CN107159167A - Heavy metal absorbent prepared by a kind of utilization rice straw and preparation method thereof - Google Patents
Heavy metal absorbent prepared by a kind of utilization rice straw and preparation method thereof Download PDFInfo
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- CN107159167A CN107159167A CN201710573329.0A CN201710573329A CN107159167A CN 107159167 A CN107159167 A CN 107159167A CN 201710573329 A CN201710573329 A CN 201710573329A CN 107159167 A CN107159167 A CN 107159167A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The invention discloses heavy metal absorbent prepared by a kind of utilization rice straw, heavy metal absorbent prepared by the utilization rice straw is mainly made up of following parts by weight material：50 100 parts of rice straw, 15 30 parts of corncob, 20 30 parts of modified alta-mud, 15 25 parts of modification infusorial earth, 5 10 parts of green alga, 12 parts of blue-green algae, 0.5 1 parts of bacillus, 5 10 parts of fruit ferment, 5 10 parts of soyabean protein powder, 5 10 parts of tartaric acid etc.；The present invention is using primary raw material of the rice straw as adsorbent, handled by cellulase and buck, the rice straw powder being made has significant suction-operated with modified alta-mud, modification infusorial earth synergy heavy metal ion, chelating is carried out with soyabean protein powder, tartaric acid, oligosaccharide, chitosan form macromolecular again, tightly adsorbed by silica gel and resin, reach the effect of effective heavy-metal ion removal.
Description
Technical field
The present invention relates to pollution processing technology field.It is more particularly related to which a kind of prepared using rice straw
Heavy metal absorbent and preparation method thereof.
Background technology
Heavy metal original meaning refers to the metal (density be more than 4.5 grams metals per cubic centimeter) that proportion is more than 5, including gold,
Silver, copper, iron, lead etc..Heavy metal pollution is different from the pollution of other organic compounds.Many organic compounds can pass through nature
Boundary physics itself, chemistry or biological purification, makes harmfulness reduce or release.And heavy metal has enriching, it is difficult to
Degraded in environment.
At present China due in the exploitation, smelting, process of heavy metal, cause many heavy metals for example lead, mercury, cadmium,
Cobalt etc. enters big gas and water, soil and causes serious environmental pollution.The heavy metal such as discharged with waste water, also can be even if concentration is small
Accumulate, adsorbed by fish and shellfish body surface in algae and bed mud, food chain concentration is produced, so as to cause public hazards.
In human body with protein and various enzymes strong interaction can occur for heavy metal, them is lost activity,
It may be enriched with some organs of human body, if it exceeds the limit that human body is resistant to, can cause human body acute poisoning, Asia anxious
Property poisoning, slow poisoning etc., people is known from experience and causes very big harm, for example, minamata disease (mercury pollution) and ostalgia that Japan occurs
Nuisance diseases such as sick (cadmium pollutions), is all as caused by heavy metal pollution.
The content of the invention
Significantly prepared present invention aim to address above mentioned problem there is provided a kind of cost ineffective fruit using rice straw
Heavy metal absorbent, the present invention is handled, system using primary raw material of the rice straw as adsorbent by cellulase and buck
Into rice straw powder and modified alta-mud, modification infusorial earth synergy heavy metal ion there is significant suction-operated,
Chelating is carried out with soyabean protein powder, tartaric acid, oligosaccharide, chitosan again and form macromolecular, tightly adsorbed, reach by silica gel and resin
To the effect of effective heavy-metal ion removal, the present invention can significantly remove the heavy metal ion in sewage, for removing in sewage
Heavy metal ion there is remarkable result；
The present invention also provides a kind of preparation method of heavy metal absorbent prepared by utilization rice straw, wherein rice straw
Handle, macromolecular is digested into small molecule, specific surface area increase, significantly improve pair by buck again after cellulase degradation
Heavy metal ion adsorbed ability, silica gel and resin form energy of adsorption of the little particle silica column for macromolecular by high-pressure fog
Power is significantly improved.
