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Preparation method of activated adsorbent and application of prepared activated adsorbent

A technology of active adsorbent and surfactant, applied in the application field of active adsorbent, can solve the problems of insufficient effect and high cost, and achieve the effect of good corrosion resistance, low cost and small dry shrinkage

Active Publication Date: 2015-05-06
INNER MONGOLIA PURUIFEN ENVIRONMENTAL SCI ANDTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect is not obvious enough, and the cost is relatively high

Method used

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Embodiment 1

[0021] A preparation method of active adsorbent, comprising the following steps:

[0022] 1) Hydrothermal reaction

[0023] First, mix 500g of diatomite and 500g of fly ash evenly, then add sodium hydroxide aqueous solution to the uniformly mixed diatomite and fly ash, heat and react at 80°C for 15 hours, and the concentration of sodium hydroxide aqueous solution is 40g / L , the liquid-solid ratio is 1.5:1;

[0024] 2) Activation treatment

[0025] Add linear sodium alkylbenzene sulfonate to the product obtained in step 2, the weight ratio of linear alkylbenzene sodium sulfonate is 5%, and mix evenly to obtain the required active adsorbent.

Embodiment 2

[0027] A preparation method of active adsorbent, comprising the following steps:

[0028] 1) Hydrothermal reaction

[0029] First, mix 500g diatomite and 5000g fly ash evenly, then add sodium hydroxide aqueous solution to the mixed diatomite and fly ash, heat and react at 150°C for 2 hours, the concentration of sodium hydroxide aqueous solution is 120g / L , the liquid-solid ratio is 2:1;

[0030] 2) Activation treatment

[0031] Add fatty alcohol polyoxyethylene ether sodium sulfate to the product obtained in step 2, the weight ratio of fatty alcohol polyoxyethylene ether sodium sulfate is 1%, and mix evenly to obtain the required active adsorbent.

Embodiment 3

[0033] A preparation method of active adsorbent, comprising the following steps:

[0034] 1) Hydrothermal reaction

[0035] First, mix 500g of diatomite and 2500g of fly ash evenly, then add sodium hydroxide aqueous solution to the uniformly mixed diatomite and fly ash, heat and react at 140°C for 4 hours, and the concentration of sodium hydroxide aqueous solution is 80g / L , the liquid-solid ratio is 3:1;

[0036] 2) Activation treatment

[0037] Add fatty alcohol polyoxyethylene ether ammonium sulfate to the product obtained in step 2, the weight ratio of fatty alcohol polyoxyethylene ether fat is 2%, and mix evenly to obtain the required active adsorbent.

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Abstract

The invention relates to the technical field of activated adsorbents and application thereof and in particular relates to a preparation method of an activated adsorbent and application of the prepared activated adsorbent. The preparation method of the activated adsorbent comprises the following steps: 1) carrying out hydrothermal reaction; and 2) carrying out activation treatment. The preparation method of the activated adsorbent has the advantages that diatomite and coal ash are mainly adopted as basic materials, and roasting is carried out, so that the specific area is greatly increased, and the adsorption property is greatly improved; a surfactant is added, so that the adsorption property is further improved; a heavy metal adsorption principle adopts ion exchange, heavy metal can be recycled, the adsorbent can be regenerated, and the activated adsorbent can be widely applied to severe environments such as deeply polluted and strong acid and strong alkali waste water or can be applied to remediation of heavy metal polluted soil; and compared with the prior art, the activated adsorbent has the advantages that the capability of adsorbing heavy metals in electroplating wastewater is greatly improved, the investment is low, the cost is low, copper, chromium and nickel can be recycled, and the adsorbent can be regenerated, so that a huge economic benefit is produced, and a soil remediation effect is also significant.

Description

technical field [0001] The invention relates to the technical field of an active adsorbent and its application, in particular to an active adsorbent and the application of the prepared active adsorbent. Background technique [0002] In recent years, there have been reports on the use of artificial zeolites to treat electroplating wastewater at home and abroad. At present, many domestic research results have shown that artificial zeolites can treat heavy metals, 3 The adsorption rate of -N and COD is 0.4mol / kg, and Japan is 0.9-1.0mol / kg. The effect is not obvious enough, and the cost is relatively high. [0003] For this reason, we have conducted further research on artificial zeolite and made active adsorbent to solve the deficiencies of the prior art. Contents of the invention [0004] One of object of the invention of the present invention is to provide a kind of preparation method of active adsorbent, the active adsorbent of preparation is to heavy metal, NH 3 The a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/42C02F1/58C02F1/62C22B15/00C22B23/00C22B34/32
CPCB01J20/103B01J20/14C02F1/288C02F2103/16C22B7/00
Inventor 吴昊吴启元吴昱邓梓文
Owner INNER MONGOLIA PURUIFEN ENVIRONMENTAL SCI ANDTECH
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