Method for preparing polyethylene-polyamine-modified biomass-based magnetic heavy metal adsorbent

A polyethylene polyamine, biomass technology, applied in the directions of alkali metal compounds, chemical instruments and methods, adsorbed water/sewage treatment, etc., to achieve the effect of reducing use costs, reducing pollution, and converting organic resources with high efficiency and low consumption

Inactive Publication Date: 2017-01-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In the past few years, many researchers have devoted themselves to the study of low-cost heavy metal ion adsorbents, and many researches on natural biomass-based adsorbent materials that are cheap, easy to prepare and environmentally friendly have attracted the attention of many researchers. , based on magnetic hydrothermal glucose carbon and modifying its surface to prepare high-efficiency adsorbents has not been reported

Method used

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  • Method for preparing polyethylene-polyamine-modified biomass-based magnetic heavy metal adsorbent
  • Method for preparing polyethylene-polyamine-modified biomass-based magnetic heavy metal adsorbent
  • Method for preparing polyethylene-polyamine-modified biomass-based magnetic heavy metal adsorbent

Examples

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Embodiment 1

[0032] This embodiment relates to a method for modifying magnetic glucose hydrothermal carbon with diethylenetriamine as a monomer, comprising the following steps:

[0033]

[0034] The method comprises the steps of:

[0035] Dissolve glucose in water, stir for 10 minutes to form a clear glucose solution (20ml, glucose mass content is 10%), add 1ml of ultrasonic ferric oxide aqueous solution (25g / 100ml) to the glucose solution, and place it on the Teflon lining After mixing evenly in the high-pressure reactor and ultrasonication, seal the reactor and start the reaction. When the reaction temperature reaches 190°C, start to count the time and keep it at 190°C for 8 hours. After the reaction is completed, cool down at room temperature. The reaction mixture was filtered and the filtrate was collected, separated and purified to obtain magnetic glucose carbon hydrothermal carbon with a yield of 76.4%. FTIR analysis such as figure 1 shown. Mix 0.5g of glucose magnetic hydrothe...

Embodiment 2

[0041] This example relates to a method for modifying magnetic glucose hydrothermal carbon with triethylenetetramine as a monomer, and the reaction equation is as follows:

[0042]

[0043] Including the following steps:

[0044] Dissolve glucose in water, stir for 10 minutes to form a clear glucose solution (20ml, glucose mass content is 10%), add 3ml of ultrasonic ferric oxide aqueous solution (25g / 100ml) to the glucose solution, and place it on the Teflon lining After mixing evenly in the high-pressure reactor and ultrasonicating, seal the reactor and start the reaction. When the reaction temperature reaches 160°C, start to count the time and keep it at 160°C for 16 hours. The reaction mixture was filtered and the filtrate was collected, separated and purified to obtain magnetic glucose carbon hydrothermal carbon with a yield of 71.3%. Mix 0.5g of glucose magnetic hydrothermal carbon, 0.25g of DCC, and 10ml of triethylenetetramine, stir evenly, heat in an oil bath at 10...

Embodiment 3

[0050] This embodiment relates to a method for modifying magnetic glucose hydrothermal carbon with tetraethylenepentamine as a monomer, and the reaction equation is as follows:

[0051]

[0052] The method comprises the steps of:

[0053] Dissolve glucose in water, stir for 10 minutes to form a clear glucose solution (20ml, glucose mass content is 10%), add 5ml of ultrasonic ferric oxide aqueous solution (25g / 100ml) to the glucose solution, and place it on the Teflon lining After mixing evenly in the high-pressure reactor and ultrasonicating, seal the reactor and start the reaction. When the reaction temperature reaches 190°C, start to count the time and keep the temperature at 190°C for 4 hours. After the reaction is completed, cool down at room temperature. The reaction mixture was filtered and the filtrate was collected, separated and purified to obtain magnetic glucose carbon hydrothermal carbon with a yield of 77.6%. Mix 0.5g of glucose magnetic hydrothermal carbon, 0...

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Abstract

The invention discloses a method for preparing a polyethylene-polyamine-modified biomass-based magnetic heavy metal adsorbent, and the method comprises the following steps: S1, magnetic glucose hydrothermal carbon is prepared by hydrothermal reaction of a glucose aqueous solution and a ferroferric oxide aqueous solution; S2, the magnetic glucose hydrothermal carbon, a polyethylene-polyamine compound and a condensation agent are mixed for reaction to obtain the modified hydrothermal-glucose-based magnetic heavy metal adsorbent. The adsorbent prepared by the method can efficiently remove heavy metals in water bodies, and is prepared from glucose as a raw material, the glucose is abundant in nature, wide in distribution and renewable, use of toxic chemicals is avoided, operation is simple, the low-toxicity polyethylene-polyamine compound as a solvent and a reactant is less in environmental pollution, and is suitable for industrial production. The product aminated magnetic glucose hydrothermal carbon can be widely used as a heavy metal adsorbent and an organic pollutant adsorbent and in preparation and synthesis of a magnetic solid catalyst.

Description

technical field [0001] The invention relates to a preparation method of a magnetic heavy metal adsorbent, in particular to a preparation method of a polyethylene polyamine modified biomass-based magnetic heavy metal adsorbent. Background technique [0002] With the development of modern industry, the discharge of industrial wastewater containing heavy metal ions seriously pollutes the environment and endangers human health. Therefore, the removal of heavy metal ions in wastewater and the recovery of precious metal ions are becoming more and more important for sustainable development. In the past few years, many researchers have devoted themselves to the study of low-cost heavy metal ion adsorbents, and many researches on natural biomass-based adsorbent materials that are cheap, easy to prepare and environmentally friendly have attracted the attention of many researchers. However, the preparation of highly efficient adsorbents based on magnetic hydrothermal glucose carbon and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/22B01J20/28009C02F1/285C02F2101/20
Inventor 霍志保刘运杰任德章金放鸣宋志远姜乃萌姚国栋
Owner SHANGHAI JIAO TONG UNIV
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