Preparation method of high-performance bamboo leaf matter carbonized Cr adsorbent

An adsorbent, high-performance technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, inorganic chemistry, etc., can solve the problems of adsorption and defluorination materials that have not been reported, achieve obvious economic and environmental benefits, adsorption selection The effect of enhancing the property and facilitating the separation of solid and liquid

Inactive Publication Date: 2017-08-22
青岛威瑞德环境科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The method of using bamboo leaves to prepare adsorption and defluoridation materials has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Remove the tip and base of fresh bamboo leaves, leaving thin bamboo leaves, wash the bamboo leaves, dry the surface moisture, cut into rectangular slices with a side length of 0.9cm, and bake at 90°C for 30 minutes;

[0020] (2) Carbonize the dried rectangular slices of bamboo leaves in a muffle furnace at 260°C for 60 minutes, soak the carbonized product in distilled water at 80°C for 1 hour, rinse with distilled water until the eluent is clear, and dry in an oven at 60°C To constant weight, obtain the precursor A of high-performance bamboo leaf quality carbonized Cr adsorbent;

[0021] (3) Completely immerse the obtained A in an aqueous solution of perchloric acid with a mass fraction of 70%. The liquid level of the perchloric acid solution is at least 1cm higher than that of A. After soaking for 30 minutes, transfer A and the soaking solution into high-pressure hydrothermal reaction. In the kettle, heat at 65°C for 10h;

[0022] (4) After the high-pressure hydro...

Embodiment 2

[0026] (1) Remove the tip and base of the fresh bamboo leaves, leaving thin bamboo leaves, wash the bamboo leaves, dry the surface moisture, cut into rectangular slices with a side length of 1.0cm, and bake at 100°C for 60 minutes;

[0027] (2) Carbonize the dried rectangular slices of bamboo leaves in a muffle furnace at 260°C for 45min, soak the carbonized product in distilled water at 90°C for 1h, rinse with distilled water until the eluent is clear, and dry in an oven at 60°C To constant weight, obtain the precursor A of high-performance bamboo leaf quality carbonized Cr adsorbent;

[0028] (3) Completely immerse the obtained A in an aqueous solution of perchloric acid with a mass fraction of 72%. The liquid level of the perchloric acid solution is at least 1cm higher than that of A. After soaking for 20 minutes, transfer A and the soaking solution into high-pressure hydrothermal reaction In the kettle, heat at 70°C for 12h;

[0029] (4) After the high-pressure hydrotherm...

Embodiment 3

[0033] (1) Remove the tip and base of the fresh bamboo leaves, leaving thin bamboo leaves, wash the bamboo leaves, dry the surface moisture, cut into rectangular slices with a side length of 1.1cm, and bake at 110°C for 45 minutes;

[0034] (2) Carbonize the dried rectangular slices of bamboo leaves in a muffle furnace at 260°C for 30 minutes, soak the carbonized product in distilled water at 85°C for 1 hour, rinse with distilled water until the eluent is clear, and dry in an oven at 60°C To constant weight, obtain the precursor A of high-performance bamboo leaf quality carbonized Cr adsorbent;

[0035] (3) Completely immerse the obtained A in an aqueous solution of perchloric acid with a mass fraction of 71%. The liquid level of the perchloric acid solution is at least 1cm higher than that of A. After soaking for 10 minutes, transfer A and the soaking solution into high-pressure hydrothermal reaction. In the kettle, heat at 60°C for 8h;

[0036] (4) After the high-pressure h...

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Abstract

The invention discloses a preparation method of a high-performance bamboo leaf matter carbonized Cr adsorbent. According to the method, fresh leaves of sympodial bamboo are subjected to point removal and base removal treatment and are then carbonized; next, perchloric acid, sodium hydroxide solution and acrylonitrile alcoholic solution are sequentially used for performing modification and optimization treatment on the carbonized bamboo leaves; the croadmixture brown black flay high-performance bamboo leaf matter carbonized Cr adsorbent can be obtained. The bamboo leaves are prepared into adsorption Cr removal materials through chemical and hydrothermal modification; the specific surface area of the adsorption materials can be improved; the pore structures of the adsorption materials are improved; the adsorption volume and the adsorption efficiency are improved; meanwhile, the surface chemical groups of the adsorption materials can be obviously improved; the adsorption selectivity on the Cr can be obviously enhanced. The bamboo leaf matter carbonized Cr adsorption removal materials maintain the thin sheet shapes of the bamboo leaves, so that the solid-liquid separation after the adsorption is convenient; waste materials are changed into beneficial materials; the environment-friendly effect is achieved; the high application prospects and obvious economic and environment benefits are realized.

Description

technical field [0001] The invention relates to the technical field of drinking water purification, in particular to a preparation method of a high-performance bamboo leaf carbonized Cr adsorbent. Background technique [0002] In recent years, due to the rapid development of traditional industries and modern industries, the unreasonable and substandard discharge of wastewater has caused the rapid increase of Cr content in surface water and groundwater, seriously affecting people's production and living needs and physical health. An economical and effective The task of removing Cr by methods and materials is very urgent. At present, the methods used to remove Cr at home and abroad mainly include ion exchange method, coagulation precipitation method, adsorption method, electrodialysis method, reverse osmosis method and so on. Among them, the adsorption method has the advantages of low cost, simple process and high efficiency. Commonly used adsorption materials for Cr removal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/22
CPCB01J20/20B01J20/28033C02F1/283C02F2101/22
Inventor 王惠健朱旭方爱国周震峰
Owner 青岛威瑞德环境科技有限公司
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