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Easily separable clay adsorbent for removal of pollutants in water and preparation method thereof

A clay adsorption and easy separation technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of high cost and high energy consumption, and achieve polarity reduction and high adsorption performance , the effect of good easy separation characteristics

Inactive Publication Date: 2018-11-16
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although clay materials have made significant progress in the field of sewage treatment and remediation, the post-treatment process of clay-based adsorbents often requires centrifuges, membrane filters or magnetic fields to achieve solid-liquid separation, which consumes a lot of energy and costs.

Method used

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  • Easily separable clay adsorbent for removal of pollutants in water and preparation method thereof
  • Easily separable clay adsorbent for removal of pollutants in water and preparation method thereof
  • Easily separable clay adsorbent for removal of pollutants in water and preparation method thereof

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Embodiment 1

[0041] A preparation method for an easily separable clay adsorbent for removing pollutants in water, comprising the following steps:

[0042] (1) Take 2.7g FeCl 3 •6H 2 O, 80mL ethylene glycol, 7.2g sodium acetate, 2g sodium lauryl sulfate, and 0.5g clay powder were added to the beaker in turn, stirred at room temperature for 1.5 hours, and then the mixture was transferred to a 100mL reaction kettle, and the water heating temperature was 180° C, hydrothermal reaction for 10 hours, finally washed with water, washed with ethanol, and dried in a 60°C oven to obtain a magnetic clay powder for subsequent use.

[0043] (2) Take 50mg of the newly prepared magnetic clay powder and evenly disperse it on the glass surface plate, then put the surface plate into the sample tank of the radio frequency plasma device, first use the mechanical pump to pump the system to 10Pa, and then start the molecular pump Pump down to 10 -5 Pa, continue to pump for 1 hour, then turn off the vacuum pum...

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Abstract

The invention discloses an easily separable clay adsorbent for removal of pollutants in water and a preparation method thereof. The preparation method includes: mixing clay and an iron salt, then putting the mixture into a high temperature reaction kettle, carrying out hydrothermal reaction to prepare magnetic clay powder, then dispersing the newly prepared magnetic clay on a glass dish, and putting the glass dish to a sample slot in a radio frequency plasma device, introducing Ar or N2, conducting plasma-induced discharge treatment under the discharge conditions of a gas flow of 60sccm; a system pressure of 50Pa; and power of 80W; conducting treatment for 5min, after plasma discharge, rapidly adding the treated clay powder into a chitosan dilute acid solution, and carrying out reaction at80DEG C for 24h, thus obtaining the easily separable clay adsorbent. The removal efficiency of the obtained easily separable clay adsorbent on radioactive <134>Cs<+> ions and heavy metal Pb<2+> ionsboth with an initial concentration of 4.6*10<-4> mol / L in sewage can reach 51% and 63% respectively. With good water purification ability, the easily separable clay adsorbent can realize fast and simple solid-liquid separation by self-settlement after adsorption.

Description

technical field [0001] The invention relates to the field of a preparation method of a water purification material, in particular to an easily separable clay adsorbent for removing pollutants in water and a preparation method thereof. Background technique [0002] At present, water pollution has become a worldwide environmental pollution problem, especially the treatment of heavy metals and radioactive sewage, which has been listed as the number one environmental governance problem worldwide. Due to the advantages of simple method, easy operation, high efficiency and economy, adsorption method has become an important choice for purifying and reducing pollutants in water bodies. Studies have shown that the adsorption method has the advantages of high efficiency, economy, simplicity, and high selectivity for the removal of pollutants in wastewater, especially for low-concentration wastewater. [0003] The key to the adsorption method is the selection of adsorbents. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28
CPCB01J20/12C02F1/281
Inventor 杨树斌李庆忠程建波
Owner YANTAI UNIV