CN101264437B - Rice hull adsorbent for absorbing dye and manufacturing method thereof - Google Patents
Rice hull adsorbent for absorbing dye and manufacturing method thereof Download PDFInfo
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- CN101264437B CN101264437B CN2008100961501A CN200810096150A CN101264437B CN 101264437 B CN101264437 B CN 101264437B CN 2008100961501 A CN2008100961501 A CN 2008100961501A CN 200810096150 A CN200810096150 A CN 200810096150A CN 101264437 B CN101264437 B CN 101264437B
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Abstract
The invention discloses a rice husk adsorbent for dye absorption, which is prepared by the following steps: (1) 100g rice husk is prepared, the sediment impurity is removed, and the rice husk is crushed into 20 meshes, (2) 25ml-45ml sulphuric acid with a concentration of 4.5%-8.5% (w/v) is adopted as activator, and the rice husk is activated for 45-75 min at the activation temperature of 110-150 DEG C, and (3) 20ml-50ml hydrogen peroxide with a concentration of 6.0%-18% (w/v) is adopted as oxidative activator, sulphuric acid is added to adjust pH value below 6.0, and the rice husk is activatedfor 40-80min at the activation temperature of 170-200 DEG C. The rice husk adsorbent for dye absorption has the advantages of adopting the waste rice husk as basic material, relatively ideal absorption selectivity and quantity, good absorption performance with absorption rate above 50%, and low cost.
Description
Technical field
The present invention relates to a kind of adsorbent, particularly relate to a kind of rice hull adsorbent that is used for absorbing dye.The invention still further relates to the manufacture method of this absorbing dye.
Background technology
In recent years along with the raising of the life and the level of producing, people are to the food of inlet, the requirement that is through clothing on one's body is more and more higher, it is more and more beautiful, various that people require to be through the color of clothing on one's body, but also require not only the material of clothing to want environmental protection harmless to health, and require also environmental protection of dyestuff, further for sustainable development, having proposed also has higher environmental requirement to the absorption of fuel in the dyeing waste water, also more and more exquisiter to the innoxious requirement of clothing dyestuff.Because to environmental protection requirement, make to the environmental requirement of the adsorbent of the dyestuff of dyeing also more and more higher, at present the adsorbent that uses has various material to make, but the adsorbent that uses environment-friendly materials is seldom arranged, and the manufacturing raw material that utilizes discarded rice husk to make adsorbent is still less arranged.
Summary of the invention
The present invention finishes in order to solve deficiency of the prior art, it is more satisfactory as base stock manufacturing adsorptive selectivity and adsorbance to the purpose of this invention is to provide a kind of rice husk of passing into disuse at present that uses, and absorption property is than the rice hull adsorbent that is used for absorbing dye higher, that cost is low.
A kind of rice hull adsorbent that is used for absorbing dye of the present invention, it is to make by following steps: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 25ml-45ml concentration again for use is that the sulfuric acid of 4.5%-8.5% (w/v) is as activator, activation is 45-75 minute under 110 ℃ of-150 ℃ of activation temperatures, and then to select 20ml-50ml concentration for use be that the hydrogen peroxide of 6.0%-18% (w/v) is as the oxidisability activator, add below the sulphur acid for adjusting pH value to 6.0, the back activates 40-80 minute under 170 ℃-200 ℃ activation temperature.
A kind of rice hull adsorbent that is used for absorbing dye of the present invention, in terms of existing technologies, be according to the advantage that has: because its base stock that uses is rice husk, the rice husk of passing into disuse before making has the value that makes full use of, cost of material is extremely low, and relatively environmental protection of raw material, reach more than 50% through the adsorption rate of overtesting the methylene blue solution of 0.1mg/ml, adsorbent material not only comprises the dyestuff in the dyeing waste water, also include some materials in the organic waste water, adsorbance is bigger, and adsorption effect is relatively good, and adsorption capacity is more intense.
The present invention also provides the manufacture method of the more intense rice hull adsorbent that is used for absorbing dye of advantages of good adsorption effect, the adsorption capacity of making the discarded rice husk manufacturing of above-mentioned use.
