CN1268551C - Method for preparing waste water processing materials of organic-inorganic composite bentonite - Google Patents
Method for preparing waste water processing materials of organic-inorganic composite bentonite Download PDFInfo
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- CN1268551C CN1268551C CN 200410018109 CN200410018109A CN1268551C CN 1268551 C CN1268551 C CN 1268551C CN 200410018109 CN200410018109 CN 200410018109 CN 200410018109 A CN200410018109 A CN 200410018109A CN 1268551 C CN1268551 C CN 1268551C
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- bentonite
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- wilkinite
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- phosphate radical
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000000440 bentonite Substances 0.000 title claims abstract description 38
- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 38
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 title claims abstract 3
- 239000002351 wastewater Substances 0.000 title abstract description 4
- 238000012545 processing Methods 0.000 title description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 239000000725 suspension Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 9
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 239000000047 product Substances 0.000 claims description 19
- 239000002689 soil Substances 0.000 claims description 16
- 238000005341 cation exchange Methods 0.000 claims description 12
- 241000282326 Felis catus Species 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 6
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- CLWAXFZCVYJLLM-UHFFFAOYSA-N 1-chlorohexadecane Chemical compound CCCCCCCCCCCCCCCCCl CLWAXFZCVYJLLM-UHFFFAOYSA-N 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 150000003222 pyridines Chemical class 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 abstract description 42
- 239000010452 phosphate Substances 0.000 abstract description 42
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 6
- 239000011229 interlayer Substances 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 230000001112 coagulating effect Effects 0.000 abstract description 3
- -1 hydroxy metals Chemical class 0.000 abstract description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 abstract 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- RKFMOTBTFHXWCM-UHFFFAOYSA-M [AlH2]O Chemical compound [AlH2]O RKFMOTBTFHXWCM-UHFFFAOYSA-M 0.000 abstract 1
- 125000002091 cationic group Chemical group 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 60
- 229950011260 betanaphthol Drugs 0.000 description 30
- 239000010865 sewage Substances 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 6
- 239000013543 active substance Substances 0.000 description 6
- 238000013019 agitation Methods 0.000 description 6
- 238000005119 centrifugation Methods 0.000 description 6
- 239000011630 iodine Substances 0.000 description 6
- 229910052740 iodine Inorganic materials 0.000 description 6
- 239000006228 supernatant Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000000274 adsorptive effect Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- ZMXIYERNXPIYFR-UHFFFAOYSA-N 1-ethylnaphthalene Chemical compound C1=CC=C2C(CC)=CC=CC2=C1 ZMXIYERNXPIYFR-UHFFFAOYSA-N 0.000 description 1
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical class [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- RJTJVVYSTUQWNI-UHFFFAOYSA-N beta-ethyl naphthalene Natural products C1=CC=CC2=CC(CC)=CC=C21 RJTJVVYSTUQWNI-UHFFFAOYSA-N 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 235000021321 essential mineral Nutrition 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The present invention discloses a preparing method of a wastewater treating material of inorganic-organic composite bentonite. The method has the steps: (1) bentonite crushed and sieved by 100 meshes is thrown into a cationic surface active agent solution, and stir is carried out for 1 to 2 hours in a water bath way; (2) AlCl3 solution is added into the suspension solution, the dosage is from 1 to 10 mmol AlCl3 per gram of the bentonite, and the stir is carried out for 5 to 10 minutes; (3) under the stir of the water bath, NaOH or Na2CO3 solution is dripped into the suspension solution, and a product is aged for more than 10 hours at a room temperature; (4) after washing and filtration are carried out for many times, drying and grinding are carried out. The present invention has the advantages that surface active agents are firstly exchanged into an interlayer of the bentonite, hydroxyl aluminum is formed on the interlayer and the surface of the bentonite, the competition function of hydroxy metals and the surface active agents at the interlayer of the bentonite is reduced, the exchange and the adsorption of phosphate radicals are easy, the coagulating performance of the modified bentonite is improved, and organic pollutants and phosphate in wastewater can be simultaneously removed.
Description
Technical field
The present invention relates to a kind of inorganic-organic composite bentonite wastewater treatment preparation methods.
Background technology
China's shortage of water resources, water pollution is on the rise.Reached 207.2 hundred million tons and 232.3 hundred million tons respectively as China's industry in 2002 and town domestic sewage quantity discharged, the chemical oxygen demand (COD) total emission volumn is 1366.9 ten thousand tons, and wherein the processing rate of town domestic sewage has only 22.3%.A large amount of dischargings of sewage cause water pollution, and particularly eutrophication and hardly degraded organic substance are seriously polluted.
