Preparation method of wheat straw and hydrotalcite composite material capable of adsorbing cobalt ions in electroplating water

A composite material, wheat straw technology, applied in adsorption water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., to achieve outstanding effect of regeneration and recycling

Active Publication Date: 2015-12-23
TAICANG BIQI NEW MATERIAL RES & DEV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both cobalt ions and soluble cobalt salts are toxic and can be harmful to human health and plant growth

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 more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Harvest the wheat straw, wash it with tap water, and dry it.

[0017] Dissolve ammonia water, ammonium chloride, urea, and magnesium chloride in deionized water, the concentration of ammonia water is 3g / L, the concentration of ammonium chloride is 3g / L, the concentration of urea is 6g / L, and the concentration of magnesium chloride is 1g / L to obtain an ammoniated solution .

[0018] Put 50 g of washed wheat straw in 500 mL of ammoniated solution, place it at 30° C. for 30 minutes, rinse and dry to obtain ammoniated wheat straw.

[0019] Dissolve acrylic acid and azobisisobutyronitrile in deionized water, the mass concentration of acrylic acid is 20%, and the mass concentration of azobisisobutyronitrile is 0.3%, to obtain acrylic acid / azobisisobutyronitrile mixed aqueous solution.

[0020] Put 100g of hydrotalcite in 500mL of acrylic acid / azobisisobutyronitrile mixed aqueous solution, stir for 1 hour, filter, dry at 90°C for 3 hours, cool, wash with deionized water, and ...

Embodiment 2

[0025] Harvest the wheat straw, wash it with tap water, and dry it.

[0026] Dissolve ammonia water, ammonium chloride, urea, and magnesium chloride in deionized water, the concentration of ammonia water is 6g / L, the concentration of ammonium chloride is 6g / L, the concentration of urea is 3g / L, and the concentration of magnesium chloride is 3g / L to obtain an ammoniated solution .

[0027] Put 50 g of washed wheat straw in 500 mL of ammoniated solution, place it at 30° C. for 30 minutes, rinse and dry to obtain ammoniated wheat straw.

[0028] Dissolve acrylic acid and azobisisobutyronitrile in deionized water, the mass concentration of acrylic acid is 30%, and the mass concentration of azobisisobutyronitrile is 0.1%, to obtain acrylic acid / azobisisobutyronitrile mixed aqueous solution.

[0029] Put 100 g of hydrotalcite in 2000 mL of acrylic acid / azobisisobutyronitrile mixed aqueous solution, stir for 1 hour, filter, dry at 90°C for 6 hours, cool, wash with deionized water, a...

Embodiment 3

[0034] Harvest the wheat straw, wash it with tap water, and dry it.

[0035] Dissolve ammonia water, ammonium chloride, urea, and magnesium chloride in deionized water, the concentration of ammonia water is 4g / L, the concentration of ammonium chloride is 5g / L, the concentration of urea is 5g / L, and the concentration of magnesium chloride is 2g / L to obtain an ammoniated solution .

[0036] Put 100 g of washed wheat straw into 500 mL of ammoniated solution, place it at 30° C. for 30 minutes, rinse and dry to obtain ammoniated wheat straw.

[0037] Dissolve acrylic acid and azobisisobutyronitrile in deionized water, the mass concentration of acrylic acid is 25%, and the mass concentration of azobisisobutyronitrile is 0.2%, to obtain acrylic acid / azobisisobutyronitrile mixed aqueous solution.

[0038] Put 100 g of hydrotalcite in 1000 mL of acrylic acid / azobisisobutyronitrile mixed aqueous solution, stir for 1 hour, filter, dry at 90°C for 4 hours, cool, wash with deionized water, ...

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

PropertyMeasurementUnit
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the field of water treatment materials and relates to a preparation method of a wheat straw and hydrotalcite composite material capable of adsorbing cobalt ions in electroplating water. Modified hydrotalcite is composited to pore channels of ammoniated straw, and the preparation method comprises specific processes as follows: wheat straw washing, ammoniation, hydrotalcite modification, composite material preparation and the like. The prepared wheat straw and hydrotalcite composite material has the advantages as follows: (1), hydrotalcite is immobilized to the wheat straw through epoxy resin, the characteristics of small density and large specific surface area of the wheat straw can be played, and further, the advantage that the hydrotalcite has high adsorption capacity on heavy metal cobalt ions is used; (2), compared with hydrotalcite powder, the composite material solves the problems of clustering and caking of the hydrotalcite powder and reduced cobalt ion adsorption and can solve the problem of secondary pollution caused by the fact that the hydrotalcite for adsorbing cobalt ions is difficult to recover; (3), compared with the wheat straw, the composite material increases the cobalt ion saturation adsorption quantity greatly and avoids overflow pollution of organic carbon of the wheat straw in a water treatment process. The cobalt ion adsorption quantity of the prepared composite material is increased to 498.5 mg / g, and the composite material can be applied to cobalt-containing wastewater treatment for an electroplating plant and has broad market prospects.

Description

technical field [0001] The invention belongs to the technical field of water treatment materials, and in particular relates to a preparation method of a wheat straw hydrotalcite composite material which absorbs cobalt ions in electroplating water. Background technique [0002] Electroplating is a process that uses electrochemical methods to decorate, protect and obtain some new properties on metal and non-metal surfaces. The electroplating process was listed as one of the 25 restricted industries by the Chinese government in 1994 due to its pollution. However, from the current development status at home and abroad, electroplating technology is an indispensable part of modern industry and has no tendency to be fully replaced by other technologies. Instead, while constantly developing new technologies and new processes, it focuses on the prevention and control of electroplating pollution. [0003] With the development of society, a large amount of untreated heavy metal wastew...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30C02F1/28C02F103/16C02F101/20
Inventor 蓝碧健
Owner TAICANG BIQI NEW MATERIAL RES & DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap