Heavy metal passivation composition and applications thereof

A technology of heavy metals and compositions, applied in applications, fertilizer mixtures, chemical instruments and methods, etc., can solve the problems of incomplete removal of heavy metals, long repair time, small target biomass, etc., and achieve important application value effects

Inactive Publication Date: 2017-01-04
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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Problems solved by technology

The treatment of soil heavy metal pollution mainly includes biological, physical and chemical methods. Microbial and phytoremediation technologies are low in cost and environmentally friendly, but due to their small target biomass and long repair time, they are not suitable for farmland soil; physical methods are easy to operate, but The cost is high, and it is only applicable in a small area; the chemical in-situ passivation method is low in cost and easy to operate. Although it cannot completely remove heavy metals in the soil, it is suitable for a wide range of farmland, and choosing a suitable passivation agent is chemical. method key

Method used

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  • Heavy metal passivation composition and applications thereof
  • Heavy metal passivation composition and applications thereof
  • Heavy metal passivation composition and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1, the influence of different heavy metal passivation materials on the Cd of pakchoi plant

[0040] The potted plant method was used in this experiment, and the experiment was carried out outside the greenhouse of the Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences.

[0041] The soil for testing is fluvo-aquic soil, the basic physical and chemical properties are moisture content 18.26%, pH 7.44, available phosphorus 8.64mg / kg, available potassium 95.01mg / kg, organic matter 0.728%, ammonium nitrogen 6.08mg / kg, nitrate nitrogen 46.29 mg / kg, total nitrogen 0.023%.

[0042] There were 5 treatments under the test, which were different Cd resistance materials, combined formula and control: zeolite, red mud, silicon potassium fertilizer, combined formula (zeolite + red mud + silicon potassium fertilizer) and CK; repeated 4 times.

[0043] Zeolite is zeolite powder passed through a 100-mesh sieve produced by Chengde H...

Embodiment 2

[0057] Embodiment 2, the impact of different heavy metal passivation materials on rice plant Cd

[0058] Materials and Methods

[0059] The potted plant method was used in this experiment, and the experiment was carried out outside the greenhouse of the Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences. The soil used for the test is paddy soil in Guiyang, Hunan Province polluted by cadmium. The basic physical and chemical properties are 3.63g / kg total nitrogen, 79.4g / kg organic matter, 226mg / kg alkaline nitrogen, 38.7mg / kg available phosphorus, and 126mg / kg available potassium. , pH6.13. The test setup, fertilization rate and resistance control material addition were the same as in Test 1, except that no cadmium was artificially added in this test (including the test of formula adjustment, see Table 2 for settings).

[0060] The test crop was rice (variety: Nipponbare), which was sown on April 9, 2014. The soil was filled on Ma...

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Abstract

The present invention discloses a heavy metal passivation composition and applications thereof. According to the heavy metal passivation composition, the active ingredients comprise zeolite, red mud and a silicon-potassium fertilizer, and the heavy metal passivation composition comprises, by mass, 20-30 parts of zeolite, specifically 25 parts, 20-30 parts of red mud, specifically 25 parts, and 5-15 parts of a silicon-potassium fertilizer, specifically 10 parts. The present invention provides the heavy metal passivation composition comprising the active ingredients such as zeolite, red mud and a silicon-potassium fertilizer. According to the present invention, the test results show that the steel slag can significantly reduce the Cd content in the plant; and the heavy metal passivation composition can be suitable for various crops and fruits and vegetables, is especially suitable for reducing the content of the heavy metal Cd in rice and Chinese cabbage, and has important application value.

Description

technical field [0001] The invention relates to a heavy metal passivation composition and application thereof. Background technique [0002] In recent years, my country's heavy metal pollution has become more and more serious, showing the transfer of industry to agriculture, urban areas to rural areas, surface to underground, upstream to downstream, and from water and soil pollution to food chain. Sexual, interlocking, and regional outbreak stages. Soil heavy metal pollution poses a serious threat to the ecological environment, food safety and human health. [0003] On April 18, 2014, the Ministry of Environmental Protection and the Ministry of Land and Resources issued a national survey report on soil pollution. The survey sites covered all cultivated land, some forest land, grassland, unused land and construction land. The results show that the overall state of the soil environment in the country is not optimistic, among which heavy metal pollution in cultivated land is p...

Claims

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Application Information

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IPC IPC(8): C09K17/08B09C1/08C09K101/00
Inventor 李钰飞孙钦平李吉进许俊香邹国元刘本生刘东生高利娟
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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