CN107376829A - A kind of preparation method for carrying iron powder coal ash arsenic-removing adsorption agent - Google Patents
A kind of preparation method for carrying iron powder coal ash arsenic-removing adsorption agent Download PDFInfo
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- CN107376829A CN107376829A CN201710749573.8A CN201710749573A CN107376829A CN 107376829 A CN107376829 A CN 107376829A CN 201710749573 A CN201710749573 A CN 201710749573A CN 107376829 A CN107376829 A CN 107376829A
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- flyash
- arsenic
- coal ash
- iron powder
- powder coal
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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
- B01J20/02—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
- B01J20/06—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
- B01J20/08—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 comprising aluminium oxide or hydroxide; comprising bauxite
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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
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
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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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
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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
- B01J2220/42—Materials comprising a mixture of inorganic materials
-
- 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
- C02F2101/103—Arsenic compounds
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of preparation method for carrying iron powder coal ash arsenic-removing adsorption agent, step are：1) the cleaning removal of impurities of 45g 60g flyash is taken, it is stand-by that 80 120 mesh sieves are crossed after drying；2) 3 6mol/L NaOH solution and 0.1 2mol/L FeCl are prepared3Solution；3) 250 300ml NaOH solution is added to flyash, is stirred 35 hours in 40 80 DEG C of waters bath with thermostatic control, neutrality is washed to after taking-up；4) ball-milling treatment：Washing is added to neutral flyash, 20 50ml of addition FeCl to ball mill3Solution, the 5h of mixed grinding 1, make flyash landfill in modifying agent；5) mixture 380 450 DEG C of 4 6h of calcining in Muffle furnace；80 120 mesh sieves are crossed, obtain carrying iron powder coal ash.The present invention completes the modification to flyash, and its process operation is simple, and mild condition is easy to control, and yield is high；It is notable to the adsorption effect of the heavy metal in water to carry iron powder coal ash, adsorption efficiency is high, the problem of efficiently solving arsenic pollution in water；It is cheap with cost, beneficial to environment, it is easy to industrialization, industrialized production, for the remarkable advantage of the excellent adsorption of arsenic in water.
Description
Technical field
The invention belongs to water-treatment technology field, carries iron powder coal ash more particularly, to one kind and prepares adsorbent to go to remove water
The application process of middle arsenic.
Background technology
Arsenic is a kind of plasm poisonous substance, can be by (making protein and enzyme with the sulfydryl interaction above enzyme and albumen
It is denatured in the cell) and increase reactive oxygen species to cause cellular damage to produce toxicity, there is extensive biological effect.Arsenic
The three-induced effect such as the toxic action to human body, including acute poisoning, slow poisoning, also mutagenesis, teratogenesis shape, carcinogenesis.People
If body drinks the underground water of high-content arsenic for a long time, arsenic can constantly be accumulated in human body, cause malaise, nausea, Yi Jipi
The slow poisoning symptom such as skin lesion and keratinization.Research finds that human body drinks the high water of arsenic content for a long time, may result in lymph
The symptom of Chromosome aberration.
The content of the invention
Precisely in order to overcoming existing underground water, situation of some containing arsenic carries the purpose of the present invention because of various complicated reasons
For a kind of preparation method and application for carrying iron powder coal ash arsenic-removing adsorption agent, the present invention is using trade waste flyash as raw material, profit
A kind of new load iron powder coal ash, which is prepared, by the use of sodium hydroxide and iron chloride is used as the adsorbent of arsenic removal in water, modifying process condition temperature
With pollution-free, easy to control, yield height.Load iron fly ash absorbent cost is cheap, environment-friendly, adsorption capacity is big, use condition
Extensively, it is easy to industrialization and industrialization production.
Flyash is a kind of solid waste of coal-fired power plant's discharge.Flyash main component is silica, oxidation
Chlorine, calcium oxide etc., particle are in porous type cellular tissue more, have the characteristics of particle diameter is small, porous and specific surface area is big, flyash
Containing substantial amounts of reactivity site, there is preferable absorption property for heavy metal in water, therefore be the Optimality material of absorption
Material.
