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

Solidago canadensis L. straw biochar, preparation method and application thereof in removing LAS of detergent waste water

A biochar and yellow flower technology, applied in chemical instruments and methods, water pollutants, and other chemical processes, can solve problems such as environmental pollution, large investment in equipment, secondary pollution, etc., and achieve simple environmental protection process, low preparation cost, The effect of strong adsorption capacity

Inactive Publication Date: 2019-01-25
HUNAN AGRICULTURAL UNIV
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the use of a large amount of anionic surfactant LAS, it has also brought a series of environmental pollution problems. Untreated LAS wastewater is directly thrown into the water to form foam, and the continuous accumulation in the water will affect the safety of the water environment.
[0003] At present, the methods for treating LAS in wastewater can be simply divided into physical methods, chemical methods, and biological methods. Due to the problems of large equipment investment, high operating costs, low concentration of LAS treatment and secondary pollution in these methods, it is necessary to seek low-cost Environmentally friendly, it is necessary for a method with a high removal rate of high-concentration LAS

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
  • Solidago canadensis L. straw biochar, preparation method and application thereof in removing LAS of detergent waste water
  • Solidago canadensis L. straw biochar, preparation method and application thereof in removing LAS of detergent waste water
  • Solidago canadensis L. straw biochar, preparation method and application thereof in removing LAS of detergent waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The branches and leaves of the collected mid-to-late Solidago canadensis were removed, and only the stalks were kept, washed with tap water, dried in an oven at 65°C for 12 hours, and then crushed through a 100-mesh sieve to obtain Solidago canadensis stem powder. The obtained Solidago canadensis stalk powder was placed in a muffle furnace, kept at 100°C for 1 hour, and then heated to 400°C at a rate of 10°C / min for carbonization for 2 hours. After cooling in the muffle furnace, take it out, soak it in 0.1mol / L HCl solution for 6 hours, filter it, wash it with distilled water until it is neutral, then filter it and dry it to constant weight, grind it through a 100-mesh sieve, and pack it into a bag for later use. Yellow flower stalk biochar. The SEM image of the prepared biochar is shown in figure 1 , see the Fourier transform infrared spectrum Figure 5 , from the SEM image of biochar, it can be seen that Solidago canadensis has rich pore structure inside after carbo...

Embodiment 2

[0039] The branches and leaves of the collected Solidago canadensis were removed, and only the stalk was kept, washed with tap water, dried in an oven at 65°C for 12 hours, and then crushed through a 100-mesh sieve to obtain the solidago canadensis stem powder. The obtained Solidago canadensis stalk powder was kept at 100°C for 1 hour in a muffle furnace, and then heated to 500°C at a rate of 10°C / min for carbonization for 2 hours. After cooling in the muffle furnace, take it out, soak it in 0.1mol / L HCl solution for 6 hours, filter it, wash it with distilled water until neutral, then filter it and dry it to constant weight, grind it through a 100-mesh sieve, and pack it into a bag for later use to obtain a Canadian branch Yellow flower stalk biochar. The SEM image of the prepared biochar is shown in figure 2 , see the Fourier transform infrared spectrum Figure 5 ,From figure 2It can be seen that there are many chaotic fragments inside the biochar at 500 °C and the pore ...

Embodiment 3

[0041] The branches and leaves of the collected Solidago canadensis were removed, and only the stalk was kept, washed with tap water, dried in an oven at 65°C for 12 hours, and then crushed through a 100-mesh sieve to obtain the solidago canadensis stem powder. Then keep the obtained Solidago canadensis stalk powder in the muffle furnace at a temperature of 100°C for 1h, then raise the temperature to 600°C for 2h at a heating rate of 10°C / min, and take it out at 0.1mol / min after cooling in the muffle furnace. Soak in L of HCl solution for 6 hours, filter, wash with distilled water until neutral, filter and dry to constant weight, grind through a 100-mesh sieve and pack into bags for later use to obtain solidago stalk biochar. The SEM image of the prepared biochar is shown in image 3 , see the Fourier transform infrared spectrum Figure 5 ,Depend on image 3 It can be clearly seen that the surface of biochar has a relatively regular microporous structure and the fragments on...

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 Solidago canadensis L. straw biochar, a preparation method and application thereof in removing LAS of detergent waste water. As the Solidago canadensis L. straw is used as the raw material of biochar, effective utilization of agricultural wastes can be achieved, prevention and control of alien invasive specie Solidago canadensis L. are developed effectively to realize turning harm into good. Besides, the biochar prepared by the method has high adsorption capacity, the process is environmentally friendly and simple, and equipment cost is low. The preparation method hassimple process, and the biochar has high adsorption rate to LAS of detergent waste water.

Description

technical field [0001] The invention relates to the field of biological carbon, in particular to solidago canadensis stalk biochar, a preparation method and its application in removing LAS in washing wastewater. Background technique [0002] Linear-Alkylbenzenesulfonic Acid (LAS), as an anionic surfactant, is the main component of synthetic detergents and has been widely used at home and abroad. Surfactants in general washing products account for about 20%, or even higher, in which the content of LAS can reach 600mg / L, and the amount that enters the human body through daily necessities, food, tableware and other residues can reach more than 10mg. Studies have shown that LAS is slightly toxic and will not cause harm to the human body and the environment in a small amount, but it will cause harm to varying degrees when it is excessive. For example, excessive LAS can dissolve microbial and invertebrate biofilms, affect enzyme activity, destroy protein structure, and endanger h...

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): B01J20/20B01J20/30C02F1/28C02F101/30
CPCB01J20/20B01J20/30C02F1/281C02F1/283C02F2101/301C02F2101/40Y02A90/40
Inventor 杨海君邓蓉蓉许云海刘亚宾吴依婷刘明沙游芳甘定宇
Owner HUNAN AGRICULTURAL 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