CN104084142A - Preparation method of physiochemically-modified macadimia nutshell adsorbing agent - Google Patents
Preparation method of physiochemically-modified macadimia nutshell adsorbing agent Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 27
- 241000208467 Macadamia Species 0.000 claims description 83
- 239000003463 adsorbent Substances 0.000 claims description 40
- 238000012986 modification Methods 0.000 claims description 34
- 230000004048 modification Effects 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 27
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 14
- 239000010802 sludge Substances 0.000 claims description 13
- 230000007935 neutral effect Effects 0.000 claims description 10
- 238000007873 sieving Methods 0.000 claims description 10
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- 238000001035 drying Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- XQAXGZLFSSPBMK-UHFFFAOYSA-M [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;chloride;trihydrate Chemical compound O.O.O.[Cl-].C1=CC(=[N+](C)C)C=C2SC3=CC(N(C)C)=CC=C3N=C21 XQAXGZLFSSPBMK-UHFFFAOYSA-M 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 30
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 27
- 229960000907 methylthioninium chloride Drugs 0.000 description 27
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000001045 blue dye Substances 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000004043 dyeing Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 7
- 239000000975 dye Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000008363 phosphate buffer Substances 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 244000046052 Phaseolus vulgaris Species 0.000 description 3
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- RZUBARUFLYGOGC-MTHOTQAESA-L acid fuchsin Chemical compound [Na+].[Na+].[O-]S(=O)(=O)C1=C(N)C(C)=CC(C(=C\2C=C(C(=[NH2+])C=C/2)S([O-])(=O)=O)\C=2C=C(C(N)=CC=2)S([O-])(=O)=O)=C1 RZUBARUFLYGOGC-MTHOTQAESA-L 0.000 description 2
- OYUZMQYZGSMPII-UHFFFAOYSA-L disodium 4-hydroxy-7-[(5-hydroxy-6-phenyldiazenyl-7-sulfonatonaphthalen-2-yl)amino]-3-phenyldiazenylnaphthalene-2-sulfonate Chemical compound [Na+].[Na+].Oc1c(N=Nc2ccccc2)c(cc2cc(Nc3ccc4c(O)c(N=Nc5ccccc5)c(cc4c3)S([O-])(=O)=O)ccc12)S([O-])(=O)=O OYUZMQYZGSMPII-UHFFFAOYSA-L 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 2
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 2
- 229940012189 methyl orange Drugs 0.000 description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
- 229940043267 rhodamine b Drugs 0.000 description 2
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000008790 Musa x paradisiaca Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
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- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- WLWFNJKHKGIJNW-UHFFFAOYSA-N Phensuximide Chemical compound O=C1N(C)C(=O)CC1C1=CC=CC=C1 WLWFNJKHKGIJNW-UHFFFAOYSA-N 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
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- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 229910021641 deionized water Inorganic materials 0.000 description 1
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- HPYNZHMRTTWQTB-UHFFFAOYSA-N dimethylpyridine Natural products CC1=CC=CN=C1C HPYNZHMRTTWQTB-UHFFFAOYSA-N 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
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- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a method for preparing an adsorbing agent by adopting macadimia nutshells as raw materials and modifying the materials and belongs to the field of preparation of the adsorbing agent materials. By adoption of the method, the physiochemically-modified macadimia nutshell adsorbing agent is obtained by adopting waste macadimia nutshells as the raw materials and carrying out biological treatment and physiochemical treatment on the macadimia nutshells. Proved by an experimental result, the adsorbing amount of the physiochemically-modified macadimia nutshell adsorbing agent prepared by the method for methylene blue trihydrate can reach 396mg/g, and the physiochemically-modified macadimia nutshell adsorbing agent has the advantages of high chemical stability, high mechanical strength and easy regeneration. The preparation method disclosed by the invention is simple in manufacturing process and low in cost.
Description
Technical field
The preparation method who the present invention relates to a kind of materialization modification macadamia shell adsorbent, belongs to field of material preparation.
