Montmorillonite water purifying agent for adsorbing reactive dyes in water body

A technology of reactive dyes and stone water purifiers, applied in the direction of adsorption of water/sewage treatment, water pollutants, water/sewage treatment, etc., can solve the problem of high price, achieve the effect of improving adsorption and increasing the number of positive charges

Inactive Publication Date: 2020-09-08
ZHEJIANG NIRUAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These adsorbents are widely used and the price is high

Method used

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  • Montmorillonite water purifying agent for adsorbing reactive dyes in water body
  • Montmorillonite water purifying agent for adsorbing reactive dyes in water body
  • Montmorillonite water purifying agent for adsorbing reactive dyes in water body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of montmorillonite water purifying agent capable of adsorbing reactive dyes in water body, the method includes the following steps:

[0028] 1) Pulping: montmorillonite is added with deionized water to make a slurry, the concentration of the slurry reaches 35wt%, and ultrasonic treatment is performed for 30 minutes to make it uniformly dispersed in water.

[0029] 2) Pre-activation: the montmorillonite slurry after ultrasonic treatment is pre-activated with cation exchange resin to obtain pre-activated montmorillonite.

[0030] 3) Load: prepare a slurry of pre-activated montmorillonite and deionized water in a ratio of 1:8, add a mixed solution of 0.06mol / L cerium nitrate solution and 0.03mol / L ferric nitrate solution, and heat to 90 Stir for 6 hours at °C.

[0031] 4) Centrifuging, roasting in a muffle furnace at 400°C for 1.5 hours, cooling and grinding to obtain the montmorillonite water purifying agent.

Embodiment 2

[0033] A preparation method of montmorillonite water purifying agent capable of adsorbing reactive dyes in water body, the method includes the following steps:

[0034] 1) Pulping: montmorillonite is added with deionized water to make a slurry, the slurry concentration reaches 30wt%, and ultrasonic treatment is performed for 30 minutes to make it uniformly dispersed in water.

[0035] 2) Pre-activation: the montmorillonite slurry after ultrasonic treatment is pre-activated with cation exchange resin to obtain pre-activated montmorillonite.

[0036] 3) Load: prepare a slurry of pre-activated montmorillonite and deionized water in a ratio of 1:8, add a mixed solution of 0.05mol / L cerium nitrate solution and 0.03mol / L ferric nitrate solution, and heat to 80 Stir for 7 hours at °C.

[0037] 4) Centrifuging, roasting in a muffle furnace at 400°C for 1.5 hours, cooling and grinding to obtain the montmorillonite water purifying agent.

Embodiment 3

[0039] A preparation method of montmorillonite water purifying agent capable of adsorbing reactive dyes in water body, the method includes the following steps:

[0040] 1) Pulping: montmorillonite is added with deionized water to make a slurry, the slurry concentration reaches 25wt%, and ultrasonic treatment is performed for 30 minutes to make it uniformly dispersed in water.

[0041] 2) Pre-activation: the montmorillonite slurry after ultrasonic treatment is pre-activated with cation exchange resin to obtain pre-activated montmorillonite.

[0042] 3) Load: prepare a slurry of pre-activated montmorillonite and deionized water in a ratio of 1:8, add a mixed solution of 0.04mol / L lanthanum nitrate solution and 0.03mol / L ferric nitrate solution, and heat to 70 Stir for 8 hours at °C.

[0043] 4) Centrifuging, roasting in a muffle furnace at 400°C for 1.5 hours, cooling and grinding to obtain the montmorillonite water purifying agent.

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Abstract

The invention relates to a water purifying agent, in particular to a montmorillonite water purifying agent for adsorbing reactive dyes in a water body. The montmorillonite is modified to load rare earth metal ions and iron ions so that the positive charge number of the surface of the montmorillonite is greatly increased, and the adsorption effect of the montmorillonite on the reactive dyes in water can be remarkably improved.

Description

Technical field [0001] The invention relates to a water purifying agent, in particular to a montmorillonite water purifying agent that absorbs reactive dyes in water. [0002] technical background [0003] With the acceleration of my country’s industrialization and urbanization, various contradictions between economic development and the environment have become increasingly prominent. The discharge of large amounts of industrial wastewater, such as printing and dyeing wastewater (accounting for a larger share), has accelerated the deterioration of water quality. The harm and loss caused by the balance and human health are huge, and the increasingly serious water pollution and the lack of water resources have become a major obstacle to the sustainable development of our country. [0004] Adsorption is an effective measure to treat printing and dyeing wastewater. Commonly used adsorbents are activated carbon, silica gel, activated alumina, molecular sieves and so on. These adsorbents ...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F1/30C02F1/72C02F101/30
CPCB01J20/06B01J20/12C02F1/281C02F1/30C02F1/725C02F2101/308
Inventor 付国爱
Owner ZHEJIANG NIRUAN NEW MATERIAL CO LTD
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