CN104587967B - Method for synchronously preparing biological adsorbent and flocculant for heavy metal adsorption and products of biological adsorbent and flocculant - Google Patents
Method for synchronously preparing biological adsorbent and flocculant for heavy metal adsorption and products of biological adsorbent and flocculant Download PDFInfo
- Publication number
- CN104587967B CN104587967B CN201410840685.0A CN201410840685A CN104587967B CN 104587967 B CN104587967 B CN 104587967B CN 201410840685 A CN201410840685 A CN 201410840685A CN 104587967 B CN104587967 B CN 104587967B
- Authority
- CN
- China
- Prior art keywords
- flocculant
- heavy metal
- biological
- adsorption
- aluminum sulfate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 35
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 24
- 239000003463 adsorbent Substances 0.000 title abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 13
- 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 10
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 5
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 5
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229960004029 silicic acid Drugs 0.000 claims description 11
- 239000011734 sodium Substances 0.000 claims description 11
- 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 10
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 241000605118 Thiobacillus Species 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 230000001580 bacterial effect Effects 0.000 claims description 7
- 238000005119 centrifugation Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000001963 growth medium Substances 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 229960001866 silicon dioxide Drugs 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- WAKTWVHWRCNIKU-UHFFFAOYSA-N S(=O)(=O)(O)O.[AlH3] Chemical compound S(=O)(=O)(O)O.[AlH3] WAKTWVHWRCNIKU-UHFFFAOYSA-N 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 13
- 241000894006 Bacteria Species 0.000 abstract description 6
- 238000005189 flocculation Methods 0.000 abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 3
- 230000016615 flocculation Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000011282 treatment Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 9
- 239000010949 copper Substances 0.000 description 8
- 238000003786 synthesis reaction Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000008394 flocculating agent Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 3
- -1 aluminum ion Chemical class 0.000 description 3
- 229910001431 copper ion Inorganic materials 0.000 description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 101001136034 Homo sapiens Phosphoribosylformylglycinamidine synthase Proteins 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 150000005857 PFAS Chemical class 0.000 description 1
- 102100036473 Phosphoribosylformylglycinamidine synthase Human genes 0.000 description 1
- 229910020489 SiO3 Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- AMVQGJHFDJVOOB-UHFFFAOYSA-H aluminium sulfate octadecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O AMVQGJHFDJVOOB-UHFFFAOYSA-H 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 231100000045 chemical toxicity Toxicity 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- CYPPCCJJKNISFK-UHFFFAOYSA-J kaolinite Chemical compound [OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[O-][Si](=O)O[Si]([O-])=O CYPPCCJJKNISFK-UHFFFAOYSA-J 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004531 microgranule Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
-
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a method for synchronously preparing a biological adsorbent and a flocculant for heavy metal adsorption and products of the biological adsorbent and the flocculant, and belongs to wastewater treatment technologies. The method comprises the following steps: domesticating iron-oxidizing bacteria by using aluminum sulfate to obtain a target strain; then performing enlarged cultivation and centrifugal collection on the strain to obtain a lot of bacteria; and adding the bacteria into a ferrous sulfate and aluminum sulfate system to synthesize a nano-wire-scale iron-based heavy metal adsorbent and a polysilicate ferro-aluminum sulfate flocculant on the basis of a ferrous oxidation function and a biological template function of the bacteria. The bacterium co-preparation method is simple in process, is environment-friendly, is low in consumption, high in raw material utilization efficiency, and is suitable for adsorption and flocculation treatments of various types of wastewater.
Description
Technical field
The present invention relates to a kind of prepare for the biological adsorption agent of heavy metal adsorption and the method for flocculant and its product simultaneously
Product, belong to field of environment engineering.
Background technology
With the extensive mining of process of industrialization, ore dressing, smelt and following process and utilize process, heavy metal pollution
Increasingly severe, its hazardness also increasingly manifests, thus seek one rationally efficient governance way very urgent.Heavy metal is not
Be same as organic pollution, most organic pollutions can by the physics of nature, chemistry or biological process decompose so as to
Toxicity reduces or eliminates.Heavy metal then can not be degraded, and has enriching on the contrary, and it can be in water body, and bed mud and biology are internal
Accumulation, concentrates in food chain, causes huge environment and biohazardous.Main hazardness heavy metal include lead, cadmium,
Hydrargyrum, arsenic, chromium, copper, nickel, zinc etc..