Background technology
Dyeing waste water contains a large amount of organic pollutions, and dyeing waste water is entered after water body and will consume a large amount of dissolved oxygens, destroys the ecological balance of water environment, harm fish and other hydrobiological existence.The organic pollution sinking under water in addition, can produce the pernicious gases such as hydrogen sulfide because of anaerobic digestion, further worsen environment.The color and luster of dyeing waste water is dark, has a strong impact on the outward appearance of receiving water body.The method for the treatment of of dyeing and printing mainly contains coagulating sedimentation, air supporting, membrane separation process, oxidation-reduction method, ion-exchange, electrodialysis and absorption method etc. now.But these methods all exist, and cost is high, raw materials consumption causes greatly and easily secondary pollution problems.
Biomass castoff is a kind of raw material that reuse.Reclaim biomass castoff, through simple modification, for adsorption treatment dyeing waste water, reach the object of the treatment of wastes with processes of wastes against one another, it has theory and practical significance.At present, many scholars had attempted employing biomass castoff, as rice husk, banana skin, tea waste residue, stalk, lotus leaf and bagasse etc. have been made adsorbent, for the treatment of waste water.
The persons such as Jiang Hongmei as adsorbent, study its adsorption effect to methylene blue with modification bamboo shoot skins.The bamboo shoot skins that recovery is obtained is first used running water and deionized water soaking flushing repeatedly, adopts 60 DEG C to dry after 24h and pulverize, and then in bamboo shoot skins, adds alkali lye, at room temperature reaction, after finally filtering, rinses to neutral with clear water, dries modification bamboo shoot skins.Research is found: modification bamboo shoot skins can reach 25mg/g to the maximum adsorption capacity of methylene blue.Although the method raw material cheapness, it is convenient to collect, and manufacturing process is simple, and its adsorption capacity is little, and use value is not high.In " Adsorption behavior of Direct Red12B and Rhodamine B from water onto surfactant-modified coconut coir pith " literary composition that the people such as M.V.Sureshkuma deliver in Colloids and Surfaces A:Physicochem.Eng.Aspects317 (2008) 277 – 283 periodicals, adopt cetab modification cocoanut shell, study the impact of the material modified Adsorption effect on direct red 12B and rhodamine B, its adsorption capacity is respectively 76.3mg/g and 14.9mg/g.Equally, although its preparation method is simple, its adsorption effect is not obvious.The people such as He Lifen are at environmental project journal, 2013,7 (12): in " tossa active carbon is to methylene blue and Adsorption of Methyl Orange dynamics " literary composition of delivering in 4735～4740 periodicals, reclaim the tossa obtaining by employing, soak phosphoric acid solution, take out oven dry and be placed in tube type resistance furnace, under nitrogen protection, be activated to 450 DEG C, and be incubated 1h; Finally adopt distilled water to clean to neutral post-drying, just obtain tossa active carbon.Research discovery, its maximum adsorption capacity to methylene blue reaches 270mg/g, and the maximum adsorption capacity of methyl orange is reached to 220mg/g.Although the adsorbent adsorption effect that the method obtains is better, its manufacturing process bothers, and cost of manufacture is high, utilization generalization is little.The people such as Ye Lin are at Southwestern Normal University's journal (natural science edition), 2014,39 (4): in " the absorption mechanics study of modification bean dregs to acid fuchsin " literary composition of delivering in 84～89 periodicals, by bean dregs are passed through respectively after epoxychloropropane, N-N dimethyl formamide, pyridine and dimethylamine modification, NaOH, hydrochloric acid, ethanol and distilled water for product are cleaned, and vacuum drying 12 hours, obtain modification bean dregs adsorbent.Research discovery, its maximum adsorption to acid fuchsin reaches 217.39mg/g.Equally, the adsorption effect of inferior method is better, but its manufacturing process is loaded down with trivial details, is not suitable for actual production.
