Preparation method of agricultural and forestry waste porous carbon-based composite adsorption material

A technology for composite adsorption material and agricultural and forestry waste is applied in the field of preparation of agricultural and forestry waste porous carbon-based composite adsorption material, which can solve the problems of cumbersome, expensive preparation process, high cost and the like, and achieve the effect of good adsorption effect.

Pending Publication Date: 2020-08-14
HEFEI UNIV
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Problems solved by technology

Metals in the catalytic activation method are easy to enter and stay inside the activated carbon, and the organogel carbonization method is expensive and the preparation process is cumbersome, and the precursor of the organoaerogel uses toxic organic substance

Method used

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  • Preparation method of agricultural and forestry waste porous carbon-based composite adsorption material
  • Preparation method of agricultural and forestry waste porous carbon-based composite adsorption material
  • Preparation method of agricultural and forestry waste porous carbon-based composite adsorption material

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Example Embodiment

[0023] Example 1

[0024] In this implementation, the prepared agricultural and forestry waste porous carbon-based composite adsorption material C-CuO-MgO-Ag 2 Among O, C, CuO, MgO and Ag 2 The molar ratio of O doping is 7:2:1:1. The preparation method steps are as follows:

[0025] 1). The bark, straw, sawdust, bagasse, orange peel, grapefruit peel, coconut husk, rice bran and other agricultural and forestry wastes are acid washed, deashed, and activated in an inert atmosphere to make holes to obtain agricultural and forestry waste porous carbon material.

[0026] 2) Weigh copper nitrate, magnesium oxide, and silver nitrate into a beaker, dissolve them with distilled water and dilute nitric acid, then add porous carbon from agricultural and forestry wastes, and add ammonia to adjust the pH of the solution to 11, and stir thoroughly;

[0027] 3) Put the solution in an ultrasonic microwave combined reactor for reaction, using ultrasonic 1000W + microwave 800W dual-functional reaction ...

Example Embodiment

[0029] Example 2

[0030] In this embodiment, the prepared agricultural and forestry waste porous carbon-based composite adsorption material C-CuO-MgO-Ag 2 Among O, C, CuO, MgO and Ag 2 The molar ratio of O doping is 7:2:2:1, and the preparation method is the same as that in Example 1. The porous carbon-based composite adsorption material C-CuO-MgO-Ag for agricultural and forestry waste is obtained 2 O(7:2:2:1).

Example Embodiment

[0031] Example 3

[0032] In this embodiment, the prepared agricultural and forestry waste porous carbon-based composite adsorption material C-CuO-MgO-Ag 2 Among O, C, CuO, MgO and Ag 2 The molar ratio of O doping is 7:1:2:1, and the preparation method is the same as that in Example 1. The porous carbon-based composite adsorption material C-CuO-MgO-Ag for agricultural and forestry waste is obtained 2 O(7:1:2:1).

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Abstract

The invention discloses a preparation method of an agricultural and forestry waste porous carbon-based composite adsorption material, and relates to the technical field of agricultural and forestry waste treatment and arsenic-containing wastewater treatment. The preparation method comprises the following steps: dissolving copper salt, magnesium salt and silver salt in water, adding a proper amountof dilute nitric acid, uniformly mixing, adding agricultural and forestry waste porous carbon, uniformly mixing, and reacting through an ultrasonic microwave combined reactor to prepare the agricultural and forestry waste porous carbon-based composite adsorption material. The agricultural and forestry waste porous carbon is used as a main carrier substance, CuO-MgO-Ag2O with a certain content andcomposition is used as a filler of an adsorption material, the prepared C-CuO-MgO-Ag2O (7: 2: 1: 1) modified agricultural and forestry waste porous carbon has the best adsorption effect, and the adsorption capacity reaches 282 mg/g. It is proved that the agricultural and forestry waste porous carbon-based composite adsorption material C-CuO-MgO-Ag2O can be used for arsenic-containing industrial domestic sewage and wastewater environment treatment.

Description

technical field [0001] The invention relates to the technical field of agricultural and forestry waste treatment and arsenic-containing wastewater treatment, in particular to a preparation method of a porous carbon-based composite adsorption material for agricultural and forestry waste. Background technique [0002] Arsenic pollution refers to environmental pollution caused by arsenic or its compounds. The mining and smelting of arsenic and arsenic-containing metals, the production of glass, pigments, technical materials, and paper using arsenic or arsenic compounds as raw materials, and the burning of coal can all produce arsenic-containing waste water, waste gas and waste residue, which will pollute the environment . In addition to natural causes such as rock weathering and volcanic eruptions, atmospheric arsenic pollution mainly comes from industrial production, the use of arsenic-containing pesticides, and coal combustion. Wastewater containing arsenic, pesticides and ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C10B53/02C02F1/28C02F101/10C02F101/20
CPCB01J20/20C10B53/02C02F1/283C02F2101/103C02F2101/20Y02E50/10
Inventor 阳杰王亚君田长安邵凌波吴涵余向阳孟俊杰张慧乔娜范苏皖陈志强
Owner HEFEI UNIV
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