Flocculant can be made water-borne glue body microgranule and some other had by the effect such as charge neutrality, absorption, bridge formation, crosslinking
Machine material forms floc sedimentation and settles rapidly.The flocculant of high efficiency low cost is the key substance in water process.Flocculant can reduce
Water turbidity and colourity, simultaneously its flocculation process can also remove the heavy metal in water body, Organic substance and some other pollutant.
Two big class can be divided into include organic flocculant and inorganic flocculating agent based on flocculant chemical property.Organic flocculant has consumption concurrently
Little and efficient advantage, but its price is higher, and in water body, residual flocculant is difficult to remove comprehensively, so its potential chemical toxicity
It is not particularly suited for drinking water treatment.Inorganic flocculating agent typically then can be divided into iron salt system and aluminium salt system, and aluminium salt is with aluminum sulfate, chlorination
Based on aluminum, iron salt is based on iron sulfate, iron chloride.
The present invention, based on iron-oxidizing bacterium, based on its excellent ferrum oxidability and biological template effect, closes simultaneously
Become nano wire iron-based heavy-metal adsorption material and Polyferric Sulfate Flocculants aluminum, form a kind of green, efficient synthesis technique.Its
Synthetic product nano-level iron basic weight metal absorbent has adsorption capacity height, and reproducibility is good, and preparation condition is simple, uniformity height etc.
Advantage, the flocculant flocculation ratio that it produces is great, and sedimentation velocity is fast, the advantages of appropriate pH width.Whole antibacterial synthesis technique is gentle,
No coupling product, improves properties of product, reduces cost, is a kind of environment-friendly advanced technologies.
Content of the invention
The purpose of the present invention is for the deficiency in conventional art, provides a kind of life simultaneously prepared for heavy metal adsorption
Method of thing adsorbent and flocculant and products thereof.
The purpose of the present invention is achieved in the following ways：
A kind of preparation method of the biological flocculant for heavy metal adsorption, comprises the following steps：
Add aluminum sulfate in 9K culture medium thiobacillus ferrooxidant is tamed, obtain the oxygen with stable ferrum oxidability
Change ferrous Thiobacillus bacterial strain；Bacterial strain is added to synthesis in ferrous sulfate and the solution system of aluminum sulfate, precipitation is collected by filtration, washes
Wash precipitation, be dried, obtain biological adsorption agent, filtrate is mixed standing and obtains flocculant with polymeric silicicacid sodium.
Sulphuric acid aluminum concentration is gradually stepped up until reaching 30g/L with domestication process in said method.
Initial pH 2.0-2.5 when taming in said method, temperature 25-35 DEG C, shaking speed 100-250rpm.
In said method, the mass ratio of ferrous sulfate and aluminum sulfate is 15/1-15/30, bacterial density 1.0-1.5 × 108
Individual/mL,
In above-mentioned building-up process, initial pH 2.0-2.5, temperature 25-36 DEG C, rotating speed 150-250rpm, generated time is 3-
5 days.The precipitation collected pH 1.5-2.5 deionized water wash precipitates, and natural air drying obtains biological adsorption agent.
5/1-1/5 compounds by volume for above-mentioned filtrate and 2% polymeric silicicacid sodium.
Make its mix homogeneously after compounding in said method, adjust pH value to 1.2-1.8, stir 10-20min, at 50-65 DEG C
100-150min is reacted, period is uniformly vibrated, and standing obtains brownish red flocculant in water-bath.
The preparation process of polymeric silicicacid sodium：Weigh sodium silicate so that silicon dioxide SiO2Concentration is 1.5-2.5%, initially
PH is 12.5-13.0, is then slowly added dropwise 5-10% sulphuric acid while stirring in solution, adjusts polymeric silicicacid sodium pH to 2.0-
2.5, stand 60-120min under 25-35 DEG C of environment.
A kind of biological adsorption agent for heavy metal adsorption, is to be prepared from by above-mentioned method.
A kind of biological flocculant for heavy metal adsorption, is that method from the above mentioned is prepared from.
