CN101992000A - Novel tannin cured chitosan heavy metal ion dynamic absorption device and preparation method thereof - Google Patents
Novel tannin cured chitosan heavy metal ion dynamic absorption device and preparation method thereof Download PDFInfo
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- CN101992000A CN101992000A CN2009100659179A CN200910065917A CN101992000A CN 101992000 A CN101992000 A CN 101992000A CN 2009100659179 A CN2009100659179 A CN 2009100659179A CN 200910065917 A CN200910065917 A CN 200910065917A CN 101992000 A CN101992000 A CN 101992000A
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Abstract
The invention particularly relates to a novel tannin cured chitosan heavy metal ion dynamic absorption device and a preparation method thereof. The device comprises a casing (1), wherein two ends of the casing (1) are respectively provided with an inlet (2) and an outlet (3), the inner part of the casing (1) is filled with a novel tannin cured chitosan heavy metal ion absorbing agent (4) from bottom to top, and the inlet (2) and the outlet (3) of the casing (1) are respectively closed and provided with permeable materials (5 and 6). The preparation method of the device comprises the steps of: weighting the prepared novel tannin cured chitosan heavy metal ion dynamic absorbing agent, and loading into an inner cavity of the inner part of the casing (1) from bottom to top; filling up and making the novel tannin cured chitosan heavy metal ion dynamic absorbing agent even, tamping to ensure that the novel tannin cured chitosan heavy metal ion dynamic absorbing agent is loosened uniformly; and respectively closing the inlet (2) and the outlet (3) of the casing (1) by using the permeable materials (5 and 6). The device can be circularly used for at least more than 200 times, has the service life of reaching at least 6 months, can be used for treating heavy metal ion sewage, enriching the trace heavy metal ions and recycling the precious heavy metal ions, and has low cost.
Description
Technical field
The present invention relates to a kind of novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices and preparation method thereof.
Background technology
Shitosan is chitin hydrolysis and slough the derivative that generates behind the part acetyl group under alkali condition, has another name called chitin, glycosaminoglycan, chitose etc., and chemical name is β-(1 → 4)-2-amino-2-deoxy-D-glucose.At occurring in nature, about 10,000,000,000 tons of the year biosynthesis amount of chitin is the second largest organic resource except that cellulose on the earth, is the huge resource treasure-house that the mankind make full use of.Therefore, the source of shitosan is quite abundant.The coordination of shitosan and derivative thereof and metal ion mainly is to exist in the strand functional groups such as a large amount of hydroxyls, amino, can have similar cancellated cage type molecule by hydrogen bond and ionic bond formation, thereby metal ion is had stable coordination.Therefore, shitosan can be used as the pregnant solution of metal ion, removes heavy metal ion poisonous in the industrial wastewater effectively, also can reclaim some precious metal ions.In recent years, international advanced water treatment agent is just trending towards pollution-free industry direction high-effect, nuisanceless, multi-functional, compoundization and is developing.Shitosan and derivative thereof, obtain paying much attention to and broad research in water treatment field because of characteristics such as its wide material sources, nontoxic, easy degraded, easy recovery as a kind of adsorbent of natural macromolecular material, develop very fast.Compare with ion exchange resin with active carbon.Shitosan has advantages such as aboundresources, absorption property height, easily regeneration, easily biological-degradable; Have also simultaneously that porosity is low, specific area is little, be subjected to shortcomings such as pH value influences greatly.At present, can adopt methods such as crosslinked, crosslinked template, carboxy methylation, Schiff alkalization that shitosan is carried out modification, it is inner or surperficial functional group of different nature can be introduced chitosan molecule.Shitosan after the modification is used for adsorbing metal ions, has that adsorption capacity is big, adsorption rate is fast, and present research still rests on the applied basic research stage.One of problem that exists, the sorbent circulation number of times is low, adsorbent cost costliness; Two of existing problems, all research adsorption/desorption researchs are all finished under static state, lack Study on dynamic adsorption.And the device of industrial treatment sewage is all finished under dynamically, therefore needs preparation novel chitosan heavy metal ion Dynamic gas-mixing and adsorption devices.