A kind of manufacture method that is used for the rice hull adsorbent of absorbing dye of the present invention, may further comprise the steps: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 25ml-45ml concentration again for use is that the sulfuric acid of 4.5%-8.5% (w/v) is as activator, activation is 45-75 minute under 110 ℃ of-150 ℃ of activation temperatures, and then to select 20ml-50ml concentration for use be that the hydrogen peroxide of 6.0%-18% (w/v) is as the oxidisability activator, add below the sulphur acid for adjusting pH value to 6.0, the back activates 40-80 minute under 170 ℃-200 ℃ activation temperature.
A kind of manufacture method that is used for the rice hull adsorbent of absorbing dye of the present invention can also be:
Use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 30ml-40ml concentration again for use is that the sulfuric acid of 7%-8% (w/v) is as activator, activation is 50-60 minute under 130 ℃ of-150 ℃ of activation temperatures, and then to select 30ml-40ml concentration for use be that the hydrogen peroxide of 10%-14% (w/v) is as the oxidisability activator, add sulfuric acid and regulate below the pH value to 3, the back activates 50-60 minute under 180 ℃-190 ℃ activation temperature.
Use pulverizer to be crushed to 20 orders after earlier will the 100g rice husk removing silt impurity, select for use 30ml concentration be the sulfuric acid of 7% (w/v) as activator, activation is 50 minutes under 130 ℃ activation temperature.
Select for use 30ml concentration be the hydrogen peroxide of 10% (w/v) as the oxidisability activator, activation is 50 minutes under 180 ℃ activation temperature.
Use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 30ml concentration for use is that the sulfuric acid of 7% (w/v) is as activator, activation is 50 minutes under 130 ℃ activation temperature, select for use again 30ml concentration be the hydrogen peroxide of 10% (w/v) as the oxidisability activator, activation is 50 minutes under 180 ℃ activation temperature.
The manufacture method that is used for the rice hull adsorbent of absorbing dye of the present invention, in terms of existing technologies because it uses discarded rice husk as raw material, make that the adsorbent environmental-protecting performance is better, after a series of activation, control the consumption and the concentration of each activator, the adsorption capacity that the activation certain hour guarantees the rice hull adsorbent that is used for absorbing dye made under suitable activation temperature than higher, adsorbance is bigger, adsorption effect is relatively good.
The specific embodiment
Below the present invention is described in further detail.
The rice hull adsorbent that is used for absorbing dye of the present invention, it is to make by following steps: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 25ml-45ml concentration again for use is that the sulfuric acid of 4.5%-8.5% (w/v) is as activator, activation is 45-75 minute under 110 ℃ of-150 ℃ of activation temperatures, and then to select 20ml-50ml concentration for use be that the hydrogen peroxide of 6.0%-18% (w/v) is as the oxidisability activator, add below the sulphur acid for adjusting pH value to 6.0, the back activates 40-80 minute under 170 ℃-200 ℃ activation temperature.Such adsorbent is owing to be to use the rice husk of passing into disuse at present as raw material, raw-material cost is extremely low, and raw-material supply can be bigger, and the adsorbance of the adsorbent of making is bigger, adsorption effect is relatively good, and adsorption capacity is more intense, reaches more than 50% through the adsorption rate of overtesting to the methylene blue solution of 0.1mg/ml, adsorbent material not only comprises the dyestuff in the dyeing waste water, also includes some materials in the organic waste water.
A kind of manufacture method that is used for the rice hull adsorbent of absorbing dye of the present invention, may further comprise the steps: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 25ml-45ml concentration again for use is that the sulfuric acid of 4.5%-8.5% (w/v) is as activator, activation is 45-75 minute under 110 ℃ of-150 ℃ of activation temperatures, and then to select 20ml-50ml concentration for use be that the hydrogen peroxide of 6.0%-18% (w/v) is as the oxidisability activator, add below the sulphur acid for adjusting pH value to 6.0, the back activates 40-80 minute under 170 ℃-200 ℃ activation temperature.
