CN104355374A - Sodium arsenic alunite solid solution and preparation method thereof and application of preparation method - Google Patents
Sodium arsenic alunite solid solution and preparation method thereof and application of preparation method Download PDFInfo
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- CN104355374A CN104355374A CN201410514528.0A CN201410514528A CN104355374A CN 104355374 A CN104355374 A CN 104355374A CN 201410514528 A CN201410514528 A CN 201410514528A CN 104355374 A CN104355374 A CN 104355374A
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- arsenic
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- natroalunite
- sosoloid
- sodium
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- 238000002360 preparation method Methods 0.000 title claims abstract description 40
- 229910052934 alunite Inorganic materials 0.000 title abstract 4
- 239000010424 alunite Substances 0.000 title abstract 4
- WWDVNHHGXKIDDD-UHFFFAOYSA-N lambda1-arsanylsodium Chemical compound [Na].[As] WWDVNHHGXKIDDD-UHFFFAOYSA-N 0.000 title abstract 4
- 239000006104 solid solution Substances 0.000 title abstract 4
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 title abstract 4
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 92
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000011734 sodium Substances 0.000 claims abstract description 21
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 20
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 20
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 20
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 16
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims abstract description 11
- 229910001811 natroalunite Inorganic materials 0.000 claims description 62
- 239000000243 solution Substances 0.000 claims description 36
- 238000003756 stirring Methods 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000007787 solid Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 25
- 239000003643 water by type Substances 0.000 claims description 20
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 16
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 14
- 239000002243 precursor Substances 0.000 claims description 14
- 239000012153 distilled water Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 13
- 229920001187 thermosetting polymer Polymers 0.000 claims description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical class [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 150000001495 arsenic compounds Chemical class 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 229910052600 sulfate mineral Inorganic materials 0.000 abstract description 3
- 229940093920 gynecological arsenic compound Drugs 0.000 abstract 2
- MHUWZNTUIIFHAS-XPWSMXQVSA-N 9-octadecenoic acid 1-[(phosphonoxy)methyl]-1,2-ethanediyl ester Chemical compound CCCCCCCC\C=C\CCCCCCCC(=O)OCC(COP(O)(O)=O)OC(=O)CCCCCCC\C=C\CCCCCCCC MHUWZNTUIIFHAS-XPWSMXQVSA-N 0.000 abstract 1
- 229940047047 sodium arsenate Drugs 0.000 abstract 1
- 238000002386 leaching Methods 0.000 description 12
- 238000011056 performance test Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- DJHGAFSJWGLOIV-UHFFFAOYSA-N Arsenic acid Chemical class O[As](O)(O)=O DJHGAFSJWGLOIV-UHFFFAOYSA-N 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- -1 Tricalcium arsenate salt compound Chemical class 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical compound [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229940000489 arsenate Drugs 0.000 description 1
- 229940000488 arsenic acid Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003171 wood protecting agent Substances 0.000 description 1
Classifications
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention relates to a preparation method of sulfate mineral, application of the preparation method and a prepared product, in particular to a preparation method of a sodium arsenic alunite solid solution, application of the preparation method to control of arsenic pollution and the prepared sodium arsenic alunite solid solution, and belongs to the technical field of environmental protection. According to the preparation method, aluminum sulfate (or aluminum nitrate), sodium sulfate and sodium arsenate are taken as an Al source, a Na source and an As source, and the sodium arsenic alunite solid solution with high crystallinity and good stability is prepared through hydrothermal synthesis for 2-72h at 100-200 DEG C. The preparation method is mainly used for converting pentavalent arsenic compounds in a dissolved state in water into dissoluble precipitation compounds so as to solve an environment pollution problem caused by poor stability of the arsenic compounds; compared with the conventional technology, the preparation method has the advantages as follows: the obtained precipitation compounds are good in long-term stability and safe and reliable during stacking storage.
Description
Technical field
The present invention relates to a kind of preparation method and its usage of sulfate mineral and prepared product, be specifically related to a kind of preparation method of arsenic natroalunite sosoloid and administering the purposes in arsenic pollution, and prepared arsenic natroalunite sosoloid, belong to environmental technology field.
