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Novel composite water treatment material and preparation method thereof

A new type of water treatment technology, applied in adsorption water/sewage treatment, chemical instruments and methods, and other chemical processes. Effect

Active Publication Date: 2013-09-04
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the filter membrane is used to treat industrial wastewater, the flow rate is slow and the efficiency is low

Method used

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  • Novel composite water treatment material and preparation method thereof
  • Novel composite water treatment material and preparation method thereof
  • Novel composite water treatment material and preparation method thereof

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Effect test

preparation example Construction

[0028] The preparation of graphene oxide described in the present invention adopts the improved hummers method, and the preparation method can refer to the documents of Wei Gao, Mainak Majumder et al. Engineered Graphite Oxide Materials for Application in Water Purification, ACS Appl.Mater.Interfaces2011,3,1821-1826 .

[0029] The preparation method of the acid-modified sepiolite fiber involved in the present invention is as follows: firstly take 500g of sepiolite raw ore that has passed through a 20 mesh sieve and place it in a 5000ml beaker, add 3112ml of deionized water, and the mass fraction of 388ml is 36 % hydrochloric acid solution, dispersed at a high speed of 1500r / min for 1h; then the above slurry was repeatedly filtered and washed until the pH was neutral; finally, the above filter cake was dried at 80°C, ground and weighed, and finally obtained Acid-modified sepiolite fibers.

Embodiment 1

[0031] 1. Weigh 15.00g of graphene oxide, add 80mL of a 1:1 mixed solution of water and ethanol, and ultrasonicate for about 20 minutes to obtain a uniformly dispersed graphene oxide suspension, add it to a round bottom flask, and weigh 49.95g of acid-modified The final sepiolite fiber (particle size 100-200 μm) and 0.05 g tourmaline powder (particle size 0.3-30 μm) were put into a round bottom flask, and then 520 mL of water with a volume ratio of 1:1 was added to the flask. Ethanol mixed solution;

[0032] 2. Put the flask into an electric heating mantle and heat it while condensing and refluxing for 3 hours, so that the graphene oxide is wrapped on the sepiolite fiber and tourmaline powder, suction filtered, dried, and ground to obtain tourmaline / graphene oxide / sea foam Stone composite water treatment material (referred to as T / GO / S).

[0033] 3. Add 20 drops of water glass adhesive to the prepared 20g composite water treatment material (T / GO / S), stir evenly, add it into t...

Embodiment 2

[0035] 1. Weigh 1.50g of graphene oxide, add 20mL of a 1:1 mixed solution of water and ethanol, and ultrasonicate for about 20 minutes to obtain a uniformly dispersed graphene oxide suspension, add it to a round bottom flask, and weigh 49.95g of acid-modified The final sepiolite fiber and 0.05g tourmaline powder are put into a round-bottomed flask, and then adding 320mL volume ratio to the flask is a water and ethanol mixed solution of 1:1;

[0036] Steps 2-3 are the same as in Embodiment 1.

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Abstract

The invention relates to a novel composite water treatment material and a preparation method thereof. The novel composite water treatment material contains tourmaline, sepiolite and graphene oxide or graphene. According to the preparation method, the graphene or the graphene oxide is wrapped on the surfaces of the sepiolite and the tourmaline by a reflux method, so the adsorptive property of the sepiolite on organic wastewater can be effectively improved by utilizing the large surface area of the graphene or the graphene oxide. The novel composite material has the characteristics of high adsorption efficiency, small using amount, energy conservation and the like, in particular, the sepiolite and the tourmaline are almost not consumed, so the treatment cost can be greatly reduced, and the dangerousness that dye molecules belonging to organic matters difficult to degrade are immersed into natural water and accumulated in the environment is avoided. Meanwhile, the graphene oxide and the graphene have good antibacterial property, so the phenomenon that activated sludge is increased too fast can be effectively improved, and considerable economic benefit, environmental benefit and social benefit are achieved.

Description

technical field [0001] The invention relates to a novel composite water treatment material, specifically a formula, preparation method and application of a composite water treatment material containing tourmaline, sepiolite and graphene oxide or graphene. Background technique [0002] With the world's population surge and rapid economic development, the scale of cities continues to expand, the demand for water resources and the rapid discharge of industrial wastewater make the world, especially China's water resources, are facing a huge crisis, save water, reduce sewage discharge It is imminent. However, the current discharge of industrial wastewater is seriously exceeding the standard, especially printing and dyeing wastewater. The printing and dyeing wastewater discharged by the textile printing and dyeing industry is one of the key pollution sources in my country's industrial system. According to the statistics of the State Environmental Protection Administration, the to...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 薛刚梁金生苗月珍张学亮陈丹
Owner HEBEI UNIV OF TECH
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