The advantage of the present invention is as follows：
The invention provides a kind of method of biological adsorption agent that can simultaneously prepare for heavy metal adsorption and flocculant,
And the nano-level iron basic weight metal-adsorbing material pattern obtaining, size, structure has high level of homogeneity, has larger ratio table
Area, heavy metal adsorption is strong, also has excellent recyclability.By-product bodied ferric sulfate in its production process simultaneously
By a kind of excellent polymeric aluminum sulfate silicate ferric flocculant can be obtained with the modification of active polysilicon acid.Whole building-up process green, environmental protection,
Process is simple, raw material can achieve complete utilization, significantly reduces production cost.
Brief description：
Fig. 1 is the nano-level iron basic weight metal-adsorbing material SEM figure of synthesis in the present invention；
The nano-level iron basic weight metal-adsorbing material TEM figure of synthesis in Fig. 2 present invention；
Fig. 3 is the nano-level iron basic weight metal-adsorbing material EDS figure of synthesis in the present invention；
Fig. 4 is the ferric sulfate of polymerized silica aluminium flocculating agent of synthesis in the present invention；
Fig. 5 is the circulation absorption to 250mg/L chromium and copper for the nano-level iron basic weight metal-adsorbing material synthesizing in the present invention
Performance；
Fig. 6 is that the nano-level iron basic weight metal-adsorbing material of synthesis in the present invention is right under different anions and variable concentrations
The kinetics model of biosorption of 250mg/L Cu (II).
Specific embodiment
Following examples or embodiment are intended to further illustrate the present invention, rather than limitation of the invention.
Embodiment 1：
(1) High-concentrated aluminum ion to thiobacillus ferrooxidant domestication：Al is added in 200mL 9K culture medium2
(SO4)3.18H2O, its concentration increases to 15g, 22.5g, 30g successively from initial 7.5g, passes on 3 times in 30g concentration, initially
PH2.0,30 DEG C of temperature, shaking speed 180rpm, final acquisition has stabilizing ferrous oxygen in the case of High-concentrated aluminum ion exists
The thiobacillus ferrooxidant bacterial strain of change ability；
(2) thiobacillus ferrooxidant amplification culture：The thiobacillus ferrooxidant that step (1) domestication is obtained, shakes by 500
Bottle is being added with 30g Al2(SO4)3.18H2Amplification culture in the 9K culture medium of O, enters algebraically growth latter stage (about 5 in its propagation
My god) when pass through 0.45um filter paper filtering, remove precipitation, obtain filtrate, High speed refrigerated centrifuge 12,000 is collected by centrifugation thalline.
(3) thalline collecting step (2), is added to FeSO4.7H2O and Al2(SO4)3.18H2O ratio is 15g：30g's
So as to cell density reaches 1.5 × 10 in 200mL pure water solution system8/ mL, the initial pH of synthetic system are 2.5,30 DEG C of temperature,
Rotating speed 180rpm, generated time is 4 days, and precipitation is collected by filtration, and is precipitated with pH 1.5-2.5 deionized water wash, natural wind
Dry, the PFAS filtrate obtaining is saved backup；
(4) the nano-level iron basic weight metal-adsorbing material that 0.05g step (3) obtains is added to 20mL 1-500mg/L's
Cu (II), Zn (II), Cd (II), Pb (II), are adsorbed in the waste liquid of As (III) and Cr (VI), 30 DEG C of adsorption temp, initially
PH is 3-8, and rotating speed is 180rpm, and adsorption time is 180min, and the waste liquid after process and adsorbent are by 3000rpm centrifugation point
From；
(5) step (4) is circulated washing 20-30min, the heavy metal that it is adsorbed with the pure water of 3-5mL pH 2-3
Ion carries out eluting so as to obtain regeneration, recycles more than four times.
Embodiment 2
1st, the preparation of polymeric silicicacid sodium：Weigh the Na of 4.73g2SiO3·9H2O sodium silicate be dissolved in 50mL distilled water so that
Silicon dioxide SiO2Concentration is 2%, and now its initial pH is 12.5-13.0, is then slowly added dropwise in solution while stirring
10% sulphuric acid, adjusts polymeric silicicacid sodium pH to 2.0, stands 90min under 30 DEG C of environment.
