method for preparing aminopropyl-MCM-41 for adsorbing heavy metal ions in waste water

A -MCM-41, heavy metal ion technology, applied in the field of aminopropyl-MCM-41 adsorbent and its preparation, can solve the problems of small adsorption capacity, low selectivity and the like, achieve short production cycle, simple process and low price Effect

Inactive Publication Date: 2011-02-16
NANKAI UNIV +1
View PDF1 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used commercial adsorbent is activated carbon, but its adsorption capacity is small and its select

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 aminopropyl-MCM-41 for adsorbing heavy metal ions in waste water
  • method for preparing aminopropyl-MCM-41 for adsorbing heavy metal ions in waste water
  • method for preparing aminopropyl-MCM-41 for adsorbing heavy metal ions in waste water

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1

[0013] First, 3ml of silane coupling agent KH-550 was dissolved in 50ml of ethanol at room temperature, stirred evenly, then 5g of calcined mesoporous molecular sieve MCM-41 was added, and the product was refluxed in a water bath at 70 °C for 8 hours. Wash with ethanol and dry in a vacuum oven at 60°C to obtain aminopropyl-MCM-41.

[0014] The invention adopts a static adsorption method (batch method) to measure the removal rate and adsorption amount of mercury ions and lead ions by the adsorbent. Specific steps are as follows:

[0015] Add 50ml of mercury ion and lead ion solution with a certain initial concentration to a 100ml dry conical flask, place it in a constant temperature water bath at 25°C, and then accurately weigh a certain amount of the adsorbent aminopropyl-MCM-41 and place it in the solution. , seal the conical flask, stir and adsorb at constant temperature for 2 hours, filter with a sand core funnel, measure the concentration of mercury io...

Example Embodiment

[0020] Example 2

[0021] The initial mercury ion concentration was 100 mg / L, and other conditions were the same as those in Example 1. Experiments showed that the removal rate under this condition was 90.92%, and the adsorption amount was 45.46 mg / g.

Example Embodiment

[0022] Example 3

[0023] The initial mercury ion concentration was 150 mg / L, and other conditions were the same as those in Example 1. The experiment showed that the removal rate under this condition was 79.00%, and the adsorption amount was 59.25 mg / g.

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
Adsorption capacityaaaaaaaaaa
Adsorption capacityaaaaaaaaaa
Adsorption capacityaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for preparing an adsorbent for removing mercury ions, lead ions, and other heavy metal ions from waste water. The method comprises the following steps of: dissolving a silane coupling agent KH-550 in alcohol, and then adding a certain quantity of roasted mesoporous molecular sieves MCM-41; refluxing for 6-12 hours in a water bath at 60-80 DEG C; centrifuging and separating a product, and then washing with alcohol; and drying in vacuum at 40-80 DEG C to obtain the aminopropyl functional MCM-41. The invention has the characteristics of simple process, low raw material price, safety and low required equipment cost. The adsorbent has a three-dimensional pore canal structure and has excellent adsorption effect on the mercury ions and the lead ions in the waste water.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an aminopropyl-MCM-41 adsorbent for removing heavy metal ions in wastewater and a preparation method thereof. Background technique [0002] In recent years, environmental pollution has become increasingly severe, and the discharge of heavy metal ions has caused serious harm to humans and other organisms. Especially mercury ions and lead ions can strongly interact with proteins and enzymes in the human body, making them inactive and causing chronic poisoning. How to effectively remove heavy metal ions in wastewater has become a serious practical problem faced by modern society. The commonly used methods for removing mercury ions and lead ions in wastewater mainly include sulfuration method, adsorption method, ion exchange method, etc. Among them, the adsorption process has the advantages of simple operation, low cost, and low energy consumption, so it is ...

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): C02F1/28C02F101/20B01J20/22B01J20/30
Inventor 李伟杨欣欣王寰付斌韩冲
Owner NANKAI 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