Pollutant treatment method based on activation of sulfite by glucose-derived carbon materials

A technology for activating sulfites and sulfites, applied in the field of environmental pollution control, can solve problems such as low catalytic efficiency and secondary pollution of water bodies, and achieve the effects of avoiding secondary metal pollution, low energy consumption and simple preparation method

Active Publication Date: 2020-08-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention solves the technical problem that the catalytic efficiency of sulfite activated by high-concentration transition metals in the prior art is generally not high, and secondary pollution is caused to water bodies

Method used

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  • Pollutant treatment method based on activation of sulfite by glucose-derived carbon materials
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  • Pollutant treatment method based on activation of sulfite by glucose-derived carbon materials

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Embodiment example

[0044] A carbon material activates sulfite and its application in reducing As(III) pollution in water. The details of this implementation case are as follows:

[0045] (1) 10 g of glucose was put into a tube furnace and calcined at 1000° C. for 120 min under the protection of nitrogen to obtain a carbon material as a catalyst.

[0046] (2) Add the prepared carbon material to the wastewater containing 0.4mmol sulfite and 10μmol As(Ⅲ) at a concentration of 0.1g / L, control the pH of the reaction to 4, the total volume of the reaction system is 20mL, and carry out at room temperature reaction.

[0047] After the sample dilution of taking out, measure with liquid chromatography atomic fluorescence spectrometer, carry out result analysis according to described embodiment:

[0048] figure 1 Infrared spectra of carbon materials. From the infrared spectrum figure 1 It can be seen that the high-temperature carbon material (C-1000) prepared by the present invention still has abundan...

Embodiment 2

[0055] (1) 10 g of glucose was put into a tube furnace and calcined at 1000° C. for 120 min under the protection of nitrogen to obtain a carbon material as a catalyst.

[0056] (2) Add the prepared carbon material to the wastewater containing 0.4mmol sulfite and 10μmol As(Ⅲ) at a concentration of 0.1g / L, control the pH of the reaction to 3, and the total volume of the reaction system is 20mL, and carry out at room temperature reaction.

[0057] After the sample taken out was diluted, it was measured by liquid chromatography-atomic fluorescence spectrometer. This method can completely oxidize As(III) in 30 minutes.

Embodiment 3

[0059] (1) 10 g of glucose was put into a tube furnace and calcined at 1000° C. for 120 min under the protection of nitrogen to obtain a carbon material as a catalyst.

[0060] (2) Add the prepared carbon material to the wastewater containing 0.4mmol sulfite and 10μmol As(Ⅲ) at a concentration of 0.1g / L, control the pH of the reaction to 6, the total volume of the reaction system is 20mL, and carry out at room temperature reaction.

[0061] The sample taken out was diluted and measured with a liquid chromatography atomic fluorescence spectrometer. This method can oxidize about 90% of As(III) in 30 minutes, and As(III) has been completely removed in 60 minutes.

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Abstract

The invention discloses a pollutant treatment method based on glucose-derived carbon material activated sulfite, belonging to the field of environmental pollution control. A carbon material is added to a water body containing sulfite to activate the sulfite; the sulfite generates sulfate radical and sulfite radical under the catalysis of the carbon material; the carbon material is obtained by calcining glucose in a non-oxidizing atmosphere. Preferably, the water body also contains heavy metal ions and / or organic pollutants, and the sulfate radical and sulfite radical oxidize the heavy metal ions and / or organic pollutants. A metal-free carbon material is used as a catalyst. The invention has the advantages of simple preparation method and low cost, can effectively activate sulfite to generate sulfite free radicals and sulfate radical free radicals for oxidizing heavy metals and organic pollutants in wastewater, simultaneously removes sulfite and other pollutants in wastewater, and can effectively avoid the technical problem that metal ions cause secondary metal pollution to water bodies.

Description

technical field [0001] The invention belongs to the field of environmental pollution control, and more specifically relates to a pollutant treatment method based on glucose-derived carbon material activated sulfite. Background technique [0002] Arsenic is an important pollutant in water bodies. It is a priority pollutant and has strong toxicity, which is harmful to human health and the environment. In the development of metallurgy, chemical industry, petroleum and other industries and the development of lean ore, arsenic is developed along with the main elements, enters the waste water, and becomes the main pollutant. The valence state of arsenic has a decisive impact on environmental toxicity. Trivalent arsenic (As(III)) is the most common form in the natural environment and has stronger toxicity and mobility than As(V). Therefore, firstly oxidizing highly toxic and highly mobile As(III) to low-toxic and mobile As(V) is a key step in removing As from water. [0003] Sulf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F101/20C02F101/10
CPCC02F1/725C02F2101/103C02F2101/20
Inventor 张延荣张玉孙鹏
Owner HUAZHONG UNIV OF SCI & TECH
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