Background technology
Arsenic belongs to metalloid or the semimetallic elements of close sulphur, mainly exists with the form of sulfide, sulfoarsenide, arsenide and arsenate in natural mineral, composes and is stored in non-ferrous metal deposit, with associated minerals output.Along with non-ferrous metal deposit adopt, select, the enrichment gradually of smelting link, be distributed in different forms again in process of production in waste water, waste residue and flue gas, the final arsenic-containing waste residue forming arsenic content and do not wait; In addition, arsenic product is related to, as using and the discarded diffusion that also can cause arsenic compound containing arsenic agricultural chemicals, wood preservative, alloy material etc.; If these arsenic-containing materials process, mishandling, will ecological environmental pollution be caused.
Field is polluted at improvement arsenic, lime precipitation or lime-iron salt method are considered to a kind of effective dearsenicating method all the time, but, along with the difference of precipitation agent input amount, the type of gained arsenate compounds but changes, the arsenic leaching concentration of dissimilar arsenate compounds has very big-difference, and arsenic leaching concentration is all comparatively large, and minimum also reaches 2.5 ~ 10mg/L; In addition, prior art adopts the form preparing Tricalcium arsenate salt compound to carry out arsenic removal usually, but, large quantifier elimination shows that Tricalcium arsenate salt compound long-term exposure is in air, calcium carbonate and arsenic acid can be changed into the carbon dioxide reaction in air, this reaction causes arsenic to drench because of carbonization, easily cause secondary pollution to environment.
Have significant deficiency and environmental pollution hidden danger in view of with lime or lime-iron salt method arsenic removal, therefore, safety and stability of employing new technology arsenic removal has been trend of the times.
Natroalunite is the common sulfate mineral of nature, and its chemical formula is NaAl
3(SO
4)
2(OH)
6, wherein, Na
+position can also be K
+, H
3o
+, Ca
2+, Ba
2+, Pb
2+, Sr
2+, Bi
3+deng, Al
3+position can be Fe
3+, Cr
3+, V
3+, SO
4 2-can by CrO
4 2-, PO
4 3-, AsO
4 3-deng complex anion aliquot replacement; Because each site isomorph in natroalunite structure is replaced, scope is wide and its environmental stability is good, so, the invention provides one utilizes natroalunite mineral to remove arsenic element, the method of final formation arsenic natroalunite sosoloid, and the method is at the purposes of administering in arsenic pollution and prepared arsenic natroalunite sosoloid, finally realizes the stabilization treatment of arsenic.
Summary of the invention
A kind of preparation method of arsenic natroalunite sosoloid is provided, it is Al source, Na source and As source with Tai-Ace S 150 (or aluminum nitrate), sodium sulfate and sodium arseniate respectively, by being changed into by the pentavalent arsenic in dissolved state in water, degree of crystallinity is high, the insoluble compound precipitates one arsenic natroalunite sosoloid of good stability, and this insoluble compound precipitates also has the advantages such as arsenic leaching concentration is low, to solve the problem of environmental pollution that arsenic compound poor stability causes.
The preparation method of described a kind of arsenic natroalunite sosoloid, when taking Tai-Ace S 150 as aluminium source, by weight, under agitation, the sodium arseniate getting 0 ~ 30 part adds in the beaker that 50 parts of deionized waters are housed, preparation arsenic solution; Equally under agitation, by weight, get 5 ~ 240 parts of Tai-Ace S 150 and 1 ~ 28 part of solid sodium sulfate, and join in the beaker that 100 parts of deionized waters are housed simultaneously, preparation natroalunite precursor solution; Then be added drop-wise to by described arsenic solution while stirring in described natroalunite precursor solution, the initial pH value of regulator solution in mixing process, makes system initial pH value in 2.80 ~ 3.00 scopes; After abundant stirring, mixed solution is poured in hydrothermal reaction kettle, at 100 ~ 200 DEG C, react 2 ~ 72h, after reaction terminates, obtain arsenic natroalunite sosoloid through aftertreatment.
The preparation method of described arsenic natroalunite sosoloid, when taking aluminum nitrate as aluminium source, by weight, 7 ~ 300 parts of aluminum nitrates, 8 ~ 60 parts of sodium sulfate and 0 ~ 30 part of sodium arseniate solid are directly joined in the beaker that 150 parts of deionized waters are housed, be stirred to dissolving, and in mixing process the initial pH value of regulator solution, make the initial pH value of system maintain in 2.80 ~ 3.00 scopes; After being fully uniformly mixed, mixed solution is poured in hydrothermal reaction kettle, at 100 ~ 200 DEG C, react 2 ~ 72h, after reaction terminates, obtain arsenic natroalunite sosoloid through aftertreatment.