After being specially rice husk removal silt impurity, be crushed to 20 orders, at first carry out activator and select test.The broken degree of rice husk has certain influence to activation, but fragmentation all appears in rice husk in activation process, the difficult control of broken degree, and the broken degree in the activated back of the rice husk of the broken degree of 20 orders does not wait at the 40-100 order, so that the broken degree of rice husk reaches 20 orders is just passable.According to the characteristics that the rice husk structure is formed, mainly be to activate its cellulose or lignin, or from SiO
2Activation, make rice husk form the carbon of many activated adoption points.For this reason, select the bronsted lowry acids and bases bronsted lowry wiring solution-forming, mix with rice husk after pulverizing, in test activation situation more than 100 ℃.Rice husk after the activation is made adsorbent, add the 0.5g adsorbent with every 1000ml dye solution, 30 minutes mode of stirring and adsorbing is tested absorption property, with adsorption of methylene indigo plant serves as to investigate index, the result is as shown in table 1, and adsorbent prepares the experimental condition activation temperature and is 120 ℃, and soak time is 60 minutes, the consumption of activator is the 30ml/100g rice husk, and the concentration of methylene blue solution is 0.1mg/ml.
The activating reagent of table 1. rice husk activation absorbing dye is selected test
| Activating reagent | Reagent concentration (%w/v) | The adsorption rate of methylene blue solution (%) |
| H 2SO 4 | 5.0 | 33.8 |
| HCL | 10 | 27.6 |
| NaOH | 5.0 | 23.3 |
| Na 2CO 3 | 10 | 11.5 |
By last test and table 1 as can be known, acid is better as the activation effect of activator with alkali to rice husk activation absorbing dye effect ratio as activating reagent, in two kinds of acid commonly used, use sulfuric acid as the adsorption rate of the adsorbent of activator preparation than the adsorption rate height of hydrochloric acid as activator, therefore, according to the result of the test that activating reagent is selected, at first determine to use sulfuric acid as activator.
Further determine the temperature of sulfuric acid activation rice husk, select same concentrations promptly the sulfuric acid solution of 5.0% (w/v) as activator, soak time is 60 minutes, the consumption of the activator that every 100g rice husk uses is 30ml, under different activation temperatures, rice husk is activated test, the adsorption rate that with the adsorption concentration is the methylene blue of 0.1mg/ml is to investigate index, and the result is as shown in table 2.
The temperature of table 2. sulfuric acid activation rice husk is selected test
| Activation temperature (℃) | Sulfuric acid concentration (%w/v) | The adsorption rate of methylene blue solution (%) |
| 100 | 5.0 | 20.6 |
| 110 | 5.0 | 22.1 |
| 120 | 5.0 | 33.4 |
| 130 | 5.0 | 36.8 |
| 140 | 5.0 | 32.0 |
| 150 | 5.0 | 36.5 |
By last test and table 2 as can be known, with sulfuric acid as activator, activation temperature is at 110 ℃-150 ℃ the time, rice husk to the adsorption rate of methylene blue solution more than 22%, when activation temperature more than 130 ℃ the time, rice husk changes not quite substantially to the adsorption rate of methylene blue solution, remain on about 36%, therefore determine that activation temperature is that 130 ℃ of left and right sides are proper when sulfuric acid during as activator, temperature is crossed and is hanged down that then adsorption rate is lower, adsorption rate was constant substantially when temperature was too high, but because it is many to reach the heating energy source that higher activation temperature needs, therefore under the situation that guarantees adsorption rate, save the energy as much as possible, determine 130 ℃ most preferably activation temperature.
Further again, determine the concentration of sulfuric acid solution, select sulfuric acid solution as activator, soak time is 60 minutes, the consumption of the activator that every 100g rice husk uses is 30ml, under 130 ℃ of identical activation temperatures, rice husk is activated test, the adsorption rate that with the adsorption concentration is the methylene blue of 0.1mg/ml is to investigate index, the concentration (w/v) of the sulfuric acid of selecting is respectively 3%, 4%, 4.5%, 5%, 6%, 7%, 8% and 8.5%, result of the test is respectively 11.6% to the adsorption rate of the methylene blue of 0.1mg/ml, 25.7%, 32.7%, 36.9%, 40.2%, 43%, 43.5% and 43.7%.Can learn by above-mentioned result of the test, raising along with the concentration of activator sulfuric acid, the ability of rice husk activation back absorbing dye increases, rice husk activation back reaches requirement to the adsorption rate of dyestuff when concentration reaches 4.5%-8.5% (w/v), the sulfuric acid concentration of comparative optimization is 7%-8% (w/v), because when the concentration of sulfuric acid reaches after 7.0%, rice husk after the activation is basicly stable to the adsorption effect of dyestuff, can waste unnecessary sulfuric acid during excessive concentration, and adsorption effect can not improve a lot, the concentration of most preferred sulfuric acid is 7% (w/v), and it is better to change the back adsorption effect of living like this.
