CN102941060A - Manganese oxide and infusorial earth composite adsorbent for treating lead-containing wastewater and preparation method - Google Patents
Manganese oxide and infusorial earth composite adsorbent for treating lead-containing wastewater and preparation method Download PDFInfo
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- CN102941060A CN102941060A CN2012104914883A CN201210491488A CN102941060A CN 102941060 A CN102941060 A CN 102941060A CN 2012104914883 A CN2012104914883 A CN 2012104914883A CN 201210491488 A CN201210491488 A CN 201210491488A CN 102941060 A CN102941060 A CN 102941060A
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- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 title claims abstract description 86
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000002351 wastewater Substances 0.000 title claims abstract description 17
- 239000003463 adsorbent Substances 0.000 title abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 4
- 239000008103 glucose Substances 0.000 claims description 4
- 229920000858 Cyclodextrin Polymers 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- 229930006000 Sucrose Natural products 0.000 claims description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 150000002500 ions Chemical class 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract 2
- 239000012286 potassium permanganate Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 19
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 12
- 239000011148 porous material Substances 0.000 description 11
- 238000001179 sorption measurement Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000002086 nanomaterial Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- -1 plumbum ion Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 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
- 238000003763 carbonization Methods 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 150000004985 diamines Chemical class 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
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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Abstract
The invention belongs to the technical field of composite materials, and particularly relates to a manganese oxide and infusorial earth composite adsorbent for treating lead-containing wastewater and a preparation method. The composite adsorbent comprises, in weight percent, 5-40% of manganese oxide and 60-95% of infusorial earth. The preparation method of the composite adsorbent includes the steps: dispersing the infusorial earth into soluble low-chain organic solution; stirring and filtering the solution; calcining the solution at the temperature of 400-800 DEG C; adding a calcined product into potassium permanganate solution and performing microwave heating for 5-60 minutes; and filtering, collecting, washing and drying the product after microwave heating to obtain the manganese oxide and infusorial earth composite adsorbent. By the aid of the manganese oxide and infusorial earth composite adsorbent prepared by the method, lead ions in wastewater can be effectively removed, and more than 98% of 60mg/L of lead solution can be adsorbed for 1 hour.
Description
Technical field
The invention belongs to technical field of composite materials, be specifically related to a kind of manganese oxide composite absorption agent of diatomite and preparation method for the treatment of lead waste water.
Background technology
Lead is to use more a kind of toxic heavy metal in the industry, in the industries such as plating, metallurgy, chemical industry, produce a large amount of lead waste water, if it is not treated and directly it is discharged in the natural environment, plumbous meeting enrichment in water body or corresponding organism also finally enter human body through food chain, causes very large toxic action.The technological means of eliminating industrial discharge Pb In Exhausted Water ion is more, comprises ion-exchange, chemical precipitation, embrane method, electrolysis and absorption etc.Wherein absorption method is one of most effectual way of processing dirty heavy metal ions in wastewater pollution, that the characteristics of the method are is simple to operate, the heavy metal recoverable, generally can not produce secondary pollution, is generally suitable for the dirty waste water system that treating capacity is large, concentration of heavy metal ion is lower.The principle of land pollutant is that inorganic material with high-specific surface area is as adsorbent in the Handling Waste Water by Absorbing Way, by the mechanism such as physical absorption, chemisorbed or ion-exchange with the ionic adsorption of the various forms of lead at adsorbent surface, thereby with the land pollutant enrichment and remove, the key of this technology be to use specific area high, with the strong material of lead ion active force as adsorbent.
At present, the adsorbent that is used for the land pollutant removal mainly contains natural porous mineral material, artificial synthesizing inorganic nano material and organic material three major types, comprises diatomite, zeolite, bentonite, volcanic ash, active carbon, nano-titanium oxide, aluminium oxide, manganese oxide, iron oxide and polyphenyl diamines etc.For the porous natural minerals, because the suction-operated of lead ion is often not strong in its surface and the water, removal ability to land pollutant is general, often need further to improve adsorption capacity at the finishing functional molecular, on the other hand, manually the particle diameter of synthetic sorbing material is often less, is positioned at nanoscale, purpose is to improve the adsorbent specific area in order to pass through to reduce size, thereby more lead ion adsorption site is provided.Paper once disclosed a kind of preparation method (Su, Q., Pan, B., Wan, S., Zhang, W. ， ﹠amp of nano hydrated manganese oxide; Lv, L. (2010). Use of hydrous manganese dioxide as a potential sorbent for selective removal of lead, cadmium, and zinc ions from water.
