CN106540649B - A kind of green syt of the manganese calcium nano adsorber constructed by egg shell and its application - Google Patents
A kind of green syt of the manganese calcium nano adsorber constructed by egg shell and its application Download PDFInfo
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- CN106540649B CN106540649B CN201611115256.2A CN201611115256A CN106540649B CN 106540649 B CN106540649 B CN 106540649B CN 201611115256 A CN201611115256 A CN 201611115256A CN 106540649 B CN106540649 B CN 106540649B
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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
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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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
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
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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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
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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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- 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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4881—Residues from shells, e.g. eggshells, mollusk shells
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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
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Abstract
The invention belongs to waste utilization and composite technology range, green synthesis method and its application of a kind of manganese calcium nano adsorber constructed by egg shell are specifically disclosed.The present invention passes through the CaO that high-temperature roasting obtains by raw material of egg shell, then by loading different amounts of KMnO4Sample is washed, it is sintered after dry, finally obtains manganese calcium nano adsorber by centrifuge separation as the source Mn.The manganese calcium nano adsorber that the present invention is prepared; preparation method is simple, pollution-free; the heavy metal in industrial wastewater can effectively be handled; treatment effeciency is high; raw material egg shell is easy to get, and belongs to waste utilization, low in cost; with good economic efficiency and environmental benefit scale of input metaplasia can produce well.
Description
Technical field
The invention belongs to environment and Material Field, the green of specifically a kind of manganese calcium nano adsorber constructed by egg shell
Synthesis and its application.
Background technique
With the continuous improvement of China's industrial level, plating, metallurgy, casting, mining, petroleum, battery, machinery and printing etc.
Industrial trade flourishes, and the discharge of industrial wastewater becomes the main source of Heavy Metals In Environment.Heavy metal cannot be by ring
Microbial degradation in border, the big gas and water and soil environment that sustaining breakdown people are depended on for existence；On the other hand, animals and plants energy
Heavy metal in enough enrichments and accumulation environment eventually enters into human body, to the central nervous system, endocrine system, immune system of people
Adverse effect can be all caused with bone.Therefore, the heavy metal handled in industrial wastewater has great importance to environment.Handle work
There are many method of industry heavy metal ions in wastewater, mainly there is chemical precipitation method, ion-exchange, physical and chemical adsorption method, biology
Facture, liquid film separation and other comprehensive treatment methods.
The characteristics of method of processing heavy metal wastewater thereby is absorption method both at home and abroad at present, this method is easy to operate, cheap
The advantages of being easy to get, but adsorbent price is generally higher, thus develop cheap, high efficiency, environment-friendly type, recyclable adsorbent will be
The Main way of heavy metal ion adsorbed research.
With advances in technology with development, the living standard of the mankind is higher and higher, the but day of the heavy metal pollution in water environment
Increasingly weigh.Therefore effective method is found to handle the heavy metal ion in waste water as urgent problem to be solved.Using high hole
It is a kind of effective means that nanometer 3D flaky material, which carries out absorption,.And the unique structure of stratified material has it in many fields
Good application prospect.
In recent years, the Mn oxide with different valence state is adsorbing, in terms of catalysis, electrochemistry, battery, supercapacitor
The great interest of researcher is caused with potential application.Wherein Mn3O4It is proved to be a kind of good heavy metal adsorption material
Material, and have the characteristics that price is low, high specific surface area, environment compatibility, and the extensive concern by researcher.
Summary of the invention
The purpose of the present invention is to provide a kind of green syt of manganese calcium nano adsorber constructed by egg shell and its answer
With.The present invention has unique layer structure, and energy using porous egg shell as templated synthesis manganese calcium nano-compound adsorbent
Speed adsorbs the heavy metal in waste water fastly, and adsorption effect is excellent.
For achieving the above object, the present invention adopts the following technical scheme:
It is a kind of by egg shell construct with stratiform, efficient manganese calcium nano adsorber green syt the following steps are included:
(1) egg shell is collected, the impurity for removing soil and adherency is cleaned with deionized water, egg shell is immersed in 80 °C
Water in after a period of time, artificial removal's inner membrance is placed in baking oven, dries 12-24h under 100-120 °C, obtains dry egg
Shell；Resulting egg shell is put into Muffle furnace, rises to 800 °C -1050 °C with the heating rate of 5 °C/min, high-temperature roasting
And 1 h is kept the temperature, obtain calcium oxide template.
(2) preparation of manganese calcium nano adsorber:
Calcium oxide template obtained in (1) is evenly dispersed into ethanol solution, 30 min are stirred, mixed solution is obtained；
Then a certain amount of permanganate is slowly poured into mixed solution, stirs 12-24 h, whole process is under the system of nitrogen protection
It is reacted, then reaction solution is centrifuged, ethanol solution washing；Sample after washing is put into 70 in vacuum drying oven
Dry 12 h, finally obtain manganese calcium nano adsorber under °C.
Wherein, the molar ratio of permanganate and calcium oxide template is 1:1 ~ 1:10, and permanganate is potassium permanganate or height
Violent acid sodium；In ethanol solution, the volume ratio of deionized water and ethyl alcohol is 0:1-1:4.
The beneficial effects of the present invention are:
1) for the present invention using calcium oxide as templated synthesis manganese calcium nano adsorber, Mn oxide has very high chemistry living
Property and adsorption capacity, are widely used in environmental area, belong to environmentally friendly material；The egg shell of one of raw material have it is low at
This, it is quality-high and inexpensive, the advantages of waste recycling；Obtained manganese calcium nano adsorber has speed fast heavy metal adsorption, and absorption is held
Measure high feature.
2) present invention has unique nanometer laminated structure by the manganese calcium nano adsorber that egg shell is constructed.
3) equipment required for preparation method of the invention is easily obtained, and technological operation is simple, and process conditions are simple, is fitted
It is strong with property, environmentally protective, utilization easy to spread.
Detailed description of the invention
Fig. 1 is the microscopic appearance of the egg shell in the embodiment of the present invention 1 after high-temperature calcination；
Fig. 2 is the scanning electron microscope diagram of the manganese calcium nano adsorber prepared in the embodiment of the present invention 1；
Fig. 3 is the high and low transmission electron microscope figure of the manganese calcium nano adsorber prepared in the embodiment of the present invention 1；
Fig. 4 is the Pb of the manganese calcium nano adsorber for preparing in the embodiment of the present invention 1 to 1g/L2+Curve of adsorption kinetics；
Fig. 5 is curve of adsorption kinetics of the manganese calcium nano adsorber to different elements of Ca:Mn=5:1 in embodiment 2；
Fig. 6 is the manganese calcium nano adsorber of Ca:Mn=10:1 in embodiment 3 and the Mn of business3O4According to its absorption property institute
The curve of adsorption kinetics obtained.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right below in conjunction with attached drawing, that is, embodiment
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can combine.
Embodiment 1
A kind of green syt of the calcium nano adsorber constructed by egg shell and its application, specific steps are as follows:
(1) preparation of calcium oxide (CaO): collecting egg shell, and the impurity for removing soil and adherency is cleaned with deionized water, will
Egg shell is immersed in 80 °C of water after a period of time, and artificial removal's inner membrance is placed in baking oven, is dried 12h under 120 °C, is obtained
Dry egg shell；Resulting egg shell is put into Muffle furnace, 1050 °C of heat preservations 1 are risen to the heating rate of 5 °C/min
H obtains calcium oxide template；
(2) preparation of manganese calcium nano adsorber: the evenly dispersed (deionization into ethanol solution of the calcium oxide template of 2.8 g
The volume ratio of water and ethyl alcohol is 0:1), 30 min are stirred, mixed solution is obtained；Then the potassium permanganate of 7.9 g is slowly poured into
In mixed solution, 24 h are stirred, whole process is reacted under the system of nitrogen protection, then reaction solution is centrifuged,
Ethanol washing；Sample after washing is put into vacuum drying oven and keeps the temperature 12 h under 70 °C and is dried, finally obtains manganese calcium nanometer
Adsorbent；Wherein the molar ratio of Ca, Mn are 1:1；
(3) manganese calcium nano adsorber made from embodiment 1 is used for the Pb of 1 g/L2+Waste water absorption.Use atomic absorption spectrophotometry
The concentration of photometer test absorption front and back Pb In Exhausted Water ion, the adsorption concentration for testing the manganese calcium nano adsorption material that is applied can
To reach 85 % or more of lead concentration in raw wastewater, adsorption capacity is 1550 mg/g.
Embodiment 2
A kind of green syt of the manganese calcium nano adsorber constructed by egg shell and its application, specific steps are as follows:
(1) preparation of calcium oxide (CaO): collecting egg shell, and the impurity for removing soil and adherency is cleaned with deionized water, will
Egg shell is immersed in 80 °C of water after a period of time, and artificial removal's inner membrance is placed in baking oven, and 12 h are dried under 100 °C, are obtained
Dry egg shell；Resulting egg shell is put into Muffle furnace, it is small to rise to 800 °C of heat preservations 1 with the heating rate of 5 °C/min
When, obtain calcium oxide template；
(2) preparation of manganese calcium nano adsorber: the evenly dispersed (deionization into ethanol solution of the calcium oxide template of 2.8 g
The volume ratio of water and ethyl alcohol is 1:4), 30 min are stirred, mixed solution is obtained；Then the sodium permanganate of 1.58 g is slowly poured into
In mixed solution, 18 h are stirred, whole process is reacted under the system of nitrogen protection, then reaction solution is centrifuged,
Ethanol washing；Sample after washing is put into vacuum drying oven and keeps the temperature 12 h under 70 °C and is dried, finally obtains manganese calcium nanometer
Adsorbent；Wherein the molar ratio of Ca, Mn are 5:1；
(3) manganese calcium nano adsorber made from embodiment 2 is used for the Cu of 40 mg/L2+、Ag+、Eu2+And Cd2+Waste water is inhaled
It is attached.The concentration of absorption front and back Cu in waste water ion, silver ion, europium ion and cadmium ion is tested with atomic absorption spectrophotometer,
Test be applied manganese calcium nano adsorption material adsorption concentration can achieve copper ion in raw wastewater, silver ion, europium ion and
For the concentration of cadmium ion respectively up to 95%, 93%, 90%, 80% or more, adsorption capacity is respectively 151,134,96.0 and 81.5 mg/g.
Embodiment 3
A kind of green syt of the manganese calcium nano adsorber constructed by egg shell and its application, specific steps are as follows:
(1) preparation of calcium oxide (CaO): collecting egg shell, and the impurity for removing soil and adherency is cleaned with deionized water, will
Egg shell is immersed in 80 °C of water after a period of time, and artificial removal's inner membrance is placed in baking oven, and 12 h are dried under 100 °C, are obtained
Dry egg shell；Resulting egg shell is put into Muffle furnace, 950 °C of 1 h of heat preservation are risen to the heating rate of 5 °C/min,
Obtain calcium oxide template；
(2) preparation of manganese calcium nano adsorber: the evenly dispersed (deionization into ethanol solution of the calcium oxide template of 2.8 g
The volume ratio of water and ethyl alcohol is 1:9), 30 min are stirred, mixed solution is obtained；Then the potassium permanganate of 0.79 g is slowly poured into
In mixed solution, 12 h are stirred, whole process is reacted under the system of nitrogen protection, then reaction solution is centrifuged,
Ethanol washing；Sample after washing is put into vacuum drying oven and keeps the temperature 12 h under 70 °C and is dried, finally obtains manganese calcium nanometer
Adsorbent；Wherein the molar ratio of Ca, Mn are 10:1；
(3) by the Mn of manganese calcium nano adsorber and business made from embodiment 33O4 It is respectively used to the Pb of 40mg/L2+Waste water
Absorption.The concentration that absorption front and back Pb In Exhausted Water ion is tested with atomic absorption spectrophotometer, tests the manganese calcium nanometer that is applied
The adsorption concentration of adsorbent can achieve 95% or more of lead concentration in raw wastewater, adsorption capacity 156mg/g, and tests and obtain
The Mn of business3O4Adsorption concentration can only achieve 20% of lead concentration in raw wastewater, adsorption capacity 25mg/g.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description should not be considered as limitative to the invention.After those skilled in the art have read above content, for the present invention
A variety of modifications and substitutions will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a kind of green synthesis method for the manganese calcium nano adsorber constructed by egg shell, it is characterised in that: by egg shell through height
The CaO that temperature roasting obtains is dispersed in ethanol solution and stirs certain time；Then permanganate is added into above-mentioned solution,
12-24 h is stirred to react under the system of nitrogen protection；Then reaction solution is centrifuged, cleaning solution washing, washing
12 h are dried in vacuo under 70 °C of sample afterwards, obtain manganese calcium nano adsorber；Wherein in obtained adsorbent, manganese, calcium rub
You are than being 1:1 ~ 1:10.
2. a kind of green synthesis method of manganese calcium nano adsorber constructed by egg shell according to claim 1, special
Sign is: in the ethanol solution, the volume ratio of deionized water and ethyl alcohol is 0:1 ~ 1:4.
3. a kind of green synthesis method of manganese calcium nano adsorber constructed by egg shell according to claim 1, special
Sign is: the permanganate is potassium permanganate or high violent sour sodium.
4. a kind of green synthesis method of manganese calcium nano adsorber constructed by egg shell according to claim 1, special
Sign is: the molar ratio of permanganate and calcium oxide is 1:1 ~ 1:10.
5. a kind of green synthesis method of manganese calcium nano adsorber constructed by egg shell according to claim 1, special
Sign is: the CaO that the high-temperature roasting obtains be using egg shell as raw material, first by egg shell after repeatedly washing with 5 °C/
The heating rate of min rises to 800 °C -1050 °C, keeps the temperature 1 h, finally obtains CaO.
6. a kind of green synthesis method of manganese calcium nano adsorber constructed by egg shell according to claim 1, special
Sign is: the solution that the cleaning solution is deionized water and ethyl alcohol volume ratio is 0:1 ~ 1:4.
7. a kind of manganese calcium nano adsorber of method preparation as claimed in any one of claims 1 to 6.
8. a kind of application of manganese calcium nano adsorber as claimed in claim 7 in terms of handling heavy metals in industrial wastewater.
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| CN101913676B (en) * | 2010-08-04 | 2011-11-16 | 南京信息工程大学 | Method for removing phosphorus in water by utilizing ferric salt-modified eggshells |
| CN102614841B (en) * | 2012-04-17 | 2013-04-17 | 湖南农业大学 | Method for removing arsenic from water body by using potassium permanganate (KMnO4) modified egg shells |
| CN102658090B (en) * | 2012-04-20 | 2014-09-03 | 大连交通大学 | Eggshell heavy metal ion adsorbent and preparation method thereof |
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