CN109877143A - A kind of straw waste recycling and reusing processing method and adsorbent - Google Patents
A kind of straw waste recycling and reusing processing method and adsorbent Download PDFInfo
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- CN109877143A CN109877143A CN201910283292.7A CN201910283292A CN109877143A CN 109877143 A CN109877143 A CN 109877143A CN 201910283292 A CN201910283292 A CN 201910283292A CN 109877143 A CN109877143 A CN 109877143A
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Abstract
The invention discloses a kind of straw waste recycling and reusing processing method, include the following steps: to prepare corn stover, and clean corn stover；Corn stover after cleaning is dried；Corn stover after drying is crushed, stalk particle is obtained；Liquor zinci chloridi is configured, liquor zinci chloridi is added in stalk particle and is stirred evenly, stalk-liquor zinci chloridi is obtained；Stalk-liquor zinci chloridi is carried out to display processing, obtains displaying processing product；Vacuum heat treatment is carried out to processing product is displayed, obtains granular disintegration；Granular disintegration is ground into fine powder, fine powder is post-processed；Iron chloride and ferric sulfate are put into the flask equipped with distilled water and sufficiently dissolved, ammonia spirit is added, ferroferric oxide gel precipitating is made；Fine powder after post-processing is added in ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixed liquor；Filtering magnetic mixed liquor.Processing soil treatment agent of the invention is highly-safe, significantly improves adsorption capacity and efficiency.
Description
Technical field
The present invention relates to agricultural technology fields, especially with regard to a kind of straw waste recycling and reusing processing method and suction
Attached dose.
Background technique
Cadmium is human body non-essential element, and in nature often with the presence of compound state, general content is very low, normal environment
Under state, human health will not influence.Cadmium and zinc are congeners, in nature cadmium often with zinc, lead symbiosis.When environment by
After cadmium pollution, cadmium can be enriched in vivo, entered human body by food chain and caused slow poisoning.Per kilogram soil cadmium content is
0.01-2 milligrams, average value per kilogram is 0.35 milligram.It is very high to contain cadmium concentration near aluminium metallurgy factory and its in lower wind direction Soils In The Region,
Soil is caused to fall into disuse.The accumulation of waste residue containing cadmium, makes the compound of cadmium enter soil and water body.The application of phosphate fertilizer is wide and amount is big,
So in the long run, the cadmium in soil, crop and food from phosphate fertilizer and certain pesticides may be more than dirty from other
The cadmium in dye source.
Chinese patent CN105967339B discloses a kind of method of the ecological pond purified treatment of heavy metal pollution irrigation water
And device, step are: 1, place selects；2, three-level ecological pond is constructed；To original pond or low-lying land or black fallow carry out dilatation,
Intensification, antiseepage, partition processing；3, adsorption cleaning pond is constructed；In the end of second level ecological pond, cement pit is set；4, adsorption material is launched
Material；In the material of the bottom filling absorption heavy metal in adsorption cleaning pond；5, level-one ecological pond: planting aquatic plants；6, second level is raw
The state pool；Planting aquatic plants；7, three-level ecological pond；Planting aquatic plants carry out three-level purification to irrigation water.The device it by giving birth to
The state pool, adsorption cleaning pond, barricade, ecological slope protection, anti-seepage geotextile, soil horizon, water inlet pipe, inflow control valve, aquatic plant
Object, adsorbent material, outlet pipe composition.
Chinese patent CN105923777B discloses a kind of plant restoration method of underground water pollution, comprising: with pollution sources
Centered on investigate periphery underground water pollution environment, simulating pollution plumage features of shape determines points of contamination, carries out well spacing；It is put into well
Limit plastic film is set, and adds cultivation matrix into film, by rehabilitation plant plantation in cultivation matrix；The limit plastic film is both ends open
Hollow columnar structures, top is concordant with ground, bottom deeply to underground and level of ground water intersection, can circumferentially wrap
The root system for repairing plant is enclosed, its cross growth is limited；Rehabilitation plant is cultivated, until soil is up to standard.
