CN105251461A - Efficient and reusable radioactive waste water treatment adsorbent based on modified bone meal and preparation method - Google Patents
Efficient and reusable radioactive waste water treatment adsorbent based on modified bone meal and preparation method Download PDFInfo
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- CN105251461A CN105251461A CN201510764106.3A CN201510764106A CN105251461A CN 105251461 A CN105251461 A CN 105251461A CN 201510764106 A CN201510764106 A CN 201510764106A CN 105251461 A CN105251461 A CN 105251461A
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Abstract
The invention discloses efficient and reusable radioactive waste water treatment adsorbent based on modified bone meal and a preparation method. A composition of the adsorbent is prepared from, by weight, 50-60 parts of pig bones, 70-80 parts of oyster shells, 5-7 parts of chitosan, 11-13 parts of carbon nano-tubes, 10-12 parts of medium silicon dioxide powder, 30-40 parts of polymerized ferro-aluminium silicate, 10-20 parts of hexadecyl trimethyl ammonium bromide, 10-20 parts of hydrophile polyurethane-polyurea resin, 9-15 parts of sequester resin, 4-6 parts of sodium polyacrylate, 3-5 parts of potassium polyacrylate, 4-6 parts of calcium oxide, an appropriate amount of deionized water, 4-5 parts of acetic acid and an appropriate amount of water. According to the efficient and reusable radioactive waste water treatment adsorbent based on the modified bone meal and the preparation method, composite powder of the oyster shells and the pig bones is adopted, firstly, stem grafting is conducted on the composite powder through chitosan for enriching adsorption sites of the composite powder, then further modification and reinforcement are conducted through substances which are resistant to heat and stable and have multiple adsorption sites, namely the carbon nano-tubes, the medium silicon dioxide powder and the polymerized ferro-aluminium silicate, bonding is conducted through the resin, and a radioactive waste water treatment agent which is stable, not prone to degrading, good in adsorptive property and leaching resistant is produced out.
Description
Technical field
The invention belongs to Spent Radioactive water treatment field, specifically relate to a kind of Spent Radioactive water treatment adsorbent that efficiently can reuse based on modification bone meal and preparation method.
Background technology
Along with the exhaustion day by day of fossil resources, greatly developing nuclear energy has been inexorable trend, nuclear energy resource inevitably has waste water and produces when exploitation, pollution of ecological environment that can be serious, novel absorption material is considered to a kind of effective method in the improvement of radioactive wastewater, Developing Biomass sorbing material is the focus of research at present, bone meal is as the one of biological material, it is a kind of porous mass of stratiform, there is larger specific area, be well suited for doing sorbing material, with research surface, when bone meal is used for radioactive wastewater sorbing material, there is very high adsorption efficiency, mainly must come from the main component hydroxy phosphorus Calx of bone meal, but there is the defect and deficiency that cannot reuse.Mainly because the desorption process of radioactive element, needs by hydrochloric acid solution, and now, bone meal can dissolve disengaging in strong acidic environment, recycling cannot be realized.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of Spent Radioactive water treatment adsorbent that efficiently can reuse based on modification bone meal and preparation method.
For achieving the above object, the technical solution used in the present invention is:
A kind of Spent Radioactive water treatment adsorbent that efficiently can reuse based on modification bone meal, it is characterized in that, said composition comprises the raw material by following weight portion: pig bone 50-60, oyster shell 70-80, silicon magnesium glue, shitosan 5-7, CNT 11-13, medium silicon-dioxide powdery 10-12, polymeric aluminium ferrum silicate 30-40, softex kw, hydrophilic polyurethane-carbamide resin 10-20, sequestration resin 9-15, Sodium Polyacrylate 4-6, polyacrylic acid potassium 3-5, calcium oxide 4-6, appropriate deionized water, acetic acid 4-5, appropriate water.