The technical scheme that the present invention is provided is：
Heavy metal absorbent prepared by a kind of utilization rice straw, heavy metal absorbent prepared by the utilization rice straw
Mainly it is made up of following parts by weight material：50-100 parts of rice straw, 15-30 parts of corncob, 20-30 parts of modified alta-mud, change
15-25 parts of diatomite of property, 5-10 parts of green alga, 1-2 parts of blue-green algae, 0.5-1 parts of bacillus, 5-10 parts of fruit ferment, soybean protein
5-10 parts of powder, 5-10 parts of tartaric acid, 5-8 parts of oligosaccharide, 5-8 parts of chitosan, 0.1-0.5 parts of Bacitracin Zinc, 20-30 parts of silica gel,
20-30 parts of resin.
Preferably, the heavy metal absorbent that prepared by the utilization rice straw is mainly made up of following parts by weight material：
85 parts of rice straw, 22 parts of corncob, 25 parts of modified alta-mud, 20 parts of modification infusorial earth, 8 parts of green alga, 1 part of blue-green algae, gemma bar
0.5 part of bacterium, 8 parts of fruit ferment, 7 parts of soyabean protein powder, 8 parts of tartaric acid, 6 parts of oligosaccharide, 7 parts of chitosan, Bacitracin Zinc 0.4
Part, 22 parts of silica gel, 25 parts of resin.
Preferably, the modified alta-mud is made up of following methods：Bentonite is added into 2 times of heavy deionized waters, then
Add after sodium acid carbonate regulation PH to 11-12, add 10-15% organic silicone oils, ball milling is placed in calcining furnace after 20-30 minutes
Temperature is increased to 300-450 DEG C, after calcining 1-4 hours, and taking-up is cooled to room temperature, adds isometric concentration for mass fraction
95% ethanol, ball milling ignition in 20-30 minutes to ethanol is burnt out, and re-dry obtains the modified alta-mud.
Preferably, the modification infusorial earth is made up of following methods：Diatomite is added into 2 times of heavy deionized waters, plus
Enter citric acid regulation PH to 3-5, ball milling stands 20-30 minutes after 20-30 minutes, add sodium acid carbonate regulation PH to 11-12
Afterwards, after ball milling 20-30 minutes, it is placed in temperature in calcining furnace and is increased to 300-450 DEG C, after calcining 1-4 hours, taking-up is cooled to room
Temperature obtains the modification infusorial earth.
The present invention also provides a kind of preparation method of heavy metal absorbent prepared by described utilization rice straw, the system
Preparation Method comprises the following steps：
Step 1: after rice straw and corncob are dried, crushing 100 mesh sieve, and obtaining powder, powder was added
After the water of weight, 1-2% weight cellulases are added, the buck that PH is 11-12 is added after standing 1-2 hours, after filtering, 2- is soaked
After 4 hours, it is neutrality that centrifugal filtration, which is rinsed to PH, and treated powders A is obtained after drying；
Step 2: will be heated to after silica gel and mixed with resin after molten condition, stir 30 minutes, it is rear using nitrogen through too high
Cooling immediately obtains silica column particle after pressure shower nozzle spraying is scattered, and the pressure of its mesohigh is 100-200Mpa；
Step 3: the weight such as addition after green alga, blue-green algae, bacillus, fruit ferment, soyabean protein powder, tartaric acid are mixed
After the deionized water mixing of amount, liquid B is obtained within 1-2 days；
Step 4: treated powders A, silica column particle, modified alta-mud, modification infusorial earth are mixed with liquid B
Afterwards, after being uniformly mixed, carbon dioxide 20mg/L is passed through, the heavy metal absorbent is obtained.