Journal of colloid and interface science349 (2), 607 – 12. doi:10.1016/j.jcis.2010.05.052), although this nano material has higher removal ability to lead ion, but because nano material has the reunion tendency that is difficult to overcome, in actual application, be easy to reduce its result of use.
A kind of method of the solution nano adsorber agglomeration traits of widely accepting and using is that nano adsorber and natural porous material is compound, application number is that 200610008135.8 Chinese patent " a kind of preparation of iron-managanese compounded oxide/diatomite adsorbant, use and renovation process " discloses and adds diatomite in the preparation solution of ferro manganese composite oxides and shook 30-60 minute, then through ageing, washing, dryly obtain the arsenic contamination thing that composite material adsorbent is used for water and process; Application number is that 200810025795.6 Chinese patent " is used for removing water Cr
6+The preparation method of nano magnetite/diatomite composition " disclose diatomite powder added in the iron salt solutions; the pH value of then controlling reaction solution generates iron oxide to have obtained to be used for Adsorption water with the adsorbent of hexavalent chromium in diatomaceous duct; the core of this technology is to introduce natural porous material in the process of preparation nano adsorber; the synthetic preparation condition of control makes nano material forming core and growth in the duct of porous material; and nano adsorber can't be reunited; yet, because the porous material as matrix does not participate in reaction, the mechanism of nano adsorber forming core growth inside and outside the porous material duct is equal to, further, because reaction medium spreads difficulty in the porous material duct, can cause more material directly in the outside formation of the hole of porous material external structure, this part material still faces the adsorption efficiency decline that agglomeration traits is brought in application process.Thereby, need a kind of new material preparation method of R and D badly, both can be modified with on porous natural material surface the reunion that can avoid preparing the function nano material fully.
Summary of the invention
Problem for the prior art existence, the invention provides a kind of manganese oxide composite absorption agent of diatomite and preparation method for the treatment of lead waste water, purpose is that the method by reaction in-situ generates the manganese oxide material that one deck can be used as sorbing material at the diatomite surface uniform, removes quickly and efficiently the lead in the lead waste water.
A kind of manganese oxide composite absorption agent of diatomite for the treatment of lead waste water, its composition are 5-40% manganese oxide and 60-95% diatomite by mass percentage.
A kind of preparation method of the manganese oxide composite absorption agent of diatomite for the treatment of lead waste water carries out according to following steps:
(1) diatomite is distributed in the low chain organic solution of solubility of mass concentration 2～30wt%, diatomaceous addition is the 200-300g/L organic solution, stirred 5 minutes-5 hours, then filter, the solids drying that obtains is placed in vacuum or the nitrogen atmosphere stove, in 400-800 ° of C calcining 30 minutes～5 hours;
(2) calcined product was joined in the liquor potassic permanganate that concentration is 20～100 g/L microwave heating treatment 5～60 minutes, the addition of calcined product is 10～75 g/L liquor potassic permanganates, and microwave power is controlled at 500 W～4kW, and the reaction of generation is:
(3) product after microwave thermal is processed is filtered collection, obtain the manganese oxide composite absorption agent of diatomite after washing and the oven dry.
The low chain organic matter of described solubility is glucose, soluble starch, sucrose or cyclodextrin.
Compared with prior art, characteristics of the present invention and beneficial effect are:
Utilizing at present the oxide-based nanomaterial modified diatomite to prepare all needs in the adsorbents for lead ion pyrolytic technology diatomite is soaked in the reaction solution that generates oxide-based nanomaterial, nano-oxide is at a certain temperature by solubility supersaturation forming core and grow up, diatomite material itself does not participate in reaction, thereby resulting nano-oxide not only is distributed in the diatomaceous pore passage structure, and generation also arranged outside pore passage structure, these nano particles often occur easily to reunite and cause the hydraulic performance decline of compound adsorbent.In addition, because nano-oxide can not be combined closely in the surface of diatomite pore passage structure, even this part oxide particle also is difficult to after the heavy metal ion such as Adsorption of Lead by effective separation, cause easily secondary pollution, and in technical solution of the present invention, because the larger surface tension of hydrone, the organic matters such as glucose in drying and carbonisation at the uniform carbon coating of diatomite Surface Creation, the nano manganese oxide particle by consume this layer carbon and generated and when carbon during by full consumption reaction stop.Thereby the whole strong bonded of manganese oxide nano particle that generate do not have independent manganese oxide nano particle in composite on diatomite pore structure surface, efficiently solve nano material because the little agglomeration that causes of size and reclaim difficulty.
