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Dechlorination method of chlorine-containing organic waste

A technology for organic waste and dechlorination, applied in the removal of solid waste and other directions, can solve the problems of complex preparation process and high cost, and achieve the effect of high-efficiency dechlorination

Inactive Publication Date: 2006-05-10
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

The nanomaterial is coated with a thin layer of transition metal oxide on the outer surface of the alkaline earth metal oxide [Decker et al., Environ Sci Technol, 2002, 36, 762], which has high dechlorination activity, but the disadvantage is the preparation The process is complicated and the cost is high

Method used

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  • Dechlorination method of chlorine-containing organic waste

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Embodiment 1

[0015] Co-precipitation method is used to prepare calcium-iron composite metal oxide ultrafine powder as a dechlorination agent, wherein the molar ratio of calcium to iron is 3.4:1. The powder crystal grain is 50nm. After the above dechlorination agent is activated and sieved, 40 mg and 2 mg of hexachlorobenzene (HCB) are taken and mixed thoroughly in a closed container, and reacted at 300° C. for 0.5 hours, the dechlorination efficiency can reach 97%.

Embodiment 2

[0017] Co-precipitation method is used to prepare calcium-iron composite metal oxide ultrafine powder as a dechlorination agent, wherein the molar ratio of calcium to iron is 1.1:1. The powder crystal grain is 40nm. After the above dechlorination agent is activated and sieved, 40 mg and 2 mg of hexachlorobenzene are mixed thoroughly in a closed container, and reacted at 300° C. for 0.5 hours, the dechlorination efficiency can reach 84%.

Embodiment 3

[0019] Co-precipitation method is used to prepare superfine magnesium-iron composite metal oxide powder as a dechlorination agent, wherein the molar ratio of magnesium to iron is 3.4:1. The powder crystal grain is 50nm. After the above dechlorination agent is activated and sieved, 40 mg and 2 mg of hexachlorobenzene (HCB) are taken and mixed thoroughly in a closed container, and reacted at 300° C. for 0.5 hours, the dechlorination efficiency can reach 97%.

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Abstract

The invention discloses a new antichloration method of chloro-carbon organic waste, which is characterized in using the composite metallic oxide superfine powder of alkaline-earth metals (calcium, magnesium, and barium) and iron as the active component of antichloration agent, wherein, the mol ration between alkaline-earth metals (calcium, magnesium, and barium) and iron is 6:1-1;1. Said method for preparing antichloration agent is co-precipitation method. The main steps of antichloration reaction comprises laying the chloro-carbon organic waste into sealed container with antichloration agent to be mixed and reacted at the temperature more than 200Deg. C to realize the antichloration of chloro-carbon organic waster.

Description

Technical field [0001] The invention relates to a method for dechlorination of chlorine-containing organic wastes, in particular, to a composite metal oxide ultrafine powder of alkaline earth metals (calcium, magnesium, barium) and iron as a dechlorination agent for chlorine-containing organic waste. Dechlorination of organic waste. Background technique [0002] Organochlorine compounds, as an important class of compounds, are widely used in various fields such as medicine, chemical industry, electronics, and pesticides. Among them, some organochlorine compounds have toxic effects on the environment and human health. Certain organochlorine compounds can destroy the ozone layer in the atmosphere; some can damage the human immune system, central nervous system, reproductive system, and even cause cancer. In recent years, extensive research has been conducted on the degradation technology of organochlorine compounds at home and abroad. Among them, oxidation and incineration [Lee and...

Claims

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Application Information

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IPC IPC(8): B09B3/00
Inventor 郑明辉马小东刘文彬张兵
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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