2nd, by the PAFS filtrate described in step (3) in embodiment 1 iron-based heavy-metal adsorption material preparation process
Press 1 with polymeric silicicacid sodium:1 compounds so as to mix homogeneously, adjusts pH value to 1.5, stirs 30min, react in 60 DEG C of water-baths
120min, period uniformly vibrates 60 beats/min, and standing obtains brownish red ferric sulfate of polymerized silica aluminium flocculating agent.
3rd, take 100uL, 200uL, 500uL, 800uL, 1mL composite flocculation agent adds to 100mL, in 5% kaolinite soil suspension,
250rpm quickly stirs 1min, is then adjusted to 75rpm stirring 1min, finally stands 4min, sample, in 540nm under liquid level 2cm
Detection absorbance.
Conclusion：0.1/100,0.2/100,0.5/100,0.8/100,1/100 ratio dosage flocculating rate reaches successively
85.2%, 89.3%, 92.6%, 94.3%, 94.1%.
Embodiment 3
1st, take man-made lake lake water 400mL, its water body is in light green color, 20 DEG C of water temperature, pH 6.83, COD 412mg/L, Xiang Qi
Middle interpolation copper sulfate makes its copper ion concentration reach 100mg/L, is configured to the high-COD waste water of heavy metal pollution.
2nd, add the 1 of 2mL embodiment 2 preparation in simulated wastewater:The 1g absorption of 1 built-up flocculant and embodiment 1 preparation
Agent, 200rpm stirs 2min, stands 5min, samples, measure copper ion by microplate reader dense at 600nm at 2cm under liquid level
Degree, measures COD content by TOC analyzer.
Conclusion：After process, lake water copper ion concentration is 12.3mg/L, and COD content is reduced to 62.77mg/L.
Embodiment 4
1st, the nano-level iron basic weight metal-adsorbing material that 0.05g embodiment 1 is obtained is added separately to 20mL 250mg/L
Cu (II), adsorbed in the waste liquid of Cr (VI), initial pH 7,30 DEG C of temperature, rotating speed is 180rpm, and adsorption time is
180min, adsorbent passes through 3000rpm centrifugation；
2nd, the adsorbent being collected by centrifugation is carried out zeolite regeneration using the deionized water of 10mL pH 2, elution time is
30min, carries out heavy metal adsorption, cycle-index 5 times with same above-mentioned steps after eluting again；
Conclusion：Sorbent circulation performance is as shown in Figure 5.
Embodiment 5
1st, the nano-level iron basic weight metal-adsorbing material that 0.05g embodiment 1 is obtained is added separately to 20mL 250mg/L
Cu (II) solion in adsorbed, its back-ground electolyte be respectively 0.2 and 0.01M NaNO3, NaCl and Na2SO4,
Sample successively during absorption 1,3,7,9,15,30,60,180min, adsorb initial pH 7,30 DEG C of temperature, rotating speed is 180rpm, absorption
3000rpm centrifugation is passed through in agent；
2nd, different time sampling sample is passed through Atomic Absorption Spectrometry Cu (II) ion concentration；
Conclusion：Adsorption dynamics adsorption kinetics under different anions concentration are as shown in Figure 6.
Sulfate ion can promote Cu (II) ionic adsorption, accelerates adsorption equilibrium, the impact of nitrate anion and chloride ion is not
Substantially.0.2NaNO3、0.01NaNO3、0.2NaCl、0.01NaCl、0.2Na2SO4、0.01Na2SO4Pseudo-second order kinetic matching
Degree is respectively 0.9398,0.97825,0.90061,0.95027,0.96403,0.99465, and its speed constant respectively reaches
1.20675、2.58727、1.30399、1.88193、3.47818、1.48926g mg-1min-1.
Claims (10)
1. a kind of prepare for the biological adsorption agent of heavy metal adsorption and the method for flocculant simultaneously it is characterised in that include with
Lower step：
Add aluminum sulfate in 9K culture medium thiobacillus ferrooxidant is tamed, filter, remove precipitation, obtain filtrate and be collected by centrifugation
Obtain the thiobacillus ferrooxidant bacterial strain with stable ferrum oxidability；Bacterial strain is added to the solution of ferrous sulfate and aluminum sulfate
Synthesize in system, precipitation, washing precipitation are collected by filtration, are dried, obtain biological adsorption agent, filtrate mixes standing with polymeric silicicacid sodium
Obtain flocculant.
