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Composite preparation for synchronously restoring PAH (polycyclic aromatic hydrocarbon) and heavy metal contaminated soil and preparation method of composite preparation

A technology of polycyclic aromatic hydrocarbons and compound preparations, applied in the field of environmental science, can solve problems affecting crop growth, agricultural product quality, and economic losses, and achieve rapid and efficient degradation, low cost, and simple preparation process

Active Publication Date: 2017-11-24
江苏金环科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soil pollution will cause crops to absorb and enrich certain pollutants, affecting crop growth and the quality of agricultural products, resulting in reduced production and direct huge economic losses to agricultural production

Method used

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  • Composite preparation for synchronously restoring PAH (polycyclic aromatic hydrocarbon) and heavy metal contaminated soil and preparation method of composite preparation
  • Composite preparation for synchronously restoring PAH (polycyclic aromatic hydrocarbon) and heavy metal contaminated soil and preparation method of composite preparation
  • Composite preparation for synchronously restoring PAH (polycyclic aromatic hydrocarbon) and heavy metal contaminated soil and preparation method of composite preparation

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of phosphorus-doped zinc oxide catalyst: zinc nitrate hexahydrate (2.97g, 0.01mol), aluminum nitrate nonahydrate (0.075g, 2.0×10 -4 mol), glycine (1.5 g, 0.02 mol), ammonium dihydrogen phosphate (added at an atomic ratio of zinc to phosphorus of 100:3) which was ground in an agate mortar and served as a phosphorus source before mixing. The final mixture was added to a mortar and thoroughly ground to obtain a transparent liquid, which was poured into a crucible and then placed in a drying oven to heat at 180°C. After the drying is complete, it is placed in a muffle furnace for calcination at 600°C for 2 hours. Finally, a phosphorus-doped zinc oxide catalyst is obtained.

[0024] The preparation method of iron-doped zinc oxide catalyst: take zinc nitrate hexahydrate (0.01mol), glycine (0.02mol) and ferric nitrate (according to zinc and iron atomic ratio is 100:5 to add) as iron source, its Add it into a mortar and grind thoroughly to obtain a tran...

Embodiment 1

[0027] The basic formula is:

[0028]

[0029] The phosphorus-doped zinc oxide catalyst, activated carbon, polyacrylamide, quicklime and sodium sulfide are weighed according to the above ratio, placed in a reaction kettle, and stirred sufficiently to obtain a composite preparation for synchronously treating polycyclic aromatic hydrocarbon pollution and heavy metal pollution.

Embodiment 2

[0031] The basic formula is:

[0032]

[0033]

[0034] The phosphorus-doped zinc oxide catalyst, activated carbon, polyacrylamide, quicklime and sodium sulfide are weighed according to the above ratio, placed in a reaction kettle, and stirred sufficiently to obtain a composite preparation for synchronously treating polycyclic aromatic hydrocarbon pollution and heavy metal pollution.

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Abstract

The invention relates to a composite preparation for synchronously restoring PAH (polycyclic aromatic hydrocarbon) and heavy metal contaminated soil. The composite preparation is prepared through steps as follows: a modified zinc oxide catalyst, activated carbon, polyacrylamide, quick lime and sulfide in a certain proportion are placed in a reaction kettle and fully stirred, and the composite preparation is obtained. The composite preparation can be widely applied to restoration of PAH and heavy metal contaminated soil, underground water remediation, relevantly polluted non-water treatment and other fields.

Description

technical field [0001] The invention belongs to the field of environmental science and technology, and in particular relates to a composite preparation for synchronously treating polycyclic aromatic hydrocarbon pollution and heavy metal pollution, its preparation method and application. Background technique [0002] Soil is the base for the growth of terrestrial plants, the material basis for human existence, and also the source and sink of pollutants. With the development of industry and agriculture, more and more toxic and harmful substances enter the soil, affecting the normal ecological function of the soil. Common pollutants in soil include inorganic pollutants and organic pollutants, among which inorganic pollutants are mainly heavy metals such as lead, cadmium, and mercury, and organic pollutants are polychlorinated biphenyls and polycyclic aromatic hydrocarbons, etc., which can exist in the environment for a long time and accumulate in the food chain, causing harm t...

Claims

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Application Information

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IPC IPC(8): C09K17/40A62D3/17C02F1/00C02F1/28C02F1/30C02F101/32C02F101/20
CPCA62D3/17C02F1/00C02F1/283C02F1/30C02F2101/20C02F2101/32C09K17/40
Inventor 顾万建尚鸣王玉萍蒋超吴晔方超
Owner 江苏金环科技有限公司
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