The present invention at least includes following beneficial effect：
The present invention is handled by cellulase and buck, is made using primary raw material of the rice straw as adsorbent
Rice straw powder and modified alta-mud, modification infusorial earth synergy heavy metal ion have a significant suction-operated, then with
Soyabean protein powder, tartaric acid, oligosaccharide, chitosan carry out chelating and form macromolecular, are tightly adsorbed by silica gel and resin, reaching has
The effect of heavy-metal ion removal is imitated, the modified alta-mud that the present invention is added is added after organosilicon by using ethanol after calcining
Burning, significantly improves bentonitic porosity so that space is uniform, significantly increasing for bentonitic specific surface area, improves a huge sum of money
Belong to ionic adsorption, the present invention also added green alga, blue-green algae, bacillus, fruit ferment, and wherein blue-green algae belongs to photosynthetic bacteria tool
There is the function of significantly purifying water, pass through biological adsorption with green alga, bacillus, fruit ferment synergy so that the present invention
With the notable heavy metal ion ability removed in sewage, there is remarkable result for removing the heavy metal ion in sewage, this
The Bacitracin Zinc class antibiotic of addition is invented, there is bactericidal action to gram positive bacteria, the effect to water quality with purification；
The present invention also provides a kind of preparation method of heavy metal absorbent prepared by utilization rice straw, wherein rice straw
Handle, macromolecular is digested into small molecule, specific surface area increase, significantly improve pair by buck again after cellulase degradation
Heavy metal ion adsorbed ability, silica gel and resin form energy of adsorption of the little particle silica column for macromolecular by high-pressure fog
Power is significantly improved.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Embodiment
With reference to example below, the present invention is described in further detail, to make those skilled in the art with reference to specification
Word can be implemented according to this.
Wherein 1 part of the embodiment of the present invention is 1kg
Embodiment 1
Heavy metal absorbent prepared by a kind of utilization rice straw, is mainly made up of following parts by weight material：Rice straw
50 parts, 15 parts of corncob, 20 parts of modified alta-mud, 15 parts of modification infusorial earth, 5 parts of green alga, 1 part of blue-green algae, 0.5 part of bacillus,
5 parts of fruit ferment, 5 parts of soyabean protein powder, 5 parts of tartaric acid, 5 parts of oligosaccharide, 5 parts of chitosan, 0.1 part of Bacitracin Zinc, silica gel 20
Part, 20 parts of resin.
Wherein, the modified alta-mud is made up of following methods：Bentonite is added into 2 times of heavy deionized waters, added
After sodium acid carbonate regulation PH to 11,10% organic silicone oil is added, ball milling is placed in temperature in calcining furnace and is increased to 300 after 20 minutes
DEG C, after calcining 1 hour, taking-up is cooled to room temperature, adds isometric concentration for the ethanol of mass fraction 95%, 20 minutes points of ball milling
Fire burning to ethanol is burnt out, and re-dry obtains the modified alta-mud.
The modification infusorial earth is made up of following methods：Diatomite is added into 2 times of heavy deionized waters, citric acid is added and adjusts
PH to 3 is saved, ball milling stands 20 minutes after 20 minutes, added after sodium acid carbonate regulation PH to 11, ball milling is placed in after 20 minutes
Temperature is increased to 300 DEG C in calcining furnace, after calcining 1 hour, and taking-up is cooled to room temperature and obtains the modification infusorial earth.
The preparation method of heavy metal absorbent prepared by described utilization rice straw, comprises the following steps：
Step 1: after rice straw and corncob are dried, crushing 100 mesh sieve, and obtaining powder, powder was added
After the water of weight, 1% heavy cellulase is added, the buck that PH is 11 is added after standing 1 hour, after filtering, after soaking 2 hours,
It is neutrality that centrifugal filtration, which is rinsed to PH, and treated powders A is obtained after drying；
Step 2: will be heated to after silica gel and mixed with resin after molten condition, stir 30 minutes, it is rear using nitrogen through too high
Cooling immediately obtains silica column particle after pressure shower nozzle spraying is scattered, and the pressure of its mesohigh is 100Mpa；
Step 3: the weight such as addition after green alga, blue-green algae, bacillus, fruit ferment, soyabean protein powder, tartaric acid are mixed
After the deionized water mixing of amount, liquid B is obtained within 1 day；
Step 4: treated powders A, silica column particle, modified alta-mud, modification infusorial earth are mixed with liquid B
Afterwards, after being uniformly mixed, carbon dioxide 20mg/L is passed through, the heavy metal absorbent is obtained.
