CN103551119A - Oyster shell heavy metal ions absorbent and preparation method thereof - Google Patents
Oyster shell heavy metal ions absorbent and preparation method thereof Download PDFInfo
- Publication number
- CN103551119A CN103551119A CN201310546549.6A CN201310546549A CN103551119A CN 103551119 A CN103551119 A CN 103551119A CN 201310546549 A CN201310546549 A CN 201310546549A CN 103551119 A CN103551119 A CN 103551119A
- Authority
- CN
- China
- Prior art keywords
- oyster shell
- heavy metal
- powder
- oyster
- absorbent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to an oyster shell heavy metal ions absorbent, and a preparation method of the absorbent is characterized by comprising the following steps: grinding oyster shell into powder, screening through a 100-mesh sieve, adding a 0.4% SDS (sodium dodecyl sulfate) solution to modify, filtering and drying, compounding and uniformly mixing the modified oyster shell powder with bentonite in a weight ratio of 2: 1, extruding, pelleting, rolling and calcining to obtain a spherical particle compound heavy metal ions absorbent.
Description
Technical field
The present invention relates to a kind of aquatic products processing accessory substance intensive processing technology, development of new water quality heavy metal absorbent and preparation method thereof.
Background technology
China's shellfish annual production accounts for the more than 60% of world wide production, ranks first in the world.These Mollusca Resources, when driving coastal economy fast development, also inevitably produce a large amount of discarded shells, and these discarded shell resources, as not in addition fine utilization, also can be brought a large amount of solid waste, and environment is produced to harmful effect.
Oyster has two shells in left and right, and right shell deserves to be called again shell, and left shell claims again lower casing.Oyster shell is divided into 3 layers according to the mode forming and the difference of institutional framework: outermost one deck is cuticula or cortex (periostracum), has comprised conchiolin, and the corrosion of chemistry article has stronger resistance to external world; Centre is prismatic layer (prismatic layer), consists of, containing the hole of a large amount of 2-10 μ m the calcareous deposit of polygonal rib shape crystallization; Internal layer is nacre (pearl layer), mainly calcite, consists of, can progressive additive, and along with the increase at oyster age, the level of nacre also can be more.Oyster shell is owing to having special physique, its inside has the numerous duct interconnecting, containing a large amount of 2-10 μ m micropores, treatedly produce multiple difference in functionality opening structure, make it there is the effects such as stronger adsorption capacity, exchange capacity and catalytic decomposition, can adsorb well the heavy metal in breeding water, the compositions such as organophosphor have good water quality clarification simultaneously.Approximately 1,000,000 tons of discarded oyster shells of the annual generation of coastal area of china, the raw material of these " accumulation is caused disaster " have been brought up cheap property, the exploitability of product cost, have the powerful market competitiveness.With oyster shell powder, process breeding water, allow oyster shell turn waste into wealth, can effectively improve culture environment of aquatic products, increase fish food security.With oyster shell powder, processing breeding water is a kind of simple to operate, few treatment technology of injecting capital into, adopt this technology to process breeding water to there is efficient low-consume, the advantage of non-secondary pollution, the content that effectively reduces the pollutants such as heavy metal, nitrogen phosphorus in aquaculture water, improves culture environment of aquatic products.Use at present the research of the method processing breeding water also fewer, the space that tool is wide and good prospect.
Summary of the invention
The present invention relates to a kind of oyster shell Compound Heavy Metals adsorbent, it is characterized in that: by oyster shell abrasive dust, cross 100 mesh sieves, add 0.4%SDS solution to carry out modification, after filtering drying, modified oyster powder and bentonite are carried out to composite mixing with the ratio of weight ratio 2:1, carry out extruder grain, round as a ball, calcining acquisition spheric granules Compound Heavy Metals adsorbent.
The technical problem to be solved in the present invention is the product form that enhancing oyster shell heavy metal adsorption efficiency and exploitation are easy to application.This preparation method's integrated application sodium cetanesulfonate (SDS) carry out modification, with bentonite carry out composite, three kinds of methods of high-temperature calcination, effectively improve the heavy metal adsorption of oyster shell powder; And applying bentonitic viscous characteristics, adopt extruder grain, round as a ball and method for calcinating, prepare microspheric form granule adsorbent, is that this adsorbent is easy to transportation, stores and use.The method technique is simple, with low cost, has good application.
The method that the present invention prepares the heavy metal absorbent of novel oyster shell mainly contains following steps.
1, oyster shell is pulverized: oyster shell removal of impurities is cleaned, is dried, is pulverized, cross 100 mesh sieves, obtain oyster shell powder.