China's industry at present and urban domestic wastewater generally are to focus on after mixing, and cause containing simultaneously in the sewage a large amount of organic pollutants, phosphoric acid salt and various other pollutent, and sewage treatment process complexity and efficient are not high.The method dephosphorization that conventional sewage treatment process general using biological and chemical combines, but phosphor-removing effect is good inadequately, is difficult to remove the phosphate radical of lower concentration.Studies show that the concentration of phosphate radical reaches 0.03ppm and just can cause eutrophication in the lake.And absorption method is to remove the effective ways of low phosphorus acid group, and wherein the most key is the exploitation high-efficiency adsorbent.Persistent organic pollutants generally are to remove by technologies such as coagulating sedimentation, chemical oxidations in the sewage.Coagulating sedimentation is relatively poor to deliquescent Persistent organic pollutants removal effect; Chemical oxidation has selectivity to hardly degraded organic substance, and the processing cost height, is not suitable for handling the town sewage that has a large capacity and a wide range.Therefore, the adsorption treatment method of Persistent organic pollutants has been subjected to various countries environmentalists' extensive concern too in the sewage.
Wilkinite be a kind of be the tonstein of essential mineral with the montmorillonite
[1], later organic adsorptive power is strengthened greatly through tensio-active agent is organically-modified, but the organobentonite coagulation performance to be poor, the solid-liquid separation difficulty has limited its practical application in sewage disposal.The hydroxy metal pillared bentonite adsorbs various acid ions also broad research, and the solid-liquid sub-argument is functional, but it can not remove organic pollutant in the sewage
[2]Therefore, with tensio-active agent and the common modified alta-mud of hydroxy metal and the inorganic-organic composite bentonite (IOBs) that makes might have some good characteristics of organobentonite and pillared bentonite concurrently, be used for containing simultaneously the municipal sewage treatment of multiple pollutents such as organism and phosphate radical.But inorganic at present-organic composite bentonite preparation often all is that tensio-active agent and hydroxy metal is simultaneously pillared between bentonite bed, hydroxy metal changes into the form of metal oxide after heat treated, therefore generally all be to be used for the adsorption treatment organism, research inorganic pollutant such as hardly degraded organic substance in the absorption-coagulating treatment complex wastewater and phosphate radical simultaneously also so far.Prepared inorganic-organic the composite bentonite of the present invention is pillared between bentonite bed with tensio-active agent, and hydroxy metal can be simultaneously between bentonite bed and the surface form, so adsorb organic compound and phosphate radical simultaneously; The tensio-active agent of composite bentonite interlayer absorption and the amount of hydroxy metal have surpassed bentonitic cation exchange capacity, so composite bentonite has certain positive charge, and its dispersing property strengthens greatly under the electrical charge rejection effect; In addition, the existence of surface hydroxyl aluminium also makes the coagulation performance of composite bentonite strengthen to some extent.
China's wilkinite mineral products are abundant, and prognostic reserves reach more than 7,000,000,000 tons
[3]The wilkinite of using in the invention is from area, China Inner Mongol, and cation exchange capacity is 108.4mmol/100g.
[1] Wang Hongxi, wilkinite, Geology Publishing House, 1980.7
[2] Yao Daokun etc., Chinese wilkinite mineral deposit and Application and Development thereof, Geology Publishing House, 1994.1
[3] chemical industry mineral and processing, 2003.2
Summary of the invention
The purpose of this invention is to provide a kind of inorganic one organic composite bentonite wastewater treatment preparation methods.
The step of method is:
1) wilkinite original soil dry, that pulverize, cross 40～100 order mesh sieves is added in cats product chloro-hexadecane yl pyridines or the cetyl trimethylammonium bromide solution, dosage of surfactant is 0.4～1.0 times of wilkinite original soil cation exchange capacity, then 50～70 ℃ of stirred in water bath 1～2 hour;
2) with the AlCl of 0.1～1.0mol/L
3Solution joins in the above-mentioned suspension, AlCl
3With bentonitic proportioning be 1～10mmol AlCl
3/ g wilkinite stirred 5～10 minutes;
3) under 50～70 ℃ of stirring in water bath conditions, the NaOH of 0.2～1.0mol/L or Na
2CO
3Drips of solution is added in the above-mentioned suspension, up to OH
-/ Al
3+=1.5～2.5, the product aged at room temperature is more than 10 hours;
4) behind washing and filtering repeatedly, 60～90 ℃ of oven dry down, grind, cross 100 mesh sieves and get final product.