2. method according to claim 1 is it is characterised in that gradually step up sulphuric acid aluminum concentration until reaching with domestication process
30g/L.
3. method according to claim 1 it is characterised in that domestication when initial pH 2.0-2.5, temperature 25-35 DEG C, shake
Bed rotating speed 100-250rpm.
4. method according to claim 1 is it is characterised in that the mass ratio of ferrous sulfate and aluminum sulfate is 15/1-15/
30, bacterial density 1.0-1.5 × 108Individual/mL.
5. method according to claim 1 is it is characterised in that in building-up process, initial pH 2.0-2.5, temperature 25-36
DEG C, rotating speed 150-250rpm, generated time is 3-5 days；The precipitation collected pH 1.5-2.5 deionized water wash precipitates, natural
Air-dry, obtain biological adsorption agent.
6. method according to claim 1 it is characterised in that filtrate and 2% polymeric silicicacid sodium 5/1-1/5 is multiple by volume
Join.
7. method according to claim 6 is it is characterised in that make its mix homogeneously after compounding, adjusts pH value to 1.2-
1.8, stir 10-20min, 50-65 DEG C of water-bath reacts 100-150min, period is uniformly vibrated, and standing obtains brownish red
Flocculant.
8. method according to claim 6 is it is characterised in that the preparation process of polymeric silicicacid sodium：Weigh sodium silicate so that
Silicon dioxide SiO2Concentration is 1.5-2.5%, and initial pH is 12.5-13.0, is then slowly added dropwise 5- in solution while stirring
10% sulphuric acid, adjusts polymeric silicicacid sodium pH to 2.0-2.5, stands 60-120min under 25-35 DEG C of environment.
9. a kind of biological adsorption agent for heavy metal adsorption is it is characterised in that be the side described in any one of claim 1-5
Method is prepared from.
10. a kind of biological flocculant for heavy metal adsorption is it is characterised in that be described in any one of claim 1-8
Method is prepared from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410840685.0A CN104587967B (en) | 2014-12-30 | 2014-12-30 | Method for synchronously preparing biological adsorbent and flocculant for heavy metal adsorption and products of biological adsorbent and flocculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410840685.0A CN104587967B (en) | 2014-12-30 | 2014-12-30 | Method for synchronously preparing biological adsorbent and flocculant for heavy metal adsorption and products of biological adsorbent and flocculant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104587967A CN104587967A (en) | 2015-05-06 |
| CN104587967B true CN104587967B (en) | 2017-02-22 |
Family
ID=53114222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410840685.0A Active CN104587967B (en) | 2014-12-30 | 2014-12-30 | Method for synchronously preparing biological adsorbent and flocculant for heavy metal adsorption and products of biological adsorbent and flocculant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104587967B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107022503A (en) * | 2016-12-12 | 2017-08-08 | 东华理工大学 | The preparation method of high-performance bio flocculant and its application in washed-out sand wastewater treatment |
| CN112661197B (en) * | 2020-12-24 | 2021-12-07 | 成都湛蓝未来环保科技有限公司 | Device and method for preparing polymeric ferric sulfate through microbial catalysis |
| CN114105373A (en) * | 2022-01-26 | 2022-03-01 | 邢台永恒能源管理有限公司 | Novel inorganic adsorption medium culture liquid dung treatment process and system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58187192A (en) * | 1982-04-23 | 1983-11-01 | Dowa Mining Co Ltd | Preparation of raw material for red iron oxide by utilizing iron-oxidizing bacterium |
| JP5053909B2 (en) * | 2008-04-02 | 2012-10-24 | 水澤化学工業株式会社 | Method of treating sulfate solution |
| CN101428929B (en) * | 2008-12-09 | 2010-08-25 | 中南大学 | Method for direct advanced treatment for heavy metal wastewater with biological agent |
| CN101974566B (en) * | 2010-10-30 | 2013-03-20 | 中南大学 | Method for preparing and using polymeric flocculant polyferric silicate sulfate |
| CN102557208A (en) * | 2011-03-10 | 2012-07-11 | 中国环境科学研究院 | Method for preparing poly aluminum ferric silicate composite flocculating agent by using red mud and ferrous sulfate |
