Preparation and Application of Acidic Media Black t-Barium Sulfate Adsorption Material

A technology of adsorption material and medium black, which is applied in the direction of adsorption water/sewage treatment, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of complex preparation conditions, few types of heavy metals, high cost of raw materials, etc., and achieve easy raw materials Good adsorption performance and short adsorption time

Inactive Publication Date: 2011-12-07
TONGJI UNIV
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Problems solved by technology

[0006] Although the adsorbent prepared by the above method has a certain adsorption effect on heavy metals, the cost of raw materials is high, the preparation conditions are relatively complicated, the types of heavy metals that can be adsorbed are small, the adsorption capacity is low, and the adsorption materials may dissolve under acidic conditions, etc. Disadvantages, which limit their application

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  • Preparation and Application of Acidic Media Black t-Barium Sulfate Adsorption Material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Soluble barium chloride is selected as the skeleton material. The barium chloride is added with water to configure a barium chloride solution with a concentration of 7% by weight. The sodium sulfate is added with water to be configured as a 3% sodium sulfate solution by weight percentage. In 500ml of 20mmol acidic medium black T solution, under magnetic stirring conditions, add 500ml of 3% sodium sulfate solution, stir evenly, then slowly add 500ml of barium chloride solution with a mass percentage concentration of 7%, and mix the reaction for 10- In 30 minutes, the precipitate was settled for 1 hour, washed with water three times (3×1000ml) to precipitate, left overnight, and the precipitate was collected, which was the acidic medium black T-barium sulfate adsorption material of the present invention in the form of a suspension.

[0028] The above-mentioned suspension product can also be made into a solid adsorption material product through centrifugation, drying, and c...

Embodiment 2

[0033] The above-mentioned acid media black T-barium sulfate adsorption material produced by the method of the present invention is used to treat heavy metal pollutant wastewater. Prepare mixed samples containing 5 heavy metals in a 100ml Erlenmeyer flask: 52.800mg / L copper, 53.200mg / L lead, 53.400mg / L chromium, 54.800mg / L cadmium, 50.15mg / L zinc. Add 0.2%, 0.4%, and 0.6% of the mixed sample weight of acidic medium black T-barium sulfate adsorption material, react for 30 minutes and then centrifuge. The data measured by ICP-OES are shown in Table 2. Adding 0.4% can simultaneously absorb more than 91% The removal rates of copper, lead, chromium, cadmium and zinc are relatively low.

[0034] Table 2 Adsorption experiment data of heavy metal mixed solution

[0035] .

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Abstract

The invention relates to a preparation method and application of an acidic mordant black T-barium sulfate adsorption material. The acidic mordant black T-barium sulfate adsorption material is darkbrown and compounded by a framework made from barium sulfate, barium chloride or barium nitrate and acidic mordant black T serving as a clathration material; the preparation method comprises the following steps of: mixing barium salt (such as barium chloride, barium nitrate and the like) and sulfuric acid or sulfate in aqueous solution for reaction; depositing and separating to prepare an acidic mordant black T-barium sulfate compound material; and adding 0.2 to 2 percent of the material serving as a heavy metal absorption agent into heavy metal waste water, so that the acidic mordant black T-barium sulfate compound material has a good heavy metal absorption function. By using the acidic mordant black T, an organic and inorganic hybrid material with the heavy metal absorption function can be prepared; and the organic and inorganic hybrid material has the advantages that: the price of the raw materials is low, the preparation method is simple, the absorption speed is high, the adsorption capacity is high, various types of heavy metal can be absorbed and the like. The acidic mordant black T-barium sulfate adsorption material can be widely applied to treatment of heavy metal pollution and dye waste water.

Description

technical field [0001] The invention relates to the preparation and application of an acid medium black T-barium sulfate adsorption material, and belongs to the technical field of preparation and use methods of materials for heavy metal wastewater treatment. Background technique [0002] Dyestuffs, pesticides, electroplating, battery manufacturing, non-ferrous metal mining and beneficiation, and smelting produce a large amount of wastewater discharged into the environment. Heavy metals have brought serious disasters to humans and the ecological environment. Heavy metals have two notable characteristics. One is that they are chemically stable and cannot be degraded by microorganisms; the other is that they are easily enriched through the biological chain, which poses a serious threat to organisms at the top of the food chain and human health. [0003] The "Minamata disease" caused by mercury pollution and the "bone pain disease" caused by cadmium pollution that occurred in Ja...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/30C02F1/28C02F1/62
Inventor 郜洪文许新辉马冬冬吴佳浩辛丹慧
Owner TONGJI UNIV
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