Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for degrading sulfamethoxazole by wood sponge cooperating with thermal activation persulfate

A technology of sulfamethoxazole and persulfate, which is applied in the field of environmental engineering, can solve the problems of difficult recovery of powder catalysts, poor catalytic activity, and low efficiency, and achieve the effects of efficient degradation, energy saving, and use cost reduction

Pending Publication Date: 2022-03-08
HEBEI CONSTR GRP CO LTD +1
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of method that wood sponge synergistically heat-activates persulfate to degrade sulfamethoxazole, solves the problem of poor catalytic activity, difficult recovery of powder catalyst, large consumption and traditional The high energy consumption and low efficiency of the thermal activation process have realized the efficient degradation of sulfamethoxazole in water

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for degrading sulfamethoxazole by wood sponge cooperating with thermal activation persulfate
  • Method for degrading sulfamethoxazole by wood sponge cooperating with thermal activation persulfate
  • Method for degrading sulfamethoxazole by wood sponge cooperating with thermal activation persulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A method for synergistic thermal activation of wood sponge to degrade sulfamethoxazole with persulfate, the specific steps are as follows:

[0061] (1) take balsa wood as raw material, be cut into some fritters of 5mm * 5mm * 5mm, dry for subsequent use; adopting pH is that the mass concentration of 4.6 acetic acid buffers is that the sodium chlorite solution of 2% carries out cooking treatment, and cooking temperature is 100°C, the cooking time is 6 hours; then transferred to a sodium hydroxide solution with a mass concentration of 8% for further cooking treatment, the cooking temperature is 80°C, and the cooking time is 12 hours.

[0062] (2) After the above materials are washed three times, the surface is coated with a tris-hydrochloric acid (Tris-HCl) buffered dopamine solution. The mass concentration of dopamine is 0.2%; the concentration of Tris buffer solution is 10mmol / L; the concentration of hydrochloric acid is 0.1mol / L; the pH of Tris-HCl solution is 8.5; the...

Embodiment 2

[0069] The difference from Example 1 is that the molar ratio of wood sponge catalyst: sulfamethoxazole solution: potassium hydrogen persulfate solution is changed to 3.33:1:6.08. The final degradation results are shown in the attached figure 2 , the SMX removal rate reached 98.33% within 30 minutes.

Embodiment 3

[0071] The difference from Example 1 is that the molar ratio of wood sponge catalyst: sulfamethoxazole solution: potassium hydrogen persulfate solution is changed to 5:1:6.08. The final degradation results are shown in the attached figure 2 , SMX removal rate reached 99.71% within 30 minutes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for degrading sulfamethoxazole by wood sponge cooperating with thermal activation persulfate, which comprises the following steps: chemically treating a wood block by using a wood sponge catalyst, coating by using a Tris-HCl buffered dopamine solution, dipping by using ferric nitrate nonahydrate and cobalt nitrate hexahydrate, dropwise adding a sodium hydroxide solution, washing, and drying to obtain the sulfamethoxazole. And carrying out freeze drying, further carrying out dipping treatment by adopting urea, and calcining in an inert gas environment. The method comprises the following steps: mixing wood sponge with persulfate, and degrading sulfamethoxazole under the heating conditions that the pH is 3-9 and the temperature is 30-60 DEG C. According to the method for degrading sulfamethoxazole by synergistically activating persulfate with the wood sponge, the problems that in a traditional heterogeneous persulfate activation technology, the catalytic activity is poor, a powdery catalyst is difficult to recycle and large in dosage, and in the traditional thermal activation process, energy consumption is large, and efficiency is low are solved, and efficient degradation of sulfamethoxazole in a water body is achieved.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a method for degrading sulfamethoxazole by synergistically thermally activating persulfate with wood sponge. Background technique [0002] In recent years, antibiotics have been frequently detected in environmental waters worldwide. Sulfamethoxazole belongs to the sulfonamide antibiotics and is a new type of pollutant, which comes from the wastewater of medicine, animal husbandry and aquaculture industry. Due to its biological toxicity, it is difficult to remove by existing sewage treatment facilities, so after wastewater treatment, most of sulfonamides and their metabolites are still discharged into environmental water bodies, eventually threatening the ecosystem and human health. Persulfate oxidation can generate highly active free radicals through a variety of activation methods, or can selectively degrade specific pollutants through non-free radical pathway...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J27/24C02F1/72C02F101/38
CPCB01J27/24C02F1/722C02F1/725C02F2209/02C02F2209/06C02F2209/44C02F2101/40Y02W10/37
Inventor 李宁余洋甄志禄陈冠益颜蓓蓓程占军詹林山
Owner HEBEI CONSTR GRP CO LTD