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A kind of preparation method of fe-cu bimetallic tourmaline synergistic microorganism to remove cr(ⅵ) filler

A tourmaline and bimetallic technology, applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problem of low utilization rate

Active Publication Date: 2020-07-07
CHINESE ACAD OF ENVIRONMENTAL PLANNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a highly efficient, economically feasible, and easy-to-use Fe-Cu bimetallic tourmaline synergistic method for the defects of low utilization rate of Cr(VI) reduced by traditional zero-valent iron and Cr(VI) reduced by traditional microorganisms. Preparation method of Cr(Ⅵ) packing by microorganism

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 100g of tourmaline and put it into a planetary ball mill for ball milling for 5 minutes. After the milled tourmaline powder passes through a 200-mesh standard sieve, take the tourmaline powder under the sieve for use;

[0031] (2) Weigh 10g of carbon powder and put it into a planetary ball mill for ball milling for 5 minutes. After the ball-milled carbon powder passes through a 200-mesh standard sieve, take the powder under the sieve for use;

[0032](3) Add 0.1g of the carbon powder treated in step (2) to 50g of ferrite powder sieved in step (1), mix well and set aside;

[0033] (4) Add sodium alginate at a concentration of 0.04 g / mL to 100 mL of distilled water, stir well, place in an incubator at 85°C and heat for 2 hours, dissolve completely and let stand for 2 hours before use;

[0034] (5) Add 5mL of the sodium alginate solution prepared in step (4) to step (3), stir well for 5 minutes before use;

[0035] (6) Place the mixture prepared in step (5) in a...

Embodiment 2

[0047] (1) Weigh 100g of tourmaline and put it into a planetary ball mill for ball milling for 8 minutes. After the milled tourmaline powder passes through a 200-mesh standard sieve, take the tourmaline powder under the sieve for use;

[0048] (2) Weigh 10g of carbon powder and put it into a planetary ball mill for ball milling for 8 minutes. After the ball-milled carbon powder passes through a 200-mesh standard sieve, take the powder under the sieve for use;

[0049] (3) Add 1g of carbon powder treated in step (2) to 50g of ferrite powder sieved in step (1), mix well and set aside;

[0050] (4) Add sodium alginate at a concentration of 0.04 g / mL to 100 mL of distilled water, stir well, place in an incubator at 85°C and heat for 3 hours, dissolve completely and let stand for 2 hours before use;

[0051] (5) Add 10mL of the sodium alginate solution prepared in step (4) to step (3), stir well for 8 minutes before use;

[0052] (6) Place the mixture prepared in step (5) in a pow...

Embodiment 3

[0063] (1) Weigh 100g of tourmaline and put it into a planetary ball mill for ball milling for 10 minutes. After the milled tourmaline powder passes through a 200-mesh standard sieve, take the tourmaline powder under the sieve for use;

[0064] (2) Weigh 10g of carbon powder and put it into a planetary ball mill for ball milling for 10 minutes. After the ball-milled carbon powder passes through a 200-mesh standard sieve, take the powder under the sieve for use;

[0065] (3) Add 2 g of carbon powder treated in step (2) to 50 g of ferrite powder sieved in step (1), mix well and set aside;

[0066] (4) Add sodium alginate at a concentration of 0.04 g / mL to 100 mL of distilled water, stir well, place in an incubator and heat at 85°C for 5 hours, dissolve completely and let stand for 2 hours before use;

[0067] (5) Add 20mL of the sodium alginate solution prepared in step (4) to step (3), stir well for 10 minutes before use;

[0068] (6) Place the mixture prepared in step (5) in ...

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Abstract

The invention discloses a preparation method of a Fe-Cu double-metal tourmaline-microorganism synergistic Cr (VI) removal filler. The product prepared by the method aims at the defects of low reactionefficiencies of Cr (VI) reduction by traditional zero-valent iron and Cr (VI) reduction by traditional microorganisms; and by introducing embedded modified microporous Fe-Cu tourmaline, the defects of traditional zero-valent iron and microorganism for reduction of Cr (VI) are effectively relieved, the Cr (VI) removal performance of the zero-valent iron is remarkably improved, meanwhile, the Cr (VI) reduction performance of microorganisms is further enhanced, and the filler preparation cost and the Cr (VI)-containing wastewater treatment cost are greatly reduced. The absolute Cr (VI)removal rate of the filler is improved by more than 15.15 times than that of a zero-valent iron filler, the cost of treating Cr (VI)-containing wastewater by the disclosed filler is reduced by more than 90% compared with that of the zero-valent iron filler, a technical support is provided for large-scale risk prevention and control of Cr (VI)-containing underground water, and the disclosed filler has good environmental benefits, economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of groundwater Cr(VI) pollution restoration, in particular to a preparation method for embedded modified microporous Fe-Cu bimetallic tourmaline in cooperation with microorganisms to remove Cr(VI) filler. Background technique [0002] The remediation of Cr(VI)-contaminated groundwater usually adopts pumping-surface chemical treatment method, but there are disadvantages such as high cost, long cycle, high energy consumption, and easy to cause secondary pollution of groundwater. In recent years, zero-valent iron PRB technology has rapidly emerged due to its advantages of low energy consumption and no secondary pollution. x Cr 1-x )(OH) 3 Precipitation attached to the surface of zero-valent iron hinders the further reaction between zero-valent iron and Cr(Ⅵ), leading to the passivation of zero-valent iron, so that the utilization rate is extremely low. [0003] Aiming at the problem of low utilization rate o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20C02F3/00C02F101/22
CPCC02F3/00C02F2101/22
Inventor 朱文会王夏晖吴文俊季国华何俊黄国鑫
Owner CHINESE ACAD OF ENVIRONMENTAL PLANNING
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