Summary of the invention
For overcoming the deficiencies in the prior art part, the object of the present invention is to provide a kind of novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices and preparation method thereof.
For achieving the above object, the technical scheme that the present invention takes is as follows: described device comprises a shell, the shell two ends are respectively arranged with entrance and exit, the inside of shell is filled with tannic acid from bottom to top and solidifies chitosan adsorbent for heavy metal, and the entrance and exit end of shell seals respectively and is provided with water-permeable sub-stances.
Shell is metal shell or non-metal shell.
Being shaped as of shell is cylindrical, square column type or plate shaped.
A kind of method for preparing aforesaid novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices: take by weighing the dynamic adsorbent of novel tannic acid solidifying shell glycan heavy metal ion that has prepared, and it is encased in the internal cavities of a shell from bottom to top, tannic acid is solidified chitosan adsorbent for heavy metal to be filled and led up, tamps, make it evenly loose, the entrance and exit end of shell seals with mineral wool respectively.
With respect to prior art, the invention has the advantages that:
(1), the novel tannic acid curing of the present invention chitosan adsorbent for heavy metal Adsorption of Heavy Metal Ions Dynamic gas-mixing and adsorption devices can be finished absorption and desorption fast under flowing;
(2), the novel tannic acid of the present invention solidifies the chitosan adsorbent for heavy metal Dynamic gas-mixing and adsorption devices, the heavy metal ion desorption is easy, desorbing agent, consumption is very little, reduces secondary pollution, significantly reduces wash-out expense and post processing expense;
(3), with novel tannic acid solidifying shell glycan heavy metal of the present invention when Dynamic gas-mixing and adsorption devices is adsorbed, the adsorption/desorption cycle-index is many, more than at least 200 times;
(4), handle industrial effluent containing heavy metal ions, with low cost with novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices of the present invention.
Description of drawings
Fig. 1: cylindrical tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices of the present invention;
Fig. 2: square column type tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices of the present invention;
Fig. 3: plate shaped tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices of the present invention;
Fig. 4: the novel tannic acid solidifying shell of the present invention glycan heavy metal ion Dynamic gas-mixing and adsorption devices is to Cd
2+Adsorption curve;
Fig. 5: the novel tannic acid solidifying shell of the present invention glycan heavy metal ion Dynamic gas-mixing and adsorption devices is to Cd
2+Elution curve.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing, but protection scope of the present invention is not limited thereto:
Of the present invention cylindrical, square column type as shown in Figure 1, 2, 3 or plate shaped tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices: described device comprises a shell (1), shell (1) two ends are respectively arranged with inlet (2) and outlet (3), the internal cavities of shell (1) is filled with tannic acid from bottom to top and solidifies chitosan adsorbent for heavy metal (4), and the inlet (2) of shell (1) and outlet (3) end sealing respectively are provided with water-permeable sub-stances (5) (6).
The preparation process of novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices is as follows:
Take by weighing the novel tannic acid solidifying shell glycan 1.0g (dry state) that prepared as adsorbent for heavy metal (4), and it is encased in the shell (1) from bottom to top, beaing shell (1) gently fills and leads up the novel tannic acid curing chitosan adsorbent for heavy metal of filler (4), tamp, make it evenly loose, packed height is about 1cm, shell (1) two ends are set to inlet (2) and outlet (3) respectively, and use mineral wool (5), (6) filling sealing promptly to get adsorbent equipment of the present invention respectively; Washing: use front casing (1) inner with distilled water, HCl (aq, 0.1mol/L), NaHCO
3(aq, pH=7-8), distilled water cleans to pH=6-7; Preserve: when adsorbent equipment is not worked, it is kept in pH=6-7, humidity, the low temperature environment.
Before using,, cleans to neutral with distilled water again adsorbent equipment earlier with HCl (aq), 0.1NaOHmol/L (aq) immersion of 0.1mol/L.