Advantage of the present invention is to use earlier the cats product modified alta-mud, and preparation organobentonite suspension adds AlCl then
3Solution, next use alkali-titration, make oxyaluminum between bentonite bed, to form, also can form at the wilkinite outside surface, avoided hydroxy metal and the tensio-active agent competitive adsorption between bentonite bed, simultaneously also kept the hydroxyl in the composite earth greatly, helped the exchange absorption of phosphate radical and improve the modified alta-mud coagulation performance.The existence of cats product has improved composite bentonite greatly to organic adsorptive power; There is the adsorptive power that can increase acid ions such as phosphate radical, arsenates in the hydroxy metal ionic simultaneously.Therefore of the present invention inorganic-organic composite bentonite can remove the multiple pollutent in the water body simultaneously.
Embodiment
Embodiment 1
It according to the CTMAB add-on 1 times of wilkinite cation exchange capacity; Al
3+/ wilkinite=10mmol/g; OH
-/ Al
3+=2.4 proportioning synthesizing inorganic-organic composite bentonite IOBs
1, the contrast experiment of adsorbing 2-Naphthol and phosphate radical then with corresponding organophilic clay simultaneously.
With in the CTMAB cats product solution of dry, as to pulverize 50 mesh sieves wilkinite original soil 20g input 200ml (contain CTMAB7.72g in the solution, be equivalent to 1 times wilkinite cation exchange capacity), stirred 2 hours; AlCl with 0.8mol/L
3Solution 250ml joins in the above-mentioned suspension, stirs 5 minutes; The Na of the following 0.8mol/L of intense agitation then
2CO
3Solution 600ml dropwise is added drop-wise in the above-mentioned suspension, and more than experiment all is to carry out under 60 ℃ of water bath condition, product aged at room temperature 12 hours; 70 ℃ of oven dry behind washing and filtering are repeatedly ground, and cross 100 mesh sieves, make inorganic-organic composite bentonite IOBs
1Made organobentonite OCs in order to contrast with 20g soil and 7.72gCTMAB
1
Add the mixing solutions of 20ml phosphate radical and 2-Naphthol in the iodine flask of 50ml, wherein the concentration of phosphate radical is 5ppm (in P), and the concentration of 2-Naphthol is 20ppm, adds the IOBs of 0.05g then respectively
1And OCs
1, the concentration of phosphate radical and 2-Naphthol in the supernatant liquor is measured in 25 ℃ of constant temperature vibration 4 hours after the centrifugation.The result shows, OCs
1Clearance to 2-Naphthol has reached 92.0%, but the clearance of phosphate radical is had only 8.8%; And IOBs
1Clearance to 2-Naphthol and phosphate radical has reached 91.1% and 96.5% respectively, and the clearance of phosphate radical is compared OCs
1Improved more than ten times.
Embodiment 2
It according to the CPC add-on 1 times of wilkinite cation exchange capacity; Al
3+/ wilkinite=2.5mmol/g; OH
-/ Al
3+=2.0 proportioning is synthesized composite bentonite IOBs
2, the contrast experiment of adsorbing 2-Naphthol and phosphate radical then with corresponding organophilic clay simultaneously.
With in the CPC cats product solution of dry, as to pulverize 80 mesh sieves wilkinite original soil 20g input 200ml (contain CPC7.44g in the solution, be equivalent to bentonitic cation exchange capacity), stirred 2 hours; AlCl with 0.2mol/L
3Solution 250ml joins in the above-mentioned suspension, stirs 5 minutes; The NaOH solution 250ml of the following 0.4mol/L of intense agitation dropwise is added drop-wise in the above-mentioned suspension then, and more than experiment all is to carry out under 60 ℃ of water bath condition, product aged at room temperature 12 hours; 70 ℃ of oven dry behind washing and filtering are repeatedly ground, and cross 100 mesh sieves, make inorganic-organic composite bentonite IOBs
2Made organobentonite OCs in order to contrast with 20g soil and 7.44gCPC
2
Add the mixing solutions of 20ml phosphate radical and 2-Naphthol in the iodine flask of 50ml, wherein the concentration of phosphate radical is 5ppm (in P), and the concentration of 2-Naphthol is 20ppm, adds the IOBs of 0.05g then respectively
6And OCs
2, the concentration of phosphate radical and 2-Naphthol in the supernatant liquor is measured in 25 ℃ of constant temperature vibration 4 hours after the centrifugation.The result shows, OCs
2Clearance to 2-Naphthol has reached 90.9%, but the clearance of phosphate radical is had only 8.3%; And IOBs
2Clearance to ethylnaphthalene and phenol phosphate radical has reached 88.8% and 86.5% respectively, and the clearance of phosphate radical is compared OCs
2Ten times have been improved.
