Meerschaum-hydroxyl oxidize iron-active carbon composite adsorbent preparation method and application thereof

A sepiolite hydroxyl and composite adsorption technology, which is applied in adsorption water/sewage treatment, other chemical processes, chemical instruments and methods, etc., can solve problems such as poor ion effect, and achieve easy preservation, simple regeneration conditions and low investment. Effect

Active Publication Date: 2017-10-20
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide a kind of seafoam that is easy to make, simple in equipment and easy to industrialized production for the ...

Method used

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  • Meerschaum-hydroxyl oxidize iron-active carbon composite adsorbent preparation method and application thereof

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Effect test

Embodiment 1

[0022] (1) Take 100 parts by weight of dry wheat straw, after crushing, pulverizing with a superfine pulverizer and refining with a superfine pulverizer, to obtain a powder particle A with a particle size of 200 meshes;

[0023] (2) Take 10 parts by weight of purified sepiolite with a particle size of 100 mesh, put it into a sulfuric acid solution with a concentration of 2mol / L, and stir continuously for 3 hours under the condition of a constant temperature water bath at 40°C. The solid-to-liquid ratio is 1:30. Separation by filtration, repeated washing with deionized water and absolute ethanol until the aqueous solution is neutral, drying at 65°C to obtain powder B, ready for use;

[0024] (3) Using sepiolite powder B, sodium alginate and water as raw materials, prepare a mixed solution C at a mass ratio of 1:3:2, and after fully stirring, put the mixed solution C into the reactor for hydrothermal carbonization reaction 6h, the hydrothermal carbonization reaction temperature ...

Embodiment 2

[0032] (1) Get the humic activated sludge of 150 weight parts, after crushing, pulverizing by ultrafine pulverizer and refinement by ultrafine pulverizer, the obtained particle size is 100 mesh powder particles A;

[0033] (2) Get 10 parts by weight of purified sepiolite with a particle size of 120 mesh, put it into a sulfuric acid solution with a concentration of 2.5mol / L and continuously stir for 3 hours under the condition of a constant temperature water bath at 50°C, the solid-to-liquid ratio is 1:40, Separation by suction filtration, repeated washing with deionized water and absolute ethanol until the aqueous solution is neutral, drying at 65°C to obtain powder B, ready for use;

[0034] (3) Using sepiolite powder B, sodium alginate and water as raw materials, prepare a mixed solution C at a mass ratio of 1:2:2, and after fully stirring, put the mixed solution C into the reactor for hydrothermal carbonization reaction For 8 hours, the temperature of the hydrothermal carbo...

Embodiment 3

[0042] (1) Get 150 parts by weight of rice husks, after crushing, pulverizing with a superfine pulverizer and refinement with a superfine pulverizer, to obtain a powder particle A with a particle size of 100 mesh;

[0043] (2) Get 10 parts by weight of purified sepiolite with a particle size of 100 mesh, put it into a sulfuric acid solution with a concentration of 2.0mol / L, and stir continuously for 3 hours under the condition of a constant temperature water bath at 50°C, the solid-to-liquid ratio is 1:30, Separation by suction filtration, repeated washing with deionized water and absolute ethanol until the aqueous solution is neutral, drying at 60°C to obtain powder B, ready for use;

[0044] (3) Using sepiolite powder B, sodium alginate and water as raw materials, prepare a mixed solution C at a mass ratio of 1:2:2, and after fully stirring, put the mixed solution C into the reactor for hydrothermal carbonization reaction For 8 hours, the temperature of the hydrothermal carb...

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Abstract

The invention discloses a meerschaum-hydroxyl oxidize iron-active carbon composite adsorbent preparation method and an application thereof. According to the invention, meerschaum, sodium alginate and water are taken as raw materials, the raw materials are subjected to a hydro-thermal carbonization reaction to prepare a meerschaum gel fibrous raw material; powder particles, meerschaum gel fiber and the ferrous sulphate mixed liquor are subjected to hot melting and a charing reaction to obtain a meerschaum-hydroxyl oxidize iron-active carbon composite adsorbent, the meerschaum-hydroxyl oxidize iron-active carbon composite adsorbent is used for processing Sb(V) and As(III) ions in water environment, and the good experiment result is achieved. The adsorbent prepared by the invention has the advantages of high adsorption capacity, renewable utilization, and wide application scope, and can be widely used for processing the composite heavy metal waste water containing antimony and arsenic.

Description

technical field [0001] The invention belongs to the technical field of composite adsorbent preparation, and in particular relates to the preparation and application of a sepiolite iron oxyhydroxide activated carbon composite adsorbent. Background technique [0002] Sepiolite is a new type of natural mineral adsorbent, generally in the form of dense clay or fiber aggregates, the overall structure is formed alternately by blocks and pores extending along the fiber crystal axis, and each block is composed of two tetrahedral SiO 2 The sheet is composed of an octahedral MgO center sheet. This special structure determines that it has a high specific surface area and good chemical and mechanical stability. It is widely used in many industries such as environmental protection, chemical industry, medicine, and construction. However, natural sepiolite also has some shortcomings, such as small actual specific surface area, small channels, weak acidity and poor thermal stability. probl...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/20
CPCB01J20/06B01J20/12B01J20/20C02F1/281C02F1/283C02F2101/20C02F2303/16
Inventor 邓仁健邵让唐智娥侯保林任伯帜金昌盛
Owner HUNAN UNIV OF SCI & TECH
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