Preparation method of loaded type nano iron underground water remediation agent

A groundwater restoration and nano-iron technology, which is applied in the field of restoration agents, can solve the problems of low preparation cost, fast restoration time, and low restoration rate, and achieve the effects of low preparation cost, fast restoration time, and high degradation rate

Inactive Publication Date: 2016-07-20
陈建峰
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main technical problem to be solved by the present invention is that the nano-materials synthesized by the current simple liquid phase method are easy to agglomerate, and the highly active nano-iron will spontaneously ignite when exposed to the air, and will be oxidized when it is slowly exposed to the air, and iron oxide will be formed on its surface The membrane loses its surface activity, and the repair agent is prone to secondary pollution, long repair period, small repair amount, low repair rate, and high repair cost. A preparation method for a loaded nano-iron groundwater repair agent is provided. The invention uses bovine bone to prepare a porous bone charcoal carrier, and directly mixes the carrier with an iron salt solution, and drops a reducing agent into the mixed solut

Method used

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Examples

Experimental program
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Effect test

example 1

[0020] 8. First weigh 2kg of bovine bone, immerse in boiling water, degrease for 30 minutes, put it in an oven and dry at 105°C for 2 hours, crush the dried bovine bone with a jet mill and pass it through a 100-mesh standard sieve to obtain bovine bone powder; Take 500g of the bovine bone powder obtained above and add it to 2L of sodium bicarbonate solution with a concentration of 0.1mol / L, put it into an ultrasonic oscillator and oscillate with a power of 200W for 1h, and filter the filter residue immediately with a concentration of 0.5mol / L acetic acid The solution was continuously rinsed for 10 minutes until the bovine bone powder no longer produced air bubbles, and then dried; the above-mentioned dried bovine bone powder was put into a muffle furnace, and pre-carbonized at 300°C for 1 hour under the protection of nitrogen to obtain a pre-carbonized intermediate. Mix potassium hydroxide and pre-carbonized intermediates at a ratio of 1:4, put them into a tubular resistance fu...

example 2

[0023]9. First weigh 2.5kg of bovine bone, immerse in boiling water, boil and degrease for 35 minutes, put it in an oven and dry at 108°C for 2.5 hours, crush the dried bovine bone with a jet mill and pass it through a 100-mesh standard sieve to obtain bovine bone powder ; Take 550g of the bovine bone powder obtained above and add it to 3L concentration of 0.1mol / L sodium bicarbonate solution, put it into an ultrasonic oscillator and immerse it for 1.5h with 250W power ultrasonic oscillation, filter the filter residue immediately with a concentration of 0.5mol / L acetic acid solution for 15 minutes, until the bovine bone powder no longer produces air bubbles, and then dry; put the dried bovine bone powder into a muffle furnace, and pre-carbonize at 350°C for 1.5 h under the protection of nitrogen to obtain a pre-carbonized intermediate Mix the potassium hydroxide and the pre-carbonized intermediate according to the mass ratio of 1:4, put it into a tubular resistance furnace, an...

example 3

[0026] 10. First weigh 3kg of bovine bone, immerse in boiling water, degrease for 40 minutes, put it in an oven and dry at 110°C for 3 hours, crush the dried bovine bone with a jet mill and pass it through a 100-mesh standard sieve to obtain bovine bone powder; Take 600g of the bovine bone powder obtained above and add it to 4L of sodium bicarbonate solution with a concentration of 0.1mol / L, put it into an ultrasonic oscillator and oscillate with a power of 300W for 2 hours, and filter the filter residue immediately with a concentration of 0.5mol / L acetic acid The solution was continuously rinsed for 20 minutes until the bovine bone powder no longer produced air bubbles, and then dried; the above-mentioned dried bovine bone powder was placed in a muffle furnace, and pre-carbonized at 400°C for 2 hours under the protection of nitrogen to obtain a pre-carbonized intermediate. Mix potassium hydroxide and pre-carbonized intermediates at a ratio of 1:4, put them into a tubular resis...

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Abstract

The invention discloses a preparation method of a loaded type nano iron underground water remediation agent and belongs to the field of remediation agents. The preparation method of the loaded type nano iron underground water remediation agent comprises the following steps: preparing a porous bone charcoal carrier from ox bone, directly mixing the carrier with an iron salt solution, dropwise adding a reducing agent into a mixed solution for reducing iron ions, forming precipitate in the iron ion reducing process, combining the precipitate with the porous bone charcoal carrier, and finally carrying out magnetic separation to obtain the underground water remediation agent. According to the preparation method of the loaded type nano iron underground water remediation agent, hydroxyapatite in the bone charcoal carrier can be used for extremely effectively removing the heavy metals, is high in degradation rate of heavy metal ions in the soil, is biodegradable, and is free of secondary pollution; the nano iron and the porous bone charcoal carrier are combined to prepare the remediation agent; the remediation agent is short in remediation time , high in remediation quantity and low in preparation cost; due to the loaded and coated nano iron, the problem of influence on the surface activity caused by the oxidization of the remediation agent when the remediation agent is in direct contact with the air can be avoided; the remediation agent has a wide application prospect.

Description

technical field [0001] The invention discloses a preparation method of a loaded nano-iron groundwater restoration agent, which belongs to the field of restoration agents. Background technique [0002] Organic pollution refers to the impact of exogenous organic pollutants on water microorganisms, aquatic animals and plants, and even human beings. [0003] The type of water pollution causing the hazard. Such pollutants usually have certain biological toxicity and are not easily degraded by microorganisms. In addition to certain acute biological toxicity, some of these pollutants will also accumulate and amplify in organisms through the food chain and affect the growth and development of organisms, which is extremely harmful to aquatic ecological health, and the need for treatment is very urgent. However, such water pollutants are usually hydrophobic and are not easily degraded by microorganisms. Therefore, how to choose appropriate treatment methods to treat this type of pol...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F103/06
CPCC02F1/00C02F2103/06
Inventor 陈建峰林茂平王统军
Owner 陈建峰
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