Further determine again when the activation rice husk, to select for use sulfuric acid as the employed amount ranges of activator, select sulfuric acid solution as activator, soak time is 60 minutes, the concentration of sulfuric acid is 7% (m/v), under 130 ℃ of identical activation temperatures, rice husk is activated test, the adsorption rate that with the adsorption concentration is the methylene blue of 0.1mg/ml is to investigate index, select the consumption of sulfuric acid to be respectively every 100g rice husk 10ml, 20ml, 25ml, 30ml, 40ml, 45ml and 50ml, behind the sulfuric acid activation rice husk of each concentration, to concentration is that the adsorption rate of the methylene blue of 0.1mg/ml is respectively 13.7%, 29.2%, 35.6%, 42.6%, 43.3%, 42.7% and 40.9%, by above-mentioned experimental test result as can be known, concentration is that the consumption of 7% sulfuric acid is when being every 100g rice husk 25ml-45ml, rice husk after guaranteeing to activate reaches more stable 35%-42% to the adsorption rate of dyestuff, the consumption of comparative optimization is that every 100g rice husk use 30ml-40ml concentration is 7% sulfuric acid, when the consumption of sulfuric acid is too much, can not improve the adsorption rate of activation back rice husk to dyestuff, reason is but that the amount of sulfuric acid satisfies the evaporation of hypervolia needs certain hour, so under the situation that soak time is fixed, too much and then the hypervolia of sulfuric acid use amount, influence activation effect on the contrary, most preferably the 30ml consumption is relatively saved sulfuric acid amount.
Last further definite soak time, when the activation rice husk, select sulfuric acid solution as activator, using the concentration of sulfuric acid is 7% (m/v), consumption is every 100g rice husk 30ml sulfuric acid, under 130 ℃ of identical activation temperatures, rice husk is activated test, the adsorption rate that with the adsorption concentration is the methylene blue of 0.1mg/ml is to investigate index, select soak time to be respectively 30 minutes, 40 minutes, 45 minutes, 50 minutes, 60 minutes, 70 minutes, 75 minutes and 80 minutes, behind the above-mentioned soak time of sulfuric acid activation rice husk, to concentration is that the adsorption rate of the methylene blue of 0.1mg/ml is respectively 28.3%, 37.6%, 40.3%, 42.8%, 43.1%, 43.7%, 44.1% and 44.2%, by above-mentioned experimental test result as can be known, when soak time is 45 minutes to 75 minutes, rice husk after guaranteeing to activate reaches more stable 40%-44% to the adsorption rate of dyestuff, influence is not big especially to adsorption rate to prolong soak time again, therefore, in order to save soak time, improve output capacity, the soak time of comparative optimization is 50-60 minute, adsorption rate reaches more than 42%, most preferred soak time is 50 minutes, relatively save time, and adsorption rate is higher, generalized time, the rate of output and adsorption rate are better.
Through above-mentioned campaign, with sulfuric acid is activator activation rice husk, be used for absorbing dye, only activation condition is: sulfuric acid is configured to the solution that concentration is 7% (w/v) with running water, use 30ml to use the sulfuric acid solution after disposing to activate with every 100g rice husk, after stirring, be that the adsorption rate of the methylene blue of 0.1mg/ml can obtain through overtesting to concentration at the adsorbent of activation preparation after 50 minutes under 130 ℃ the activation temperature be 42.9%, adsorbance is bigger, and adsorption capacity is more intense.From the result of the test of above-mentioned acid activation rice husk as can be known, the reaction of rice husk activation is the structure that acid destroys its cellulose and lignin, and formation adsorption activity point has stronger absorption to dyestuff, and the activation effect of sulfuric acid is better than hydrochloric acid.This activation process is carried out under the temperature about 130 ℃, acid is configured to weak solution so that stir with rice husk, moisture evaporates substantially in activation process, acid and cellulose and lignin effect activation, after water evaporates, sulfuric acid has certain oxidisability, and hydrochloric acid does not have oxidisability, oxidation is more intense to cellulose and lignin degradation effect, thereby makes that the effect of sulfuric acid is stronger as the effect of activator than the effect of hydrochloric acid.
