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

Diesel adsorbent and preparation method thereof

An adsorbent and diesel technology, which is applied in the field of diesel adsorbent and its preparation, can solve the problems of low restoration rate of biological methods, oil spill restriction, secondary pollution, etc., so as to achieve high-value utilization, reduce impact, and save resources Effect

Active Publication Date: 2021-04-23
ZHEJIANG OCEAN UNIV
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical methods are easy to cause secondary pollution, while biological methods have a low remediation rate, which makes them very limited in cleaning up oil spills

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
  • Diesel adsorbent and preparation method thereof
  • Diesel adsorbent and preparation method thereof
  • Diesel adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The preparation of embodiment 1 diesel oil adsorbent

[0057] (1) Crab shell pretreatment

[0058] Scrub 50g of crab shells, dry, grind and crush them through a 100-mesh sieve, soak in 500ml of 6% hydrochloric acid solution at 30°C for 4 hours, wash until neutral, then soak in 500ml of 6% sodium hydroxide solution at 90°C for 2 hours, Then soak in 500ml 50% sodium hydroxide solution at 90°C for 9 hours, wash until neutral, and dry to obtain 16g of pretreated crab shell powder;

[0059] (2) Preparation of pyrolysis biochar

[0060] Put 16g of dried and pulverized crab shell powder in step (1), add water and acetic acid, place it in the reaction kettle according to the weight ratio of crab shell powder: water: acetic acid = 1:5:5, compact the lid tightly and place it in the oven Pyrolysis at 180°C for 10 hours; get 2.8g of biochar after pyrolysis;

[0061] (3) Preparation of diesel adsorbent

[0062] Centrifuge 2.8 g of pyrolyzed biochar prepared in step 2) at 5000 r / ...

Embodiment 2

[0065] Embodiment 2 diesel oil adsorbent is to the adsorption of diesel oil (different adsorption time)

[0066] 1) get the diesel oil sorbent 0.01g among the embodiment 1 and 100mL concentration is the diesel oil waste water solution mixing of 6g / L;

[0067] 2) By adding 0.1mol / L hydrochloric acid or 0.1mol / L sodium hydroxide, the pH value of the mixed solution is adjusted to 7, and adsorbed at room temperature for different times; the mixed solution after adsorption is obtained;

[0068] 3) Centrifuge the mixed solution after adsorption at 5000r / min for 10min, take the supernatant to measure its OD value, calculate the adsorption capacity and adsorption rate of diesel oil by formula (1)(2), the results are shown in Table 1 and Figure 5 shown.

[0069] It can be seen from Table 1 that the adsorption of diesel oil increases rapidly first, and reaches adsorption equilibrium at 180 minutes, with a maximum adsorption rate of 80.1%.

[0070] Table 1

[0071] Adsorpti...

Embodiment 3

[0072] Embodiment 3 The adsorption of diesel oil adsorbent to diesel oil (different adsorbent dosage)

[0073] 1) get the diesel oil sorbent 0.005g, 0.01g, 0.015g, 0.02g, 0.025g in embodiment 1 and mix with 100mL concentration respectively the diesel oil waste water solution of 6g / L;

[0074] 2) Adjust the pH value of the mixed solution to 7 by adding 0.1mol / L hydrochloric acid or 0.1mol / L sodium hydroxide, and adsorb at room temperature for 180min;

[0075] 3) Centrifuge the mixed solution after adsorption at 5000r / min for 10min, take the supernatant to measure its OD value, calculate the adsorption capacity and adsorption rate of diesel oil by formula (1) (2), the results are shown in Table 2 and Image 6 shown.

[0076] It can be seen from Table 2 that in the range of 0.005-0.025g, with the increase of the amount of diesel adsorbent, the adsorption capacity of diesel adsorbent to diesel increases sharply, and then gradually tends to be flat.

[0077] Table 2

[0078] ...

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

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention relates to a diesel oil adsorbent, a preparation method thereof and a diesel oil adsorption method. The diesel oil adsorbent is prepared from crab shells through a hydrothermal carbonization technology, is black powder in appearance, has the pore diameter of 3-20 nm, the pore volume of 0.0763 cm<3> / g and the specific surface area of 17.01 m<2> / g, has diffraction peaks of 23 degrees and 39 degrees through analysis of an X-ray chromogenic spectrometer, andis obviously enhanced in carapace peak at 19 degrees, and an infrared spectrum shows that the diesel oil adsorbent has absorption peaks at 3259.6 cm<-1>, 2358.9 cm<-1>, 1668.4 cm<-1>, 1377.1 cm<-1>, 1072.4 cm<-1> and 893.04 cm<-1>. The diesel oil adsorbent provided by the invention has rich pores and oxygen-containing functional groups, can efficiently adsorb diesel oil, and has a maximum removal rate of 80.1%; and meanwhile, safety and no toxicity are realized, the use is convenient, and secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of adsorbents, in particular to a diesel adsorbent and a preparation method thereof. Background technique [0002] Diesel is formed by mixing various complex hydrocarbons and is a light petroleum product. The use of diesel in diesel engines of vehicles and ships is the most extensive and largest. With the rapid advancement of science and technology, the connection between the world will inevitably become closer and closer, so the demand for transportation will also increase rapidly, so the demand for diesel oil will also continue to increase accordingly. However, in many different steps such as oil refining and transportation, a huge amount of water pollution will be caused. The main source of pollution is oil and its derivatives accidentally leaked on the way. This kind of wastewater is called oily wastewater. Oily wastewater has huge hazards, and it will have a very bad negative impact on humans, animals...

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): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/40C02F103/08
CPCB01J20/20B01J20/28033B01J20/28059B01J20/28071B01J20/28083C02F1/283C02F1/40B01J2220/4881C02F2103/08
Inventor 纪丽丽韩笑郭健王亚宁蔡璐
Owner ZHEJIANG OCEAN 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