Preferably, described whipping process carries out at room temperature 20 ~ 25 DEG C, and stirring velocity is 150 ~ 750rpm, and churning time is 30 ~ 120min.
Preferably, during the initial pH value of regulator solution, pH value regulator used is the H of 1M
2sO
4or the NaOH solution of 1M.
Preferably, described last handling process is: carry out solid-liquid separation by after thermosetting liquid chilling, by gained solid distilled water wash 3 ~ 5 times, and finally under room temperature environment dry 3 ~ 7 days.
Invention also provides a kind of preparation method of arsenic natroalunite sosoloid administering the purposes in arsenic pollution, it is characterized in that, utilizes natroalunite mineral to remove arsenic element, finally forms arsenic natroalunite sosoloid, realizes the stabilization treatment of arsenic.
Invention also provides the sosoloid of the arsenic natroalunite prepared by a kind of preparation method utilizing arsenic natroalunite sosoloid.
Beneficial effect:
The present invention is Al source, Na source and As source with Tai-Ace S 150 (or aluminum nitrate), sodium sulfate and sodium arseniate respectively, and carry out Hydrothermal Synthesis by controlling Tai-Ace S 150 (or aluminum nitrate), sodium sulfate and sodium arseniate weight ratio, finally obtain that degree of crystallinity is high, the arsenic natroalunite sosoloid of good stability, thus change the pentavalent arsenic in dissolved state in water the removing of into insoluble compound precipitates.Compared with conventional art, gained insoluble compound precipitates is stored up more stable, safe and reliable for a long time, thus solves the pollution problems such as arsenic leaching concentration is large, with carbon dioxide reaction, long-term exposure causes that arsenic drenches in air.
Accompanying drawing explanation
Fig. 1 is natroalunite standard diagram, and obtained arsenic natroalunite sosoloid X-ray diffraction (XRD) spectrogram of embodiment 1,3,6 and 8 ~ 10.
Fig. 2 is that embodiment 6 obtains arsenic natroalunite sosoloid scanning electron microscope (SEM) photo.
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is further elaborated.
Embodiment 1:
Under stirring at room temperature condition, 5g Tai-Ace S 150 and 0.14g sodium sulfate are joined in the beaker that 150 parts of water are housed simultaneously, mix and blend 90min, pour hydrothermal reaction kettle into, at 100 DEG C, react 72h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain high-crystallinity without arsenic natroalunite.
Embodiment 2:
Under stirring at room temperature condition, 5g Tai-Ace S 150 and 0.14g sodium sulfate are joined in the beaker that 150 parts of water are housed simultaneously, mix and blend 90min, pour hydrothermal reaction kettle into, at 200 DEG C, react 2h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain high-crystallinity without arsenic natroalunite.
Embodiment 3:
Under stirring at room temperature condition, in the beaker that 50 parts of deionized waters are housed, add the sodium arseniate solid of 1.21g, preparation arsenic solution; Same under stirring at room temperature condition, in the beaker that 100 parts of deionized waters are housed, add 5g Tai-Ace S 150 and 0.14g solid sodium sulfate, preparation natroalunite precursor solution simultaneously; Be added drop-wise to by arsenic solution while stirring in natroalunite precursor solution, mixing process adopts 1M H
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 90min, pour hydrothermal reaction kettle into, at 100 DEG C, react 72h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 1mg/L.
Embodiment 4:
Under stirring at room temperature condition, in the beaker that 50 parts of deionized waters are housed, add the sodium arseniate solid of 1.21g, preparation arsenic solution; Same under stirring at room temperature condition, in the beaker that 100 parts of deionized waters are housed, add 5g Tai-Ace S 150 and 0.14g solid sodium sulfate, preparation natroalunite precursor solution simultaneously; Be added drop-wise to by arsenic solution while stirring in natroalunite precursor solution, mixing process adopts 1M H
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 90min, pour in hydrothermal reaction kettle, at 180 DEG C, react 2h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 0.5mg/L.
