Application and preparation method of a biomass adsorbent modified by straw
A technology of biomass adsorbent and adsorbent, which is applied in separation methods, chemical instruments and methods, and other chemical processes, can solve the problem of high cost of activated carbon, achieve high adsorption efficiency, improve adsorption capacity, and improve the effect of capacity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0017] The preparation method of the above-mentioned biomass adsorbent modified by straw comprises the following steps:
[0018] (1) Straw pretreatment: wash and pulverize the straw, sieve it, and dry it in a vacuum oven;
[0019] (2) Alkalinization of straw: Disperse the dried straw in lye, take it out after ultrasonic vibration for 10-15min, put it in a constant temperature water bath, stir it at a constant temperature of 60-75°C for 1-2h, filter and wash to neutrality, then centrifuged and then placed in an oven to dry at 80°C to constant weight and set aside;
[0020] (3) Modification of straw: Weigh 2 g of straw after alkalization treatment, add 20 mL of glacial acetic acid, 2-8 g of acetic anhydride, 0.1-0.2 g of catalyst, and stir at a constant temperature of 60-80 °C for 4-6 h; After natural cooling, the straw is washed, and finally dried at 60° C. to a constant weight to obtain a straw-modified biomass adsorbent.
[0021] Further, the straw in step (1) is corn straw...
Embodiment 1
[0031] The preparation method of the biomass adsorbent utilizing straw modification in this embodiment is:
[0032] (1) Straw pretreatment: Wash and pulverize the straw, pass it through an 80-mesh sieve, take out the part under the sieve, put it in a vacuum oven, dry it at 60°C for 24 hours, and take it out.
[0033] (2) Alkalinization of straw: Take 5 g of straw powder obtained in step (1), disperse it in 100 mL of NaOH solution with a mass fraction of 7%, take it out after ultrasonic vibration for 10 min, put it in a constant temperature water bath, and heat it at 75 ° C Stir at constant temperature for 1 hour, filter, wash until neutral, centrifuge, put in an oven, and dry at 80°C until constant weight.
[0034] (3) Modification of straw: Weigh 2 g of straw after alkalization treatment in step (2) and put it into a three-necked flask, add 20 mL of glacial acetic acid, 6 g of acetic anhydride, and 0.2 g of catalyst p-toluenesulfonic acid at 60°C Stir at constant temperature...
Embodiment 2
[0040] The preparation method of the biomass adsorbent utilizing straw modification in this embodiment is:
[0041] (1) Straw pretreatment: Wash and pulverize the straw, pass it through a 100-mesh sieve, take out the part under the sieve, place it in a vacuum oven, dry it at 50°C for 24 hours, and take it out.
[0042] (2) Alkalinization of straw: Take 5 g of the straw powder obtained in step (1), disperse it in 100 mL of NaOH solution with a mass fraction of 5%, take it out after ultrasonic vibration for 10 min, put it in a constant temperature water bath, and heat it at 60°C Stir at constant temperature for 2 hours, filter, wash, and centrifuge, then place in an oven, and dry at 80°C until constant weight.
[0043](3) Modification of straw: Weigh 2 g of straw after alkalization treatment in step (2) and put it into a three-necked flask, add 20 mL of glacial acetic acid, 4 g of acetic anhydride, 0.1 g of catalyst perchloric acid, and stir at a constant temperature for 5 h at ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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