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Method for removing organic pollutants in water body by activating persulfate with nutrition-enhanced soybean sprout-based biochar

A technology for activating persulfate and organic pollutants, applied in water pollutants, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of secondary environmental pollution, interference, poor catalytic activity, etc., and achieve the degree of graphitization High, fast reaction rate, low cost effect

Pending Publication Date: 2022-02-08
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the catalytic activity of existing biochar materials for activating persulfate is relatively poor, and a large amount of modifying agent needs to be added, which easily causes secondary pollution to the environment, and is easily susceptible to halide ions in the persulfate system. , Oxygenated anions, and the technical problems of interference from natural organic matter, and provide a method for nutrient-enhanced soybean sprout-based biochar to activate persulfate to remove organic pollutants in water

Method used

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  • Method for removing organic pollutants in water body by activating persulfate with nutrition-enhanced soybean sprout-based biochar
  • Method for removing organic pollutants in water body by activating persulfate with nutrition-enhanced soybean sprout-based biochar
  • Method for removing organic pollutants in water body by activating persulfate with nutrition-enhanced soybean sprout-based biochar

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specific Embodiment approach 1

[0026] Embodiment 1: This embodiment is a method for nutrient-enhanced soybean sprout-based biochar to activate persulfate to remove organic pollutants in water, specifically according to the following steps:

[0027] 1. Soak soybeans in 0.1%-0.15% sodium hypochlorite aqueous solution for 15min-20min for disinfection, take out soybeans and wash them with deionized water, then immerse them in nutrient solution for 10h-11h, take them out and place them on a germination tray , put the germination tray in a constant temperature incubator to germinate for 5 to 6 days, and regularly spray nutrient solution during the germination period to keep the soybean surface moist to obtain soybean sprouts;

[0028] The preparation method of the nutrient solution is as follows: dissolving ferrous sulfate heptahydrate, zinc sulfate heptahydrate and potassium iodide in water, and mixing uniformly to obtain the nutrient solution; in the nutrient solution, Fe 2+ The concentration of Zn is 30mg / L~35...

specific Embodiment approach 2

[0035] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the soybeans are immersed in a 0.1% sodium hypochlorite aqueous solution for 15 minutes for disinfection, and the soybeans are taken out and cleaned with clear water, and then immersed in the nutrient solution Soak for 10h. Others are the same as the first embodiment.

specific Embodiment approach 3

[0036]Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the Fe in the nutrient solution described in step one 2+ The concentration is 30mg / L, Zn 2+ The concentration is 30mg / L, I - The concentration is 15mg / L. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for removing organic pollutants in a water body by activating persulfate with biochar, in particular to a method for removing organic pollutants in a water body by activating persulfate with nutrition-enhanced soybean sprout-based biochar. The invention aims to solve the technical problems that existing biochar materials are poor in catalytic activity when being used for activating persulfate, a large amount of modifiers needs to be added, secondary pollution is easily caused to the environment, and the existing biochar materials are easily interfered by halide ions, oxygen-containing anions and natural organic matters in a persulfate system. The catalyst raw material adopted in the method is soybean which is rich in source, low in cost, simple to prepare and environment-friendly, non-free radical activation is mainly adopted in the activation process, the reaction rate is high, and persulfate is saved. When 0.2 g / L of the catalyst and 0.5 mM of potassium hydrogen persulfate are added, the degradation efficiency of 10 mg / L of phenol can reach 100% within 10 min.

Description

technical field [0001] The invention relates to a method for removing organic pollutants in water by activating persulfate with biochar. Background technique [0002] In recent years, with the rapid development of industrial technology and medical technology, more and more organic pollutants have been discharged into natural water bodies, seriously affecting the quality of water bodies and the balance of water ecological environment. Due to their strong hydrophobicity and difficult to degrade in the natural environment, organic pollutants are easy to remain and accumulate in the environment and organisms, and will also be enriched and amplified through the food chain, seriously affecting human health and life, and causing irreparable damage to the environment . At present, commonly used treatment methods include adsorption method, Fenton method, membrane separation method, biodegradation method, etc., but they all have disadvantages such as complicated process operation, hi...

Claims

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Application Information

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IPC IPC(8): C02F1/72B01J21/18B01J37/08C02F101/30
CPCC02F1/725B01J21/18B01J37/084C02F2101/30C05D9/02C02F1/722C02F1/283C02F2101/345A01G22/40A61L2101/06A61L2/0088C01B15/08
Inventor 曹嘉鑫陈素华董山山华河林张秋根邱贤华
Owner NANCHANG HANGKONG UNIVERSITY
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