Chinese patent CN105967339B discloses a kind of heavy-metal contaminated soil renovation agent, is made of the following components: silicon
5-10 kilograms of sour potassium, 20-40 kilograms of smectite powder, 10-50 kilograms of turf powder, 20-40 kilograms of compost, sodium sulfite 1.5-
5 kilograms, 0.5-5 kilograms of sodium sulphate, 0.5-1 kilograms of polyacrylamide, 1-3 kilograms of poly-aspartate, diethyl-dithio amino
1-5 kilograms of sodium formate, 3-6 kilograms of bacteria agent, 0.5-3 kilograms of Sulfobutyl ether β _ cyclodextrin, 0.5-2 kilograms of complex enzyme formulation, wood
1-5 kilograms of quality sodium sulfonate, 0.5-1 kilograms of sodium citrate, 0.5-1 kilograms of sodium tartrate.
For soil cadmium pollution problem, the prior art proposes a series of solutions, such as the dispensing of large-scale use
Caustic soda or lime method, this method are mainly used " alkalescent chemical precipitation emergency is except cadmium drying technique ", are exactly thrown in sewage
Put caustic soda or lime and aluminium polychloride.It launches caustic soda or lime improves the pH value in contaminated river, make water in weak base
Property, cadmium ion will be precipitated at this time with cadmium carbonate, cadmium hydroxide fine particle；And aluminium polychloride can then mix these fine particles
It coagulates and forms bulky grain precipitating not soluble in water together while isolating Free water.Bulky grain after flocculation precipitates to form sludge
It is transported on the strainer of concentration gravity dehydration of belt filter press, Free water is separated under gravity, and formation is not flowed
The sludge of dynamic state.Although this method can remove cadmium, the problem of then the problem of bringing is exactly saline Land, make
Solve the problems, such as that cadmium pollution will lead to the discarded of soil entirety in this way.In addition there are in some foregoing patented technologies
The processing soil treatment agent of proposition, although these processing soil treatment agents can solve the problems, such as cadmium pollution to a certain extent, these
Inorganic agent itself also includes some toxic metal ions (although these Metals are lower than cadmium ion), and at some biologies
Although managing agent does not include noxious material, often treatment effect is poor for biological treatment agent.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of straw waste recycling and reusing processing method, adsorbent and adsorbents in agriculture
Application in industry land soil, the shortcomings that prior art can be overcome.
To achieve the above object, the present invention provides a kind of straw waste recycling and reusing processing method, the straw wastes
Recycling and reusing processing method includes the following steps: to prepare corn stover, and cleans to corn stover；By the jade after cleaning
Rice stalk is dried；Corn stover after drying is crushed, stalk particle is obtained；Liquor zinci chloridi is configured, by stalk
Particle is added liquor zinci chloridi and stirs evenly, and obtains stalk-liquor zinci chloridi；Stalk-liquor zinci chloridi is carried out to display place
Reason, obtains displaying processing product；Vacuum heat treatment is carried out to processing product is displayed, obtains granular disintegration；By granular disintegration
It is ground into fine powder, and fine powder is post-processed；Iron chloride and ferric sulfate are put into the flask equipped with distilled water and sufficiently dissolved,
Ammonia spirit is added, ferroferric oxide gel precipitating is made；Ferroferric oxide gel precipitating is added in fine powder after post-processing
In, it stirs and stands to obtain magnetic mixed liquor；Filtering magnetic mixed liquor, obtains filtration product；And filtration product is carried out
Drying, obtains straw waste recycling and reusing product.
In a preferred embodiment, the corn stover after cleaning is carried out drying to specifically include: by the jade after cleaning
Rice stalk is put into baking oven, and drying temperature is 70-90 DEG C, and drying knows that the corn stover after cleaning keeps constant weight amount.
In a preferred embodiment, liquor zinci chloridi concentration is 3-6mol/L, and stalk contains in stalk-liquor zinci chloridi
Amount is 70-120g stalk/L liquor zinci chloridi, and liquor zinci chloridi and stirring evenly is added in stalk particle and is specifically included: stirring is adopted
With mechanical stirring, machine mixer revolving speed is 200-300r/min, and whipping temp is 40-60 DEG C, mixing time 20-40min.
In a preferred embodiment, carry out displaying processing to stalk-liquor zinci chloridi and specifically include: assembly time is
20-40h, displaying temperature is 100-130 DEG C.