For this reason, select hydrogen peroxide as the oxidisability activator again, with the sulphur acid for adjusting pH value, the rice husk after further activated acids is handled is to improve the adsorption effect to dyestuff.Carry out the test of hydrogen peroxide as activator again, select hydrogen peroxide as the oxidisability activator, with the sulphur acid for adjusting pH value, further activate rice husk, rice husk is better to the adsorption effect of dyestuff like this.At first hydrogen peroxide is mixed with the aqueous solution of 10% (w/v), with the sulphur acid for adjusting pH value is 2, adding 30ml concentration according to every 100g acid treatment rice husk is 10% aqueous hydrogen peroxide solution, stir, carrying out priming reaction more than 150 ℃ 60 minutes, the methylene blue solution that still adopts 0.1mg/ml is as test agent, according to the adsorbent 0.5g after every 1000ml adding activation, evenly stirred 30 minutes, measure its adsorption rate, the adsorption rate of the adsorbent of test preparation under different activation temperatures.Specifically under the afore-mentioned test condition, activation temperature is respectively 150 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃ and 200 ℃, the adsorbent of activation back preparation is respectively 52.3% to the adsorption rate of the methylene blue aqueous solution, 65.7%, 79.4%, 83.8%, 84.1% and 84%, hence one can see that, hydrogen peroxide activates the rice husk preparation under acid condition adsorbent has reasonable adsorption effect and adsorption capacity, when activation temperature reaches 170 ℃ to the adsorption rate of dyestuff near 80%, adsorption effect is good, preferred activation temperature is 180 ℃-190 ℃, according to result of the test, the adsorption rate of activation back preparation is very high in this scope, adsorption effect substantially no longer improves after activation temperature surpasses 190 ℃, take all factors into consideration heating condition and adsorption efficiency, most preferred activation temperature is 180 ℃.
Further determine the optium concentration of hydrogen peroxide, with the sulphur acid for adjusting pH value is 2, add the different aqueous hydrogen peroxide solution of 30ml concentration according to every 100g acid treatment rice husk, stir, carrying out priming reaction more than 180 ℃ 60 minutes, the methylene blue solution that still adopts 0.1mg/ml is as test agent, according to the adsorbent 0.5g after every 1000ml adding activation, evenly stirred 30 minutes, measure its adsorption rate, use the hydrogen peroxide of variable concentrations to prepare adsorbent as activator activation rice husk, the adsorption rate of the adsorbent of test preparation.When the concentration of hydrogen peroxide is respectively 4%, 6%, 10%, 14% and 18%, activation back rice husk is that the adsorption rate of the methylene blue solution of 0.1mg/ml is respectively 57.8%, 76.7%, 84.2%, 84.6% and 85.1% to concentration, the group test can be learnt thus, when the concentration of hydrogen peroxide reaches more than 10% (w/v), rice husk after the activation improves less to the adsorption effect of dyestuff, when the concentration of hydrogen peroxide reaches 10%-14%, effect is relatively good, simultaneously comprehensive adsorption effect is good considers that with saving production cost aspect the most preferable concentrations of hydrogen peroxide is 10%.