Embodiment 5:
Under stirring at room temperature condition, in the beaker that 50 parts of deionized waters are housed, add the sodium arseniate solid of 2.01g, preparation arsenic solution; Same under stirring at room temperature condition, in the beaker that 100 parts of deionized waters are housed, add 10g Tai-Ace S 150 and 1.4g solid sodium sulfate, preparation natroalunite precursor solution simultaneously; Be added drop-wise to by arsenic solution while stirring in natroalunite precursor solution, mixing process adopts 1M H
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 90min, pour in hydrothermal reaction kettle, at 200 DEG C, react 2h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 0.5mg/L.
Embodiment 6:
Under stirring at room temperature condition, in the beaker that 50 parts of deionized waters are housed, add the sodium arseniate solid of 3.03g, preparation arsenic solution; Same under stirring at room temperature condition, in the beaker that 100 parts of deionized waters are housed, add 10g Tai-Ace S 150 and 1.4g solid sodium sulfate, preparation natroalunite precursor solution simultaneously; Be added drop-wise to by arsenic solution while stirring in natroalunite precursor solution, mixing process adopts 1M H
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 90min, pour in hydrothermal reaction kettle, at 200 DEG C, react 2h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 0.5mg/L.
Embodiment 7:
Under stirring at room temperature condition, in the beaker that 50 parts of deionized waters are housed, add the sodium arseniate solid of 3.03g, preparation arsenic solution; Same under stirring at room temperature condition, in the beaker that 100 parts of deionized waters are housed, add 24g Tai-Ace S 150 and 2.8g solid sodium sulfate, preparation natroalunite precursor solution simultaneously; Be added drop-wise to by arsenic solution while stirring in natroalunite precursor solution, mixing process adopts 1M H
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 90min, pour in hydrothermal reaction kettle, at 200 DEG C, react 2h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 0.5mg/L.
Embodiment 8:
Under stirring at room temperature condition, in the beaker that 150 parts of deionized waters are housed, add 7.2g aluminum nitrate, 1.8g sodium sulfate, mixing process adopts 1M H simultaneously
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 45min, pour in hydrothermal reaction kettle, at 200 DEG C, react 4h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain high-crystallinity without arsenic natroalunite sosoloid.
Embodiment 9:
Under stirring at room temperature condition, in the beaker that 150 parts of deionized waters are housed, add 7.2g aluminum nitrate, 1.8g sodium sulfate and 0.8g sodium arseniate, mixing process adopts 1M H simultaneously
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 45min, pour in hydrothermal reaction kettle, at 200 DEG C, react 4h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 0.5mg/L.
Embodiment 10:
Under stirring at room temperature condition, in the beaker that 150 parts of deionized waters are housed, add 7.2g aluminum nitrate, 1.5g sodium sulfate and 2.6g sodium arseniate, mixing process adopts 1M H simultaneously
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 45min, pour in hydrothermal reaction kettle, at 200 DEG C, react 4h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 0.5mg/L.
Embodiment 11:
Under stirring at room temperature condition, in the beaker that 150 parts of deionized waters are housed, add 30g aluminum nitrate, 6g sodium sulfate and 2.6g sodium arseniate, mixing process adopts 1M H simultaneously
2sO
4or 1M NaOH regulates the initial pH value of reaction system, the initial pH value of reaction system is made to maintain in 2.8 ~ 2.99 scopes, after abundant stirring 45min, pour in hydrothermal reaction kettle, at 200 DEG C, react 4h, after reaction terminates, thermosetting liquid chilling is carried out solid-liquid separation, by isolated solid distilled water wash 5 times, finally under room temperature environment dry 5 days, obtain the arsenic natroalunite sosoloid of high-crystallinity.
Performance test: leach 3 months continuously, arsenic leaching concentration 0.1 ~ 0.5mg/L.
The above is only the preferred embodiment of the present invention, is not limited to the present invention; To those skilled in the art, every any amendment done without departing from the spirit and concept in the present invention, equivalent replacement, improvement etc., all within protection scope of the present invention.
Claims (8)
1. a preparation method for arsenic natroalunite sosoloid, is characterized in that, described method is Al source, Na source and As source with Tai-Ace S 150 (or aluminum nitrate), sodium sulfate and sodium arseniate respectively, carries out Hydrothermal Synthesis, finally carry out aftertreatment after mixing.