In a preferred embodiment, to display processing product carry out vacuum heat treatment specifically include: heat treatment air pressure
Less than 0.001Pa, heat treatment time 30-50h, heat treatment temperature is 600-700 DEG C.
In a preferred embodiment, fine powder is carried out post-processing and specifically includes following step by fine powder partial size less than 60 mesh
It is rapid: to configure the hydrochloric acid solution of 7-9mol/L；Fine powder is poured into hydrochloric acid solution, mixed liquor is obtained；Microwave shake is carried out to mixed liquor
It is dynamic, and the mixed liquor after microwave vibration is filtered；Solid after filtering is cleaned to pH value and is in neutrality；It will cleaning
Solid afterwards is dried.
In a preferred embodiment, the ratio between amount of substance of iron chloride and ferric sulfate is 1:(1-1.5), by iron chloride
It is put into the flask equipped with distilled water after completely dissolution with ferric sulfate, the concentration of iron chloride is 1-3mol/L.
In a preferred embodiment, the fine powder after post-processing is added in ferroferric oxide gel precipitating, stirring
And stand and specifically included with obtaining magnetic mixed liquor: it in ferroferric oxide gel precipitating is added in the fine powder after post-processing
Afterwards, it is passed through argon gas into mixture, and is stirred using mechanical agitator, machine mixer revolving speed is 300-400r/min,
Whipping temp is 10-20 DEG C, mixing time 20-40min.
The present invention also provides a kind of straw waste recycling and reusing adsorbent, which is by as one of aforementioned
The preparation of reason method.
The present invention also provides a kind of straw waste recycling and reusing adsorbents as the aforementioned in a removal agricultural land huge sum of money
Belong to the application in pollution course.
Compared with prior art, the invention has the following beneficial effects:
For soil cadmium pollution problem, the prior art proposes a series of solutions, such as the dispensing of large-scale use
Caustic soda or lime method, this method are mainly used " alkalescent chemical precipitation emergency is except cadmium drying technique ", are exactly thrown in sewage
Put caustic soda or lime and aluminium polychloride.It launches caustic soda or lime improves the pH value in contaminated river, make water in weak base
Property, cadmium ion will be precipitated at this time with cadmium carbonate, cadmium hydroxide fine particle；And aluminium polychloride can then mix these fine particles
It coagulates and forms bulky grain precipitating not soluble in water together while isolating Free water.Bulky grain after flocculation precipitates to form sludge
It is transported on the strainer of concentration gravity dehydration of belt filter press, Free water is separated under gravity, and formation is not flowed
The sludge of dynamic state.Although this method can remove cadmium, the problem of then the problem of bringing is exactly saline Land, make
Solve the problems, such as that cadmium pollution will lead to the discarded of soil entirety in this way.In addition there are in some foregoing patented technologies
The processing soil treatment agent of proposition, although these processing soil treatment agents can solve the problems, such as cadmium pollution to a certain extent, these
Inorganic agent itself also includes some toxic metal ions (although these Metals are lower than cadmium ion), and at some biologies
Although managing agent does not include noxious material, often treatment effect is poor for biological treatment agent.In view of the above problems in the prior art,
The invention proposes a kind of pure biological soil inorganic agent (based on straw biological charcoal), pure biological soil inorganic agents of the invention
It is highly-safe almost without toxicity (only including iron ion), while the adsorption capacity of the application (specifically may refer to experiment knot by force
Fruit part), significantly improve adsorption capacity and efficiency.
Detailed description of the invention
Fig. 1 is straw waste recycling and reusing processing method flow chart according to an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
Fig. 1 is straw waste recycling and reusing processing method flow chart according to an embodiment of the present invention.As shown,
Straw waste recycling and reusing processing method of the invention includes the following steps:
Step 101: preparing corn stover, and corn stover is cleaned；
Step 102: the corn stover after cleaning is dried；
Step 103: the corn stover after drying being crushed, stalk particle is obtained；
Step 104: stalk particle is added liquor zinci chloridi and stirred evenly, obtains stalk-chlorine by configuration liquor zinci chloridi
Change zinc solution；
Step 105: stalk-liquor zinci chloridi being carried out to display processing, obtains displaying processing product；
Step 106: carrying out vacuum heat treatment to processing product is displayed, obtain granular disintegration；
Step 107: granular disintegration being ground into fine powder, and fine powder is post-processed；
Step 108: iron chloride and ferric sulfate being put into the flask equipped with distilled water and sufficiently dissolved, ammonia spirit system is added
Obtain ferroferric oxide gel precipitating；
Step 109: the fine powder after post-processing being added in ferroferric oxide gel precipitating, stirs and stands to obtain magnetic
Property mixed liquor；
Step 110: filtering magnetic mixed liquor obtains filtration product；And
Step 111: filtration product being dried, straw waste recycling and reusing product is obtained.
