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Preparation method for adsorption material for polluted water heavy metals and treatment method for polluted water heavy metals

A technology of adsorption material and treatment method, applied in the field of phytochemistry and adsorption science, can solve the problems of low content of active components and unsatisfactory adsorption capacity, and achieve the effect of good adsorption effect

Inactive Publication Date: 2013-12-18
SOUTH CHINA NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although corn stalks already have a certain adsorption capacity for heavy metal ions, the content of active components is low, and the adsorption capacity is still not satisfactory.

Method used

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  • Preparation method for adsorption material for polluted water heavy metals and treatment method for polluted water heavy metals
  • Preparation method for adsorption material for polluted water heavy metals and treatment method for polluted water heavy metals
  • Preparation method for adsorption material for polluted water heavy metals and treatment method for polluted water heavy metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Remove the residual leaves and knots on the straw, wash the residual soil residue and dust with tap water, then rinse with deionized water three times, dry in the air (or dry at 50°C), and then crush through a 20-mesh sieve , to obtain corn stalk powder and set aside.

[0040] 2) Immerse the corn stalk powder in an aqueous sodium hydroxide solution with a concentration of 10wt% (solid-to-liquid ratio: 10g / ml), and soak and react for 120 minutes at room temperature;

[0041] 3) Then add an aqueous solution of epichlorohydrin with a concentration of 90wt% (solid-to-liquid ratio is 10g / ml), under normal temperature conditions, soak and react for 18 hours, then suction filter to obtain a solid sample a;

[0042] 4) Immerse the solid sample a in an aqueous sodium hydroxide solution with a concentration of 10wt% (solid-liquid ratio of 10g / ml), and then add a carbon disulfide aqueous solution with a concentration of 90wt% (solid sample a and its solid-liquid ratio are 10g / m...

Embodiment 2

[0050] 1) Remove the residual leaves and knots on the straw, wash the residual soil residue and dust with tap water, and then wash it with deionized water three times, dry it in the air (or dry it at 50°C), and then crush it through an 80-mesh sieve , to obtain corn stalk powder and set aside.

[0051] 2) Immerse the corn stalk powder in a sodium hydroxide solution with a concentration of 1wt% (solid-to-liquid ratio: 100g / ml), and soak and react for 60 minutes at room temperature;

[0052] 3) Then add an aqueous solution of epichlorohydrin with a concentration of 85wt% (solid-to-liquid ratio is 100g / ml), soak and react for 12 hours under normal temperature conditions, and then suction filter to obtain a solid sample a;

[0053] 4) Immerse the solid sample a in a sodium hydroxide solution with a concentration of 1wt% (solid-liquid ratio is 100g / ml), and then add a carbon disulfide aqueous solution with a concentration of 85% (solid sample a and its solid-liquid ratio are 100g / m...

Embodiment 3

[0057] 1) Remove the residual leaves and knots on the straw, wash the residual soil residue and dust with tap water, and then wash it three times with deionized water, dry it in the air (or dry it at 50°C), and then crush it through a 60-mesh sieve , to obtain corn stalk powder and set aside.

[0058] 2) Immerse the corn stalk powder in a potassium hydroxide solution with a concentration of 8wt% (solid-to-liquid ratio: 1g / ml), and soak and react for 70 minutes at room temperature;

[0059] 3) Then add an aqueous solution of epichlorohydrin with a concentration of 95wt% (solid-to-liquid ratio is 1g / ml), soak and react for 24 hours under normal temperature conditions, and then suction filter to obtain a solid sample a;

[0060] 4) Immerse the solid sample a in a potassium hydroxide solution with a concentration of 5wt% (solid-liquid ratio is 1g / ml), and then add a carbon disulfide aqueous solution with a concentration of 95% (solid sample a and its solid-liquid ratio are 1g / ml),...

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Abstract

The invention discloses a preparation method for an adsorption material for polluted water heavy metals and a treatment method for polluted water heavy metals. The adsorption material for polluted water heavy metals is obtained by directly using maize straw as a raw material, and performing an xanthogenate modification treatment on the raw material by sodium hydroxide, epoxy chloropropane, carbon disulfide, magnesium sulphate and the like. The adsorption material prepared by the method disclosed by the invention is used for treating heavy-metal polluted water, and suitable for the conditions of neutral and acidic water environments; the adsorption material is low in dosage, high in removal rate, and capable of obtaining a good adsorption effect. The preparation method and the treatment method disclosed by the invention provide a new way for effective utilization for maize straw.

Description

technical field [0001] The invention belongs to the field of phytochemistry and adsorption science, and in particular relates to a preparation method and a treatment method of an adsorption material for heavy metals in polluted water. Background technique [0002] my country is a large agricultural country, and the amount of agricultural waste produced every year is huge, and corn stalks occupy a very prominent amount among many types of agricultural waste. However, in addition to some of the corn stalks being converted into ethanol, composted and returned to the field, or used as feed and edible fungus base material, or extracting xylitol, a considerable part of the corn stalks is directly burned, and due to Due to the uneven development of various regions, the proportion of burned corn stalks may be higher, which not only has an extremely low utilization rate and wastes resources, but also pollutes the environment and destroys the ecological balance. If the part of corn s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
Inventor 郑刘春孟佩佩方战强罗晓西
Owner SOUTH CHINA NORMAL UNIVERSITY
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