At present also few about adopting modified biomass material processed dyeing waste water in paper and patent, have no adopt the ultrasonic alkali modification macadamia shell of anaerobism powder as adsorbent the method for Adsorption dyeing waste water.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention is to provide a kind of macadamia shell absorbent preparation method of materialization modification, the materialization modification macadamia shell adsorbent outward appearance gray powder obtaining, the materialization modification macadamia shell adsorbent that preparation method of the present invention obtains has advantages of that specific area is large, chemical stability good, cost of manufacture is low and easy regeneration.
In order to solve the problems of the technologies described above, the technology used in the present invention means are:
A preparation method for materialization modification macadamia shell adsorbent, comprises the steps:
Step 1, biological treatment stage:
Macadamia shell is cleaned, pulverizes, sieved; Macadamia shell powder after sieving and anaerobic sludge mixing are placed in to sealed tube, sealed tube are placed in to the water-bath of 35 DEG C～45 DEG C, Anaerobic Treatment 7～15 days; Macadamia shell powder is taken out from sealed tube, clean and drying for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.05mol/L～0.15mol/L by concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of ultrasonic wave that ultrasonic power is 80w～100w; After ultrasonic processing, filter, the material after filtering is cleaned to neutral to final drying.
Wherein, in step 1, the macadamia shell powder diameter after sieving is less than 0.075mm.
Wherein, in step 1, the addition of described anaerobic sludge is that every gram of macadamia shell powder adds 15ml～30ml anaerobic sludge, and anaerobic sludge of the present invention comes from the second pond mud of Sewage Plant.
Wherein, in step 1, described baking temperature is 60 DEG C～105 DEG C.
Wherein, in step 2, for every gram of macadamia shell powder, adding 10ml concentration is the sodium hydroxide solution of 0.05mol/L～0.15mol/L.
Wherein, in step 2, the time of described ultrasonic processing is 100min～140min.
Wherein, in step 2, described baking temperature is 60 DEG C～105 DEG C.
Beneficial effect: preparation method of the present invention is taking abandoned biomass material macadamia shell as raw material, pass through Anaerobic Treatment, ultrasonication and alkali modification, obtain the macadamia shell adsorbent of materialization modification, adsorbent of the present invention is to removing the dye of positive ion in waste water from dyestuff, especially the removal of methylene blue dye is had to remarkable result, under alkali condition, adsorbent of the present invention can reach 396mg/g to the adsorbance of methylene blue, preparation method's manufacture craft of the present invention is simple, cost is low, it is high that the product making has mechanical strength, chemical stability advantage good and that easily regenerate.
Brief description of the drawings
Fig. 1 is that the macadamia shell adsorbent that the embodiment of the present invention 6 makes is subject to pH value to affect figure on methylene blue adsorption number effect;
Fig. 2 is that the macadamia shell adsorbent that the embodiment of the present invention 6 makes is subject to time effects figure to methylene blue adsorption number effect;
Fig. 3 is that the macadamia shell adsorbent that the embodiment of the present invention 6 makes is subject to initial soln concentration affects figure to methylene blue adsorption number effect;
Fig. 4 is the ESEM phenogram of the macadamia shell adsorbent that makes of the embodiment of the present invention 6,20000 times of multiplication factors;
Fig. 5 is the ESEM phenogram after the macadamia shell adsorbent Liquidity limit dyestuff methylene blue that makes of the embodiment of the present invention 6,20000 times of multiplication factors.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme of the present invention is elaborated.But the scope of protection of present invention is not limited to the scope that embodiment represents, the equivalence of doing according to structure, feature and principle described in patent claim of the present invention therefore all changes or modifies, and is included in patent claim of the present invention.
