Preparation method and application of sulfydryl palm bark adsorbent

A thiol palm, palm bark technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effects of low production cost, good desorption performance, and easy control of conditions

Inactive Publication Date: 2013-07-10
UNIV OF JINAN
View PDF8 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with the application number: 201110276212.9 discloses the preparation method and application of mercapto-flax. It is characterized in that: in a corked Erlenmeyer flask, it is added according to the following composition mass percentage, thioglycolic acid: 45-52%, tetrahydrofuran: 35-40% , degummed flax: 23~30%, glacial acetic acid: 1~1.5%, concentrated sulfuric acid: 0.15~0.3%, stoppered, at 50~60℃, reflux under stirring for 4~6 hours, then wash with deionized wate

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Palm bark pretreatment: Wash the palm bark with water to remove soil and impurities, put it in a container and soak it in water for 7 days to remove non-fibrous substances, cut the palm bark into small pieces, wash with water, and vacuum dry Pulverize, sieve with 80 mesh sieves, obtain pretreatment palm bark;

[0019] (2) Palm bark alkalization treatment: soak the pretreated palm bark in 5% NaOH aqueous solution for 24 hours, boil for 1 hour, wash with deionized water to neutral after cooling, and dry at 75°C after suction filtration dry, to obtain alkalized palm bark;

[0020] (3) Preparation of mercapto palm bark adsorbent: In a stoppered Erlenmeyer flask, add 20 mL of thioglycolic acid and 15 mL of tetrahydrofuran, add 0.5 mL of glacial acetic acid, add two drops of concentrated sulfuric acid, mix well, add 10 g of alkalized palm tree Skin, plugged, at 40°C, react statically for 50 h, then wash with deionized water, suction filter until the filtrate is neutral, ...

Embodiment 2

[0022] (1) Palm bark pretreatment: Wash the palm bark with water to remove soil and impurities, put it in a container and soak it in water for 7 days to remove non-fibrous substances, cut the palm bark into small pieces, wash with water, and vacuum dry Pulverize, sieve with 80 mesh sieves, obtain pretreatment palm bark;

[0023] (2) Palm bark alkalization treatment: soak the pretreated palm bark in 2% NaOH aqueous solution for 30 hours, boil for 1 hour, wash with deionized water to neutral after cooling, and dry at 70°C after suction filtration dry, to obtain alkalized palm bark;

[0024] (3) Preparation of mercapto palm bark adsorbent: In a stoppered Erlenmeyer flask, add 40 mL of thioglycolic acid and 40 mL of tetrahydrofuran, add 2.0 mL of glacial acetic acid, add 3 drops of concentrated sulfuric acid, mix well, add 30 g of alkalized palm tree Skin, plugged, at 40°C, react statically for 60 h, then wash with deionized water, filter with suction until the filtrate is neutra...

Embodiment 3

[0026] (1) Palm bark pretreatment: Wash the palm bark with water to remove soil and impurities, put it in a container and soak it in water for 10 days to remove non-fibrous substances, cut the palm bark into small pieces, wash with water, and vacuum dry Pulverize, sieve with 80 mesh sieves, obtain pretreatment palm bark;

[0027] (2) Palm bark alkalization treatment: soak the pretreated palm bark in 8% NaOH aqueous solution for 24 hours, boil for 0.5 hours, wash with deionized water after cooling until neutral, and filter at 75°C drying to obtain alkalized palm bark;

[0028] (3) Preparation of mercapto palm bark adsorbent: In a stoppered Erlenmeyer flask, add 20 mL of thioglycolic acid and 25 mL of tetrahydrofuran, add 1.0 mL of glacial acetic acid, add two drops of concentrated sulfuric acid, mix well, add 25 g of alkalized palm tree Skin, plugged, at 45°C, static reaction for 48 h, then washed with deionized water, suction filtered until the filtrate was neutral, washed wi...

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 preparation method and an application technology of a sulfydryl palm bark adsorbent. The method is characterized by comprising the following steps of: adding 30 to 45 mass percent of thioglycolic acid, 25 to 40 mass percent of tetrahydrofuran, 20 to 35 mass percent of alkalized palm bark, 0.5 to 2.5 mass percent of glacial acetic acid and 0.15 to 0.3 mass percent of concentrated sulfuric acid into a triangular flask with a plug, wherein the mass percent of the components is 100%; plugging the triangular flask; carrying out a stationary reaction for 48-60 hours at the temperature of 40-45 DEG C; then washing with deionized water and filtering under vacuum till the filtrate is neutral; washing with a small amount of ethanol; and drying in an oven at the temperature of 35-45 DEG C so as to obtain the sulfydryl palm bark adsorbent. The sulfydryl palm bark adsorbent has high metal iron absorbability and sulfydryl characteristics, and can absorb and elute various metal ions in water; the sulfydryl palm bark adsorbent is high in absorption efficiency and speed and good in physical, chemical and mechanical stability; due to the high regenerability of the sulfydryl palm bark adsorbent, the repeated use times of the sulfydryl palm bark adsorbent is higher than that of sulphydryl cotton by 40 percent; the cost is saved; and the environment pollution is avoided.

Description

technical field [0001] The invention relates to a preparation method and application technology of an adsorbent for metal ions in a water system, in particular to a preparation method and application technology of a mercapto palm bark adsorbent. Background technique [0002] Palm tree is a perennial evergreen tree plant, up to 7 meters high; the trunk is erect, unbranched, and covered by a brown coat formed by leaf sheaths; therefore, the fibers of the palm bark are very long and strong, and are usually used to make mattresses , is one of the most precious ecological resources and a renewable resource. At present, palm trees are widely planted in the area south of the Yangtze River and are very precious long-fiber raw materials. The application of this natural polymer material to make adsorption has the characteristics of natural, green and biodegradable. [0003] Since 1971, Nishisueo et al. in Japan first connected thiol groups to the macromolecular chains of absorbent c...

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): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 李慧芝许崇娟庄海燕
Owner UNIV OF JINAN
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