The technical scheme is that：A kind of preparation method for carrying iron powder coal ash arsenic-removing adsorption agent, step are：
1) the cleaning removal of impurities of 45g-60g flyash is taken, it is stand-by that 80-120 mesh sieves are crossed after drying；
2) 3-6mol/L NaOH solution and 0.1-2mol/L FeCl are prepared3Solution；
3) 250-300ml NaOH solution is added to flyash, 3-5 hours are stirred in 40-80 DEG C of water bath with thermostatic control, after taking-up
It is washed to neutrality；
4) ball-milling treatment：Washing is added to ball mill and arrives neutral flyash, adds 20-50ml FeCl3Solution, mixing
1-5h is ground, makes flyash landfill in modifying agent；
5) mixture 380-450 DEG C of calcining 4-6h in Muffle furnace；80-120 mesh sieves are crossed, obtain carrying iron powder coal ash.
Load iron powder coal ash arsenic-removing adsorption agent provided by the invention, has the following advantages that：
1st, arsenic-removing adsorption agent provided by the invention, cost is cheap, using flyash, iron chloride, sodium hydroxide as raw material,
It is common cheap material.
2nd, arsenic-removing adsorption agent provided by the invention, acid resistance is strong, still has very strong absorption in the environment of slant acidity
Performance, adsorbent adsorption capacity of the invention are 35-40mg/g.
3rd, arsenic-removing adsorption agent provided by the invention, renewable is strong, with 0.1mol/L's after the completion of adsorbent absorption
NaOH solution parses, then adsorbs adsorption capacity and be basically unchanged.
4th, arsenic-removing adsorption agent provided by the invention, the rate of adsorption is fast, and can reaches one close to saturation in 10 minutes
Adsorbance.
5th, arsenic-removing adsorption agent provided by the invention, preparation process mild condition are easy to operate.
6th, arsenic-removing adsorption agent provided by the invention, raw material are industrial waste gas thing flyash, and cost is cheap, environment-friendly, are inhaled
Attached effect is good, has both solved the Utilizing question of trade waste flyash, the pollution problem for solving heavy metal in waste water again.
The chemical composition of the flyash of table 1
Brief description of the drawings
Fig. 1 is influence of the adsorption time to absorption property；
Fig. 2 is influences of the pH to absorption property；
Fig. 3 is influence of the initial concentration to absorption property.
Embodiment
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Institute
It is conventional method unless otherwise instructed to state method.The reactant can obtain from public commercial sources unless otherwise instructed.
Embodiment 1
Experimental rig platform is built, flyash is cleaned into removal of impurities with deionized water, 100 mesh sieves are crossed after drying, weigh 50 fine coal
Ash, 250ml concentration are 3mol/L NaOH solution, and 40 DEG C of waters bath with thermostatic control are stirred 3 hours, and neutrality is washed to after taking-up；To at alkali
The FeCl that 20ml concentration is 0.1mol/L is added dropwise in the flyash of reason3Solution, under the conditions of 80 DEG C stirring fill out flyash to dry pureed
It is embedded in modifying agent.Mixture is dried at 80 DEG C of temperature；80 mesh sieves are crossed after drying, obtain carrying iron powder coal ash.
Na is used in laboratory3AsO4Arsenic-containing waste water is prepared, is 4g/L for 20ppm arsenic-containing waste water adsorbents dosage, vibration
2h is adsorbed, is filtered with filter needle tubing, adsorption equilibrium concentration is obtained with atomic fluorescence spectrophotometer after dilution several times step by step, changes
Property after flyash be 93.4% to the adsorption rate of arsenic.
