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Heavy metal ions absorbent prepared by straw stalks and preparation method thereof

A technology of straw, stalks and heavy metals, which is applied in the field of pollution treatment, can solve problems such as public nuisance, and achieve the effects of uniform voids, improved adsorption, and increased specific surface area.

Inactive Publication Date: 2017-09-15
韦卓林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, heavy metals discharged with wastewater, even if the concentration is small, can accumulate in algae and sediment, be absorbed by the surface of fish and shellfish, produce food chain concentration, and cause public nuisance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A heavy metal adsorbent prepared by using rice straw, mainly made of the following materials in parts by weight: 50 parts of rice straw, 15 parts of corn cob, 20 parts of modified bentonite, 15 parts of modified diatomite, 5 parts of green algae, and cyanobacteria 1 part, 0.5 part of Bacillus, 5 parts of fruit enzyme, 5 parts of soybean protein powder, 5 parts of tartaric acid, 5 parts of oligosaccharide, 5 parts of chitosan, 0.1 part of bacitracin zinc, 20 parts of silica gel, 20 parts of resin.

[0025] Wherein, the modified bentonite is made by the following method: add bentonite to 2 times the weight of deionized water, then add sodium bicarbonate to adjust the pH to 11, add 10% organic silicon oil, ball mill for 20 minutes, and place in a calciner The medium temperature was raised to 300°C, calcined for 1 hour, taken out and cooled to room temperature, then added ethanol with an equal volume concentration of 95% mass fraction, ball milled for 20 minutes, ignited and...

Embodiment 2

[0033] A heavy metal adsorbent prepared from rice straw, mainly made of the following materials in parts by weight: 100 parts of rice straw, 30 parts of corn cob, 30 parts of modified bentonite, 25 parts of modified diatomite, 10 parts of green algae, cyanobacteria 2 parts, 1 part of Bacillus, 10 parts of fruit enzyme, 10 parts of soybean protein powder, 10 parts of tartaric acid, 8 parts of oligosaccharides, 8 parts of chitosan, 0.5 parts of bacitracin zinc, 30 parts of silica gel, 30 parts of resin.

[0034] Wherein, the modified bentonite is made by the following method: add bentonite to 2 times the weight of deionized water, then add sodium bicarbonate to adjust the pH to 12, add 15% organic silicon oil, ball mill for 30 minutes, and place in a calciner The medium temperature was raised to 450°C, and after calcination for 4 hours, it was taken out and cooled to room temperature, then added with an equal volume concentration of 95% ethanol, ball milled for 30 minutes, ignite...

Embodiment 3

[0042] A heavy metal adsorbent prepared from rice straw, mainly made of the following materials in parts by weight: 85 parts of rice straw, 22 parts of corn cob, 25 parts of modified bentonite, 20 parts of modified diatomite, 8 parts of green algae, and cyanobacteria 1 part, 0.5 parts of Bacillus, 8 parts of fruit enzyme, 7 parts of soybean protein powder, 8 parts of tartaric acid, 6 parts of oligosaccharides, 7 parts of chitosan, 0.4 parts of bacitracin zinc, 22 parts of silica gel, 25 parts of resin.

[0043] Wherein, the modified bentonite is prepared by the following method: add bentonite to 2 times the weight of deionized water, then add sodium bicarbonate to adjust the pH to 11, add 12% organic silicon oil, ball mill for 20-30 minutes, place The temperature in the calciner is raised to 380°C, after calcining for 2 hours, take it out and cool it to room temperature, then add ethanol with an equal volume concentration of 95% mass fraction, ball mill for 22 minutes, ignite a...

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Abstract

The invention discloses a heavy metal ions absorbent prepared by straw stalks. The heavy metal ions absorbent prepared by straw stalks is mainly prepared from, by weight, 50-100 parts of straw stalks, 15-30 parts of corncob, 20-30 parts of modified bentonite, 15-25 parts of modified diatomite, 5-10 parts of green alga, 1-2 parts of blue-green algae, 0.5-1 part of bacillus, 5-10 parts of fruit enzymes, 5-10 parts of soybean protein powder, 5-10 parts of tartaric acid, and so on. By taking the straw stalks as the main raw material of absorbent and performing cellulose and alkali water treatment, the prepared straw stalk powder is synergistic with modified bentonite and modified diatomite, thus the absorbent has significant absorption to heavy metal ions; the straw stalk powder is chelated with soybean protein powder, tartaric acid, oligosaccharide and chitosan to form macromolecule, and the macromolecule is tightly absorbed by silica gel and resin; thus the effect of effectively removing heavy metal ion is reached.

Description

technical field [0001] The invention relates to the technical field of pollution treatment. More specifically, the present invention relates to a heavy metal adsorbent prepared from rice straw and a preparation method thereof. Background technique [0002] Heavy metals originally refer to metals with a specific gravity greater than 5 (metals with a density greater than 4.5 grams per cubic centimeter), including gold, silver, copper, iron, lead, etc. Heavy metal pollution is different from pollution from other organic compounds. Many organic compounds can reduce or eliminate their harmfulness through physical, chemical or biological purification of nature itself. Heavy metals are enriched and difficult to degrade in the environment. [0003] At present, due to the mining, smelting, and processing of heavy metals in China, many heavy metals such as lead, mercury, cadmium, and cobalt enter the atmosphere, water, and soil, causing serious environmental pollution. For example...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20
CPCB01J20/22B01J20/12B01J20/14B01J20/24B01J20/26C02F1/28C02F1/281C02F1/285C02F1/286C02F2101/20
Inventor 韦卓林
Owner 韦卓林
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