| CN102167417B (en) * | 2011-03-18 | 2013-01-30 | 南京工业大学 | Method for treating heavy metal waste water by utilizing polylysine to produce waste mycelia |
| CN103274507A (en) * | 2013-05-17 | 2013-09-04 | 中南大学 | Biological flocculant for processing fluorine and calcium in wastewater and preparation and application methods thereof |
-
2014
- 2014-12-30 CN CN201410840685.0A patent/CN104587967B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104587967A (en) | 2015-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jiang et al. | The effect of magnetic nanoparticles on Microcystis aeruginosa removal by a composite coagulant | |
| Matheickal et al. | Biosorption of cadmium (II) from aqueous solutions by pre-treated biomass of marine alga Durvillaea potatorum | |
| Singh et al. | Removal of cadmium from aqueous solutions by adsorption using poly (acrylamide) modified guar gum–silica nanocomposites | |
| Bayramoglu et al. | Uranium sorption by native and nitrilotriacetate-modified Bangia atropurpurea biomass: kinetics and thermodynamics | |
| Podder et al. | SD/MnFe2O4 composite, a biosorbent for As (III) and As (V) removal from wastewater: Optimization and isotherm study | |
| Jiang et al. | Removal and recovery of phosphate from water by a magnetic Fe3O4@ ASC adsorbent | |
| Kim et al. | Removal of heavy metals from aqueous solution using a novel composite of recycled materials | |
| Lakshmanan et al. | Microemulsion prepared magnetic nanoparticles for phosphate removal: Time efficient studies | |
| Jiang et al. | Removal and recovery of phosphate from water by calcium-silicate composites-novel adsorbents made from waste glass and shells | |
| CN103071461B (en) | The preparation of xanthogenation loess adsorbent and application in the treatment of waste water | |
| Ebrahimi et al. | Modification of green algae harvested from the Persian Gulf by L-cysteine for enhancing copper adsorption from wastewater: Experimental data | |
| Bidhendi et al. | Removal of lead ions from wastewater using magnesium sulfide nanoparticles caged alginate microbeads | |
| Abbasi et al. | Facile fabrication of leaf coral-like structured Cu-Al LDH/PVDF composite adsorptive membrane with enhanced adsorption performance | |
| CN104587967B (en) | Method for synchronously preparing biological adsorbent and flocculant for heavy metal adsorption and products of biological adsorbent and flocculant | |
| CN109126748B (en) | Composite material PEI-CS-KIT-6 based on inorganic silicon source, preparation method thereof and application thereof in lead removal | |
| Kuang et al. | Enhancement mechanisms of copper (II) adsorption onto kaolinite by extracellular polymeric substances of Microcystis aeruginosa (cyanobacterium) | |
| Cheng et al. | The adsorption of Rhodamine B in water by modified zeolites | |
| Tan et al. | Synthesis of novel algal extracellular polymeric substances (EPS)-based hydrogels for the efficient removal and recovery of phosphorus from contaminated waters: development, characterisation, and performance | |
| CN105771912A (en) | Multifunctional biological adsorbent and preparation method thereof | |
| CN111704248A (en) | Method for treating arsenic-containing wastewater or arsenic-polluted soil by using autotrophic bacteria | |
| Tripathy et al. | Selective lead (II) adsorption and flocculation characteristics of the grafted sodium alginate: a comparative study | |
| Rastkari et al. | Synthesis and characterization of tetraethylene pentamine functionalized MIL-101 (Cr) for removal of metals from water | |
| Wang et al. | Dynamics and treatability of heavy metals in pig farm effluent wastewater by using UiO-66 and UiO-66-NH 2 nanomaterials as adsorbents | |
| Dremicheva | Studying the sorption kinetics on peat ions of iron (III) and copper (II) from wastewater | |
| Zhadra et al. | Analysis of Cr (III) ions adsorption on the surface of algae: implications for the removal of heavy metal ions from water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240325 Address after: 413000 Ziyang Avenue, Changchun Economic Development Zone, Ziyang District, Yiyang City, Hunan Province Patentee after: Hunan Kaiqing Environmental Protection Technology Co.,Ltd. Country or region after: China Address before: Yuelu District City, Hunan province 410083 Changsha Lushan Road No. 932 Patentee before: CENTRAL SOUTH University Country or region before: China |