2, oyster shell modification: take oyster shell powder, the concentration that adds 2 times of volumes is 0.4% sodium cetanesulfonate (SDS) solution, stirs 2 h under 60 ℃ of constant temperature, filters, and dries at 60 ℃, pulverizes 100 mesh sieves, and dry sealing is standby.
3, composite: modified oyster powder and bentonite are carried out to composite mixing with the ratio of weight ratio 2:1.
4, moulding: by composite raw material poach, carry out extruder grain, round as a ball, obtain particle diameter 4-6 mm spheric granules.
5, calcining: will spherical granular bead and 550-600 ℃ calcine 2 h, take out coolingly, pack, be oyster shell heavy metal absorbent.
Oyster shell water quality heavy metal absorbent provided by the invention has following features.
1, to Cu
2+, Zn
2+, Pb
2+, Cd
2+, the heavy metal such as Cr (VI) has good suction-operated.
2, spherical absorption bead have good fluidity, easily packing, easily store, easily transportation, not breakable feature.
3, this improver of water quality is with low cost, and preparation method is simple, respond well, and can not produce secondary pollution in use.
The specific embodiment
For the ease of understanding the present invention, spy enumerates embodiment, further to annotate the present invention, rather than the restriction to any mode of the present invention.
1, oyster shell powder preparation: after 120 kg oyster shells are cleaned, are dried, pulverize with Universalpulverizer, sieve with 100 mesh sieves, obtain 100 kg oyster shell powder.
2, oyster shell powder modification: 100kg oyster shell powder is packed in blend tank, add 60 ℃ of preheating 0.4% sodium cetanesulfonates (SDS) 200L, 60 ℃ of constant temperature at the uniform velocity stir after 2 h, plate-frame filtering dewaters, obtain modified oyster powder, by modified oyster powder 60 ℃ of oven dry in baking oven, Universalpulverizer is pulverized, and obtains modified oyster powder.
3, composite: in mixing machine, add 100 kg modified oyster powders, 50 kg bentonites, fully stir 30 min, and two samples are fully mixed.
4, moulding: add water 30 kg in the composite powder mixing, stir, composite raw material is added to water and be kneaded into bulk; put in Squeezinggranulator and carry out granulation, carry out extruder grain, granulation particle diameter 4-6 mm; transfer of granules, to round as a ball on spheronizator, is obtained to particle diameter 4-6 mm spheric granules.
5, calcining: in Muffle furnace, temperature adjustment, to 550-600 ℃ of calcining 2 h, is taken out coolingly by spherical granular bead, packs, acquisition oyster shell heavy metal absorbent product.This bead is carried out to heavy metal adsorption test, and result shows, the Cu of absorption bead
2+, Zn
2+, Pb
2+, Cd
2+, Cr (VI) adsorption rate is respectively 96.12%, 87.32%, 85.31%, 88.32%, 88.44%.
Claims (3)
1. the present invention relates to a kind of oyster shell heavy metal absorbent and preparation method thereof, it is characterized in that: oyster shell powder is carried out to modification, and carry out compositely with bentonite, carry out extruder grain, round as a ball, calcining, obtains particle diameter 4-6 mm form of spherical particles heavy metal absorbent.
2. in claim 1, oyster shell method of modifying, is characterized by: the concentration that adds 2 times of volumes is that 0.4% sodium cetanesulfonate (SDS) solution and oyster shell powder fully stir, under 60 ℃ of constant temperature, stir 2 h, filter at latter 60 ℃ and dry, pulverize, be modified oyster powder.