Embodiment 2
Experimental rig platform is built, flyash is cleaned into removal of impurities with deionized water, 120 mesh sieves are crossed after drying, weigh 45g fine coal
Ash, 250ml concentration are 4mol/L NaOH solution, and 50 DEG C of waters bath with thermostatic control are stirred 3 hours, and neutrality is washed to after taking-up；To at alkali
The FeCl that 20ml concentration is 0.5mol/L is added dropwise in the flyash of reason3Solution, under the conditions of 80 DEG C stirring fill out flyash to dry pureed
It is embedded in modifying agent；Mixture is dried at 80 DEG C of temperature；100 mesh sieves are crossed after drying, obtain carrying iron powder coal ash；
Na is used in laboratory3AsO4Arsenic-containing waste water is prepared, is 4g/L for 20ppm arsenic-containing waste water adsorbents dosage, vibration
2h is adsorbed, is filtered with filter needle tubing, adsorption equilibrium concentration is obtained with atomic fluorescence spectrophotometer after dilution several times step by step, changes
Property after flyash be 95.3% to the adsorption rate of arsenic.
Embodiment 3
Experimental rig platform is built, flyash is cleaned into removal of impurities with deionized water, 80 mesh sieves are crossed after drying, weigh 60g fine coal
Ash, 250ml concentration are 4mol/L NaOH solution, and 60 DEG C of waters bath with thermostatic control are stirred 3 hours, and neutrality is washed to after taking-up；To at alkali
The FeCl that 30ml concentration is 1mol/L is added dropwise in the flyash of reason3Solution, under the conditions of 80 DEG C stirring fill flyash to dry pureed
In modifying agent.Mixture is dried at 80 DEG C of temperature；120 mesh sieves are crossed after drying, obtain carrying iron powder coal ash.
Na is used in laboratory3AsO4Arsenic-containing waste water is prepared, is 4g/L for 20ppm arsenic-containing waste water adsorbents dosage, vibration
2h is adsorbed, is filtered with filter needle tubing, adsorption equilibrium concentration is obtained with atomic fluorescence spectrophotometer after dilution several times step by step, changes
Property after flyash be 94.1% to the adsorption rate of arsenic.
Embodiment 4
Experimental rig platform is built, flyash is cleaned into removal of impurities with deionized water, 100 mesh sieves are crossed after drying, weigh 50g fine coal
Ash, 250ml concentration are 5mol/L NaOH solution, and 60 DEG C of waters bath with thermostatic control are stirred 3 hours, and neutrality is washed to after taking-up；To at alkali
The FeCl that 20ml concentration is 2mol/L is added dropwise in the flyash of reason3Solution, under the conditions of 80 DEG C stirring fill flyash to dry pureed
In modifying agent.Mixture is dried at 80 DEG C of temperature；100 mesh sieves are crossed after drying, obtain carrying iron powder coal ash.
Na is used in laboratory3AsO4Arsenic-containing waste water is prepared, is 4g/L for 20ppm arsenic-containing waste water adsorbents dosage, vibration
2h is adsorbed, is filtered with filter needle tubing, adsorption equilibrium concentration is obtained with atomic fluorescence spectrophotometer after dilution several times step by step, changes
Property after flyash be 95.2% to the adsorption rate of arsenic.