Embodiment 1
A preparation method for materialization modification macadamia shell adsorbent, comprises the steps:
Step 1, biological treatment stage:
The macadamia shell of recovery is tentatively cleaned and pulverized, cross 120 object sieves, it is carried out to particle diameter separation; Macadamia shell powder after sieving and the mixing of 15ml anaerobic sludge are placed in to sealed tube, sealed tube are placed in to the water-bath of 45 DEG C, Anaerobic Treatment 10 days; Macadamia shell powder is taken out from sealed tube, clean and adopt 80 DEG C of dry for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.1mol/L by 10ml concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of the ultrasonic wave 120min that ultrasonic power is 90w; After ultrasonic processing, filter, first adopt the sodium chloride solution of 1mol/L to clean 2 times the material after filtration, then with phosphate buffer cleaning one time, finally adopt washed with de-ionized water to neutral, finally adopt 60 DEG C to be dried.
Embodiment 2
A preparation method for materialization modification macadamia shell adsorbent, comprises the steps:
Step 1, biological treatment stage:
The macadamia shell of recovery is tentatively cleaned and pulverized, cross 120 object sieves, it is carried out to particle diameter separation; Macadamia shell powder after sieving and the mixing of 23ml anaerobic sludge are placed in to sealed tube, sealed tube are placed in to the water-bath of 40 DEG C, Anaerobic Treatment 7 days; Macadamia shell powder is taken out from sealed tube, clean and adopt 60 DEG C of dry for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.1mol/L by 10ml concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of the ultrasonic wave 120min that ultrasonic power is 90w; After ultrasonic processing, filter, first adopt the sodium chloride solution of 1mol/L to clean 2 times the material after filtration, then with phosphate buffer cleaning one time, finally adopt washed with de-ionized water to neutral, finally adopt 60 DEG C to be dried.
Embodiment 3:
A preparation method for materialization modification macadamia shell adsorbent, comprises the steps:
Step 1, biological treatment stage:
The macadamia shell of recovery is tentatively cleaned and pulverized, cross 120 object sieves, it is carried out to particle diameter separation; Macadamia shell powder after sieving and the mixing of 30ml anaerobic sludge are placed in to sealed tube, sealed tube are placed in to the water-bath of 35 DEG C, Anaerobic Treatment 15 days; Macadamia shell powder is taken out from sealed tube, clean and adopt 105 DEG C of dry for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.1mol/L by 10ml concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of the ultrasonic wave 120min that ultrasonic power is 90w; After ultrasonic processing, filter, first adopt the sodium chloride solution of 1mol/L to clean 2 times the material after filtration, then with phosphate buffer cleaning one time, finally adopt washed with de-ionized water to neutral, finally adopt 60 DEG C to be dried.
Embodiment 4
A preparation method for materialization modification macadamia shell adsorbent, comprises the steps:
Step 1, biological treatment stage:
The macadamia shell of recovery is tentatively cleaned and pulverized, cross 120 object sieves, it is carried out to particle diameter separation; Macadamia shell powder after sieving and the mixing of 20ml anaerobic sludge are placed in to sealed tube, sealed tube are placed in to the water-bath of 35 DEG C, Anaerobic Treatment 10 days; Macadamia shell powder is taken out from sealed tube, clean and adopt 105 DEG C of dry for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.05mol/L by 10ml concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of the ultrasonic wave 140min that ultrasonic power is 80w; After ultrasonic processing, filter, first adopt the sodium chloride solution of 1mol/L to clean 2 times the material after filtration, then with phosphate buffer cleaning one time, finally adopt washed with de-ionized water to neutral, finally adopt 80 DEG C to be dried.
Embodiment 5
A preparation method for materialization modification macadamia shell adsorbent, comprises the steps:
Step 1, biological treatment stage:
The macadamia shell of recovery is tentatively cleaned and pulverized, cross 120 object sieves, it is carried out to particle diameter separation; Macadamia shell powder after sieving and the mixing of 20ml anaerobic sludge are placed in to sealed tube, sealed tube are placed in to the water-bath of 35 DEG C, Anaerobic Treatment 10 days; Macadamia shell powder is taken out from sealed tube, clean and adopt 60 DEG C of dry for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.15mol/L by 10ml concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of the ultrasonic wave 100min that ultrasonic power is 100w; After ultrasonic processing, filter, first adopt the sodium chloride solution of 1mol/L to clean 2 times the material after filtration, then with phosphate buffer cleaning one time, finally adopt washed with de-ionized water to neutral, finally adopt 105 DEG C to be dried.