Embodiment 1
A kind of straw waste recycling and reusing processing method, processing method include the following steps: preparation corn stover, and right
Corn stover is cleaned；Corn stover after cleaning is dried；Corn stover after drying is crushed, straw are obtained
Stalk particle；Liquor zinci chloridi is configured, liquor zinci chloridi is added in stalk particle and is stirred evenly, stalk-liquor zinci chloridi is obtained；
Stalk-liquor zinci chloridi is carried out to display processing, obtains displaying processing product；Vacuum heat treatment is carried out to processing product is displayed,
Obtain granular disintegration；Granular disintegration is ground into fine powder, and fine powder is post-processed；Iron chloride and ferric sulfate are put into
It is sufficiently dissolved in flask equipped with distilled water, ammonia spirit is added, ferroferric oxide gel precipitating is made；After post-processing
Fine powder is added in ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixed liquor；Filtering magnetic mixed liquor, is obtained
Filter product；Filtration product is dried, straw waste recycling and reusing product is obtained.Corn stover after cleaning is dried
It is dry to specifically include: the corn stover after cleaning to be put into baking oven, drying temperature is 70 DEG C, and the corn stalk after cleaning is known in drying
Stalk keeps constant weight amount.Liquor zinci chloridi concentration is 3mol/L, and straw content is 70g stalk/L chlorination in stalk-liquor zinci chloridi
Zinc solution, liquor zinci chloridi and stirring evenly is added in stalk particle and is specifically included: stirring is using mechanical stirring, machine mixer
Revolving speed is 200r/min, and whipping temp is 40 DEG C, mixing time 20min.Stalk-liquor zinci chloridi is carried out to display processing tool
Body includes: that assembly time is 20h, and displaying temperature is 100 DEG C.It is specifically included to processing product progress vacuum heat treatment is displayed: heat
It handles air pressure and is less than 0.001Pa, heat treatment time 30h, heat treatment temperature is 600 DEG C.Fine powder partial size is less than 60 mesh, by fine powder
It carries out post-processing and specifically comprises the following steps: the hydrochloric acid solution for configuring 7mol/L；Fine powder is poured into hydrochloric acid solution, is mixed
Liquid；Microwave vibration is carried out to mixed liquor, and the mixed liquor after microwave vibration is filtered；By the solid cleaning after filtering
It is in neutrality to pH value；Solid after cleaning is dried.The ratio between amount of substance of iron chloride and ferric sulfate is 1:1, by chlorine
Change iron and ferric sulfate is put into the flask equipped with distilled water after completely dissolution, the concentration of iron chloride is 1mol/L.It will be post-processed
Fine powder afterwards is added in ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixed liquor and specifically include: will post-process
After fine powder later is added in ferroferric oxide gel precipitating, be passed through argon gas into mixture, and using mechanical agitator into
Row stirring, machine mixer revolving speed are 300r/min, and whipping temp is 10 DEG C, mixing time 20min.