Claims (1)
1. a kind of preparation method for carrying iron powder coal ash arsenic-removing adsorption agent, the invention is characterised in that, step is：
1) the cleaning removal of impurities of 45g-60g flyash is taken, it is stand-by that 80-120 mesh sieves are crossed after drying；
2) 3-6mol/L NaOH solution and 0.1-2mol/L FeCl are prepared3Solution；
3) 250-300ml NaOH solution is added to flyash, 3-5 hours is stirred in 40-80 DEG C of water bath with thermostatic control, is washed after taking-up
To neutrality；
4) ball-milling treatment：Washing is added to ball mill and arrives neutral flyash, adds 20-50ml FeCl3Solution, mixed grinding
1-5h, make flyash landfill in modifying agent；
5) mixture 380-450 DEG C of calcining 4-6h in Muffle furnace；80-120 mesh sieves are crossed, obtain carrying iron powder coal ash.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710749573.8A CN107376829A (en) | 2017-08-28 | 2017-08-28 | A kind of preparation method for carrying iron powder coal ash arsenic-removing adsorption agent |
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| CN201710749573.8A CN107376829A (en) | 2017-08-28 | 2017-08-28 | A kind of preparation method for carrying iron powder coal ash arsenic-removing adsorption agent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890772A (en) * | 2017-11-29 | 2018-04-10 | 安徽工业大学 | A kind of adsorption tower and its arsenic removing method for flue gas dearsenification |
| CN107913680A (en) * | 2017-11-29 | 2018-04-17 | 安徽工业大学 | A kind of preparation method of flue gas dearsenification adsorbent |
| CN110605093A (en) * | 2019-09-05 | 2019-12-24 | 北京工业大学 | Method for efficiently recycling various wastes |
| CN113332952A (en) * | 2021-08-04 | 2021-09-03 | 大唐环境产业集团股份有限公司 | Modified fly ash adsorbent and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179704A (en) * | 1983-03-30 | 1984-10-12 | Tokuyama Soda Co Ltd | Granular slag softening agent and its manufacture |
| CN102350313A (en) * | 2011-08-30 | 2012-02-15 | 郑州航空工业管理学院 | Preparation method and application of copper and ferrous magnetic metal oxide modified fly ash phosphorus adsorbent |
| CN103357379A (en) * | 2013-08-14 | 2013-10-23 | 山东建筑大学 | Method for preparing arsenic removal adsorbent from water plants |
| CN106345398A (en) * | 2016-09-12 | 2017-01-25 | 武汉工程大学 | Preparation method of modified coal ash adsorbent |
| CN106622104A (en) * | 2016-10-14 | 2017-05-10 | 安徽理工大学 | Method for treating heavy metal ion-containing wastewater by using high-iron fly ash |
-
2017
- 2017-08-28 CN CN201710749573.8A patent/CN107376829A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179704A (en) * | 1983-03-30 | 1984-10-12 | Tokuyama Soda Co Ltd | Granular slag softening agent and its manufacture |
| CN102350313A (en) * | 2011-08-30 | 2012-02-15 | 郑州航空工业管理学院 | Preparation method and application of copper and ferrous magnetic metal oxide modified fly ash phosphorus adsorbent |
| CN103357379A (en) * | 2013-08-14 | 2013-10-23 | 山东建筑大学 | Method for preparing arsenic removal adsorbent from water plants |
| CN106345398A (en) * | 2016-09-12 | 2017-01-25 | 武汉工程大学 | Preparation method of modified coal ash adsorbent |
| CN106622104A (en) * | 2016-10-14 | 2017-05-10 | 安徽理工大学 | Method for treating heavy metal ion-containing wastewater by using high-iron fly ash |
Non-Patent Citations (1)
| Title |
|---|
| 陈云嫩等: ""改性粉煤灰处理低浓度含砷含氨氮废水"", 《广州化工》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890772A (en) * | 2017-11-29 | 2018-04-10 | 安徽工业大学 | A kind of adsorption tower and its arsenic removing method for flue gas dearsenification |
| CN107913680A (en) * | 2017-11-29 | 2018-04-17 | 安徽工业大学 | A kind of preparation method of flue gas dearsenification adsorbent |
| CN107913680B (en) * | 2017-11-29 | 2020-09-04 | 安徽工业大学 | Preparation method of flue gas dearsenic adsorbent |
| CN110605093A (en) * | 2019-09-05 | 2019-12-24 | 北京工业大学 | Method for efficiently recycling various wastes |
| CN110605093B (en) * | 2019-09-05 | 2022-03-08 | 北京工业大学 | Method for efficiently recycling various wastes |
| CN113332952A (en) * | 2021-08-04 | 2021-09-03 | 大唐环境产业集团股份有限公司 | Modified fly ash adsorbent and preparation method and application thereof |
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