The manganese oxide composite absorption agent of diatomite that adopts the inventive method to prepare can effectively be removed the lead ion in the dirty waste water, and absorption in 1 hour can be adsorbed the lead solution of 60 mg/L more than 98%.
Description of drawings
Fig. 1 is the low power scanning electron microscope diagram of the manganese oxide composite absorption agent of diatomite of the embodiment of the invention 1 preparation;
Fig. 2 is the low power scanning electron microscope diagram of the manganese oxide composite absorption agent of diatomite of the embodiment of the invention 1 preparation;
Fig. 3 is the EDX elementary analysis power spectrum of the manganese oxide composite absorption agent of diatomite of the embodiment of the invention 1 preparation;
Fig. 4 is that the manganese oxide composite absorption agent of diatomite of the embodiment of the invention 1 preparation is to the curve of adsorption kinetics of initial concentration 60 mg/L lead ion solution;
Fig. 5 is that the manganese oxide composite absorption agent of diatomite of the embodiment of the invention 2 preparations is to the curve of adsorption kinetics of initial concentration 80 mg/L lead ion solution;
Fig. 6 is that the compound absorption of manganese oxide diatomite of the embodiment of the invention 3 preparations is to the absorption isotherm of lead at different concentrations solion.
The specific embodiment
The diatomite that adopts in the embodiment of the invention originates from vain area of Jilin governor;
ESEM model to manganese oxide composite absorption agent of diatomite surface observation and EDX energy spectrum analysis use is the JSM-6510A of NEC.
Embodiment 1
(1) 20 g diatomite is distributed in the glucose solution of 100ml mass concentration 5%, stirred 30 minutes, then filter, with the solids that obtains in 120 ° of C baking ovens dry 5 hours, place the nitrogen atmosphere stove, in 600 ° of C calcinings 2 hours;
(2) calcined product was joined in the liquor potassic permanganate that concentration is 60 g/L microwave heating treatment 15 minutes, the addition of calcined product is 35 g/L liquor potassic permanganates, and microwave power is controlled at 1kW;
(3) product after microwave thermal is processed is filtered collection, obtaining composition after washing and the oven dry is 5% manganese oxide and 95% diatomaceous manganese oxide composite absorption agent of diatomite by mass percentage.
Its low power and high power ESEM pattern respectively as depicted in figs. 1 and 2, can find out that oxide is evenly distributed in diatomite the duct on, the element distribution that characterizes with EDX can find out that Si, O and Mn element are present in the adsorbent as shown in Figure 3.
The manganese oxide composite absorption agent of diatomite for preparing in the 0.1 g present embodiment is invested in the lead ion solution that 100 ml initial concentrations are 60 mg/L, its curve of adsorption kinetics as shown in Figure 4, can find out: through 10 minutes absorption, plumbum ion concentration is reduced to 10.7 mg/L in the solution, and clearance is 82%; Through absorption in 60 minutes, plumbum ion concentration was reduced to 0.79 mg/L in the solution, and clearance is 98.7%.
(1) 25g diatomite is distributed in the soluble starch solution of 100ml mass concentration 2%, stirred 5 minutes, then filter, with the solids that obtains in 120 ° of C baking ovens dry 5 hours, place vacuum drying oven, in 400 ° of C calcinings 5 hours;
(2) calcined product was joined in the liquor potassic permanganate that concentration is 100 g/L microwave heating treatment 5 minutes, the addition of calcined product is the 10g/L liquor potassic permanganate, and microwave power is controlled at 4k W;
(3) product after microwave thermal is processed is filtered collection, obtaining composition after washing and the oven dry is 20% manganese oxide and 80% diatomaceous manganese oxide composite absorption agent of diatomite by mass percentage.
