CN101298327B - Blue algae bloom activated char and preparation thereof - Google Patents
Blue algae bloom activated char and preparation thereof Download PDFInfo
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- CN101298327B CN101298327B CN2008100580618A CN200810058061A CN101298327B CN 101298327 B CN101298327 B CN 101298327B CN 2008100580618 A CN2008100580618 A CN 2008100580618A CN 200810058061 A CN200810058061 A CN 200810058061A CN 101298327 B CN101298327 B CN 101298327B
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Abstract
The invention relates to a blue algae water bloom active carbon and a preparation method thereof. The active carbon is produced by drying the blue algae water bloom alga mud at the hign temperature of 250 to 600 DEG C for 0.5 to 2 hours. The invention starts a new trail for utilizing the blue algae water bloom as a resource. The method can effectively produce active carbon with blue algae water bloom, which can not only save resources but also is favorable to protect the ecological environment and finally the purpose of treating pollution and reducing the pollution treatment cost can be realized.
Description
Technical field
The present invention relates to a kind of blue algae bloom activated char and preparation method thereof.
Background technology
Body eutrophication is the great environmental problem that present countries in the world face.The distinct issues that body eutrophication brings are breaking out of blue-green alga bloom.Large-scale blue-green alga bloom has reduced water resources and has utilized usefulness, cause serious ecological damage and enormous economic loss, and the generation of cyanophycean toxin brings very big hidden danger to public health.The incident that relevant cyanophycean toxin is poisoned has report also the time.Blue-green algae is the ancient biology of a class, its remove have autotrophy sexual life mode and merger in algae such as red algae, brown alga or green algas, almost do not have any reason in addition and be referred to as algae.Take in from the cytology viewpoint, in fact it and bacterium are more approaching, and it has the 70S rrna and contains the cell walls of murein, and lacks real nucleus.The blue-green algae utmost point can tolerate drying, strong ionic concn change, organism decomposes too much and bad environment conditions such as the material that produces, anoxic, temperature change and shortage illumination.Blue-green alga bloom is growth fast in the eutrophy lake, assembles and the macroscopic algae clustering phenomena of formation in a large number on the water body top layer.Under the megathermal climate condition, mass mortality again after the blue-green algae colony of formation wawter bloom grows in a large number gives out insufferable stench, polluted air during decomposition, and dissolved oxygen in the mass consumption water often causes large quantities of fish deaths by suffocation simultaneously.Also containing the biotoxin of class Microcystin by name in the wawter bloom, is strong carcinogen." blue-green alga bloom " becomes a great problem of the Chinese water surrounding of current puzzlement at present.China pollutes " three lakes " such as the most serious Taihu Lake, Chaohu, Dian Chi and occurs blue algae bloom in succession, affects greatly for local common people's productive life.If blue-green alga bloom constantly can be fished for out from water body, along with the reduction of blue-green alga bloom biomass, the nitrogen phosphorus level of water body will reduce gradually, so accumulates over a long period, and water body will return to state of nature, finally realize the improvement of blue-green alga bloom.By wastewater and waste materials is carried out recycling, administer the purpose of polluting, reducing the pollution treatment cost thereby reach, be a key areas of environmental protection science and technology.
Gac has stronger adsorptivity and catalytic performance, and raw material is sufficient and safe, and acid and alkali-resistance, heat-resisting, water insoluble and advantages such as organic solvent, easy regeneration are a kind of environmentally friendly sorbent materials.Gac is widely used in three industrial wastes improvement, solvent recuperation, food-drink purification, carrier, medicine, gold extraction, semiconductor application, battery and electric energy storage etc.
Overwhelming majority carbonaceous material all can prepare gac, as timber, saw art, coal class, peat class, shell, fruit stone, bagasse and rice husk, oil waste material, waste or used plastics, waste and old leather, damaged tire, papermaking waste material, municipal wastes the like waste.Generally believe that at present shell is the optimum feed stock of preparation gac, but China's shell resource is very limited, and is difficult for concentrating, storing, cost an arm and a leg.In recent years, wastes lower to various prices, wide material sources have carried out the test of preparation gac in succession both at home and abroad.The Properties of Activated Carbon that is made by waste at present is not high, and practical application is also less, but cheap because of it, carbon content rate is high, material is easy to get, raw material sufficient and green non-poisonously favored day by day.
Domestic employing bamboo class, tobacco rod, bagasse, wheat straw, rice husk, cotton stalk, nut-shell and the active sludge the like waste studied prepares gac.Satisfy requirements such as the Properties of Activated Carbon that makes is stable, cost is lower, starting material must steady quality, obtain easily, require simultaneously production technique simply, economy, environmental protection.The methods such as chemical activation method, physical activation method, chemicals logos, catalytic activation method, supercritical technology, microwave heating of having developed in succession both at home and abroad prepare gac.
Summary of the invention
The purpose of this invention is to provide a kind of blue algae bloom activated char and this preparation method of active carbon; method of the present invention can effectively utilize blue-green alga bloom and produce gac; opened up blue-green alga bloom recycling new way, not only can economize on resources and help preserving the ecological environment.Finally reach and administer the purpose of polluting, reducing the pollution treatment cost.
