Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of lanthanum-loaded attapulgite dephosphorization adsorbent

A technology of attapulgite and phosphorus adsorbent, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of low pollutant adsorption capacity and few active adsorption sites, etc. Good, excellent adsorption capacity, strong recyclability effect

Pending Publication Date: 2021-06-29
深圳市南科环保科技有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the bottleneck problem of mineral material phosphorus removal adsorbents with few active adsorption sites and low pollutant adsorption capacity existing in the prior art, the present invention provides a preparation method of lanthanum-loaded attapulgite phosphorus removal adsorbent

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
  • Preparation method and application of lanthanum-loaded attapulgite dephosphorization adsorbent
  • Preparation method and application of lanthanum-loaded attapulgite dephosphorization adsorbent
  • Preparation method and application of lanthanum-loaded attapulgite dephosphorization adsorbent

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0045] The embodiment of the present invention provides a preparation method of a lanthanum-loaded attapulgite phosphorus-removing adsorbent, comprising the following steps:

[0046] S1. Attapulgite material pretreatment: attapulgite is calcined at a temperature of 700-800°C for 4-5 hours to obtain attapulgite heat-activated material PAL-H.

[0047] S2, Lanthanum ion pretreatment: use NaOH solution to adjust La(NO 3 ) 3 The pH value of the solution was then placed in an ultrasonic cell disruptor for ultrasonic treatment for 10-30 minutes to obtain La(OH) 3 load solution.

[0048] S3. Add the attapulgite thermally activated material PAL-H to La(OH) 3 After the solution was loaded, the reaction was carried out under the action of ultrasound, and then the reaction was carried out under the condition of a water bath to obtain a cloudy solution. After the reaction is completed, the turbid solution is centrifuged, and the precipitate is washed and filtered. The filtered precipi...

Embodiment 1

[0059] The embodiment of the present invention provides a preparation method of a lanthanum-loaded attapulgite phosphorus-removing adsorbent. The lanthanum-loaded attapulgite composite material in this embodiment is prepared by adding La(OH) to the attapulgite sample PAL-H 3 made in solution. The quality of PAL-H in the lanthanum-loaded attapulgite composite material is 1g, and the specific preparation method includes the following steps:

[0060] S1. Pretreatment of attapulgite material: 1.00 g of natural attapulgite material was roasted at 500° C. for 2 hours to obtain attapulgite thermally activated material PAL-H.

[0061] S2, La(OH) 3 The configuration of the loading solution: 50mL 0.1mol / L La(NO 3 ) 3 The solution was placed on a constant temperature magnetic stirrer, the rotation speed of the magnetic stirrer was set to 120 rpm, and 1 mol / L NaOH solution was added dropwise until the pH value of the reaction solution reached 10. Immediately afterwards, the reaction s...

Embodiment 2

[0064] The embodiment of the present invention provides a preparation method of a lanthanum-loaded attapulgite phosphorus-removing adsorbent. The lanthanum-loaded attapulgite composite material in this embodiment is prepared by adding La(OH) to the attapulgite sample PAL-H 3 made in solution. The quality of PAL-H in the lanthanum-loaded attapulgite composite material is 1g, and the specific preparation method includes the following steps:

[0065] S1. Pretreatment of attapulgite material: 1.00 g of natural attapulgite material was roasted at 600° C. for 3 hours to obtain attapulgite thermally activated material PAL-H.

[0066] S2, lanthanum ion pretreatment: 50mL 0.1mol / L La(NO 3 ) 3 The solution was placed on a constant temperature magnetic stirrer, the rotation speed of the magnetic stirrer was set to 120 rpm, and 1 mol / L NaOH solution was added dropwise until the pH value of the reaction solution reached 10. Immediately thereafter, the reaction solution was placed in an ...

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 relates to a preparation method of a lanthanum-loaded attapulgite dephosphorization adsorbent. The method comprises the following steps: S1, roasting an attapulgite material to obtain an attapulgite thermal activation material PAL-H; S2, adding an alkali liquor into a soluble lanthanum salt solution, adjusting the pH value, and carrying out ultrasonic treatment to obtain a La(OH)3 loaded solution; and S3, adding the attapulgite thermal activation material PAL-H obtained in the step S1 into the La(OH)3 loaded solution obtained in the step S2, and carrying out a reaction to obtain the lanthanum-loaded attapulgite composite material PAL-La. The adsorbent prepared by the preparation method provided by the invention can provide abundant binding sites, has excellent adsorption capacity on phosphate, and does not cause the problem of pore blockage of the adsorbent.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a preparation method and application of a lanthanum-loaded attapulgite phosphorus-removing adsorbent. Background technique [0002] Excess phosphorus (P) can trigger eutrophication in lakes and rivers, which in turn leads to dangerous algal blooms, dissolved oxygen depletion, and fish kills, seriously disrupting the ecological balance of organisms in water bodies and harming public health. Therefore, viable technologies are needed to inhibit the entry of phosphorus into natural water bodies. In the prior art, water body phosphorus removal technologies mainly include chemical precipitation technology, biological treatment technology, membrane treatment technology and adsorption technology. Among them, chemical precipitation phosphorus removal technology is mostly suitable for the initial treatment of high-concentration phosphorus-containing wastewater, an...

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): B01J20/12B01J20/30C02F1/28C02F101/10
CPCB01J20/12B01J20/0207C02F1/281C02F2101/105C02F2103/007
Inventor 孔令超阎沁琳徐嘉玉郑春苗李晶
Owner 深圳市南科环保科技有限公司