Embodiment 2
Heavy metal absorbent prepared by a kind of utilization rice straw, is mainly made up of following parts by weight material：Rice straw
100 parts, 30 parts of corncob, 30 parts of modified alta-mud, 25 parts of modification infusorial earth, 10 parts of green alga, 2 parts of blue-green algae, 1 part of bacillus,
10 parts of fruit ferment, 10 parts of soyabean protein powder, 10 parts of tartaric acid, 8 parts of oligosaccharide, 8 parts of chitosan, 0.5 part of Bacitracin Zinc, silica gel
30 parts, 30 parts of resin.
Wherein, the modified alta-mud is made up of following methods：Bentonite is added into 2 times of heavy deionized waters, added
After sodium acid carbonate regulation PH to 12,15% organic silicone oil is added, ball milling is placed in temperature in calcining furnace and is increased to 450 after 30 minutes
DEG C, after calcining 4 hours, taking-up is cooled to room temperature, adds isometric concentration for the ethanol of mass fraction 95%, 30 minutes points of ball milling
Fire burning to ethanol is burnt out, and re-dry obtains the modified alta-mud.
The modification infusorial earth is made up of following methods：Diatomite is added into 2 times of heavy deionized waters, citric acid is added and adjusts
PH to 5 is saved, ball milling stands 30 minutes after 30 minutes, added after sodium acid carbonate regulation PH to 12, ball milling is placed in after 30 minutes
Temperature is increased to 450 DEG C in calcining furnace, after calcining 4 hours, and taking-up is cooled to room temperature and obtains the modification infusorial earth.
The preparation method of heavy metal absorbent prepared by described utilization rice straw, comprises the following steps：
Step 1: after rice straw and corncob are dried, crushing 100 mesh sieve, and obtaining powder, powder was added
After the water of weight, 2% heavy cellulase is added, the buck that PH is 12 is added after standing 2 hours, after filtering, after soaking 4 hours,
It is neutrality that centrifugal filtration, which is rinsed to PH, and treated powders A is obtained after drying；
Step 2: will be heated to after silica gel and mixed with resin after molten condition, stir 30 minutes, it is rear using nitrogen through too high
Cooling immediately obtains silica column particle after pressure shower nozzle spraying is scattered, and the pressure of its mesohigh is 200Mpa；
Step 3: the weight such as addition after green alga, blue-green algae, bacillus, fruit ferment, soyabean protein powder, tartaric acid are mixed
After the deionized water mixing of amount, liquid B is obtained within 2 days；
Step 4: treated powders A, silica column particle, modified alta-mud, modification infusorial earth are mixed with liquid B
Afterwards, after being uniformly mixed, carbon dioxide 20mg/L is passed through, the heavy metal absorbent is obtained.
Embodiment 3
Heavy metal absorbent prepared by a kind of utilization rice straw, is mainly made up of following parts by weight material：Rice straw
85 parts, 22 parts of corncob, 25 parts of modified alta-mud, 20 parts of modification infusorial earth, 8 parts of green alga, 1 part of blue-green algae, 0.5 part of bacillus,
8 parts of fruit ferment, 7 parts of soyabean protein powder, 8 parts of tartaric acid, 6 parts of oligosaccharide, 7 parts of chitosan, 0.4 part of Bacitracin Zinc, silica gel 22
Part, 25 parts of resin.