2. the preparation method of arsenic natroalunite sosoloid according to claim 1, is characterized in that, when taking Tai-Ace S 150 as aluminium source, by weight, under agitation, the sodium arseniate getting 0 ~ 30 part joins in the beaker that 50 parts of deionized waters are housed, preparation arsenic solution; Equally under agitation, by weight, get 5 ~ 240 parts of Tai-Ace S 150 and 1 ~ 28 part of solid sodium sulfate, and join in the beaker that 100 parts of deionized waters are housed simultaneously, preparation natroalunite precursor solution; Then be added drop-wise to by described arsenic solution while stirring in described natroalunite precursor solution, the initial pH value of regulator solution in mixing process, makes system initial pH value in 2.80 ~ 3.00 scopes; After abundant stirring, mixed solution is poured in hydrothermal reaction kettle, at 100 ~ 200 DEG C, react 2 ~ 72h, after reaction terminates, obtain arsenic natroalunite sosoloid through aftertreatment.
3. the preparation method of arsenic natroalunite sosoloid according to claim 1, it is characterized in that, when taking aluminum nitrate as aluminium source, by weight, 7 ~ 300 parts of aluminum nitrates, 8 ~ 60 parts of sodium sulfate and 0 ~ 30 part of sodium arseniate solid are directly joined in the beaker that 150 parts of deionized waters are housed, be stirred to dissolving, and in mixing process the initial pH value of regulator solution, make the initial pH value of system maintain in 2.80 ~ 3.00 scopes; After being fully uniformly mixed, mixed solution is poured in hydrothermal reaction kettle, at 100 ~ 200 DEG C, react 2 ~ 72h, after reaction terminates, obtain arsenic natroalunite sosoloid through aftertreatment.
4. the preparation method of the arsenic natroalunite sosoloid described in Claims 2 or 3, is characterized in that, described whipping process carries out at room temperature 20 ~ 25 DEG C, and stirring velocity is 150 ~ 750rpm, and churning time is 30 ~ 120min.
5. the preparation method of the arsenic natroalunite sosoloid described in Claims 2 or 3, is characterized in that, during the initial pH value of regulator solution, pH value regulator used is the H of 1M
2sO
4or the NaOH solution of 1M.
6. the preparation method of the arsenic natroalunite sosoloid described in Claims 2 or 3, it is characterized in that, described last handling process is: carry out solid-liquid separation by after thermosetting liquid chilling, by gained solid distilled water wash 3 ~ 5 times, and finally under room temperature environment dry 3 ~ 7 days.
7. the preparation method of arsenic natroalunite sosoloid according to claim 1 is administering the purposes in arsenic pollution, it is characterized in that, utilizes natroalunite mineral to remove arsenic element, and final formation arsenic natroalunite sosoloid, realizes the stabilization treatment of arsenic.
8. utilize the arsenic natroalunite sosoloid prepared by preparation method of the arsenic natroalunite sosoloid described in claim 1.
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Cited By (4)
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| CN105036731A (en) * | 2015-07-20 | 2015-11-11 | 昆明理工大学 | Low-temperature solid-phase method for synthesis of arsenic natroalunite |
| CN106115880A (en) * | 2016-07-01 | 2016-11-16 | 昆明理工大学 | The preparation method of a kind of hydroxyl arsenic ferrous phosphate solid solution and the method application |
| CN108751255A (en) * | 2018-06-26 | 2018-11-06 | 桂林理工大学 | A kind of method and its application of hydrothermal synthesis arsenic natroalunite mixed crystal solid solution |
| CN110790294A (en) * | 2019-11-22 | 2020-02-14 | 华南理工大学 | NaAl3(SO4)2(OH)6Super-hydrophilic film and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036731A (en) * | 2015-07-20 | 2015-11-11 | 昆明理工大学 | Low-temperature solid-phase method for synthesis of arsenic natroalunite |
| CN106115880A (en) * | 2016-07-01 | 2016-11-16 | 昆明理工大学 | The preparation method of a kind of hydroxyl arsenic ferrous phosphate solid solution and the method application |
| CN106115880B (en) * | 2016-07-01 | 2019-07-16 | 昆明理工大学 | A kind of preparation method and this method application of hydroxyl arsenic ferrous phosphate solid solution |
| CN108751255A (en) * | 2018-06-26 | 2018-11-06 | 桂林理工大学 | A kind of method and its application of hydrothermal synthesis arsenic natroalunite mixed crystal solid solution |
| CN110790294A (en) * | 2019-11-22 | 2020-02-14 | 华南理工大学 | NaAl3(SO4)2(OH)6Super-hydrophilic film and preparation method thereof |
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