The object of the present invention is achieved like this: this blue algae bloom activated char is to be prepared from 0.5～2 hour 250 ℃～600 ℃ pyroprocessing by the blue-green alga bloom algae mud of drying.Gained blue algae bloom activated char granularity is 0.074mm, and iodine sorption value is 966mg/g, and the methylene blue decolorizing ability is 115mg/g.
The preparation method of blue algae bloom activated char of the present invention is made up of following steps:
(1) adopt flocculence to collect blue-green alga bloom, preparation algae mud;
(2) blue-green alga bloom algae mud ZnCl
2Dipping, ZnCl
2With the mass ratio of blue-green alga bloom algae mud butt be 20～150%.
(3) above-mentioned blue-green alga bloom algae mud is in 100～110 ℃ of dehydrations down, oven dry;
(4) with the blue-green alga bloom algae mud of oven dry under anoxic condition, 250 ℃～600 ℃ pyroprocessing 0.5～2 hour, cooling promptly got blue algae bloom activated char.
Because contain more rich nutritive ingredient in the blue-green alga bloom, main component is phycobiliprotein, polysaccharide, fat, amino acid and unsaturated fatty acids etc., antiviral in addition, antitumor in addition and anti-microbial activity composition and enzyme inhibitors.Therefore, from the resource utilization angle, blue-green alga bloom is huge resources bank.Because blue-green algae carbon content rate height, biomass is huge when breaking out, and material is easy to get, raw material abundance, cheap, and the present invention can effectively utilize blue-green alga bloom and produce gac, not only can economize on resources and helps preserving the ecological environment.Finally reach and administer the purpose of polluting, reducing the pollution treatment cost, also opened up blue-green alga bloom recycling new way.
Embodiment
Embodiment 1:
(1) the cation-modified clay flocculating of blue-green alga bloom separates, and with adding the cation-modified clay of 600～1000ppm in the certain volume blue-green alga bloom, stirs, and leaves standstill 80 mesh sieves filtration after 10 minutes, collects algae mud;
(2) blue-green alga bloom burnettize and microwave radiation drying, with moisture content: 80% 200g blue-green alga bloom algae mud, mix thoroughly in the 1000ml beaker with 50g zinc chloride and 50g sodium bicarbonate, dipping 24h,, put into microwave sample dissolving stove, high-grade heating, until rap be powdered till;
(3) blue-green alga bloom liquid phase carbonization-activation during charing, adds the blue-green alga bloom dry powder 150g of whiteruss 300ml and burnettize in the charing bottle, heating charing bottle.Along with the whiteruss temperature progressively raises, surpass 100 ℃, sodium bicarbonate promptly begins to decompose in the blue-green alga bloom dry powder, discharges carbonic acid gas.Temperature continues to raise, and decomposes and accelerates.At 170 ℃～180 ℃, pass through 30min approximately, sodium bicarbonate promptly all is decomposed into yellow soda ash.The carbonic acid gas that discharges fills the air in the whiteruss top, forms an anoxybiotic charing environment with water-sealed drainage bottle.Simultaneously, moisture residual in the blue-green alga bloom dry powder is vaporized, and being risen by the distillation joint enters condenser, and the fluid drips of congealing into is gone in the water-sealed drainage bottle.Temperature is higher than 300 ℃, the whiteruss gasification, and rising enters the distillation joint, and the liquid that congeals into splashes in the charing bottle.Keep charing bottle temperature about 300 ℃, bubble formation reduces gradually in whiteruss.At this moment, charing and reactivation process finish;
(4) dewaxing during dewaxing, wraps in sample to be dewaxed in the fat-free filter paper bag, puts into extraction tube.Add dehydrated alcohol in the extraction flask, the heating extraction flask, the dehydrated alcohol gasification enters condenser by the pipe connecting rising, and the liquid that congeals into splashes in the extraction tube, whiteruss in the lixiviate sample.The dehydrated alcohol liquid level reach a certain height in the pipe to be extracted, and the dehydrated alcohol that is dissolved with whiteruss flows into extraction flask through siphon pipe.The dehydrated alcohol that flows in the extraction flask continues to be heated gasification, rising, condensation, splashes in the extraction tube, so moves in circles, till the whiteruss extracting fully;
(5) pickling, rinsing and microwave radiation be in dry, and it is 20% hydrochloric acid soln that concentration is adopted in pickling, and the time is 8h, adopts the vacuum filtration rinsing process after the pickling, with deionized water the pH value of material is washed till 7.0.Place triangular flask, put into microwave sample dissolving stove, high-grade heating is till the anhydrous pearl in bottleneck position condenses.
Embodiment 2:
In 100 ℃ of down dehydrations, oven dry, heating under the anoxic condition in the electric furnace preferably to 250 ℃ in sealing property makes blue-green alga bloom algae mud thermally equivalent 2 hours with blue-green alga bloom algae mud, cooling, pulverizes, and sieve out of the ordinary was got 200 eye mesh screens and made blue algae bloom activated char.