Wherein, the modified alta-mud is made up of following methods：Bentonite is added into 2 times of heavy deionized waters, added
After sodium acid carbonate regulation PH to 11,12% organic silicone oil is added, ball milling is placed in temperature in calcining furnace and be increased to after 20-30 minutes
380 DEG C, after calcining 2 hours, taking-up is cooled to room temperature, adds isometric concentration for the ethanol of mass fraction 95%, 22 points of ball milling
Clock ignition to ethanol is burnt out, and re-dry obtains the modified alta-mud.
The modification infusorial earth is made up of following methods：Diatomite is added into 2 times of heavy deionized waters, citric acid is added and adjusts
PH to 4.5 is saved, ball milling stands 24 minutes after 28 minutes, added after sodium acid carbonate regulation PH to 11, ball milling is put after 26 minutes
Temperature is increased to 350 DEG C in calcining furnace, after calcining 3 hours, and taking-up is cooled to room temperature and obtains the modification infusorial earth.
The preparation method of heavy metal absorbent prepared by described utilization rice straw, comprises the following steps：
Step 1: after rice straw and corncob are dried, crushing 100 mesh sieve, and obtaining powder, powder was added
After the water of weight, 1.5% heavy cellulase is added, the buck that PH is 11.5, immersion 3.5 are added after standing 1.5 hours, after filtering
After hour, it is neutrality that centrifugal filtration, which is rinsed to PH, and treated powders A is obtained after drying；
Step 2: will be heated to after silica gel and mixed with resin after molten condition, stir 30 minutes, it is rear using nitrogen through too high
Cooling immediately obtains silica column particle after pressure shower nozzle spraying is scattered, and the pressure of its mesohigh is 150Mpa；
Step 3: the weight such as addition after green alga, blue-green algae, bacillus, fruit ferment, soyabean protein powder, tartaric acid are mixed
After the deionized water mixing of amount, liquid B is obtained within 1 day；
Step 4: treated powders A, silica column particle, modified alta-mud, modification infusorial earth are mixed with liquid B
Afterwards, after being uniformly mixed, carbon dioxide 20mg/L is passed through, the heavy metal absorbent is obtained.
Experiment：Using embodiment 1-3 heavy metal absorbent, to the sewage sampling 6000L of certain sewage treatment plant, sewage contains
Cadmium ion 30.5mg/L, lead ion 28.9mg/L, 3 groups of A, B, C are divided into by 6000L sewage sample, correspond to add respectively
Heavy metal absorbent, the dirt of test processes is recovered by filtration after 3 hours in embodiment 1-3 heavy metal absorbent 150g, stir process
Water, cadmium ion ND, lead ion ND, the heavy metal absorbent of recovery can be reused.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the embodiment with description.
Claims (5)
1. a kind of heavy metal absorbent prepared by utilization rice straw, it is characterised in that weight prepared by the utilization rice straw
Metal absorbent is mainly made up of following parts by weight material：50-100 parts of rice straw, 15-30 parts of corncob, modified alta-mud
20-30 parts, 15-25 parts of modification infusorial earth, 5-10 parts of green alga, 1-2 parts of blue-green algae, 0.5-1 parts of bacillus, fruit ferment 5-10
Part, 5-10 parts of soyabean protein powder, 5-10 parts of tartaric acid, 5-8 parts of oligosaccharide, 5-8 parts of chitosan, 0.1-0.5 parts of Bacitracin Zinc, silicon
20-30 parts of glue, 20-30 parts of resin.
2. heavy metal absorbent prepared by utilization rice straw according to claim 1, it is characterised in that the utilization rice
Heavy metal absorbent prepared by careless stalk is mainly made up of following parts by weight material：85 parts of rice straw, 22 parts of corncob, modification
25 parts of bentonite, 20 parts of modification infusorial earth, 8 parts of green alga, 1 part of blue-green algae, 0.5 part of bacillus, 8 parts of fruit ferment, soybean protein
7 parts of powder, 8 parts of tartaric acid, 6 parts of oligosaccharide, 7 parts of chitosan, 0.4 part of Bacitracin Zinc, 22 parts of silica gel, 25 parts of resin.