Embodiment 3
Changing dosage of surfactant, is 0.8 times of wilkinite cation exchange capacity according to the CPC add-on; Al
3+/ wilkinite=2.5mmol/g; OH
-/ Al
3+=1.8 proportioning is synthesized composite bentonite IOBs
3, the experiment of adsorbing 2-Naphthol and phosphate radical then simultaneously.
With in the CPC cats product solution of dry, as to pulverize 60 mesh sieves wilkinite original soil 20g input 200ml (contain CPC5.96g in the solution, be equivalent to bentonitic 0.8 times of exchange capacity), stirred 2 hours; AlCl with 0.2mol/L
3Solution 250ml joins in the above-mentioned suspension, stirs 5 minutes; The NaOH solution 250ml of the following 0.4mol/L of intense agitation dropwise is added drop-wise in the above-mentioned suspension then, and more than experiment all is to carry out under 50 ℃ of water bath condition, product aged at room temperature 12 hours; 70 ℃ of oven dry behind washing and filtering are repeatedly ground, and cross 100 mesh sieves, make inorganic-organic composite bentonite IOBs
3.
Add the mixing solutions of 20ml phosphate radical and 2-Naphthol in the iodine flask of 50ml, wherein the concentration of phosphate radical is 5ppm (in P), and the concentration of 2-Naphthol is 20ppm, adds the IOBs of 0.05g then
3, the concentration of phosphate radical and 2-Naphthol in the supernatant liquor is measured in 25 ℃ of constant temperature vibration 4 hours after the centrifugation.The result shows, IOBs
3Soil has reached 87.4% and 86.5% respectively to the clearance of 2-Naphthol and phosphate radical.
Embodiment 4
Changing dosage of surfactant, is 0.6 times of wilkinite cation exchange capacity according to the CPC add-on; Al
3+/ wilkinite=2.5mmol/g; OH
-/ Al
3+=1.5 proportioning is synthesized composite bentonite IOBs
4, the experiment of adsorbing 2-Naphthol and phosphate radical then simultaneously.
With in the CPC cats product solution of dry, as to pulverize 100 mesh sieves wilkinite original soil 20g input 200ml (contain CPC4.46g in the solution, be equivalent to bentonitic 0.6 times of exchange capacity), stirred 2 hours; AlCl with 0.2mol/L
3Solution 250ml joins in the above-mentioned suspension, stirs 5 minutes; The NaOH solution 250ml of the following 0.4mol/L of intense agitation dropwise is added drop-wise in the above-mentioned suspension then, and more than experiment all is to carry out under 80 ℃ of water bath condition, product aged at room temperature 12 hours; 70 ℃ of oven dry behind washing and filtering are repeatedly ground, and cross 100 mesh sieves, make inorganic-organic composite bentonite IOBs
4.
Add the mixing solutions of 20ml phosphate radical and 2-Naphthol in the iodine flask of 50ml, wherein the concentration of phosphate radical is 5ppm (in P), and the concentration of 2-Naphthol is 20ppm, adds the IOBs of 0.05g then
4, the concentration of phosphate radical and 2-Naphthol in the supernatant liquor is measured in 25 ℃ of constant temperature vibration 4 hours after the centrifugation.The result shows, IOBs
4Soil has reached 83.2% and 81.0% respectively to the clearance of 2-Naphthol and phosphate radical.
Embodiment 5
Change OH
-And Al
3+Ratio, be 1 times of wilkinite cation exchange capacity according to the CPC add-on; Al
3+/ wilkinite=2.5mmol/g; OH
-/ Al
3+=2.5 proportioning is synthesized composite bentonite IOBs
5, adsorb 2-Naphthol and phosphate radical then simultaneously.