Embodiment 2
A kind of straw waste recycling and reusing processing method, processing method include the following steps: preparation corn stover, and right
Corn stover is cleaned；Corn stover after cleaning is dried；Corn stover after drying is crushed, straw are obtained
Stalk particle；Liquor zinci chloridi is configured, liquor zinci chloridi is added in stalk particle and is stirred evenly, stalk-liquor zinci chloridi is obtained；
Stalk-liquor zinci chloridi is carried out to display processing, obtains displaying processing product；Vacuum heat treatment is carried out to processing product is displayed,
Obtain granular disintegration；Granular disintegration is ground into fine powder, and fine powder is post-processed；Iron chloride and ferric sulfate are put into
It is sufficiently dissolved in flask equipped with distilled water, ammonia spirit is added, ferroferric oxide gel precipitating is made；After post-processing
Fine powder is added in ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixed liquor；Filtering magnetic mixed liquor, is obtained
Filter product；Filtration product is dried, straw waste recycling and reusing product is obtained.Corn stover after cleaning is dried
It is dry to specifically include: the corn stover after cleaning to be put into baking oven, drying temperature is 90 DEG C, and the corn stalk after cleaning is known in drying
Stalk keeps constant weight amount.Liquor zinci chloridi concentration is 6mol/L, and straw content is 120g stalk/L chlorination in stalk-liquor zinci chloridi
Zinc solution, liquor zinci chloridi and stirring evenly is added in stalk particle and is specifically included: stirring is using mechanical stirring, machine mixer
Revolving speed is 300r/min, and whipping temp is 60 DEG C, mixing time 40min.Stalk-liquor zinci chloridi is carried out to display processing tool
Body includes: that assembly time is 40h, and displaying temperature is 130 DEG C.It is specifically included to processing product progress vacuum heat treatment is displayed: heat
It handles air pressure and is less than 0.001Pa, heat treatment time 50h, heat treatment temperature is 700 DEG C.Fine powder partial size is less than 60 mesh, by fine powder
It carries out post-processing and specifically comprises the following steps: the hydrochloric acid solution for configuring 9mol/L；Fine powder is poured into hydrochloric acid solution, is mixed
Liquid；Microwave vibration is carried out to mixed liquor, and the mixed liquor after microwave vibration is filtered；By the solid cleaning after filtering
It is in neutrality to pH value；Solid after cleaning is dried.The ratio between amount of substance of iron chloride and ferric sulfate is 1:1.5, will
Iron chloride and ferric sulfate are put into the flask equipped with distilled water after completely dissolution, and the concentration of iron chloride is 3mol/L.It will post-processing
Fine powder later is added in ferroferric oxide gel precipitating, stirs and stand to obtain magnetic mixed liquor and specifically include: by after
After fine powder after reason is added in ferroferric oxide gel precipitating, argon gas is passed through into mixture, and use mechanical agitator
It is stirred, machine mixer revolving speed is 400r/min, and whipping temp is 20 DEG C, mixing time 40min.
Embodiment 3
A kind of straw waste recycling and reusing processing method, processing method include the following steps: preparation corn stover, and right
Corn stover is cleaned；Corn stover after cleaning is dried；Corn stover after drying is crushed, straw are obtained
Stalk particle；Liquor zinci chloridi is configured, liquor zinci chloridi is added in stalk particle and is stirred evenly, stalk-liquor zinci chloridi is obtained；
Stalk-liquor zinci chloridi is carried out to display processing, obtains displaying processing product；Vacuum heat treatment is carried out to processing product is displayed,
Obtain granular disintegration；Granular disintegration is ground into fine powder, and fine powder is post-processed；Iron chloride and ferric sulfate are put into
It is sufficiently dissolved in flask equipped with distilled water, ammonia spirit is added, ferroferric oxide gel precipitating is made；After post-processing
Fine powder is added in ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixed liquor；Filtering magnetic mixed liquor, is obtained
Filter product；Filtration product is dried, straw waste recycling and reusing product is obtained.Corn stover after cleaning is dried
It is dry to specifically include: the corn stover after cleaning to be put into baking oven, drying temperature is 75 DEG C, and the corn stalk after cleaning is known in drying
Stalk keeps constant weight amount.Liquor zinci chloridi concentration is 4mol/L, and straw content is 80g stalk/L chlorination in stalk-liquor zinci chloridi
Zinc solution, liquor zinci chloridi and stirring evenly is added in stalk particle and is specifically included: stirring is using mechanical stirring, machine mixer
Revolving speed is 250r/min, and whipping temp is 50 DEG C, mixing time 25min.Stalk-liquor zinci chloridi is carried out to display processing tool
Body includes: that assembly time is 25h, and displaying temperature is 110 DEG C.It is specifically included to processing product progress vacuum heat treatment is displayed: heat
It handles air pressure and is less than 0.001Pa, heat treatment time 35h, heat treatment temperature is 650 DEG C.Fine powder partial size is less than 60 mesh, by fine powder
It carries out post-processing and specifically comprises the following steps: the hydrochloric acid solution for configuring 8mol/L；Fine powder is poured into hydrochloric acid solution, is mixed
Liquid；Microwave vibration is carried out to mixed liquor, and the mixed liquor after microwave vibration is filtered；By the solid cleaning after filtering
It is in neutrality to pH value；Solid after cleaning is dried.The ratio between amount of substance of iron chloride and ferric sulfate is 1:1.1, will
Iron chloride and ferric sulfate are put into the flask equipped with distilled water after completely dissolution, and the concentration of iron chloride is 1.5mol/L.By after
Fine powder after reason is added in ferroferric oxide gel precipitating, stirs and stand to obtain magnetic mixed liquor and specifically include: will after
After fine powder after processing is added in ferroferric oxide gel precipitating, argon gas is passed through into mixture, and use mechanical stirring
Device is stirred, and machine mixer revolving speed is 350r/min, and whipping temp is 15 DEG C, mixing time 25min.