3. heavy metal absorbent prepared by utilization rice straw according to claim 2, it is characterised in that the modification is swollen
Profit soil is made up of following methods：Bentonite is added into 2 times of heavy deionized waters, added after sodium acid carbonate regulation PH to 11-12,
10-15% organic silicone oils are added, ball milling is placed in temperature in calcining furnace and is increased to 300-450 DEG C, calcining 1-4 is small after 20-30 minutes
Shi Hou, taking-up is cooled to room temperature, adds isometric concentration for the ethanol of mass fraction 95%, ball milling ignition in 20-30 minutes
Burnt out to ethanol, re-dry obtains the modified alta-mud.
4. heavy metal absorbent prepared by utilization rice straw according to claim 3, it is characterised in that the modified silicon
Diatomaceous earth is made up of following methods：Diatomite is added into 2 times of heavy deionized waters, citric acid regulation PH to 3-5, ball milling 20- is added
After 30 minutes, 20-30 minutes are stood, is added after sodium acid carbonate regulation PH to 11-12, ball milling is placed in calcining after 20-30 minutes
Temperature is increased to 300-450 DEG C in stove, after calcining 1-4 hours, and taking-up is cooled to room temperature and obtains the modification infusorial earth.
5. the preparation side of heavy metal absorbent prepared by any described utilization rice straw in a kind of 1-4 according to claim
Method, it is characterised in that the preparation method comprises the following steps：
Step 1: after rice straw and corncob are dried, crushed 100 mesh sieve, and obtained powder, powder such as is added at the weight
Water after, add 1-2% weight cellulase, stand 1-2 hour after, after filtering add PH be 11-12 buck, soak 2-4 it is small
Shi Hou, it is neutrality that centrifugal filtration, which is rinsed to PH, and treated powders A is obtained after drying；
Step 2: will be heated to after silica gel and mixed with resin after molten condition, stir 30 minutes, it is rear that high pressure spray is passed through using nitrogen
Cooling immediately obtains silica column particle after head spraying is scattered, and the pressure of its mesohigh is 100-200Mpa；
Step 3: the weight such as addition after green alga, blue-green algae, bacillus, fruit ferment, soyabean protein powder, tartaric acid are mixed
After deionized water mixing, liquid B is obtained within 1-2 days；
Step 4: after treated powders A, silica column particle, modified alta-mud, modification infusorial earth are mixed with liquid B, stirring
Mix after being well mixed, be passed through carbon dioxide 20mg/L, obtain the heavy metal absorbent.
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| CN109464992A (en) * | 2019-01-15 | 2019-03-15 | 临沂大学 | A kind of adsorbent composition adsorbing heavy metal in waste water cadmium |
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| CN110842016A (en) * | 2019-11-21 | 2020-02-28 | 佛山科学技术学院 | Rapid remediation method for heavy metal polluted farmland |
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| CN114195598A (en) * | 2021-12-29 | 2022-03-18 | 河北省农林科学院农业资源环境研究所 | Microalgae fertilizer for improving soil fertility and preparation method and application thereof |
| CN115490506A (en) * | 2022-10-22 | 2022-12-20 | 佛山市三水宏源陶瓷企业有限公司 | Rock plate with formaldehyde degradation function and preparation method thereof |
| CN115869919A (en) * | 2022-11-30 | 2023-03-31 | 南昌大学 | Method for improving carboxymethylation efficiency of cellulose and promoting insertion of cellulose into clay mineral layer, product and application of product |
| CN116984365A (en) * | 2023-08-23 | 2023-11-03 | 广东省农业科学院农业质量标准与监测技术研究所 | Method for reducing cadmium activity in soil by returning straw to field |
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