Based on a preparation method for the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, it is characterized in that, comprise the following steps:
(1) pig bone, oyster shell, calcium oxide are mixed and add gross weight 2-3 deionized water doubly, 100 DEG C are boiled 20-30min, pull clear water out and rinse 2-3 time, dry in the air to drying, put into pulverizer and pulverize 40-50min, cross 50 orders, obtain thick bone composite powder for subsequent use;
(2) shitosan, acetic acid and gross weight 12-16 deionized water are mixed, the chitosan solution stirred, thick bone composite powder is calcined 1-1.5h at high temperature 1000 DEG C, be cooled to 100 DEG C, chitosan solution is added afterwards at 100 DEG C, and stir, it is for subsequent use that the 4-5h of 100 DEG C of Keep agitation heating afterwards obtains chitosan graft modification bone meal;
(3) by CNT, medium silicon-dioxide powdery, polymeric aluminium ferrum silicate mixing, and add Sodium Polyacrylate, polyacrylic acid potassium and gross weight 1-2 deionized water doubly add thermal agitation 10-12h at 200 DEG C, many adsorption sites complexing agent is for subsequent use;
(4) hydrophilic polyurethane-carbamide resin, sequestration resin are heated 2-3h at being blended in 1000 DEG C; in heating process, first add many adsorption sites complexing agent mix and blend stir; add chitosan graft modification bone meal mixing and stirring afterwards; stir under nitrogen atmosphere and cool gradually; and pass through granulator granulation; form the particle of the many adsorption sites of porous, to obtain final product.
Beneficial effect of the present invention:
The present invention adopts the compound of oyster shell and pig bone multiple, first by shitosan, grafting is carried out to it and enrich its adsorption site, strengthening is modified further at the material by CNT, medium silicon-dioxide powdery, these Heat-resistant stable of polymeric aluminium ferrum silicate with many adsorption sites, and combined by resin, manufactured stable, not easily decompose but absorption property good, the Spent Radioactive water treatment agent of anti-leaching.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
Embodiment 1:
Based on the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, said composition comprises the raw material by following weight (kg): pig bone 50, oyster shell 70, shitosan 5, CNT 13, medium silicon-dioxide powdery 12, polymeric aluminium ferrum silicate 40, hydrophilic polyurethane-carbamide resin 10, sequestration resin 9, Sodium Polyacrylate 6, polyacrylic acid potassium 5, calcium oxide 4, appropriate deionized water, acetic acid 4, appropriate water.
Based on a preparation method for the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, comprise the following steps:
(1) pig bone, oyster shell, calcium oxide are mixed and add the deionized water of gross weight 2.5 times, 100 DEG C are boiled 25min, pull clear water out and rinse 2.5 times, dry in the air to drying, put into pulverizer and pulverize 45min, cross 50 orders, obtain thick bone composite powder for subsequent use;
(2) by shitosan, acetic acid and gross weight 14 deionized water mixing, the chitosan solution stirred, thick bone composite powder is calcined 1.25h at high temperature 1000 DEG C, be cooled to 100 DEG C, chitosan solution is added afterwards at 100 DEG C, and stir, it is for subsequent use that the 4.5h of 100 DEG C of Keep agitation heating afterwards obtains chitosan graft modification bone meal;
(3) by CNT, medium silicon-dioxide powdery, polymeric aluminium ferrum silicate mixing, and the deionized water adding Sodium Polyacrylate, polyacrylic acid potassium and gross weight 1.5 times adds thermal agitation 11h at 200 DEG C, many adsorption sites complexing agent is for subsequent use;
(4) hydrophilic polyurethane-carbamide resin, sequestration resin are heated 2.5h at being blended in 1000 DEG C; in heating process, first add many adsorption sites complexing agent mix and blend stir; add chitosan graft modification bone meal mixing and stirring afterwards; stir under nitrogen atmosphere and cool gradually; and pass through granulator granulation; form the particle of the many adsorption sites of porous, to obtain final product.