Embodiment 4
A kind of straw waste recycling and reusing processing method, processing method include the following steps: preparation corn stover, and right
Corn stover is cleaned；Corn stover after cleaning is dried；Corn stover after drying is crushed, straw are obtained
Stalk particle；Liquor zinci chloridi is configured, liquor zinci chloridi is added in stalk particle and is stirred evenly, stalk-liquor zinci chloridi is obtained；
Stalk-liquor zinci chloridi is carried out to display processing, obtains displaying processing product；Vacuum heat treatment is carried out to processing product is displayed,
Obtain granular disintegration；Granular disintegration is ground into fine powder, and fine powder is post-processed；Iron chloride and ferric sulfate are put into
It is sufficiently dissolved in flask equipped with distilled water, ammonia spirit is added, ferroferric oxide gel precipitating is made；After post-processing
Fine powder is added in ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixed liquor；Filtering magnetic mixed liquor, is obtained
Filter product；Filtration product is dried, straw waste recycling and reusing product is obtained.Corn stover after cleaning is dried
It is dry to specifically include: the corn stover after cleaning to be put into baking oven, drying temperature is 80 DEG C, and the corn stalk after cleaning is known in drying
Stalk keeps constant weight amount.Liquor zinci chloridi concentration is 5mol/L, and straw content is 100g stalk/L chlorination in stalk-liquor zinci chloridi
Zinc solution, liquor zinci chloridi and stirring evenly is added in stalk particle and is specifically included: stirring is using mechanical stirring, machine mixer
Revolving speed is 250r/min, and whipping temp is 50 DEG C, mixing time 30min.Stalk-liquor zinci chloridi is carried out to display processing tool
Body includes: that assembly time is 30h, and displaying temperature is 120 DEG C.It is specifically included to processing product progress vacuum heat treatment is displayed: heat
It handles air pressure and is less than 0.001Pa, heat treatment time 40h, heat treatment temperature is 650 DEG C.Fine powder partial size is less than 60 mesh, by fine powder
It carries out post-processing and specifically comprises the following steps: the hydrochloric acid solution for configuring 8mol/L；Fine powder is poured into hydrochloric acid solution, is mixed
Liquid；Microwave vibration is carried out to mixed liquor, and the mixed liquor after microwave vibration is filtered；By the solid cleaning after filtering
It is in neutrality to pH value；Solid after cleaning is dried.The ratio between amount of substance of iron chloride and ferric sulfate is 1:1.2, will
Iron chloride and ferric sulfate are put into the flask equipped with distilled water after completely dissolution, and the concentration of iron chloride is 2mol/L.It will post-processing
Fine powder later is added in ferroferric oxide gel precipitating, stirs and stand to obtain magnetic mixed liquor and specifically include: by after
After fine powder after reason is added in ferroferric oxide gel precipitating, argon gas is passed through into mixture, and use mechanical agitator
It is stirred, machine mixer revolving speed is 350r/min, and whipping temp is 15 DEG C, mixing time 30min.
Comparative example 1
Difference from Example 1 is: not carrying out displaying processing to stalk-liquor zinci chloridi, directly progress Vacuum Heat
Processing.
