Preparation method of water body molybdate adsorbent based on solid waste steel slag

A solid waste, molybdate technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc. Inexpensive, wide-ranging effects

Inactive Publication Date: 2017-01-11
ANHUI UNIVERSITY OF TECHNOLOGY
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high operating cost, difficult operation and easy secondary pollution in the existing technology for removing molybdate from water, the present invention provides a method for preparing water molybdate...

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 of water body molybdate adsorbent based on solid waste steel slag
  • Preparation method of water body molybdate adsorbent based on solid waste steel slag
  • Preparation method of water body molybdate adsorbent based on solid waste steel slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put the desulfurized steel slag into clean water and rinse for 2 days, then grind, rinse, dry naturally, and screen to obtain 20g of steel slag with a particle size below 0.15mm. 1.0mol / L of H 2 SO 4 Add 50mL of the solution to the above steel slag, vibrate for 10h at a vibration speed of 200r / min, and then wash with water until it does not contain SO 4 2- , air-dried for later use; take 10 g of the above solid and put it into a 500 mL Erlenmeyer flask, and add it to 0.01 mol / L LaCl 3 ·6H 2 In 200mL of O solution, seal the Erlenmeyer flask and place it in a constant temperature oscillator at 35°C, shake at a speed of 200r / min for 2h, filter and collect the solid material; add the solid material to 200mL of 0.02mol / L CTMAB solution shake in a water bath at 25°C for 13 hours, filter and wash with deionized water until neutral, and dry the solid material in an oven at 100°C to obtain La-CTMAB modified steel slag 1.

Embodiment 2

[0037] Put the desulfurized steel slag into clean water and rinse for 2 days, then grind, rinse, dry naturally, and screen to obtain 20g of steel slag with a particle size below 0.15mm. 3.0mol / L of H 2 SO 4 Add 50mL of the solution to the above steel slag, vibrate for 8 hours at a vibration speed of 200r / min, and then wash with water until no SO 4 2- , air-dried for later use; take 10 g of the above solid and put it into a 500 mL Erlenmeyer flask, and add 0.01 mol / L LaCl 3 ·6H 2 O solution 200mL, seal the Erlenmeyer flask and place it in a constant temperature oscillator at 35°C, shake at a speed of 200r / min for 2h, filter and collect the solid material; add the solid material to 200mL of 0.03mol / L CTMAB solution , shake in a water bath at 30°C for 12h, filter and wash with deionized water until neutral, and dry the solid material in an oven at 100°C to obtain La-CTMAB modified steel slag 2.

Embodiment 3

[0039] Put the desulfurized steel slag into clean water and rinse for 2 days, then grind, rinse, dry naturally, and screen to obtain 20g of steel slag with a particle size below 0.15mm. 3.0mol / L of H 2 SO 4 Add 50mL of the solution to the above steel slag, vibrate for 8 hours at a vibration speed of 200r / min, and then wash with water until no SO 4 2- , air-dried for later use; take 10 g of the above solid into a 500 mL Erlenmeyer flask, and add 0.03 mol / L of LaCl 3 ·6H 2 O solution 200mL, seal the Erlenmeyer flask and place it in a constant temperature oscillator at 35°C, shake at a speed of 200r / min for 2h, filter and collect the solid material; add the solid material to 200mL of 0.04mol / L CTMAB solution , shaken in a water bath at 45°C for 15h, filtered, washed with deionized water until neutral, and dried in an oven at 100°C to obtain La-CTMAB modified steel slag 3.

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a water body molybdate adsorbent based on solid waste steel slag, belonging to the field of water body pollutant adsorbing materials. The preparation method comprises the following steps: (1) grinding steel slag, rinsing and naturally drying; (2) carrying out particle size screening, and modifying the obtained solid respectively with sulfuric acid, lanthanum chloride and cetyl trimethylammonium bromide (CTMAB); and (3) cleaning with deionized water, and drying to obtain the La-CTMAB-modified steel slag adsorbing material. After the ground surface sewage with the molybdate concentration of 5 mg/L is treated by the adsorbing material, the water body molybdate content reaches the Groundwater Quality Standard (GB/T14848-9) Class IV (<=0.5 mg/L). The method has the characteristics of low cost, high adsorption efficiency, wide applicability and the like, implements waste recycling, and brings in favorable social benefits and economic benefits.

Description

technical field [0001] The invention belongs to the field of adsorption materials for water body pollutants, and in particular relates to the preparation of a molybdate sewage treatment adsorption material, in particular to a composite adsorption material based on solid waste and a preparation method thereof. Background technique [0002] Molybdenum is one of the trace elements necessary for the survival of animals and plants, and it is also an important strategic resource in the development of the national economy. The chemical form of heavy metal molybdenum is variable, and it usually exists in two oxide forms in nature, one is tetravalent molybdenum, and the other is hexavalent molybdenum. In acidic environments, molybdates are easily concentrated and immobilized, while in alkaline and oxidizing environments, molybdates are re-released into the environment. Due to relatively backward molybdenum mining technology and insufficient management of alkaline molybdenum tailings...

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): B01J20/06B01J20/30C02F1/28C02F1/58C02F101/20
CPCB01J20/06C02F1/281C02F1/288C02F2101/20
Inventor 练建军陈波戴波王亚萍刘玲牛司平
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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