Enteromorpha absorbent and preparation technology thereof

A technology of adsorbent and enteromorpha, which is applied in the field of enteromorpha adsorbent and its preparation, can solve the problems of high energy consumption, high cost, serious pollution, etc., and achieve the effect of simple preparation process, sufficient raw materials and fast preparation speed

Active Publication Date: 2013-03-27
SHANDONG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

In order to overcome the shortcomings of the existing technology

Method used

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  • Enteromorpha absorbent and preparation technology thereof
  • Enteromorpha absorbent and preparation technology thereof
  • Enteromorpha absorbent and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Wash the Enteromorpha, dry it in an oven at 70°C for 4 hours, pulverize it into a powder in a magnetic pulverizer, and pass through a 100-mesh sieve to obtain a dry sample of Enteromorpha powder for future use. Prepare a 0.2mol / L sodium chloride solution, mix the dry sample of Enteromorpha powder with a 0.2mol / L sodium chloride solution at a mass ratio of 1:150, and stir and extract in a constant temperature water bath at 25°C for 6 hours. After the leached solution was filtered under reduced pressure, the filter cake was dried at 70°C for 4 hours to obtain the Enteromorpha adsorbent. The average pore diameter measured by a specific surface area analyzer is 7.8-9.4 nm.

Embodiment 2

[0025] Wash the Enteromorpha, dry it in an oven at 70°C for 6 hours, pulverize it into a powder in a magnetic pulverizer, pass through a 40-mesh sieve, and obtain a dry sample of Enteromorpha powder for future use. Prepare a 0.5mol / L calcium chloride solution, mix Enteromorpha powder and 0.5mol / L calcium chloride solution at a mass ratio of 1:200, stir and extract in a constant temperature water bath at 25°C for 8 hours. After the leached solution was filtered under reduced pressure, the filter cake was dried at 60°C for 4 hours to obtain the Enteromorpha adsorbent.

[0026] The above-mentioned Enteromorpha adsorbent was directly applied to the heavy metal wastewater treatment process to treat the simulated wastewater of heavy metal lead and cadmium, and achieved good results.

experiment example 1

[0028] The Enteromorpha adsorbent of Example 1 was used to treat heavy metal wastewater samples, and lead nitrate dissolved in deionized water was used to simulate lead-contaminated wastewater.

[0029] The Enteromorpha adsorbent prepared in Example 1 is used for the treatment of lead-contaminated wastewater with different concentrations. The dosage of Enteromorpha is 1g / L. The adsorption was shaken for 3 hours, and the results obtained after adsorption are listed in Table 1.

[0030] Table 1 Effects of Enteromorpha adsorbents on simulated water samples treated with lead pollution

[0031]

[0032] From the above treatment results, it can be seen that at the dosage of 1g / L, Enteromorpha adsorbent has good adsorption effect in the treatment of lead ion simulated water samples at low and high concentrations, and the adsorption capacity increases with the concentration of pollutants. It is suitable for treating high-concentration heavy metal polluted wastewater, and its adsor...

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Abstract

The invention relates to an enteromorpha absorbent and a preparation technology of the enteromorpha absorbent. The preparation technology comprises the following steps of: washing and drying enteromorpha, grinding in a grinder, sieving with a sieve with 40-100 meshes, mixing the obtained enteromorpha dry powder and 0.1-0.5mol/L of sodium chloride or calcium chloride solution according to a mass ratio of 1:150-200, stirring and extracting for 6-8h at the thermostatic waterbath of 25-30 DEG C; and drying filter cakes for 3-4h in a drying oven with the temperature of 60-70 DEG C after decompression suction filtration to obtain the enteromorpha absorbent. The enteromorpha absorbent provided by the invention is applied to adsorption treatment of heavy metal wastewater, and can be used for effectively removing heavy metal ions in the wastewater. The preparation technology is low in cost, simple in a production technology, wide in application range, and safe and non-toxic, and solves the problem of disaster green alga enteromorpha recycling.

Description

(1) Technical field [0001] The invention relates to an enteromorpha adsorbent and a preparation process thereof, belonging to the technical field of disaster green algae treatment and reuse and water treatment agents. (2) Background technology [0002] With the rapid development of industry and agriculture, my country's water resources have been polluted to varying degrees, and there is a growing trend. In order to save water resources, improve water utilization, and reduce environmental pollution caused by waste water, we must strengthen the treatment of waste water. Heavy metal wastewater is commonly found in electroplating, electronics and metallurgical industries, especially electroplating and electronics industry wastewater. Its composition is very complex. Over the years, the treatment of heavy metal wastewater has always been a problem. At present, the most common treatment methods are precipitation method, physical chemical method, and biochemical method, among whic...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 高宝玉赵爽岳钦艳王燕李倩
Owner SHANDONG UNIV
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