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Adsorbent and preparation method

A technology of adsorbent and waste catalyst, which is applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of weak adsorption capacity, complicated process, low stability, etc., and achieve reduction of treatment cost, treatment The effect of simple method and low cost

Active Publication Date: 2016-05-04
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned literatures have prepared electroplating wastewater adsorbents by different methods, but from the design of the surface structure of the adsorbent, it mainly depends on the natural surface of the adsorbed substance and the interstitial channels accumulated between the particles, the adsorption capacity is weak, and there are complicated procedures in the process. , low stability or poor strength

Method used

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  • Adsorbent and preparation method

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Experimental program
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Effect test

Embodiment 1

[0024] (1) Add 30.6g of FCC waste catalyst, 14.4g of sepiolite, 11.0 of diatomite and 30ml of water to make a slurry, add 7.5g of aluminum chloride, adjust the final pH value of the slurry to 3.0 with hydrochloric acid, heat to 65°C, and react for 3h , filter, get filter material;

[0025] (2) Add 59.3g of kaolin to 20ml of water to make a slurry, add 90g of potassium acetate solution with a mass concentration of 50% dropwise for 1.0h, then adjust the pH of the system to 9.0 with sodium hydroxide, raise the temperature to 100°C, and the reaction time 0.5h, the reaction material was obtained;

[0026] (3) Mix the filter material obtained in step (1) with the reaction material obtained in step (2), and roll into a ball to form adsorbent A.

Embodiment 2

[0028] (1) Add 367g of FCC waste catalyst, 257g of bentonite and 630ml of water to make a slurry, add 16.2g of aluminum sulfate, adjust the final pH of the slurry to 4.0 with sulfuric acid, heat to 50°C, react for 12 hours, and filter to obtain a filter material;

[0029] (2) Add 71g of kaolin to 70ml of water to make a slurry, add 120g of ethylene glycol solution dropwise for 1.0 hours, then adjust the pH of the system to 11.0 with sodium silicate, raise the temperature to 50°C, and react for 20 hours to obtain the reaction material ;

[0030] (3) Mix the filter material obtained in step (1) with the reaction material obtained in step (2), and extrude to obtain adsorbent B.

Embodiment 3

[0032] (1) Add 7.6g of FCC waste catalyst, 43.0g of attapulgite and 33ml of water to make a slurry, add 3.2g of aluminum nitrate, adjust the final pH of the slurry to 5.0 with nitric acid, heat to 60°C, react for 6 hours, and filter to obtain material;

[0033] (2) Add 15.4g of kaolin to 11ml of water to make a slurry, add 52.0g of potassium acetate solution with a mass concentration of 50% dropwise for 0.5 hours, then adjust the pH of the system to 9.5 with sodium hydroxide, raise the temperature to 60°C, and the reaction time 15h, get reaction material;

[0034] (3) Mix the filter material obtained in step (1) with the reaction material obtained in step (2), and press into tablets to obtain adsorbent C.

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Abstract

The invention discloses an adsorbent and a preparation method thereof, and the invention is characterized in that the adsorbent is used for treating electroplating waste water. The preparation method comprises the following steps: A. water and acidic substances are added into an FCC waste catalyst and clay, pH value is adjusted to 3.0-5.0, a reaction is carried out at 50-70 DEG C for 0.5-12 hours, filtering is carried out, and a filter material is obtained; B. water is added into kaolin with uniformly stirring, a slurry is prepared, potassium acetate or a glycol solution is added drop by drop, the pH value is adjusted to 9.0-11.0, a reaction is carried out at 50-100 DEG C for 0.5-20 hours, and a reactant is obtained; C. the filter material obtained in the step A and the reactant obtained in the step B are mixed uniformly, and the adsorbent is prepared by band extrusion or ball rolling or tablet compressing and other modes. The preparation method has the advantages of simple flow and low cost, and the adsorbent can be used for effectively adsorbing heavy metal ions and organic impurities in the electroplating waste water; the treatment method is simple, the effect is stable, and good application prospects are provided.

Description

technical field [0001] The invention relates to an adsorbent for industrial electroplating wastewater and a preparation method thereof, belonging to the technical field of industrial wastewater treatment. Background technique [0002] In the context of the rapid development of highly concentrated modern large-scale industries, the total annual discharge of industrial wastewater in my country has exceeded 60 billion tons, of which the discharge of electroplating wastewater has reached 5 billion cubic meters. The water quality of electroplating wastewater is complex and its composition is difficult to control. , which contains chromium, nickel, copper, zinc and other heavy metal ions and organic impurities, etc., some of which are highly toxic substances that are carcinogenic, teratogenic, and mutagenic. These substances are difficult to degrade and destroy, and are discharged into the environment. The enrichment in the body and crop tissues, through the drinking water and the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30C02F1/28C02F103/16C02F101/20C02F101/22C02F101/10C02F101/30
CPCB01J20/08B01J20/12B01J20/14B01J20/16C02F1/288C02F2101/101C02F2101/20C02F2101/203C02F2101/22C02F2101/30C02F2103/16
Inventor 郑淑琴何理均唐课文易健民任劭余红霞张建策
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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