Comparative example 2
Difference from Example 1 is: not post-processing to fine powder.
Comparative example 3
Difference from Example 1 is: the corn stover after cleaning being carried out drying and is specifically included: by the jade after cleaning
Rice stalk is put into baking oven, and drying temperature is 110 DEG C, and drying knows that the corn stover after cleaning keeps constant weight amount.
Comparative example 4
Difference from Example 1 is: liquor zinci chloridi concentration is 8mol/L, and stalk contains in stalk-liquor zinci chloridi
Amount is 130g stalk/L liquor zinci chloridi.
Comparative example 5
Difference from Example 1 is: liquor zinci chloridi and stirring evenly is added in stalk particle and is specifically included: stirring
Using mechanical stirring, machine mixer revolving speed is 40r/min, and whipping temp is 30 DEG C, mixing time 10min.
Comparative example 6
Difference from Example 1 is: carrying out displaying processing specifically including to stalk-liquor zinci chloridi: assembly time
For 50h, displaying temperature is 140 DEG C.
Comparative example 7
Difference from Example 1 is: specifically including to processing product progress vacuum heat treatment is displayed: heat treatment air pressure
Less than 0.001Pa, heat treatment time 60h, heat treatment temperature is 550 DEG C.
Comparative example 8
Difference from Example 1 is: fine powder is carried out post-processing and specifically includes following step by fine powder partial size less than 30 mesh
It is rapid: to configure the hydrochloric acid solution of 10mol/L；Fine powder is poured into hydrochloric acid solution, mixed liquor is obtained；Microwave shake is carried out to mixed liquor
It is dynamic, and the mixed liquor after microwave vibration is filtered；Solid after filtering is cleaned to pH value and is in neutrality；It will cleaning
Solid afterwards is dried.
Comparative example 9
Difference from Example 1 is: the ratio between amount of substance of iron chloride and ferric sulfate is 1:2, by iron chloride and sulphur
Sour iron is put into the flask equipped with distilled water after completely dissolution, and the concentration of iron chloride is 3.5mol/L.
Comparative example 10
Difference from Example 1 is: the fine powder after post-processing being added in ferroferric oxide gel precipitating, stirring
And stand and specifically included with obtaining magnetic mixed liquor: it in ferroferric oxide gel precipitating is added in the fine powder after post-processing
Afterwards, it is passed through argon gas into mixture, and is stirred using mechanical agitator, machine mixer revolving speed is 500r/min, stirring
Temperature is 5 DEG C, mixing time 10min.
Experiment test: isothermal adsorption test uses the Ca (NO3) 2 of 0.01mol/L as back-ground electolyte, and Cd (II) is arranged
Initial mass concentration is 40mg/L, is separately added into 50mLCd (II) solution in 100mL centrifuge tube, solution ph 5, embodiment
The additive amount of the adsorbent of 1-3 and comparative example 1-10 is 1.4g/L, and constant temperature oscillation is distinguished under the conditions of 25 DEG C, 150r/min
For 24 hours, adsorption time 1h is balanced adsorbance (mg/g) according to isothermal adsorption test.It utilizes vibrating specimen magnetometer (VSM)
The saturation magnetization (emu/g) of testing example 1-3 and comparative example 1-10, test method follow " College Physics " textbook
The test method of middle announcement, the present invention repeat no more.Test result is shown in Table 1.
