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Preparation method and application of novel magnetic microalgae-based complexing agent

A microalgae-based compound agent and microalgae-based technology are applied in chemical instruments and methods, alkali metal compounds, and other chemical processes, which can solve the problems of large operating costs and loss of microalgae and wastewater, and achieve optimal pyrolysis temperature And the applicable conditions, improving the effect of easy reunion and promoting electron transfer

Pending Publication Date: 2020-03-24
河南永泽环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional treatment of pollutants in wastewater adsorbed by microalgae, microalgae are usually in a state of suspended growth, which is easily lost from the reactor, and the separation of microalgae and wastewater after the treatment is completed brings greater operating costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of a novel magnetic microalgae-based composite agent, comprising the following steps:

[0027] 1) Preparation of magnetic polymer biochar microspheres: put the biochar raw material in a muffle furnace and raise the temperature to 600-800°C at a rate of 10-20°C / min, hold for 4 hours, take it out and cool it to room temperature, grind and pass 200-mesh sieve to obtain biochar, acidify, wash and dry the powdered biochar with 1mol / h hydrochloric acid to obtain biochar powder for later use; ultrasonically disperse 0.5-1g of biochar powder in 30-50mL of distilled water, and place at room temperature Add to this distilled water containing Fe 3+ iron salt and stirred for 1h, and then added to the distilled water containing Fe 2+ iron salt and stirred for 1.5 hours, then added a weak base solution and stirred for 1-3 hours to make the pH of the solution ≥ 10 to obtain magnetic biochar;

[0028] Add the magnetic biochar and the compound solution containing ...

Embodiment 2

[0041] A preparation method of a novel magnetic microalgae-based composite agent, comprising the following steps:

[0042] 1) Preparation of magnetic polymer biochar microspheres: first, put the pulverized corn stalks in a muffle furnace, raise the temperature to 600-800°C at a rate of 10-20°C / min, hold for 4 hours, take it out and cool it to room temperature, Grind and pass through a 200-mesh sieve to obtain biochar, and use 1mol / hydrochloric acid to acidify, wash and dry the powdered biochar for use; then take 0.5g of biochar and ultrasonically disperse it in 30mL of distilled water within 30min, and then add 3mmol of Fe-containing 3+ iron salt and stirred at room temperature for 45 to 60 minutes, and then added 1.5 mmol of Fe-containing 2+ iron salt and stirred for 60 to 90 minutes, then added ammonia water and stirred for 2 hours to make the pH of the solution ≥ 10, washed to neutral, and dried in vacuum to obtain magnetic biochar; weigh 3g of magnetic biochar and 6g of acry...

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PUM

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Abstract

The invention relates to the field of organic pollutant and heavy metal wastewater treatment, particularly to a preparation method of a novel magnetic microalgae-based complexing agent. The method includes the steps of: subjecting biochar obtained by pyrolysis carbonization to macromolecular polymerization reaction to form biochar microspheres, then adding microalgae into a ferric salt solution toobtain magnetic microalgae-based polymer biochar microspheres, then adding a ferric salt and the prepared biochar microspheres under a water bath condition, fully stirring the substances to generatebiochar-loaded nano zero-valent iron, and finally ultrasonically dispersing the material in a solution, adding persulfate, and mixing the materials uniformly to obtain the magnetic microalgae-based biochar-loaded nano zero-valent iron activated persulfate complexing agent. The adsorbent prepared by the method has the advantages of synergistic removal of organic matters and heavy metals, excellentremoval effect, easy separation and the like.

Description

technical field [0001] The invention belongs to the field of treatment of electroplating wastewater, breeding wastewater and printing and dyeing wastewater, and in particular relates to a preparation method and application of a novel magnetic microalgae-based composite agent. Background technique [0002] With the acceleration of urbanization and the rapid development of industry and agriculture, most cities in my country have serious water pollution problems. A large amount of untreated urban garbage, industrial waste water, domestic sewage and atmospheric sediments are continuously discharged into the water body, causing the heavy metal content in the suspended matter and sediment of the water body to rise sharply. Water heavy metal pollution has become a global environmental pollution problem. The treatment of heavy metal polluted water bodies is imminent. At present, the removal of heavy metals in water generally adopts ion exchange method, chemical precipitation method...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F3/32C02F101/10C02F101/16C02F101/20C02F103/16C02F103/20C02F103/30
CPCB01J20/20B01J20/24B01J20/28009B01J20/28021C02F3/322C02F2101/16C02F2101/105C02F2101/20C02F2103/16C02F2103/20C02F2103/30
Inventor 路晏红王彦堂刘畅杨峥
Owner 河南永泽环境科技有限公司
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