Modified peanut shell adsorbent for treating sunset yellow dye wastewater and its preparing method and application thereof

A technology for dye wastewater and peanut shells, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of cumbersome operation, high cost, and large energy consumption, and achieve enhanced adsorption effect and reduced Treatment cost, effect of physical strength improvement

Inactive Publication Date: 2015-08-05
CHONGQING TECH & BUSINESS UNIV
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Sunset yellow, also known as sunset red, sunset red, orange, edible yellow No. 3, is an azo pigment. The existing technology shows that azo compounds can be metabolized in the body to generate mutagen precursors --- aromatic amine compounds. The benzene ring in the structure has a strong inhibitory effect on organisms. Therefore, it is difficult to use biological methods to degrade sunset yellow into small inorganic molecules, and further advanced treatmen

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
  • Modified peanut shell adsorbent for treating sunset yellow dye wastewater and its preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of embodiment 1 peanut shell epoxy cellulose ether intermediate

[0027] (1) Peanut shells are washed and pulverized, and passed through a 40-mesh sieve;

[0028] (2) Take the sieved peanut shell powder, add epichlorohydrin whose volume is 12.5 times the weight of the peanut shell powder, mix well, then add NaOH solution to react, filter after the reaction, wash with water until neutral, and dry. Obtain an epoxy-based cellulose ether intermediate; the weight ratio of the content of NaOH in the NaOH solution to the amount of peanut shell powder added is 1:1.8; the temperature of the reaction is 40°C, and the reaction time is 4h; the drying Drying means drying at 50-70°C.

Embodiment 2

[0029] Embodiment 2 Influence of reaction time on the adsorption effect of adsorbent in the process of generating adsorbent by peanut shell epoxy cellulose ether intermediate

[0030] Get 2.0g of the peanut shell epoxy cellulose ether intermediate obtained according to Example 1, after mixing with ethylenediamine in a ratio of 1:1 (w / v), add Na 2 CO 3 solution, Na 2 CO 3 Na in solution 2 CO 3 The weight ratio of the content of epoxy cellulose ether intermediate to the added amount of epoxy cellulose ether is 1:0.53, react at 65°C for 1-5h, filter, wash with water until neutral, and dry at 50-70°C to obtain modified Peanut shell sunset yellow dye adsorbent.

[0031] Accurately weigh 0.1 g of the above-mentioned modified peanut shell adsorbents prepared under different reaction times, add 30 mL of sunset yellow solution with a concentration of 200 mg / L, adjust the pH to about 2.0, and place them in a constant temperature water bath shaker. Shake for 15 hours at a speed of ...

Embodiment 3

[0035] Example 3 Influence of reaction temperature on the adsorption effect of adsorbent in the process of generating adsorbent from peanut shell epoxy cellulose ether intermediate

[0036] Get 2.0g of the peanut shell epoxy cellulose ether intermediate obtained according to Example 1, mix it with ethylenediamine in a ratio of 1:1 (w / v), add 0.1mol / L Na 2 CO 3 100 mL of the solution was reacted at 45-75°C for 2 hours, filtered, washed with water until neutral, and dried at 50-70°C to obtain the modified peanut shell sunset yellow dye adsorbent.

[0037] Accurately weigh 0.1 g of the above-mentioned modified peanut shell adsorbent prepared at different reaction temperatures, add 30 mL of sunset yellow solution with a concentration of 200 mg / L, adjust the pH to about 2.0, place in a constant temperature water bath shaker, and Shake for 15 hours at a speed of 150 rpm, measure the concentration of sunset yellow in the residual liquid, and calculate the removal rate. The results a...

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 modified peanut shell adsorbent for treating sunset yellow dye wastewater and a preparing method and application thereof. The preparing method includes: washing, crushing and screening peanut shells; adding epoxy chloropropane into the screened peanut shell powder, mixing them well, adding NaOH solution to allow reaction, performing filtering, washing and drying after reaction so as to obtain epoxy cellulose ether intermediate; mixing the epoxy cellulose ether intermediate and ethylene diamine, adding Na2CO3 solution to allow reaction, performing filtering, washing and neutralizing after reaction, and performing drying to obtain the modified peanut shell adsorbent. By modifying the peanut shells with the epoxy chloropropane and the ethylene diamine, the physical strength of the modified peanut shell adsorbent is improved, the number of surface active functional groups is greatly increased, and adsorption effect of the peanut shells is enhanced. Additionally, wastewater is disposed via the peanut shells, disposing cost of the wastewater is effectively reduced, the great volume of existing low-cost green resources is made use, and a novel way to comprehensively use agricultural wastes is provided.

Description

technical field [0001] The invention relates to a modified peanut shell adsorbent, in particular to a modified peanut shell adsorbent for treating sunset yellow dye wastewater, a preparation method and application thereof. Background technique [0002] my country produces about 6 million tons of peanut pods annually, and about 2 million tons of peanut shells are produced during the peanut processing process. Only a small part of these peanut shells are used as raw materials for fiberboards, and most of the others are left idle or burned as fuel, thereby Cause a large amount of waste of resources, so people begin to seek the rational utilization way of peanut shell. Considering that the peanut shell has a high porosity and a large specific surface area, and the lignin, cellulose, hemicellulose and other components contained in the peanut shell contain active functional groups such as hydroxyl and carboxyl on the surface, therefore, people use it as an adsorbent. However, if i...

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): B01J20/24B01J20/30C02F1/28C02F1/58
Inventor 宋应华靳春萍许惠
Owner CHONGQING TECH & BUSINESS UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap