CN117282400A - Application method of utilizing waste glass to hydrothermally synthesize analcite as heavy metal adsorption material in wastewater - Google Patents
Application method of utilizing waste glass to hydrothermally synthesize analcite as heavy metal adsorption material in wastewater Download PDFInfo
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 66
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000002699 waste material Substances 0.000 title claims abstract description 27
- 239000011521 glass Substances 0.000 title claims abstract description 25
- 239000002351 wastewater Substances 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 title claims abstract description 17
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 28
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 150000002500 ions Chemical class 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 238000005303 weighing Methods 0.000 claims abstract description 21
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001431 copper ion Inorganic materials 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 239000006228 supernatant Substances 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 claims description 8
- 229910021536 Zeolite Inorganic materials 0.000 claims description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 7
- 239000010457 zeolite Substances 0.000 claims description 7
- 239000003002 pH adjusting agent Substances 0.000 claims description 6
- 238000001139 pH measurement Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 239000003463 adsorbent Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 150000001879 copper Chemical class 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 239000012154 double-distilled water Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims 1
- 238000001027 hydrothermal synthesis Methods 0.000 claims 1
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
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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
- B01J20/16—Alumino-silicates
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Inorganic Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention relates to the technical field of environmental protection, in particular to an application method of utilizing waste glass to hydrothermally synthesize analcite as a heavy metal adsorption material in wastewater, which comprises the following steps: s1: a quantitative sample of analcite was weighed on a weighing paper and transferred to a beaker; s2: preparing an application solution containing lead, cadmium and copper ions; s3: placing the beaker on a magnetic stirrer, and stirring and mixing the solution; s4: during the stirring process, using microwave auxiliary equipment; s5: 5mL of supernatant was aspirated using a syringe filter and transferred to a centrifuge tube; s6: measuring the concentration of heavy metal ions in the clear liquid in the centrifuge tube; s7: based on the measurement results, the adsorption rate and adsorption capacity of the analcite to the heavy metal ions were calculated. The invention not only has the capability of efficiently treating heavy metal ions in wastewater, but also realizes the recycling of waste glass and reduces the negative influence of waste on the environment.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to an application method of utilizing waste glass to hydrothermally synthesize analcite as a heavy metal adsorption material in wastewater.
Background
Heavy metal pollution is a serious environmental problem in the fields of wastewater treatment and environmental protection. The existence of heavy metal pollutants poses serious threat to the environment and human health, and is mainly derived from industries such as leather, electroplating, papermaking and the like, wherein lead, cadmium and copper are common heavy metal elements with larger harm, if the heavy metal elements are not treated, the environment is greatly influenced, the harm is generated to human bodies, and the conventional heavy metal ion removal method such as precipitation, ion exchange, membrane filtration and the like has the problems of low treatment efficiency, complex equipment, high operation cost and the like, and in addition, the concentration of certain heavy metal ions such as lead, cadmium, copper and the like in water is usually low, and the lead, cadmium, copper and the like are difficult to effectively remove, so that the wastewater cannot reach the emission standard.
Waste glass is a common waste, a large amount of waste glass has difficult treatment and recovery, and therefore, it is very important to develop a method capable of recycling waste glass and efficiently degrading heavy metal ions in wastewater.
Analcite is a common adsorbent with excellent adsorption performance and selectivity, and is widely applied to the field of wastewater treatment, however, the traditional method for preparing analcite generally needs to use high-temperature and high-pressure conditions, has high cost and is not environment-friendly, and aims at the problems.
The invention provides an application method for utilizing waste glass to hydrothermally synthesize analcite as a heavy metal adsorption material in wastewater, which utilizes waste glass to recycle waste glass resources through a low-cost and environment-friendly preparation process of the waste glass to hydrothermally synthesize analcite, and utilizes good adsorption performance of the analcite to realize efficient adsorption and removal of heavy metal ions such as lead, cadmium, copper and the like in the wastewater, so that the invention has important practical application value for solving important problems in the fields of wastewater treatment and environmental protection.
Disclosure of Invention
Based on the above purpose, the invention provides an application method of utilizing waste glass to hydrothermally synthesize analcite as a heavy metal adsorption material in wastewater.
An application method of utilizing waste glass to hydrothermally synthesize analcite as a heavy metal adsorption material in wastewater comprises the following steps:
s1: accurately weighing a quantitative analcite sample on weighing paper by using an electronic analytical balance, and transferring the quantitative analcite sample into a beaker;
s2: preparing application solutions containing lead, cadmium and copper ions, taking 5-15mL of each of the solutions, and adding the solutions into a beaker filled with analcite;
s3: placing the beaker on a magnetic stirrer, and stirring and mixing the solution;
s4: in the stirring process, microwave auxiliary equipment is used for changing the structure and the electrical property of the surface of the analcite, so that the adsorption efficiency of the analcite is improved;
s5: after stirring and reaction time are respectively 10min, 20min, 30min, 45min, 1h, 3h, 6h and 24h, 5mL of supernatant is sucked by using a syringe filter and is transferred into a centrifuge tube;
s6: measuring the concentration of heavy metal ions in the clear liquid in the centrifuge tube;
s7: based on the measurement results, the adsorption rate and adsorption capacity of the analcite to the heavy metal ions were calculated.
Further, the electronic analytical balance has an accuracy of 0.001g to accurately weigh zeolite samples on weighing paper, the mass of the zeolite samples ranging from 0.05 to 0.15g, and specifically, the humidity of the environment will be controlled to 40% and the temperature to 23 ℃ during the weighing process.
Further, the step of preparing the application solution of the lead, cadmium and copper ions in the S2 comprises the following steps:
s21: lead, cadmium and copper salts with a purity of 99.9% were used;
s22: weighing the selected lead, cadmium and copper metal salts according to the concentration range of 80-120 mg/L;
s23: double distilled water is used as a solvent to ensure that the metal salt is completely dissolved;
s24: complete dissolution of the metal salt is carried out under stirring to ensure consistent concentration;
s25: during the solution preparation, the pH was adjusted in the range of 5.0-6.0.
Further, the specific step of adjusting the pH in S25 includes:
s251: as pH adjusting agent, 5% hydrochloric acid and 5% sodium hydroxide were used;
s252: performing a preliminary pH measurement on the use solution of lead, cadmium and copper ions using a pH meter prior to adding the conditioning reagent;
s253: according to the result of preliminary pH measurement, gradually adding 5% hydrochloric acid or 5% sodium hydroxide, wherein the addition amount of each time is not more than 0.5mL so as to avoid severe pH change;
s254: after the addition of the pH adjusting agent, stirring is continued and the pH is measured in real time until the pH stabilizes within a predetermined range.
Further, the stirring and mixing speed in the step S3 is 200-400rpm/min, and the temperature is controlled within the range of 20-30 ℃.
Further, the step S4 specifically includes:
s41: preheating by microwaves, and preheating the solution in the beaker to 35-45 ℃ by using a microwave oven before starting an adsorption reaction;
s42: the adsorption is assisted by microwaves, after the adsorption reaction is started, the beaker is placed into a microwave oven immediately, and microwave treatment is carried out for 2-5min at the power of 300-500W and the temperature of 35-45 ℃.
Further, the pore size of the syringe filter in the step S5 is 0.22-0.45 micrometers.
Further, the concentration in S6 is measured by inductively coupled plasma mass spectrometry (ICP-MS).
Further, the method for calculating the adsorption rate and the adsorption capacity comprises the following steps:
wherein,
C 0 the concentration of heavy metal ions in the solution before adsorption is mg/L;
c is the concentration of heavy metal ions in the filtrate after adsorption, and the unit is mg/L;
m is the mass of the adsorbent in g;
v is the volume of the solution in mL.
The invention has the beneficial effects that:
according to the invention, the zeolite is hydrothermally synthesized by using the waste glass, so that not only is the high-efficiency removal of heavy metal ions such as lead, cadmium, copper and the like in the waste water realized, but also an environment-friendly and economically feasible recovery way is provided for the waste glass, thus not only reducing the negative influence of the waste glass on the environment, but also relieving the environmental pressure brought by the traditional waste water treatment technology such as precipitation, ion exchange and membrane filtration.
The method avoids the high-temperature and high-pressure conditions required in the traditional method for preparing the analcite, thereby greatly reducing the material and operation cost, and simultaneously, the method can efficiently remove the heavy metal ions such as lead, cadmium, copper and the like in the water under lower concentration due to the excellent adsorption performance and selectivity of the analcite, so that the overall efficiency of wastewater treatment is improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an application method of an adsorption material according to an embodiment of the invention;
FIG. 2 is a schematic SEM image of an analcite of an embodiment of the invention;
FIG. 3 is a graph showing the result of fitting adsorption isotherms of the analcite to heavy metals according to the embodiment of the present invention.
Detailed Description
The present invention will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1-3, an application method of using waste glass to hydrothermally synthesize analcite as a heavy metal adsorption material in wastewater comprises the following steps:
s1: accurately weighing a quantitative analcite sample on weighing paper by using an electronic analytical balance, and transferring the quantitative analcite sample into a beaker;
s2: preparing application solutions containing lead, cadmium and copper ions, taking 10mL of each of these solutions, and adding into a beaker containing analcite;
s3: placing the beaker on a magnetic stirrer, and stirring and mixing the solution;
s4: in the stirring process, microwave auxiliary equipment is used for changing the structure and the electrical property of the surface of the analcite, so that the adsorption efficiency of the analcite is improved;
s5: after stirring and reaction time are respectively 10min, 20min, 30min, 45min, 1h, 3h, 6h and 24h, 5mL of supernatant is sucked by using a syringe filter and is transferred into a centrifuge tube;
s6: measuring the concentration of heavy metal ions in the clear liquid in the centrifuge tube;
s7: based on the measurement results, the adsorption rate and adsorption capacity of the analcite to the heavy metal ions were calculated.
The electronic analytical balance had an accuracy of 0.001g to accurately weigh the zeolite sample on the weighing paper, the mass of the zeolite sample was 0.10g, and specifically, the humidity of the environment was controlled to 40% and the temperature was 23 ℃ during the weighing process.
The preparation steps of the application solution of lead, cadmium and copper ions in S2 comprise:
s21: lead, cadmium and copper salts with a purity of 99.9% were used;
s22: weighing the selected lead, cadmium and copper metal salts according to the concentration of 100 mg/L;
s23: double distilled water is used as a solvent to ensure that the metal salt is completely dissolved;
s24: complete dissolution of the metal salt is carried out under stirring to ensure consistent concentration;
s25: during the solution preparation, the pH was adjusted to 5.5.
The specific step of pH adjustment in S25 comprises:
s251: as pH adjusting agent, 5% hydrochloric acid and 5% sodium hydroxide were used;
s252: performing a preliminary pH measurement on the use solution of lead, cadmium and copper ions using a pH meter prior to adding the conditioning reagent;
s253: according to the result of preliminary pH measurement, gradually adding 5% hydrochloric acid or 5% sodium hydroxide, wherein the addition amount of each time is not more than 0.5mL so as to avoid severe pH change;
s254: after the addition of the pH adjusting agent, stirring is continued and the pH is measured in real time until the pH stabilizes within a predetermined range.
The stirring and mixing speed in S3 is 300rpm/min, and the temperature is controlled within 25 ℃.
S4 specifically comprises the following steps:
s41: preheating by microwaves, and preheating the solution in the beaker to 40 ℃ by using a microwave oven before starting an adsorption reaction;
s42: the adsorption was assisted by microwaves, immediately after the start of the adsorption reaction, the beaker was placed in a microwave oven and subjected to microwave treatment at 400W power and a temperature of 40 ℃ for 3 min.
The syringe filter in S5 had a pore size of 0.35 microns.
The concentration in S6 is measured by inductively coupled plasma mass spectrometry (ICP-MS).
The method for calculating the adsorption rate and the adsorption capacity comprises the following steps:
wherein,
C 0 the concentration of heavy metal ions in the solution before adsorption is mg/L;
c is the concentration of heavy metal ions in the filtrate after adsorption, and the unit is mg/L;
m is the mass of the adsorbent in g;
v is the volume of the solution, and the unit is mL;
in particular, the method comprises the steps of,
lead:
cadmium:
copper:
example 2
The distinguishing embodiment 1 is characterized in that;
s1: accurately weighing 0.05g of analcite sample on weighing paper by using an electronic analytical balance with the precision of 0.001g, controlling the environmental humidity to 40%, and controlling the temperature to 23 ℃;
s2: preparing application solution containing lead, cadmium and copper ions, wherein the concentration of each metal salt is 80mg/L, taking 15mL of the application solution, adding the application solution into a beaker filled with analcite, and regulating the pH value to be 5.0;
s3: placing the beaker on a magnetic stirrer, wherein the stirring speed is 200rpm/min, and the temperature is controlled at 20 ℃;
step S4: preheating to 35 ℃ by using a microwave oven, and then performing microwave treatment for 2min, wherein the power is 300W;
s5: after 30min of reaction, 5mL of supernatant was taken using a syringe filter with a 0.22 micron pore size and transferred to a centrifuge tube;
s6: measuring the concentration of heavy metal ions in the clear liquid by using an inductively coupled plasma mass spectrometer ICP-MS;
s7: based on the measurement results, the adsorption rate and adsorption capacity were calculated, specifically,
lead:
cadmium:
copper:
example 3
The distinguishing embodiment 1 is characterized in that;
s1: accurately weighing 0.15g of analcite sample on weighing paper by using an electronic analytical balance with the precision of 0.001g, controlling the environmental humidity to 40%, and controlling the temperature to 23 ℃;
s2: preparing application solution containing lead, cadmium and copper ions, wherein the concentration of each metal salt is 120mg/L, taking 5mL of the application solution, adding the application solution into a beaker filled with analcite, and regulating the pH value to be 6.0;
s3: placing the beaker on a magnetic stirrer, wherein the stirring speed is 400rpm/min, and the temperature is controlled at 30 ℃;
step S4: preheating to 45 ℃ by using a microwave oven, and then performing microwave treatment for 5min, wherein the power is 500W;
s5: after 30min of reaction, 5mL of supernatant was taken using a syringe filter with a 0.45 micron pore size and transferred to a centrifuge tube;
s6: determining the concentration of heavy metal ions in the clear liquid by using an inductively coupled plasma mass spectrometer (ICP-MS);
s7: based on the measurement results, the adsorption rate and adsorption capacity were calculated, specifically,
lead:
cadmium:
copper:
table 1 comparison of data on adsorption Rate and adsorption Capacity
As can be seen from table 1 above, example 1 has relatively superior performance in terms of adsorption rates of 99.94%, 99.84% and 99.76% for lead, cadmium and copper, respectively; example 2 was highest in adsorption capacity, but because in this example more analcite was used, 0.05g and more solution volume was 15mL, resulting in higher adsorption capacity, but its adsorption rate was relatively low; example 3 was relatively low in adsorption capacity due to different reaction conditions or amount of analcite 0.15g and lower solution volume of 5mL; the best performance of example 1 was determined by considering both the adsorption rate and the adsorption capacity.
The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the scope of the present invention.
Claims (9)
1. An application method for hydrothermally synthesizing analcite by using waste glass as a heavy metal adsorption material in waste water is characterized by comprising the following steps:
s1: accurately weighing a quantitative analcite sample on weighing paper by using an electronic analytical balance, and transferring the quantitative analcite sample into a beaker;
s2: preparing application solutions containing lead, cadmium and copper ions, taking 5-15mL of each of the solutions, and adding the solutions into a beaker filled with analcite;
s3: placing the beaker on a magnetic stirrer, and stirring and mixing the solution;
s4: in the stirring process, microwave auxiliary equipment is used for changing the structure and the electrical property of the surface of the analcite, so that the adsorption efficiency of the analcite is improved;
s5: after stirring and reaction time are respectively 10min, 20min, 30min, 45min, 1h, 3h, 6h and 24h, 5mL of supernatant is sucked by using a syringe filter and is transferred into a centrifuge tube;
s6: measuring the concentration of heavy metal ions in the clear liquid in the centrifuge tube;
s7: based on the measurement results, the adsorption rate and adsorption capacity of the analcite to the heavy metal ions were calculated.
2. The method according to claim 1, wherein the electronic analytical balance has an accuracy of 0.001g for accurately weighing zeolite sample on a weighing paper, the mass of the zeolite sample is 0.05-0.15g, and specifically, the humidity of the environment is controlled to be 40% and the temperature is 23 ℃ during the weighing process.
3. The application method of using the waste glass to hydrothermally synthesize the analcite as the heavy metal adsorption material in the wastewater according to claim 1, wherein the application solution preparation step of the lead, cadmium and copper ions in the S2 comprises the following steps:
s21: lead, cadmium and copper salts with a purity of 99.9% were used;
s22: weighing the selected lead, cadmium and copper metal salts according to the concentration range of 80-120 mg/L;
s23: double distilled water is used as a solvent to ensure that the metal salt is completely dissolved;
s24: complete dissolution of the metal salt is carried out under stirring to ensure consistent concentration;
s25: during the solution preparation, the pH was adjusted in the range of 5.0-6.0.
4. The method for using the waste glass to hydrothermally synthesize the analcite as the heavy metal adsorption material in the wastewater according to claim 3, wherein the specific step of adjusting the pH in the step S25 comprises the following steps:
s251: as pH adjusting agent, 5% hydrochloric acid and 5% sodium hydroxide were used;
s252: performing a preliminary pH measurement on the use solution of lead, cadmium and copper ions using a pH meter prior to adding the conditioning reagent;
s253: according to the result of preliminary pH measurement, gradually adding 5% hydrochloric acid or 5% sodium hydroxide, wherein the addition amount of each time is not more than 0.5mL so as to avoid severe pH change;
s254: after the addition of the pH adjusting agent, stirring is continued and the pH is measured in real time until the pH stabilizes within a predetermined range.
5. The method for using the waste glass to hydrothermally synthesize the analcite as the heavy metal adsorption material in the wastewater according to claim 1, wherein the stirring and mixing rotating speed in the step S3 is 200-400rpm/min, and the temperature is controlled in the range of 20-30 ℃.
6. The application method of using waste glass to hydrothermally synthesize analcite as heavy metal adsorption material in wastewater according to claim 1, wherein the S4 specifically comprises:
s41: preheating by microwaves, and preheating the solution in the beaker to 35-45 ℃ by using a microwave oven before starting an adsorption reaction;
s42: the adsorption is assisted by microwaves, after the adsorption reaction is started, the beaker is placed into a microwave oven immediately, and microwave treatment is carried out for 2-5min at the power of 300-500W and the temperature of 35-45 ℃.
7. The method for using the waste glass to hydrothermally synthesize the analcite as the heavy metal adsorption material in the wastewater according to claim 1, wherein the pore diameter of the syringe filter in the step S5 is 0.22-0.45 μm.
8. The method according to claim 1, wherein the concentration in S6 is measured by inductively coupled plasma mass spectrometry (ICP-MS).
9. The application method of using the waste glass hydro-thermal synthesis of the analcite as the heavy metal adsorption material in the wastewater according to claim 1, wherein the calculation method of the adsorption rate and the adsorption capacity is as follows:
wherein,
C 0 the concentration of heavy metal ions in the solution before adsorption is mg/L;
c is the concentration of heavy metal ions in the filtrate after adsorption, and the unit is mg/L;
m is the mass of the adsorbent in g;
v is the volume of the solution in mL.
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