Embodiment 3:
With dewatering down at 110 ℃ in the blue-green alga bloom algae mud microwave sample dissolving stove, drying, in electric furnace, heat to 400 ℃, to be heated 1.5 hours, other step makes blue algae bloom activated char with embodiment 1.
Embodiment 4:
Blue-green alga bloom algae mud in 105 ℃ of dehydrations down, oven dry, is heated in electric furnace to 600 ℃, be heated 1.0 hours, other step makes blue algae bloom activated char with embodiment 1.
Embodiment 5
Blue-green alga bloom algae mud ZnCl
2Dipping, ZnCl
2With the mass ratio of blue-green alga bloom algae mud butt be 20%, again in 105 ℃ of dehydrations, oven dry, heating is 1 hour under 500 ℃ of high temperature, cooling, the powder cash is crossed 200 eye mesh screens and is made blue algae bloom activated char.
Embodiment 6:
Blue-green alga bloom algae mud ZnCl
2Dipping, ZnCl
2With the mass ratio of blue-green alga bloom algae mud butt be 100%, other step is made blue algae bloom activated char with embodiment 5.
Embodiment 7
Blue-green alga bloom algae mud ZnCl
2Dipping, ZnCl
2With the mass ratio of blue-green alga bloom algae mud butt be 100%, other step is made blue algae bloom activated char with embodiment 5.
The various blue algae bloom activated char samples of above-mentioned preparation are lighter, and granularity is 0.074mm, and iodine sorption value is 966mg/g, and the methylene blue decolorizing ability is 115mg/g, show that the blue algae bloom activated char of preparation has good Properties of Activated Carbon.
Claims (1)
1. the preparation method of a blue algae bloom activated char is characterized in that being made up of following steps:
(1) adopt flocculence to collect blue-green alga bloom, preparation algae mud;
(2) blue-green alga bloom algae mud ZnCl
2Dipping, ZnCl
2With the mass ratio of blue-green alga bloom algae mud butt be 20～150%;
(3) above-mentioned blue-green alga bloom algae mud is in 100～110 ℃ of dehydrations down, oven dry;
(4) with the blue-green alga bloom algae mud of oven dry under anoxic condition, 250 ℃～600 ℃ pyroprocessing 0.5～2 hour, cooling promptly got blue algae bloom activated char.
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| CN101298327B true CN101298327B (en) | 2011-03-16 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891188B (en) * | 2010-03-22 | 2012-06-27 | 中国科学院等离子体物理研究所 | Method for preparing nano active carbon spheres by using blue-green algae residue |
| CN103086352B (en) * | 2013-01-09 | 2015-01-14 | 上海交通大学 | Preparation method for graphitized porous carbon for supercapacitor |
| CN103408011B (en) * | 2013-07-25 | 2015-11-11 | 浙江工业大学 | A kind of preparation method of Sargassum horneri matrix activated carbon |
| CN103771408B (en) * | 2013-12-30 | 2015-10-28 | 上海交通大学 | Based on the preparation method of the activated carbon for super capacitors of marine alga |
| CN104138743B (en) * | 2014-07-23 | 2017-04-19 | 河海大学 | Method for preparing algae base magnetic activated carbon material and application of algae base magnetic activated carbon material |
| CN106744784B (en) * | 2015-11-18 | 2019-03-22 | 中国海洋大学 | A kind of dipping-activation method prepares the method and application thereof of nitrogen oxygen codope Enteromorpha base secondary aperture carbon material |
| CN108658071B (en) * | 2017-03-31 | 2021-02-19 | 北京化工大学 | Biomass porous carbon taking chromium skin as raw material and preparation method and application thereof |
| CN108439398A (en) * | 2018-05-30 | 2018-08-24 | 蒋春霞 | A method of preparing activated carbon using cyanobacteria |
| CN108547079B (en) * | 2018-06-08 | 2023-10-10 | 北京鹏盛天纤科技有限公司 | Green continuous production integrated device and process for absorbent cotton |
| CN109920999A (en) * | 2019-03-22 | 2019-06-21 | 广西师范大学 | A kind of cyanobacteria base anode material and preparation method thereof for lithium-sulfur cell |
| CN110272085B (en) * | 2019-07-30 | 2023-02-24 | 江南大学 | Modified blue algae biochar composite material and application thereof in treatment of electroplating wastewater |
| CN111204817B (en) * | 2020-01-15 | 2021-06-01 | 李立欣 | Magnetic composite carbon prepared from harmful algal bloom and plastic and preparation method thereof |
| CN111804273B (en) * | 2020-06-24 | 2022-07-15 | 安徽百和环保科技有限公司 | Regenerated adsorbing material and preparation method thereof |
| CN111747631A (en) * | 2020-07-14 | 2020-10-09 | 江南大学 | Method for promoting rapid dehydration of blue algae mud and preparing rod-shaped charcoal |
| CN115536448A (en) * | 2022-11-03 | 2022-12-30 | 江苏金山环保科技有限公司 | Method for preparing carbon-based fertilizer by using organic floating mud and dehydrated algae mud |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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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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