The pH value of the best when further determining activation again.Regulate different pH values with sulfuric acid, adding 30ml concentration according to every 100g acid treatment rice husk is 10% aqueous hydrogen peroxide solution, stir, carrying out priming reaction more than 180 ℃ 60 minutes, the methylene blue solution that still adopts 0.1mg/ml is as test agent, according to the rice husk 0.5g after every 1000ml adding activation, evenly stirred 30 minutes, measure its adsorption rate, the activation rice husk prepares adsorbent under different pH value environment, the adsorption rate of the adsorbent of test preparation.When the pH value of the hydrogen peroxide solution that uses sulfuric acid to regulate is respectively 1,2,3,4,5 and 6, rice husk after the activation is respectively 85.5%, 84.3%, 84.8%, 83.6%, 83.9% and 83.2% to the adsorption rate of the methylene blue solution of 0.1mg/ml, can learn by this group test, during hydrogen peroxide activation rice husk, the pH value is little to the performance variation influence of absorbing dye, and to slightly acidic condition, promptly pH is less than all can below 6 in acidity, when the pH value 3 when following, the activation effect basically identical.
Further determine the consumption of hydrogen peroxide activation rice husk again.With the sulphur acid for adjusting pH value is 2, the concentration that add different amounts according to every 100g acid treatment rice husk are 10% aqueous hydrogen peroxide solution, stir, carrying out priming reaction more than 180 ℃ 60 minutes, the methylene blue solution that still adopts 0.1mg/ml is as test agent, according to the rice husk 0.5g after every 1000ml adding activation, evenly stirred 30 minutes, measure its adsorption rate, use the hydrogen peroxide activation rice husk of different amounts to prepare adsorbent, the adsorption rate of test preparation adsorbent.When being respectively every 100g rice husk, the consumption of the hydrogen peroxide solution that uses uses 10ml, 20ml, 30ml, when 40ml and 50ml, rice husk after the activation is respectively 49.3% to the adsorption rate of the methylene blue solution of 0.1mg/ml, 78.6%, 84.0%, 85.7% and 85.2%, can learn by this group test, during hydrogen peroxide activation rice husk, adding 20ml concentration is that 10% (w/v) is more than the hydrogen peroxide solution, adsorption rate reaches more than 78%, effect is better, comparative optimization for 30ml-40ml concentration be that 10% (w/v) is more than the hydrogen peroxide solution, integrated cost and adsorption capacity, most preferred consumption are 30ml.
Determine soak time at last, with the sulphur acid for adjusting pH value is 2, adding concentration according to every 100g acid treatment rice husk is 10% aqueous hydrogen peroxide solution, stirs, and is carrying out the priming reaction different time more than 180 ℃, the methylene blue solution that still adopts 0.1mg/ml is as test agent, rice husk 0.5g according to after every 1000ml adding activation evenly stirred 30 minutes, measured its adsorption rate, the activation different time prepares adsorbent, the adsorption rate of test preparation adsorbent.When soak time is distinguished 30 minutes, 40 minutes, 45 minutes, 50 minutes, 60 minutes, 70 minutes, when 75 minutes and 80 minutes, rice husk after the activation is respectively 67.6% to the adsorption rate of the methylene blue solution of 0.1mg/ml, 80.5%, 83.6%, 84.1%, 84.3%, 85.7%, 85.8% and 85.9%, can learn by this group test, soak time reached more than 40 minutes, adsorption rate reaches more than 80%, effect is better, comparative optimization be 50 minutes to 60 minutes, because activate more than 50 minutes, the rice husk adsorption rate substantially no longer improves, comprehensive output capacity and adsorption capacity, most preferred soak time is 50 minutes.
The optimised process of hydrogen peroxide activation rice husk is: every 100g rice husk uses the hydrogen peroxide 30ml of 10% (w/v), stir, activate 50 minutes down at 180 ℃, activation gained rice hull adsorbent is to the adsorption rate of the methylene blue solution of 0.1mg/ml, be respectively 83.8%, 84.1% and 84.3% through three tests, adsorption effect is better.In sum, the optimised process of rice hull adsorbent is: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 30ml concentration for use is that the sulfuric acid of 7% (w/v) is as activator, activation is 50 minutes under 130 ℃ activation temperature, select for use again 30ml concentration be the hydrogen peroxide of 10% (w/v) as the oxidisability activator, activation is 50 minutes under 180 ℃ activation temperature.And according to optimised process, every 1000g rice husk can be produced adsorbent 762g, and the rate of output is than higher.
Above-mentionedly only several specific embodiments among the present invention are illustrated, but can not be as protection scope of the present invention, every equivalence of having done according to the design spirit among the present invention changes or modifies, and all should think to fall into protection scope of the present invention.