Embodiment 6
A preparation method for materialization modification macadamia shell adsorbent, comprises the steps:
Step 1, biological treatment stage:
The macadamia shell of recovery is tentatively cleaned and pulverized, cross 120 object sieves, it is carried out to particle diameter separation; Macadamia shell powder after sieving and the mixing of 20ml anaerobic sludge are placed in to sealed tube, sealed tube are placed in to the water-bath of 35 DEG C, Anaerobic Treatment 10 days; Macadamia shell powder is taken out from sealed tube, clean and adopt 60 DEG C of dry for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.1mol/L by 10ml concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of the ultrasonic wave 120min that ultrasonic power is 90w; After ultrasonic processing, filter, first adopt the sodium chloride solution of 1mol/L to clean 2 times the material after filtration, then with phosphate buffer cleaning one time, finally adopt washed with de-ionized water to neutral, finally adopt 60 DEG C to be dried.
Adsorption experiment: the dyestuff that the present invention adopts is methylene blue.Take 0.025g materialization modification of the present invention macadamia shell adsorbent and add 50ml, in the methylene blue solution that concentration is 200mg/L.Vibrate 6 hours with being placed in the constant temperature oscillation case of 25 DEG C, make it reach adsorption equilibrium.Finally adopt visible-ultraviolet specrophotometer to survey its absorbance, by methylene blue graticule its concentration that converts to obtain.(1) calculates adsorbance according to the following formula:
in formula: Q: the adsorbance (mg/g) of macadamia shell adsorbent to methylene blue; C
0: initial methylene blue concentration (mg/L); C
e: methylene blue concentration (mg/L) after absorption; V: containing methylene blue solution volume (ml); W: the quality (g) that adds macadamia shell adsorbent.
Utilize the materialization modification macadamia shell adsorbent of preparing in embodiment 1-6 to remove the methylene blue in dyeing waste water.The adsorption experiment condition of each embodiment is as follows:
The dosage of the materialization modification macadamia shell adsorbent of preparing in embodiment 1-6 is 0.5g/L, methylene blue dye liquid waste concentration is 200mg/L, to adding in waste water after the materialization modification macadamia shell adsorbent that embodiment 1-6 makes, be placed in 25 DEG C of constant temperature oscillators 6h that vibrates, hunting speed is 180rpm.Upon adsorption reaching after balance, takes out solution, adopts the water system filter of 0.45 μ m to filter, and obtains adsorbance according to following formula (1):
The adsorbent absorption methylene blue dye solution adsorbance that embodiment 1-6 prepares is as shown in table 1 below:
Table 1
| Embodiment | Adsorbance (mg/g) |
| 1 | 254.36 |
| 2 | 257.81 |
| 3 | 255.46 |
| 4 | 257.45 |
| 5 | 260.12 |
| 6 | 253.04 |
Preparation method of the present invention, macadamia shell is carried out to anaerobism, alkalization and ultrasonic processing, can make the lignin in macadamia shell further softening, can also make the cellulose in macadamia shell more expand, loosen, thereby increase space, therefore makes the specific area of macadamia shell greatly increase, and then has greatly improved the adsorption capacity of macadamia shell.
To carry out the adsorption experiment situation to methylene blue dye under different condition as an example of the macadamia shell adsorbent of embodiment 6 example below.