Embodiment 2:
Based on the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, said composition comprises the raw material by following weight (kg): pig bone 60, oyster shell 80, shitosan 7, CNT 11, medium silicon-dioxide powdery 10, polymeric aluminium ferrum silicate 30, hydrophilic polyurethane-carbamide resin 15, sequestration resin 12, Sodium Polyacrylate 4, polyacrylic acid potassium 3, calcium oxide 6, appropriate deionized water, acetic acid 5, appropriate water.
Based on a preparation method for the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, comprise the following steps:
(1) pig bone, oyster shell, calcium oxide are mixed and add the deionized water of gross weight 2.5 times, 100 DEG C are boiled 25min, pull clear water out and rinse 2.5 times, dry in the air to drying, put into pulverizer and pulverize 45min, cross 50 orders, obtain thick bone composite powder for subsequent use;
(2) by shitosan, acetic acid and gross weight 14 deionized water mixing, the chitosan solution stirred, thick bone composite powder is calcined 1.25h at high temperature 1000 DEG C, be cooled to 100 DEG C, chitosan solution is added afterwards at 100 DEG C, and stir, it is for subsequent use that the 4.5h of 100 DEG C of Keep agitation heating afterwards obtains chitosan graft modification bone meal;
(3) by CNT, medium silicon-dioxide powdery, polymeric aluminium ferrum silicate mixing, and the deionized water adding Sodium Polyacrylate, polyacrylic acid potassium and gross weight 1.5 times adds thermal agitation 11h at 200 DEG C, many adsorption sites complexing agent is for subsequent use;
(4) hydrophilic polyurethane-carbamide resin, sequestration resin are heated 2.5h at being blended in 1000 DEG C; in heating process, first add many adsorption sites complexing agent mix and blend stir; add chitosan graft modification bone meal mixing and stirring afterwards; stir under nitrogen atmosphere and cool gradually; and pass through granulator granulation; form the particle of the many adsorption sites of porous, to obtain final product.
Embodiment 3:
Based on the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, said composition comprises the raw material by following weight (kg): pig bone 55, oyster shell 75, shitosan 6, CNT 12, medium silicon-dioxide powdery 11, polymeric aluminium ferrum silicate 35, hydrophilic polyurethane-carbamide resin 15, sequestration resin 12, Sodium Polyacrylate 5, polyacrylic acid potassium 4, calcium oxide 5, appropriate deionized water, acetic acid 4.5, appropriate water.
Based on a preparation method for the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, comprise the following steps:
(1) pig bone, oyster shell, calcium oxide are mixed and add the deionized water of gross weight 2.5 times, 100 DEG C are boiled 25min, pull clear water out and rinse 2.5 times, dry in the air to drying, put into pulverizer and pulverize 45min, cross 50 orders, obtain thick bone composite powder for subsequent use;
(2) by shitosan, acetic acid and gross weight 14 deionized water mixing, the chitosan solution stirred, thick bone composite powder is calcined 1.25h at high temperature 1000 DEG C, be cooled to 100 DEG C, chitosan solution is added afterwards at 100 DEG C, and stir, it is for subsequent use that the 4.5h of 100 DEG C of Keep agitation heating afterwards obtains chitosan graft modification bone meal;
(3) by CNT, medium silicon-dioxide powdery, polymeric aluminium ferrum silicate mixing, and the deionized water adding Sodium Polyacrylate, polyacrylic acid potassium and gross weight 1.5 times adds thermal agitation 11h at 200 DEG C, many adsorption sites complexing agent is for subsequent use;
(4) hydrophilic polyurethane-carbamide resin, sequestration resin are heated 2.5h at being blended in 1000 DEG C; in heating process, first add many adsorption sites complexing agent mix and blend stir; add chitosan graft modification bone meal mixing and stirring afterwards; stir under nitrogen atmosphere and cool gradually; and pass through granulator granulation; form the particle of the many adsorption sites of porous, to obtain final product.
