Maize straw core absorbing material and preparing method thereof

A technology of corn stalks and adsorption materials, applied in chemical instruments and methods, and other chemical processes, can solve the problems of high pollution, low output, and unreasonable development and utilization, and achieve the effect of wide sources and simple processes

Inactive Publication Date: 2009-09-09
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But 30% of these stalks are used as agricultural fuel, 25% are used as feed, 2-3% are used as raw materials for sideline production, 6-7% are directly returned to the field, and 35% of the remaining 220 million tons of stalks have not been rationalized. use
As a fuel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the corn stalk cob after removing leaves and peeling off the hard shell is pulverized to 1mm, weighs 10g, mixes with the mixed solvent that the ethylene glycol of 70mL and the 35mL NaOH that mass fraction is 2% form, in autoclave Digest for 20min at a medium pressure of 0.1-0.15MPa, filter with suction, wash with ethanol with a volume concentration of 60% until neutral; 2 o 2 40mL was stirred evenly, placed in an autoclave filled with water at the bottom, steamed for 20min, cooled rapidly, and freeze-dried to obtain a fluffy white adsorption material.

Embodiment 2

[0023] Embodiment 2: the corn stalk cob after removing the leaves and peeling off the hard shell is pulverized to 2mm, weighs 10g, and is 30mL Na of 6% with the ethylene glycol of 120mL 2 CO 3 Mix the mixed solvents of the composition, cook in an autoclave for 30min under a pressure of 0.1-0.15MPa, filter with suction, wash with ethanol with a volume concentration of 70% until neutral; the obtained filter residue is washed with 5% H 2 o 2 50mL was stirred evenly, placed in an autoclave filled with water at the bottom, steamed for 30min, the water was rapidly cooled, and freeze-dried to obtain a fluffy white adsorption material.

Embodiment 3

[0024] Example 3: The corn stalk cob after the leaves and hard shells were removed was crushed to 2.8mm, 10g was weighed, and 180mL of ethylene glycol and 30mL of KHCO with a mass fraction of 10% were used 3 The mixed solvents of the composition are mixed, cooked in an autoclave under a pressure of 0.1-0.15MPa for 50min, suction filtered, and washed with ethanol with a volume concentration of 80% until neutral; the obtained filter residue is washed with 8% H 2 o 2 80mL was stirred evenly, placed in an autoclave filled with water at the bottom, steamed for 40min, cooled rapidly, and freeze-dried to obtain a fluffy white adsorption material.

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PUM

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Abstract

The invention discloses a maize straw core absorbing material and a preparing method thereof, which includes the following steps: the maize straw core is crashed to be steamed and boiled in high pressure, sucked, filtered and washed in a mixed solution comprising high boiling-point alcohol and alkali; the filtered slag is oxidized by the oxidizing agent H2O2 and rapidly cooled; the absorbing material is obtained after refrigeration and drying. The preparing method of the invention uses the maize straw core as the raw material for preparing the absorbing material which effectively absorbs neutral protease and maltogenic amylase but does not inactivate the enzyme, sufficiently uses the natural resource, simplifies the preparing method and satisfies the requirements of sustainable development.

Description

technical field [0001] The invention relates to an adsorption material and a preparation method thereof, in particular to a corn stalk wick adsorption material and a preparation method thereof. Background technique [0002] As a special biocatalyst, enzyme has the advantages of high selectivity and catalytic efficiency, mild reaction conditions, and adjustable catalytic activity. The high activity and high selectivity of enzymatic reactions have been used in organic synthesis for asymmetric synthesis, synthesis and resolution of optically active compounds and natural compounds. However, free enzymes are very sensitive to the environment, and are not stable enough in strong acids, strong alkalis, high temperatures, high ion concentrations, and some organic solvents, which can easily lead to denaturation of enzyme proteins, thereby reducing or even losing their catalytic activity. At the same time, the free enzyme reaction is not easy to separate from the substrate and produc...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
Inventor 吕金顺纪丽莲褚效中宋远志徐继明刘燕
Owner HUAIYIN TEACHERS COLLEGE
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