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Novel heavy metal ion plant sorbent and preparation method and use method thereof

A technology of plant adsorbents and heavy metal ions, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to achieve the effects of low operating costs, simple processing technology, and strong applicability

Inactive Publication Date: 2009-01-28
NORTHEAST FORESTRY UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no research literature reports on environmental protection by using False cocklebur at home and abroad.

Method used

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  • Novel heavy metal ion plant sorbent and preparation method and use method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Put the treated experimental material False cocklebur plant adsorbent into the artificially prepared copper-containing test solution. After mixing, the volume of the mixed solution is 40L, the concentration of the adsorbent is 20g / L, and the concentration of copper ions is 50mg / L. Adjust the corresponding adsorption conditions so that it is placed in an adsorption device for mixed adsorption for 120 min at room temperature of pH=6.5-6.8.

[0019] After the adsorption reaction, the clear liquid was collected, and the concentration of copper ions in the clear liquid was measured by atomic absorption spectrometry, and the average adsorption rate of copper in the experimental solution by the false cocklebur plant adsorbent was calculated to be greater than 55%, indicating that the false cocklebur as a biological The adsorbent has obvious adsorption effect on copper ions. The data records are shown in Table 1.

Embodiment 2

[0021] Put the treated experimental material False cocklebur plant adsorbent into the artificially prepared cadmium-containing test solution. After mixing, the volume of the mixed solution is 40L, the concentration of the adsorbent is 25g / L, and the concentration of cadmium ions is 50mg / L. Adjust the corresponding adsorption conditions so that it is placed in an adsorption device for mixed adsorption for 120 min at room temperature of pH=5.7-6.0.

[0022] After the adsorption reaction, the clear liquid was collected, and the concentration of cadmium ions in the clear liquid was measured by atomic absorption spectrometry, and the average adsorption rate of cadmium in the experimental solution by the false cocklebur plant adsorbent was calculated to be greater than 68%. The adsorbent has a more obvious adsorption effect on cadmium ions. The data records are shown in Table 1.

Embodiment 3

[0024] Put the treated experimental material False cocklebur plant adsorbent into the artificially prepared lead-containing test solution. After mixing, the volume of the mixed solution is 40L, the adsorbent concentration is 30g / L, and the lead ion concentration is 50mg / L. Adjust the corresponding adsorption conditions so that it is put into the adsorption device under the room temperature condition of pH=6.2-6.5 and mixed and adsorbed for 120min.

[0025] After the adsorption reaction, the clear liquid was collected, and the concentration of lead ions in the clear liquid was measured by atomic absorption spectrometry, and the average adsorption rate of lead in the experimental solution by the false cocklebur plant adsorbent was calculated to be greater than 85%, indicating that the false cocklebur as a biological The adsorbent has a more obvious adsorption effect on lead ions, and the adsorption effect is better. The data records are shown in Table 1.

[0026] The results of...

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Abstract

The invention discloses a novel heavy metal ion plant adsorbent, and a preparation and application method thereof. The Method is characterized by taking overground part organ of false cocklebur, an invasive plant, the growing period of which is 60 to 90 days, as a raw material, and then homogenizing the overground part organ of the false cocklebur after collection to lead the concentration thereof to be 10g / L to 30g / L and the granularity thereof to be 200 to 800 meshes. The obtained adsorbent homogenate is mixed with the sewage the heavy metal ion concentration of which is 20mg / L to 200mg / L; relative adsorption conditions are adjusted to that the pH value is equal to 5.0 to 7.0, and the adsorbent homogenate and the sewage are put in an adsorption device and mixed for adsorption; the adsorption effect is better. The heavy metal ion plant adsorbent has the advantages of available raw material, simple preparation and adsorption processes, low cost and applicability to treatment of various heavy metal sewages.

Description

technical field [0001] The invention relates to a novel heavy metal biosorbent prepared from plant materials and a preparation method thereof, in particular to an efficient heavy metal sewage treatment method and a resource utilization method for the invasive plant False cocklebur in my country. Background technique [0002] Wastewater containing heavy metals is a kind of pollution source that is extremely harmful to the ecological environment. How to eliminate the hazards of heavy metals and effectively recover precious metals in wastewater is a very prominent problem in today's environmental protection work. The most prominent shortcomings of traditional heavy metal-containing wastewater treatment methods such as: precipitation method, chemical redox method, evaporation method, ion exchange method, electrochemical treatment method, and membrane technology separation method lie in the treatment of low-concentration (<100mg / l) heavy metal wastewater , the operation is cum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 祖元刚赵修华祖柏实李庆勇肖鹏任之光张宝友
Owner NORTHEAST FORESTRY UNIVERSITY
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