First be rich in 10%Pb with three parts of 10Kg
2+the contaminant water of emitted ions is sample water, adds 0.5Kg embodiment 1-3 respectively and prepares water treatment preparation, again measures Pb in three parts of contaminant water after 2h
2+content, calculates adsorption rate, is being rich in 10%Pb with three parts of 10Kg
2+the contaminant water of emitted ions is sample water, again adds first time used water treatment preparation, again measures Pb in three parts of contaminant water after 2h
2+content, compares recycling rate of waterused, and result is as follows.
The water treatment preparation that table 1 adopts embodiment 1-3 to prepare processes three increment example water respectively, and result is as follows
As seen from the above table, although these goods have good adsorption rate conciliate adsorption rate, when second time uses, adsorption efficiency is not very high, when may be desorption, injury is to a certain degree caused to its structure and composition, so about recycling rate of waterused can only reach half.
Claims (2)
1. the Spent Radioactive water treatment adsorbent that efficiently can reuse based on modification bone meal, it is characterized in that, said composition comprises the raw material by following weight portion: pig bone 50-60, oyster shell 70-80, shitosan 5-7, CNT 11-13, medium silicon-dioxide powdery 10-12, polymeric aluminium ferrum silicate 30-40, hydrophilic polyurethane-carbamide resin 10-20, sequestration resin 9-15, Sodium Polyacrylate 4-6, polyacrylic acid potassium 3-5, calcium oxide 4-6, appropriate deionized water, acetic acid 4-5, appropriate water.
2., as claimed in claim 1 based on a preparation method for the Spent Radioactive water treatment adsorbent that efficiently can reuse of modification bone meal, it is characterized in that, comprise the following steps:
(1) pig bone, oyster shell, calcium oxide are mixed and add gross weight 2-3 deionized water doubly, 100 DEG C are boiled 20-30min, pull clear water out and rinse 2-3 time, dry in the air to drying, put into pulverizer and pulverize 40-50min, cross 50 orders, obtain thick bone composite powder for subsequent use;
(2) shitosan, acetic acid and gross weight 12-16 deionized water are mixed, the chitosan solution stirred, thick bone composite powder is calcined 1-1.5h at high temperature 1000 DEG C, be cooled to 100 DEG C, chitosan solution is added afterwards at 100 DEG C, and stir, it is for subsequent use that the 4-5h of 100 DEG C of Keep agitation heating afterwards obtains chitosan graft modification bone meal;
(3) by CNT, medium silicon-dioxide powdery, polymeric aluminium ferrum silicate mixing, and add Sodium Polyacrylate, polyacrylic acid potassium and gross weight 1-2 deionized water doubly add thermal agitation 10-12h at 200 DEG C, many adsorption sites complexing agent is for subsequent use;
(4) hydrophilic polyurethane-carbamide resin, sequestration resin are heated 2-3h at being blended in 1000 DEG C; in heating process, first add many adsorption sites complexing agent mix and blend stir; add chitosan graft modification bone meal mixing and stirring afterwards; stir under nitrogen atmosphere and cool gradually; and pass through granulator granulation; form the particle of the many adsorption sites of porous, to obtain final product.
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| CN106362704A (en) * | 2016-10-24 | 2017-02-01 | 青岛农业大学 | Compound filler for filling invisible haze-preventive masks |
| CN108126446A (en) * | 2017-12-29 | 2018-06-08 | 江山市田田设备安装有限公司 | A kind of environment-friendly highly efficient whirlwind foam dust collector |
| CN114467840A (en) * | 2022-03-16 | 2022-05-13 | 国家海洋环境监测中心 | Preparation method and device of reinforced particles for in-situ treatment of seawater pond culture tail water |
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| CN108126446B (en) * | 2017-12-29 | 2020-08-25 | 江山市田田设备安装有限公司 | Environment-friendly efficient cyclone water foam dust collector |
| CN114467840A (en) * | 2022-03-16 | 2022-05-13 | 国家海洋环境监测中心 | Preparation method and device of reinforced particles for in-situ treatment of seawater pond culture tail water |
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Application publication date: 20160120 |