With in the CPC cats product solution of dry, as to pulverize 100 mesh sieves wilkinite original soil 20g input 200ml (contain CPC7.44g in the solution, be equivalent to bentonitic exchange capacity), stirred 2 hours; AlCl with 0.2mol/L
3Solution 250ml joins in the above-mentioned suspension, stirs 5 minutes; The NaOH solution 312.5ml of the following 0.4mol/L of intense agitation dropwise is added drop-wise in the above-mentioned suspension then, and more than experiment all is to carry out under 60 ℃ of water bath condition, product aged at room temperature 12 hours; 70 ℃ of oven dry behind washing and filtering are repeatedly ground, and cross 100 mesh sieves, make inorganic-organic composite bentonite IOBs
5
Add the mixing solutions of 20ml phosphate radical and 2-Naphthol in the iodine flask of 50ml, wherein the concentration of phosphate radical is 5ppm (in P), and the concentration of 2-Naphthol is 20ppm, adds the IOBs of 0.05g then
5, the concentration of phosphate radical and 2-Naphthol in the supernatant liquor is measured in 25 ℃ of constant temperature vibration 4 hours after the centrifugation.The result shows, IOBs
5Soil has reached 91.1% and 83.5% respectively to the clearance of 2-Naphthol and phosphate radical.
Embodiment 6
Change Al
3+/ bentonitic ratio is 1 times of wilkinite cation exchange capacity according to the CPC add-on; Al
3+/ wilkinite=1.0mmol/g; OH
-/ Al
3+=2.0 proportioning is synthesized composite bentonite IOBs
6, the experiment of adsorbing 2-Naphthol and phosphate radical then simultaneously.
With in the CPC cats product solution of dry, as to pulverize 100 mesh sieves wilkinite original soil 20g input 200ml (contain CPC7.44g in the solution, be equivalent to bentonitic exchange capacity), stirred 2 hours; AlCl with 0.2mol/L
3Solution 100ml joins in the above-mentioned suspension, stirs 5 minutes; The NaOH solution 100ml of the following 0.4mol/L of intense agitation dropwise is added drop-wise in the above-mentioned suspension then, and more than experiment all is to carry out under 60 ℃ of water bath condition, product aged at room temperature 12 hours; 70 ℃ of oven dry behind washing and filtering are repeatedly ground, and cross 100 mesh sieves, make inorganic-organic composite bentonite IOBs
6
In the iodine flask of 50ml, add the 20ml phosphate radical and mixing solutions, wherein the concentration of phosphate radical is 5ppm (in P), the concentration of 2-Naphthol is 20ppm, adds the IOBs of 0.05g then
6, the concentration of phosphate radical and 2-Naphthol in the supernatant liquor is measured in 25 ℃ of constant temperature vibration 4 hours after the centrifugation.The result shows, IOBs
6Soil has reached 90.7% and 96.5% respectively to the clearance of 2-Naphthol and phosphate radical.
Claims (1)
1, a kind of inorganic-organic composite bentonite wastewater treatment material preparation method, it is characterized in that the step of method is:
1) wilkinite original soil dry, that pulverize, cross 40～100 mesh sieves is added in cats product chloro-hexadecane yl pyridines or the cetyl trimethylammonium bromide solution, dosage of surfactant is 0.4～1.0 times of wilkinite original soil cation exchange capacity, then 50～70 ℃ of stirred in water bath 1～2 hour;
2) with the AlCl of 0.1～1.0mol/L
3Solution joins in the above-mentioned suspension, AlCl
3With bentonitic proportioning be 1～10mmol AlCl
3/ g wilkinite stirred 5～10 minutes;
3) under 50～70 ℃ of stirring in water bath conditions, the NaOH of 0.2～1.0mol/L or Na
2CO
3Drips of solution is added in the above-mentioned suspension, up to OH
-/ Al
3+=1.5～2.5, the product aged at room temperature is more than 10 hours;
4) behind washing and filtering repeatedly, 60～90 ℃ of oven dry down, grind, cross 100 mesh sieves and get final product.
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|---|---|---|---|
| CN 200410018109 CN1268551C (en) | 2004-04-28 | 2004-04-28 | Method for preparing waste water processing materials of organic-inorganic composite bentonite |
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| CN1268551C true CN1268551C (en) | 2006-08-09 |
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| CN100429146C (en) * | 2006-11-27 | 2008-10-29 | 浙江大学 | Method for synthesizing composite material of organic - inorganic bentonite |
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2004
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101724856B (en) * | 2009-12-11 | 2012-03-07 | 北京工业大学 | Method for preparing hexadecyl trimethyl ammonium bromide doped foam nickel catalytic electrode |
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