Method for preparing, using and regenerating Fe-Mn-Al composite oxide/zeolite antimony removal adsorbent

A composite technology of oxide and aluminum, applied in chemical instruments and methods, separation methods, filter regeneration and other directions, can solve the problems of difficult to popularize and apply on a large scale, a large amount of antimony-containing waste residue, complicated preparation process, etc., and the method is simple and easy to implement. , Excellent water purification efficiency, simple preparation process

Inactive Publication Date: 2012-07-11
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The precipitation method has a simple process and is easy to operate, but it is only suitable for high-concentration industrial wastewater, and produces a large amount of antimony-containing waste residue, which is likely to cause secondary pollution
3) The ion exchange method uses ion exchange resin as the adsorption exchange agent. This method is expensive and difficult to apply on a large scale in engineering practice.
The iron oxide

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
  • Method for preparing, using and regenerating Fe-Mn-Al composite oxide/zeolite antimony removal adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1: Preparation of iron-manganese-aluminum composite oxide / zeolite adsorbent for removing antimony: Weigh 27.8g FeSO 4 ·7H 2 O, 5.27g KMnO 4 , 24.3gAl 2 (SO 4 ) 3 ·7H 2 O, respectively dissolved in 500ml water. m Fe : M Mn 3:1, m Al : M Mn Is 3:2, (m Fe +m Al ): m OH - It is 1:1. Dissolve 6g NaOH in the potassium permanganate solution, then add the mixed solution of ferrous sulfate and aluminum sulfate, and mix 200g of zeolite (BET 200m 2 / g, 60 mesh or more) was added to the mixed solution, continued to stir for 30 minutes, and then stood and aged at room temperature for 16 hours. After aging, skim off the supernatant, then add a small amount of dilute sodium hydroxide solution to neutralize it, then add 1000ml of deionized water, stir and wash for 15 minutes, filter for solid-liquid separation, and continue to add solid adsorbent Wash with deionized water 4 times, after separating the adsorbent, place it in an oven at 50-55°C for 3 hours, and heat to 100°C f...

Example Embodiment

[0031] Example 2: Preparation of iron-manganese-aluminum composite oxide / zeolite adsorbent for removing antimony: Weigh 19.1g FeCl 2 ·4H 2 O, 5.27g KMnO 4 , 22.9gAlCl 3 ·6H 2 O, respectively dissolved in 500ml water. m Fe : M Mn 3:1, m Al : M Mn Is 3:2, (m Fe +m Al ): m OH - It is 1:1. Dissolve 6g NaOH in the potassium permanganate solution, then add the mixed solution of ferrous chloride and aluminum chloride, and mix 300g of zeolite (BET 170m 2 / g, 30 mesh or more) is added to the mixed solution, continue to stir for 45 minutes, and then stand and age at room temperature for 24 hours. After aging, skim off the supernatant, then add a small amount of dilute sodium hydroxide solution to neutralize it, then add 1000ml of deionized water, stir and wash for 15 minutes, filter for solid-liquid separation, and continue to add solid adsorbent Wash with deionized water 4 times, after separating the adsorbent, place it in an oven at 50-55°C for 3 hours, and heat to 100°C for 4 hour...

Example Embodiment

[0033] Example 3: Preparation of iron-manganese-aluminum composite oxide / zeolite adsorbent for removing antimony: Weigh 27.8g FeSO 4 ·7H 2 O, 5.27g KMnO 4 , 22.9gAlCl 3 ·6H 2 O, respectively dissolved in 600ml water. m Fe : M Mn 3:1, m Al : M Mn Is 3:2, (m Fe +m Al ): m OH - It is 1:1. Dissolve 6g NaOH in the potassium permanganate solution, then add the mixed solution of ferrous chloride and aluminum chloride, and mix 260g of zeolite (BET 230m 2 / g, 60 mesh or more) was added to the mixed solution, continued to stir for 1 hour, and then stood and aged at room temperature for 24 hours. After aging, skim off the supernatant, add a small amount of dilute sodium hydroxide solution to neutralize it, then add 800ml of deionized water, stir and wash for 15 minutes, filter for solid-liquid separation, and continue to add solid adsorbent Wash with deionized water 4 times, after separating the adsorbent, place it in an oven at 45-55°C for 2 hours, heat up to 100°C for 4 hours, and o...

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 disclosed a method for preparing, using and regenerating novel antimony removing adsorbent-Fe-Mn-Al composite oxide/zeolite antimony removal adsorbent, belonging to the technical field of water treatment application. The Fe-Mn-Al composite oxide/zeolite antimony removal adsorbent also has oxidation and adsorption properties and has a moderate pore structure and rich active adsorption sites, therefore, excellent adsorption efficiency is provided to trivalent antimony and pentavalent antimony in a broad-spectrum pH range. The material can be used for removing antimony after being filled into an adsorption reactor and can be regenerated through a simple method after adsorption is saturated, and the operation is simple and practical.

Description

technical field [0001] The invention belongs to the field of materials for removing antimony and other pollutants in drinking water and industrial waste water by adsorption method, in particular to an iron-manganese-aluminum composite oxide antimony-removing adsorbent based on iron oxide, manganese oxide and aluminum oxide and its application method . Background technique [0002] Antimony is a widely distributed toxic element. Antimony is chronically toxic and carcinogenic to humans and organisms. Long-term drinking or exposure to low concentrations of antimony can cause fatal damage to the human liver and cardiovascular system. Many countries have set strict environmental standards for antimony. my country's latest drinking water standard stipulates that the concentration limit of antimony in drinking water is 5μg / L; the mandatory local pollutant discharge standard stipulates that the maximum allowable discharge concentration of antimony and its compounds is 0.65mg / L in t...

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): B01J20/18B01J20/30B01J20/34C02F1/28C02F1/58
Inventor 曲久辉徐伟吴鹍兰华春刘会娟巩文信刘锐平
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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