Modified steel scoria adsorbent and preparation thereof

An adsorbent, steel slag technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as poor organic wastewater effect

Inactive Publication Date: 2008-09-17
CHENGDU UNIV OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. The currently developed steel slag adsorption materials are basically used to treat heavy metal ion wastewater, and the effect of direct adsorption on organic waste water is very poor. How to improve the adsorption performance of steel slag on organic matter through modification?

Method used

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  • Modified steel scoria adsorbent and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Referring to the attached "flow chart of preparation of harmless steel slag adsorbent", the open hearth steel slag is crushed by jaw crusher, and steel slag of various particle sizes is obtained by dry or wet screening and classification. Add the obtained steel slags of different particle sizes into hydrochloric acid with a concentration of 1mol / L, shake for 2 hours, filter, and rinse repeatedly with distilled water until the filtrate is neutral.

[0016] Then, take 10g of the prepared steel slag and add it into cetyltrimethylammonium bromide (CTMAB) with a modifier concentration of 2%, vibrate at 50°C for 2 hours, filter, rinse with distilled water until the filtrate is medium The modified steel slag is then dried at 100°C.

[0017] Finally, the prepared modified steel slag was irradiated with 800W microwave for 5 minutes to obtain activated modified steel slag.

Embodiment 2

[0019] Referring to the attached "Flowchart for Preparation of Harmless Steel Slag Adsorbent", the converter steel slag is crushed by a roller crusher, and steel slag of various particle sizes is obtained by dry or wet screening and classification. Add the obtained steel slags with different particle sizes into sulfuric acid with a concentration of 0.5 mol / L, vibrate for 2 hours, filter, and rinse repeatedly with distilled water until the filtrate is neutral.

[0020] Then, take 10g of the prepared steel slag and add it into dodecyltrimethylammonium bromide (DTMA) with a modifier concentration of 4%, vibrate at 50°C for 2 hours, filter, rinse with distilled water until the filtrate is medium The modified steel slag is then dried at 100°C.

[0021] Finally, the prepared modified steel slag was irradiated with 800W microwave for 5 minutes to obtain activated modified steel slag.

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Abstract

The invention discloses a preparation method for steel slag adsorbent without secondary pollution and a synthetic method of modified steel slag used for adsorbing organic pollutants. The steel slag has extensive sources. The method has the advantages of ability to obtain adsorption material of low price, convenient application, and no secondary pollution, and also ability to use waste to control waste, to make the waste into a resource, and to improve the adsorption and removing capacity of steel slag for organic pollutant.

Description

technical field [0001] The invention relates to a preparation method for turning solid waste into an adsorption material, in particular to a preparation method for obtaining a steel slag adsorbent that does not generate secondary pollution and a synthesis method for adsorbing organic pollutants and modifying steel slag. technical background [0002] Steel slag is a by-product of steelmaking production. The production rate of steel slag is about 15-20% of the crude steel. In 2006, my country's steel output has exceeded 400 million tons, and the annual production of steel slag is nearly 80 million tons. Steel slag has been discarded as waste for a long time, which not only occupies a large amount of land but also pollutes groundwater. In recent years, through the comprehensive utilization of steel slag, more and more countries have realized that steel slag is no longer a waste, but a valuable resource. [0003] At present, the most popular research on the new ways of using st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30
Inventor 刘盛余羊依金叶芝祥高瑾
Owner CHENGDU UNIV OF INFORMATION TECH
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