Table 1
| Equilibrium adsorption capacity (mg/g) | Saturation magnetization (emu/g) | |
| Embodiment 1 | 45 | 13 |
| Embodiment 2 | 47 | 12 |
| Embodiment 3 | 48 | 13 |
| Comparative example 1 | 32 | 9 |
| Comparative example 2 | 34 | 8 |
| Comparative example 3 | 35 | 9 |
| Comparative example 4 | 30 | 7 |
| Comparative example 5 | 30 | 8 |
| Comparative example 6 | 28 | 9 |
| Comparative example 7 | 28 | 8 |
| Comparative example 8 | 30 | 9 |
| Comparative example 9 | 34 | 7 |
| Comparative example 10 | 31 | 7 |
In conclusion pure biological soil inorganic agent of the invention is almost without toxicity, it is highly-safe, while the absorption of the application
Ability is strong (equilibrium adsorption capacity and saturation magnetization are higher), and adsorption capacity is strong, and adsorption effect is good.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of straw waste recycling and reusing processing method, it is characterised in that: straw waste recycling and reusing processing side
Method includes the following steps:
Prepare corn stover, and the corn stover is cleaned；
Corn stover after cleaning is dried；
Corn stover after drying is crushed, stalk particle is obtained；
Liquor zinci chloridi is configured, the liquor zinci chloridi is added in the stalk particle and is stirred evenly, stalk-zinc chloride is obtained
Solution；
Stalk-the liquor zinci chloridi is carried out displaying processing, obtains displaying processing product；
Vacuum heat treatment is carried out to the processing product of displaying, obtains granular disintegration；
The granular disintegration is ground into fine powder, and the fine powder is post-processed；
Iron chloride and ferric sulfate are put into the flask equipped with distilled water and sufficiently dissolved, ammonia spirit is added, ferroso-ferric oxide is made
Colloidal precipitation；
Fine powder after post-processing is added in the ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixing
Liquid；
The magnetic mixed liquor is filtered, filtration product is obtained；And dry the filtration product, it obtains straw waste and returns
It receives and recycles product.
2. straw waste recycling and reusing processing method as described in claim 1, it is characterised in that: by the corn stalk after cleaning
Stalk carries out drying and specifically includes: the corn stover after cleaning being put into baking oven, drying temperature is 70-90 DEG C, and drying is known clear
Corn stover after washing keeps constant weight amount.
3. straw waste recycling and reusing processing method as claimed in claim 2, it is characterised in that: the liquor zinci chloridi is dense
Degree is 3-6mol/L, and straw content is 70-120g stalk/L liquor zinci chloridi in the stalk-liquor zinci chloridi, by the straw
Stalk particle is added the liquor zinci chloridi and stirs evenly and specifically includes: stirring is using mechanical stirring, machine mixer revolving speed
200-300r/min, whipping temp are 40-60 DEG C, mixing time 20-40min.
4. straw waste recycling and reusing processing method as claimed in claim 3, it is characterised in that: to the stalk-chlorination
Zinc solution, which carries out displaying processing, to be specifically included: assembly time 20-40h, displaying temperature is 100-130 DEG C.
5. straw waste recycling and reusing processing method as claimed in claim 4, it is characterised in that: display processing production to described
Object carries out vacuum heat treatment and specifically includes: heat treatment air pressure is less than 0.001Pa, heat treatment time 30-50h, heat treatment temperature
It is 600-700 DEG C.
6. straw waste recycling and reusing processing method as claimed in claim 5, it is characterised in that: the fine powder partial size is less than
The fine powder is carried out post-processing and specifically comprises the following steps: the hydrochloric acid solution for configuring 7-9mol/L by 60 mesh；The fine powder is fallen
Enter in the hydrochloric acid solution, obtains mixed liquor；Microwave vibration is carried out to the mixed liquor, and to the mixed liquor after microwave vibration
It is filtered；Solid after filtering is cleaned to pH value and is in neutrality；Solid after cleaning is dried.
7. straw waste recycling and reusing processing method as claimed in claim 6, it is characterised in that: the iron chloride and described
The ratio between amount of substance of ferric sulfate is 1:(1-1.5), iron chloride and ferric sulfate are put into the flask equipped with distilled water sufficiently molten
Xie Hou, the concentration of iron chloride are 1-3mol/L.
8. straw waste recycling and reusing processing method as claimed in claim 7, it is characterised in that: will be thin after post-processing
Powder is added in the ferroferric oxide gel precipitating, stirs and stands to obtain magnetic mixed liquor and specifically include: will post-process it
After fine powder afterwards is added in the ferroferric oxide gel precipitating, argon gas is passed through into mixture, and use mechanical agitator
It is stirred, machine mixer revolving speed is 300-400r/min, and whipping temp is 10-20 DEG C, mixing time 20-40min.
9. a kind of straw waste recycling and reusing adsorbent, it is characterised in that: the adsorbent is by one of such as claim 1-8
The processing method preparation.
10. a kind of straw waste recycling and reusing adsorbent as claimed in claim 9 is in removal agricultural land heavy metal pollution
Application in the process.
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