Injected volume take 1.5 g/L is invested in initial concentration in the lead ion solution of 80 mg/L with the manganese oxide composite absorption agent of diatomite for preparing in the present embodiment, its curve of adsorption kinetics can be found out, As time goes on as shown in Figure 5, plumbum ion concentration significantly descends, and is effectively adsorbed.
Embodiment 3
(1) 30g diatomite is distributed in the sucrose solution of 100ml mass concentration 10%, stirred 2 hours, then filter, with the solids that obtains in 120 ° of C baking ovens dry 5 hours, place the nitrogen atmosphere stove, in 800 ° of C calcinings 30 minutes;
(2) calcined product was joined in the liquor potassic permanganate that concentration is 50 g/L microwave heating treatment 60 minutes, the addition of calcined product is 75 g/L liquor potassic permanganates, and microwave power is controlled at 500 W;
(3) product after microwave thermal is processed is filtered collection, obtaining composition after washing and the oven dry is 40% manganese oxide and 60% diatomaceous manganese oxide composite absorption agent of diatomite by mass percentage.
Injected volume with 1 g/L is invested in the manganese oxide composite absorption agent of diatomite for preparing in the present embodiment in the lead ion solution of different initial concentrations, it can find out that lead ion almost all is adsorbed to the absorption isotherm of lead at different concentrations solion as shown in Figure 6.
Embodiment 4
(1) 30g diatomite is distributed in the cyclodextrin solution of 100ml mass concentration 30%, stirred 5 hours, then filter, with the solids that obtains in 120 ° of C baking ovens dry 5 hours, place the nitrogen atmosphere stove, in 700 ° of C calcinings 1 hour;
(2) calcined product was joined in the liquor potassic permanganate that concentration is 20 g/L microwave heating treatment 8 minutes, the addition of calcined product is 50 g/L liquor potassic permanganates, and microwave power is controlled at 2kW;
(3) product after microwave thermal is processed is filtered collection, obtaining composition after washing and the oven dry is 35% manganese oxide and 65% diatomaceous manganese oxide composite absorption agent of diatomite by mass percentage.
Claims (3)
1. the manganese oxide composite absorption agent of diatomite for the treatment of lead waste water is characterized in that composition is 5-40% manganese oxide and 60-95% diatomite by mass percentage.
2. preparation method for the treatment of the manganese oxide composite absorption agent of diatomite of lead waste water is characterized in that carrying out according to following steps:
(1) diatomite is distributed in the low chain organic solution of solubility of mass concentration 2～30wt%, diatomaceous addition is the 200-300g/L organic solution, stirred 5 minutes-5 hours, then filter, the solids drying that obtains is placed in vacuum or the nitrogen atmosphere stove, in 400-800 ° of C calcining 30 minutes～5 hours;
(2) calcined product was joined in the liquor potassic permanganate that concentration is 20～100 g/L microwave heating treatment 5～60 minutes, the addition of calcined product is 10～75 g/L liquor potassic permanganates, and microwave power is controlled at 500 W～4kW;
(3) product after microwave thermal is processed is filtered collection, obtain composition after washing and the oven dry and be by mass percentage 5-40% manganese oxide and the diatomaceous manganese oxide composite absorption agent of diatomite of 60-95%.
3. the preparation method of a kind of manganese oxide composite absorption agent of diatomite for the treatment of lead waste water according to claim 2 is characterized in that the low chain organic matter of described solubility is glucose, soluble starch, sucrose or cyclodextrin.
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| CN109499524A (en) * | 2018-11-28 | 2019-03-22 | 北京工业大学 | A kind of AlOOH/MnO2The preparation method of@diatomite composite material |
| US11063265B2 (en) | 2012-07-18 | 2021-07-13 | Printed Energy Pty Ltd | Diatomaceous energy storage devices |
| US11066306B2 (en) | 2012-07-18 | 2021-07-20 | Printed Energy Pty Ltd | Diatomaceous energy storage devices |
| US11502311B2 (en) | 2012-10-10 | 2022-11-15 | Printed Energy Pty Ltd | Printed energy storage device |
| CN116889857A (en) * | 2023-07-11 | 2023-10-17 | 四川农业大学 | Film gradient diffusion method for in-situ selective monitoring lead effective state |
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