives, etc., can solve the problems of long reaction time, high process cost, secondary pollution, etc., and achieve environmental friendliness, The effect of facilitating clean energy
Inactive Publication Date: 2016-07-27
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the acid hydrolysis and enzymatic hydrolysis methods commonly used to degrade cellulose are serious secondary pollution, long reaction time and high process cost. Therefore, in recent years, some scholars have proposed to use vacuum pyrolysis technology to quickly decompose cellulose into monosaccharides.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0013] The raw materials in the following examples are all commercially available unless otherwise specified.
[0014] Taking the pyrolysis solution of waste cotton wool as the research object, add sulfuric acid to the pyrolysis solution to 0.2mol / L, and react at 0.1Mpa, 120°C for 25 minutes to convert 100% of the dehydrated sugars in the pyrolysis solution for glucose.
[0015] Subsequent addition of Ca(OH) to the hydrolyzate 2 Adjust the pH to 6.0, and extract with ethyl acetate at a volume ratio of 2:1, remove the ethyl acetate in the upper layer, add 10% mass concentration of diatomaceous earth for shaking, filte...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| clearance rate | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for detoxifying cellulosic pyrolysate hydrolysate.The method is characterized by including the steps of adding sulfuric acid to pyrolysate for reaction so that anhydrous sugar in pyrolysate can be converted into glucose by 100%, adding Ca(OH)2 to hydrolysate to adjust the pH to be 6.0, extracting with ethyl acetate with the volume ratio of 2:1, removing ethyl acetate on the upper layer, adding kieselguhr with mass concentration of 10% to be vibrated, and putting the materials in an oven at 60 DEG C after filtering till residual ethyl acetate completely volatiles.The method has the advantages that toxic compounds in cellulosic pyrolysis product hydrolysate can be efficiently and rapidly removed, applied materials and reagents are low in price and easy to obtain and are friendly to the environment during processing, and clean energy can be conveniently produced through subsequent biological fermentation.
Description
technical field [0001] The invention belongs to the field of detoxification of cellulose biomass pyrolysis liquid, and relates to detoxification after hydrolysis of cellulose pyrolysis liquid and biotoxicity detection after detoxification. Background technique [0002] Energy is the foundation of the development of modern society. However, with the continuous consumption of non-renewable fossil fuels such as coal and oil and the increasing global environmental pollution, the development of renewable clean energy has received more and more attention. Cellulosic biomass has a huge stock on the earth, and it is of great significance to convert it into clean energy, and microbial fermentation is an important way. [0003] The macromolecular structure of cellulose material makes it difficult to be directly utilized, so it must be degraded into monosaccharide or disaccharide form before it can be fermented by microorganisms. However, the acid hydrolysis and enzymatic hydrolysis m...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/02C07H1/00C07H1/06
CPCC07H3/02C07H1/00C07H1/06
Inventor 余志晟常冬冬张洪勋
Owner UNIVERSITY OF CHINESE ACADEMY OF SCIENCES