Adsorbent based on photosynthetic spore bacterium treatment of soil heavy metals, and preparation method thereof

A technology of photosynthetic spores and heavy metals, applied in the restoration of polluted soil, chemical instruments and methods, bacteria, etc., can solve the problems of hindering the normal growth and development of plants, the limited depth of root system expansion, and the disorder of cell metabolism, so as to promote super-rich Integrates plant growth, enriches microbial flora, and reduces metabolic disturbances

Inactive Publication Date: 2018-01-19
XINJIANG GUANGHEYUAN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to solve the problems of slow growth, small biomass, limited root expansion depth, metal selectivity and heavy metal transport tendency from roots to shoots in most hyperaccumulator plants at present, resulting in actual restoration eff

Method used

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  • Adsorbent based on photosynthetic spore bacterium treatment of soil heavy metals, and preparation method thereof
  • Adsorbent based on photosynthetic spore bacterium treatment of soil heavy metals, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Example 1: Weigh 300g of agricultural and forestry waste and add it to a pulverizer for crushing, pass through a 100-mesh sieve, put the sieved agricultural and forestry waste powder into a drying box, dry at 70°C to constant weight, and then transfer to a muffle furnace In an argon atmosphere, heat to 700°C, keep the temperature for carbonization for 20min, and cool to room temperature to obtain activated carbon from agricultural and forestry waste; weigh 80g of zeolite, 30g of vermiculite, and 100g of activated carbon from agricultural and forestry waste, put them into a ball mill, and 200r / min ball mill for 1h, pass through a 200 mesh sieve, then mix evenly with 30g mass fraction of 1% ferric chloride solution, adjust the pH to 9 with ammonia water, filter the filter residue, wash the filter residue 3 times with deionized water, transfer the filter residue to In a drying oven, dry at 105°C to constant weight, then transfer to a muffle furnace, heat to 600°C for calcin...

Embodiment 2

[0020]Example 2: Take 400g of agricultural and forestry waste and add it to a pulverizer for crushing, pass through a 100-mesh sieve, put the sieved agricultural and forestry waste powder into a drying box, dry at 108°C to constant weight, and then transfer to a muffle furnace In an argon atmosphere, heat to 850°C, keep the temperature for carbonization for 25min, and cool to room temperature to obtain activated carbon from agricultural and forestry waste; weigh 90g of zeolite, 40g of vermiculite, and 120g of activated carbon from agricultural and forestry waste, put them into a ball mill, and 220r / min ball mill for 1.5h, pass through a 200 mesh sieve, then mix evenly with 40g mass fraction of 1% ferric chloride solution, adjust the pH to 9 with ammonia water, filter the filter residue, wash the filter residue 4 times with deionized water, transfer the filter residue to into a drying oven, dried at 108°C to constant weight, then transferred to a muffle furnace, heated to 650°C ...

Embodiment 3

[0021] Example 3: Weigh 500g of agricultural and forestry waste and add it to a pulverizer for crushing, pass through a 100-mesh sieve, put the sieved agricultural and forestry waste powder into a drying box, dry at 110°C to constant weight, and then transfer to a muffle furnace In an argon atmosphere, heat to 900°C, keep the temperature for carbonization for 30 minutes, and cool to room temperature to obtain activated carbon from agricultural and forestry waste; weigh 100g zeolite, 50g vermiculite, and 150g activated carbon from agricultural and forestry waste, put them into a ball mill, and 300r / min ball mill for 2h, passed through a 200 mesh sieve, mixed evenly with 60g mass fraction of 1% ferric chloride solution, and adjusted the pH to 10 with ammonia water, filtered to obtain the filter residue, washed the filter residue with deionized water for 5 times, and transferred the filter residue to In a drying oven, dry at 110°C to constant weight, then transfer to a muffle furn...

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Abstract

The invention discloses an adsorbent based on photosynthetic spore bacterium treatment of soil heavy metals, and a preparation method thereof. The preparation method of the adsorbent comprises the following steps: preparing a composite powder, preparing a bacterium culture solution, preparing a photosynthetic bacterium culture solution, preparing a spore bacterium culture solution, and culturing photosynthetic bacteria. The photosynthetic bacteria and the spore bacteria promote the growth of hyperaccumulators, enrich microbial florae, promote the root expansion depth, improve the selectivity to heavy metals, inhibit the transshipment trend of the heavy metals from the root to the aboveground part, shorten the repairing time and accelerate the repairing efficiency. The heavy metal ion enrichment ability of the photosynthetic bacteria and the spore bacteria and the heavy metal ion adsorption and removal ability of zeolite, vermiculite and agriculture and forestry waste active carbon arecombined to make the heavy metal ions adsorbed into the adsorbent, solidify the soil heavy metal ions and transform the heavy metal ions into a low-toxicity form, so the soil heavy metal ions are effectively adsorbed, and the influence of plant cell metabolism disorder caused by the heavy metals on normal growth of the plants is reduced.

Description

technical field [0001] The invention relates to an adsorbent for treating soil heavy metals based on photosynthetic bacillus and a preparation method thereof, belonging to the technical field of environmentally friendly adsorbents. Background technique [0002] Soil is an important part of the ecological environment and one of the main resources for human survival. In recent years, with the large-scale discharge of industrial waste residues, the irrigation of farmland with wastewater, and the extensive application of pesticides and phosphate fertilizers, more and more pollutants, including heavy metals, have entered the soil. Inorganic pollutants are the main type of pollution, and the number of points exceeding the standard for inorganic pollutants accounts for 82.8% of the total number of points exceeding the standard. Inorganic heavy metal pollutants, such as: Cd, Hg, As, Cu, Pb, Cr, Zn, Ni, etc., the natural purification process of heavy metal elements in the environmen...

Claims

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Application Information

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IPC IPC(8): B01J20/20C12N1/20B09C1/10
Inventor 赵利华赵远吉晓华卫国华符菁
Owner XINJIANG GUANGHEYUAN BIOTECH CO LTD
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