Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for removing tetracycline in wastewater

A technology for tetracycline and waste water, which is applied in chemical instruments and methods, water pollutants, special compound water treatment, etc., can solve the problems of complicated preparation process, high preparation cost, and low use efficiency, and achieve good effect, low cost, and reduced Effects of pollution and impact

Inactive Publication Date: 2020-12-18
QUANZHOU NORMAL UNIV +1
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high preparation cost, complex preparation process and low efficiency of photocatalytic materials used in the treatment of tetracycline wastewater, the present invention proposes a method for removing tetracycline in wastewater, which utilizes waste biomass (egg shells, sea oyster shells, etc.) ) as the raw material, and make it into powder through simple treatment, and then use this material to effectively degrade tetracycline hydrochloride under the action of light, which has the advantages of rich material sources, simple operation, green environmental protection, etc.

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 removing tetracycline in wastewater
  • Method for removing tetracycline in wastewater
  • Method for removing tetracycline in wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Wash the discarded egg shells with clean water, then soak them in 0.1 M NaOH solution at 30 °C for 20 h, take them out, wash and dry them, grind them into powder, and sieve them through a 50-mesh sieve for later use;

[0024] (2) Take 10 mg of prepared egg shell powder, add it to 50 mL of wastewater containing 10 mg / L tetracycline, and stir to mix evenly;

[0025] (3) The mixed solution in step (2) was first reacted for 30 min under dark reaction conditions, and then treated with sunlight for 120 min.

[0026] After testing, the degradation rate of tetracycline in wastewater is 94%, which proves that it can effectively reduce the content of tetracycline in wastewater.

Embodiment 2

[0028] (1) Wash the discarded egg shells with clean water, then soak them in 0.5 M NaOH solution at 40 °C for 15 hours, take them out, wash and dry them, grind them into powder, and sieve them through a 100-mesh sieve for later use;

[0029] (2) Take 20 mg of prepared egg shell powder, add it to 50 mL of wastewater containing 20 mg / L tetracycline, and stir with a magnetic force;

[0030] (3) The mixed solution in step (2) was first reacted for 30 min under dark reaction conditions, and then treated with sunlight for 120 min.

[0031] After testing, the degradation rate of tetracycline in wastewater is 95%, which proves that it can effectively reduce the content of tetracycline in wastewater.

Embodiment 3

[0033] (1) Wash the discarded egg shells with clean water, then soak them in 1.0 M NaOH solution at 60 °C for 12 hours, take them out, wash them, dry them, grind them into powder, and sieve them through a 200-mesh sieve for later use;

[0034] (2) Take 30 mg of prepared egg shell powder, add it to 50 mL of wastewater containing 30 mg / L tetracycline, and stir to mix evenly;

[0035] (3) The mixed solution in step (2) was first reacted for 30 min under dark reaction conditions, and then treated with sunlight for 120 min.

[0036] figure 2 It is the X-ray diffraction pattern of the prepared egg shell powder. As can be seen from the figure, its main component is CaCO 3 .

[0037] Step (3) During the treatment process, measure the content of tetracycline in the solution every 10 minutes, and draw the curve of the content changing with time, the results are as follows image 3 . From image 3 It can be seen that with the prolongation of the light time, the content of tetracyc...

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 removing tetracycline in wastewater. The method comprises the following steps: cleaning waste biomass such as egg shells, oyster shells, scallop shells, duck egg shells and the like with clear water, soaking the waste biomass in a NaOH solution, cleaning, drying, and grinding into powder; and adding the prepared powder into tetracycline-containing wastewater, carrying out magnetic stirring, carrying out a reaction for 30 min under dark reaction conditions, and carrying out light adding treatment for 120 min to achieve effective removal of tetracycline in the wastewater. The method has the advantages of easily available materials, low cost, realization of recycling of biological wastes, simple preparation process and equipment requirements, mild reactionconditions, and no pollution. Through detection, the degradation rate of the tetracycline-containing wastewater treated by the method disclosed by the invention can reach 94-98%.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to a wastewater treatment method, more specifically, to a method for removing tetracycline in wastewater. Background technique [0002] Tetracycline is a broad-spectrum antibiotic widely used in medicine. In addition, it is used as a growth hormone in animals. However, it cannot be fully absorbed or transformed by objects after use. As a result, more than 50% of tetracyclines enter the environment in the form of metabolites. Tetracycline residues and their metabolites still have certain biological activity, which will not only cause biological toxicity to aquatic and terrestrial animals, but also enrich, concentrate and spread through the food chain, causing serious harm to human health. Therefore, the removal of tetracycline residues from the environment is of great importance to the ecological environment and human health. [0003] At present, many methods can be used to remove te...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/32C02F101/38
CPCC02F1/30C02F1/32C02F2101/38C02F2305/10
Inventor 刘明焕施伟章曹丽平杨大鹏
Owner QUANZHOU NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com