Adsorption experiment:
Accurately pipette Cd
2+Solution 100ml, concentration is respectively 0.2,0.4,0.6,0.8,1.0mmol/L, pH=6, flow velocity with 4mL/min is crossed adsorbent equipment, the result is as shown in Figure 4: as can be seen from Figure 4, the novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices of preparation is Adsorption of Heavy Metal Ions rapidly and efficiently.
The desorption experiment:
Choose the Cd of 0.6mmol/L
2+Solution, concentration of hydrochloric acid is respectively 0.0001,0.005,0.01,0.05,0.1mol/L, pipette 5mL, flow velocity with 2mL/min, the wash-out result is as shown in Figure 5: as can be seen from Figure 5, elute with seldom measuring the heavy metal ion that watery hydrochloric acid just can will be adsorbed on the novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices of preparation.
Claims (5)
1. novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices, it is characterized in that: described device comprises a shell (1), shell (1) two ends are respectively arranged with inlet (2) and outlet (3), the inside of shell (1) is filled with novel tannic acid from bottom to top and solidifies chitosan adsorbent for heavy metal (4), and inlet of shell (2) and outlet (3) end sealing respectively are provided with water-permeable sub-stances (5) (6).
2. require described novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices according to right 1, it is characterized in that: shell is metal shell or non-metal shell.
3. require the novel tannic acid solidifying shell of described kind glycan heavy metal ion Dynamic gas-mixing and adsorption devices according to right 2, it is characterized in that: being shaped as of shell is cylindrical, square column type or plate shaped.
4. one kind prepares the method that requires described novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices according to right 1, it is characterized in that: take by weighing the dynamic adsorbent of novel tannic acid solidifying shell glycan heavy metal ion that has prepared, and it is encased in the internal cavities of a shell from bottom to top, novel tannic acid is solidified chitosan adsorbent for heavy metal to be filled and led up, tamps, make it evenly loose, the entrance and exit end of shell is respectively with permeable type material sealing.
5. require described novel tannic acid solidifying shell glycan heavy metal ion Dynamic gas-mixing and adsorption devices according to right 1, its permeable sexual type material comprises mineral wool, tunica fibrosa, nylon membrane etc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100659179A CN101992000A (en) | 2009-08-25 | 2009-08-25 | Novel tannin cured chitosan heavy metal ion dynamic absorption device and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100659179A CN101992000A (en) | 2009-08-25 | 2009-08-25 | Novel tannin cured chitosan heavy metal ion dynamic absorption device and preparation method thereof |
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| CN101992000A true CN101992000A (en) | 2011-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360659A (en) * | 2011-06-24 | 2012-02-22 | 中国科学院宁波材料技术与工程研究所 | Magnetic submicron composite core-shell particles, and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5753345A (en) * | 1995-05-11 | 1998-05-19 | Kabushiki Kaisha Seibu Giken | Adsorber for humidity and odorous gas exchange |
| CN201180119Y (en) * | 2008-02-01 | 2009-01-14 | 上海赛科石油化工有限责任公司 | Adsorption plant for removing peroxide in vinyl cyanide product |
| CN201288103Y (en) * | 2008-11-10 | 2009-08-12 | 郑州大学 | Industrial waste water treatment apparatus |
-
2009
- 2009-08-25 CN CN2009100659179A patent/CN101992000A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5753345A (en) * | 1995-05-11 | 1998-05-19 | Kabushiki Kaisha Seibu Giken | Adsorber for humidity and odorous gas exchange |
| CN201180119Y (en) * | 2008-02-01 | 2009-01-14 | 上海赛科石油化工有限责任公司 | Adsorption plant for removing peroxide in vinyl cyanide product |
| CN201288103Y (en) * | 2008-11-10 | 2009-08-12 | 郑州大学 | Industrial waste water treatment apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 晓玲等: "壳聚糖固化单宁微球的制备及其吸附性能", 《精细化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360659A (en) * | 2011-06-24 | 2012-02-22 | 中国科学院宁波材料技术与工程研究所 | Magnetic submicron composite core-shell particles, and preparation method and application thereof |
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Application publication date: 20110330 |