3. in claim 1, modified oyster powder and bentonite carry out composite, it is characterized by: modified oyster powder and bentonite fully mix with the ratio of weight ratio 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310546549.6A CN103551119A (en) | 2013-11-07 | 2013-11-07 | Oyster shell heavy metal ions absorbent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310546549.6A CN103551119A (en) | 2013-11-07 | 2013-11-07 | Oyster shell heavy metal ions absorbent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103551119A true CN103551119A (en) | 2014-02-05 |
Family
ID=50005576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310546549.6A Pending CN103551119A (en) | 2013-11-07 | 2013-11-07 | Oyster shell heavy metal ions absorbent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103551119A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043392A (en) * | 2014-06-24 | 2014-09-17 | 广西大学 | Method for producing modified bentonite absorbing agent by utilizing SDS (Sodium Dodecyl Sulfate) roasting |
| CN104386776A (en) * | 2014-10-31 | 2015-03-04 | 田琳琳 | Composite material for purifying water |
| CN105502621A (en) * | 2014-09-22 | 2016-04-20 | 上海市南洋模范中学 | Method for clearing copper ions in water by using cuttlefish shell |
| CN106867541A (en) * | 2017-02-23 | 2017-06-20 | 福建省玛塔农业发展有限公司 | A kind of environment-friendly type heavy metal renovation agent and its application and slow release heavy metal remediation fertilizer |
| CN107442075A (en) * | 2017-09-14 | 2017-12-08 | 鲁东大学 | A kind of oyster shell adsorbent its preparation method and its application |
| CN112591843A (en) * | 2020-12-26 | 2021-04-02 | 昆明理工大学 | Method for treating heavy metal-containing acidic wastewater by using waste |
| CN113881249A (en) * | 2021-11-24 | 2022-01-04 | 吴振清 | Oyster shell powder composite filler with super-hydrophobicity and preparation method thereof |
-
2013
- 2013-11-07 CN CN201310546549.6A patent/CN103551119A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 林荣晓等: "牡蛎壳粉对水体中低浓度重金属离子的吸附性能研究", 《福建水产》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043392A (en) * | 2014-06-24 | 2014-09-17 | 广西大学 | Method for producing modified bentonite absorbing agent by utilizing SDS (Sodium Dodecyl Sulfate) roasting |
| CN104043392B (en) * | 2014-06-24 | 2016-02-24 | 广西大学 | A kind of method utilizing SDS baked for producing modified bentonite adsorbent |
| CN105502621A (en) * | 2014-09-22 | 2016-04-20 | 上海市南洋模范中学 | Method for clearing copper ions in water by using cuttlefish shell |
| CN104386776A (en) * | 2014-10-31 | 2015-03-04 | 田琳琳 | Composite material for purifying water |
| CN106867541A (en) * | 2017-02-23 | 2017-06-20 | 福建省玛塔农业发展有限公司 | A kind of environment-friendly type heavy metal renovation agent and its application and slow release heavy metal remediation fertilizer |
| CN107442075A (en) * | 2017-09-14 | 2017-12-08 | 鲁东大学 | A kind of oyster shell adsorbent its preparation method and its application |
| CN112591843A (en) * | 2020-12-26 | 2021-04-02 | 昆明理工大学 | Method for treating heavy metal-containing acidic wastewater by using waste |
| CN113881249A (en) * | 2021-11-24 | 2022-01-04 | 吴振清 | Oyster shell powder composite filler with super-hydrophobicity and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103551119A (en) | Oyster shell heavy metal ions absorbent and preparation method thereof | |
| JPS58214338A (en) | Composite adsorbent | |
| CN101628222B (en) | Filtering medium for removing micro radioactive substances in water and preparation method thereof | |
| JP2010001460A5 (en) | ||
| CN103816859A (en) | Preparation method of betaine-modified attapulgite | |
| CN108311117A (en) | A kind of magnetic bio Carbon Materials and preparation method thereof for heavy metal containing wastewater treatment | |
| CN104289195A (en) | Activated carbon diatomite particles with well-developed pores and low cost and method for preparing activated carbon diatomite particles with well-developed pores and low cost. | |
| CN105642235B (en) | A method of removing heavy metal using activation oyster shell powder | |
| CN101637715B (en) | Filter medium for removing diethylstilbestrol in water and preparation method thereof | |
| CN104307493A (en) | Solid and durable activated carbon diatomite particles for desulfurization and dust removal and preparation method thereof | |
| CN111036170B (en) | Water purification sludge composite adsorbent and application thereof | |
| CN102652913A (en) | Spherical MnO2/Al2O3 and oil column molding preparation method thereof | |
| CN104998624A (en) | Dephosphorization absorbent granulation method | |
| CN101992061B (en) | Filter medium for removing perfluorooctane sulfonate from water and preparation method thereof | |
| CN103084221B (en) | Method for improving ion-exchange capacity and efficiency of natural zeolite | |
| CN102423572A (en) | Filter medium for removing uranium in drinking water and preparation method thereof | |
| CN106431347A (en) | Production method of multifunctional quincuncial slag light through-hole ceramsite | |
| CN106431369A (en) | Production method of multifunctional quincuncial tourmaline light through-hole ceramsite | |
| CN109865502A (en) | Modified water treatment agent of a kind of oyster shell powder and its preparation method and application | |
| CN106631091A (en) | Production method of multifunctional quincunx-shaped bentonite tailing lightweight through hole ceramsite | |
| RU2501602C2 (en) | Composition for production of complex granulated nano-sorbent | |
| CN117138743A (en) | Montmorillonite mycotoxin adsorbent, and preparation method and application thereof | |
| CN106431320A (en) | Production method of multifunctional quincuncial flue gas desulfurization gypsum light through-hole ceramsite | |
| CN105536693B (en) | Adsorbent and preparation method thereof | |
| CN106431240A (en) | Production method of multifunctional plum-blossom-shaped lightweight through-hole ceramsite containing pyrophyllite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140205 |