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Preparation method and application of active carbon supported nanometer Fe-Al (hydr)oxide particle composite material

A technology of oxide particles and composite materials, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problem of insignificant phosphate adsorption, and achieve low production cost and high adsorption capacity. , a wide range of effects

Inactive Publication Date: 2017-06-20
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its adsorption of phosphate was not significant

Method used

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  • Preparation method and application of active carbon supported nanometer Fe-Al (hydr)oxide particle composite material
  • Preparation method and application of active carbon supported nanometer Fe-Al (hydr)oxide particle composite material
  • Preparation method and application of active carbon supported nanometer Fe-Al (hydr)oxide particle composite material

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Embodiment 1

[0023] FeCl 3 ·6H 2 O and AlCl 3 ·6H 2 O was dissolved in 50ml deionized water to prepare Fe 3+ and Al 3+ Mixed solution, Fe in the mixed solution 3+ with Al 3+ The molar ratio of the solution is 9:1. Put 200ml of deionized water in a beaker and heat to boil. Add the mixed salt solution dropwise into the boiled deionized water and stir while controlling the pH of the solution in the neutral range. The solution was continuously heated until a brown Fe–Al hydroxide sol was formed, the concentration of the sol was 1mol / L, and then the sol was cooled to room temperature, and 1.5g of activated carbon was added to the sol for 30 minutes of ultrasonication, and the solution was placed in a constant temperature water bath at 75°C. Rotary evaporation in a medium to powder form, repeated washing with deionized water, and drying at 105°C to obtain a composite material, which is designated as "1.5AC-Fe / Al". figure 1 For the scanning electron micrograph of this composite material 1....

Embodiment 2

[0035] The 1.5AC-Fe / Al material prepared in Example 1 weighed 0.04g in a series of Erlenmeyer flasks, and then added 40ml of KH with a mass concentration of 5, 10, 20, 40, 60, 80mg / L 2 PO 4 Solution (background solution is pH=3, contains 10mmol / LNaCl and 5mmol / LCaCl 2), sealed and placed in a constant temperature oscillator, and oscillated at a rate of 180r / min at a temperature of (20±0.5°C) for 48h (the adsorption equilibrium time has been determined in advance). Then put it on a flat surface and let it settle overnight to allow the adsorbent to settle and then filter the supernatant with a 0.45um membrane filter. The adsorption amount of phosphorus is determined by the difference between the adsorption equilibrium and the initial concentration, and is determined by the ammonium molybdate colorimetric method . Phosphorus adsorption capacity (q, mg / g) and partition coefficient (K d ,L / g) is calculated by the following formula:

[0036] q=V(C 0 -C e ) / m (1)

[0037] K d...

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Abstract

The invention concretely relates to a preparation method and an application of an active carbon supported nanometer Fe-Al (hydr)oxide particle composite material. The preparation method comprises the following steps: dissolving a salt containing trivalent ions Fe<3+> and a salt containing trivalent ions Al<3+> in deionized water to form a mixed salt solution A; preparing boiling deionized water, and continuously heating the boiling deionized water; dropwise adding the mixed salt solution A into the boiling deionized water to form a solution B, and controlling the pH value of the solution B to be 5-7.5; and continuously heating the solution B to form a brown Fe-Al (hydr)oxide sol solution C, cooling the brown Fe-Al (hydr)oxide sol solution C to room temperature, pouring away the obtained supernatant, and adding a certain mass of active carbon to the sol solution C to form a sol and active carbon mixture D. Iron and aluminum salts form nano-particles and are highly-efficiently and uniformly loaded on the active carbon through a fierce method. The method has the advantages of cheap and easily available materials, simple device, convenience in operation, and easiness in control of a result.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, in particular to a preparation method and application of activated carbon-supported nano Fe-Al (hydr) oxide particle composite material. Background technique [0002] In recent years, the eutrophication of water bodies has become one of the serious water pollution problems facing the world. The eutrophication of water bodies and the excessive reproduction of algae lead to the deterioration of water quality and the degradation of lakes, seriously destroying the ecological environment of water bodies, and threatening the survival of aquatic organisms and human health. Since phosphorus is the most important limiting factor for algae proliferation, controlling the discharge of phosphorus-containing wastewater is the key to solving water eutrophication. [0003] At present, the phosphorus removal methods commonly used in wastewater treatment processes are mainly biological meth...

Claims

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Application Information

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IPC IPC(8): B01J20/08B01J20/30C02F1/28
CPCB01J20/08B01J20/0229C02F1/281
Inventor 王莉淋张莹阳峰张延宗张世熔罗玲何燕沈飞邓仕槐
Owner SICHUAN AGRI UNIV
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