(1) impact of pH:
Take the macadamia shell sorbing material of 0.025g embodiment 6, being added to 50ml concentration 200mg/L is in methylene blue dye solution, adopts hydrochloric acid and sodium hydroxide solution to regulate pH, makes its pH scope between 1.91～11.64.Finally adopt the constant temperature oscillation case of 25 DEG C, 180rpm vibration absorption 6h is set.As shown in Figure 1, macadamia shell adsorbent is subject to the impact of the initial pH of solution very large on the adsorption effect of methylene blue dye.Its adsorbance and clearance increase with the increase of pH.After pH is greater than 5, its adsorbance is all more than 250mg/g, and in the time that pH is 11.64, its adsorbance is 396mg/g.
(2) impact of adsorption time:
Take the macadamia shell sorbing material of 0.025g embodiment 6, being added to 50ml concentration 200mg/L is in methylene blue dye solution.Adopt the constant temperature oscillation case of 25 DEG C, 180rpm vibration absorption 0～840min is set.As shown in Figure 2, adsorbance and the clearance of macadamia shell sorbing material to methylene blue dye increases with the increase of adsorption time, and 0～15min rate of adsorption is very fast, and 15～120min rate of adsorption slows down, and substantially reaches adsorption equilibrium after 120min.
(3) impact of dyestuff initial concentration:
Take the macadamia shell sorbing material of 0.025g embodiment 6, being added to 50ml concentration 25～500mg/L is in methylene blue dye solution.Adopt the constant temperature oscillation case of 25 DEG C, 180rpm vibration absorption 6h is set.As shown in Figure 3, macadamia shell sorbing material increases with the increase of dyestuff initial concentration the adsorbance of methylene blue dye, and clearance reduces with the increase of dyestuff initial concentration, 25～200mg/L adsorbance changes very fast, and 200～500mg/L adsorbance changes slowly.
Claims (7)
1. a preparation method for materialization modification macadamia shell adsorbent, is characterized in that, comprises the steps:
Step 1, biological treatment stage:
Macadamia shell is cleaned, pulverizes, sieved; Macadamia shell powder after sieving and anaerobic sludge mixing are placed in to sealed tube, sealed tube are placed in to the water-bath of 35 DEG C～45 DEG C, Anaerobic Treatment 7～15 days; Macadamia shell powder is taken out from sealed tube, clean and drying for standby;
Step 2, the processing stage of materialization:
The potassium hydroxide that is 0.05mol/L～0.15mol/L by concentration adds in the macadamia shell powder of step 1; Mixed material is placed in to the ultrasonic processing of ultrasonic wave that ultrasonic power is 80w～100w; After ultrasonic processing, filter, the material after filtering is cleaned to neutral to final drying.
2. the preparation method of materialization modification macadamia shell adsorbent according to claim 1, is characterized in that, in step 1, the macadamia shell powder diameter after sieving is less than 0.075mm.
3. the preparation method of materialization modification macadamia shell adsorbent according to claim 1, is characterized in that, in step 1, the addition of described anaerobic sludge is that every gram of macadamia shell powder adds 15ml～30ml anaerobic sludge.
4. the preparation method of materialization modification macadamia shell adsorbent according to claim 1, is characterized in that, in step 1, described baking temperature is 60 DEG C～105 DEG C.
5. the preparation method of materialization modification macadamia shell adsorbent according to claim 1, is characterized in that, in step 2, for every gram of macadamia shell powder, adding 10ml concentration is the sodium hydroxide solution of 0.05mol/L～0.15mol/L.
6. the preparation method of materialization modification macadamia shell adsorbent according to claim 1, is characterized in that, in step 2, the time of described ultrasonic processing is 100min～140min.
7. the preparation method of materialization modification macadamia shell adsorbent according to claim 1, is characterized in that, in step 2, described baking temperature is 60 DEG C～105 DEG C.
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| CN104801282A (en) * | 2015-04-08 | 2015-07-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Preparation method of modified macadamia shell adsorbent |
| CN106908404A (en) * | 2017-03-23 | 2017-06-30 | 南通市纤维检验所 | A kind of NACF methylene blue adsorption value online test method |
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| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
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| CN104801282A (en) * | 2015-04-08 | 2015-07-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Preparation method of modified macadamia shell adsorbent |
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