Claims (10)
1. rice hull adsorbent that is used for absorbing dye, it is characterized in that: it is to make by following steps: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 25ml-45ml concentration again for use is that the sulfuric acid of 4.5%-8.5% (w/v) is as activator, activation is 45-75 minute under 110 ℃ of-150 ℃ of activation temperatures, and then to select 20ml-50ml concentration for use be that the hydrogen peroxide of 6.0%-18% (w/v) is as the oxidisability activator, add below the sulphur acid for adjusting pH value to 6.0, the back activates 40-80 minute under 170 ℃-200 ℃ activation temperature.
2. described manufacture method that is used for the rice hull adsorbent of absorbing dye of claim 1, it is characterized in that: may further comprise the steps: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 25ml-45ml concentration again for use is that the sulfuric acid of 4.5%-8.5% (w/v) is as activator, activation is 45-75 minute under 110 ℃ of-150 ℃ of activation temperatures, and then to select 20ml-50ml concentration for use be that the hydrogen peroxide of 6%-18% (w/v) is as the oxidisability activator, add below the sulphur acid for adjusting pH value to 6, the back activates 40-80 minute under 170 ℃-200 ℃ activation temperature.
3. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 2, it is characterized in that: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 30ml-40ml concentration again for use is that the sulfuric acid of 7%-8% (w/v) is as activator, activation is 50-60 minute under 130 ℃ of-150 ℃ of activation temperatures, and then to select 30ml-40ml concentration for use be that the hydrogen peroxide of 10%-14% (w/v) is as the oxidisability activator, add below the sulphur acid for adjusting pH value to 3, the back activates 50-60 minute under 180 ℃-190 ℃ activation temperature.
4. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 3 is characterized in that: selecting 30ml concentration for use is that the sulfuric acid of 7% (w/v) is as activator.
5. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 3 is characterized in that: select for use sulfuric acid to activate 50 minutes as activator under 130 ℃ activation temperature.
6. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 3, it is characterized in that: use pulverizer to be crushed to 20 orders after the 100g rice husk being removed silt impurity earlier, select for use 30ml concentration be the sulfuric acid of 7% (w/v) as activator, activation is 50 minutes under 130 ℃ activation temperature.
7. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 3 is characterized in that: selecting 30ml concentration for use is that the hydrogen peroxide of 10% (w/v) is as the oxidisability activator.
8. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 3 is characterized in that: select for use hydrogen peroxide as the oxidisability activator, activation is 50 minutes under 180 ℃ activation temperature.
9. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 3 is characterized in that: select for use 30ml concentration be the hydrogen peroxide of 10% (w/v) as the oxidisability activator, activation is 50 minutes under 180 ℃ activation temperature.
10. the manufacture method that is used for the rice hull adsorbent of absorbing dye according to claim 3, it is characterized in that: use pulverizer to pulverize 20 orders after the 100g rice husk being removed silt impurity earlier, selecting 30ml concentration for use is that the sulfuric acid of 7% (w/v) is as activator, activation is 50 minutes under 130 ℃ activation temperature, select for use again 30ml concentration be the hydrogen peroxide of 10% (w/v) as the oxidisability activator, activation is 50 minutes under 180 ℃ activation temperature.
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| CN105013451B (en) * | 2015-08-03 | 2017-09-22 | 江西省科学院生物资源研究所 | A kind of biomass adsorbent preparation method of efficient absorption heavy metal ions in wastewater |
| CN105170108B (en) * | 2015-10-19 | 2017-10-13 | 辽宁大学 | A kind of rice husk cellulose adsorbent and its preparation method and application |
| CN111468070B (en) * | 2020-03-24 | 2022-06-24 | 杭州市富阳区浙工大银湖创新创业研究院 | Simple, convenient and efficient preparation method of magnetically separable biomass dye adsorbent |
| CN115646435A (en) * | 2022-11-18 | 2023-01-31 | 中国水产科学研究院黄海水产研究所 | Marine heavy metal adsorbent, preparation and use method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706543A (en) * | 2004-06-08 | 2005-12-14 | 张广志 | Composite adsorbent preparing process |
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2008
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706543A (en) * | 2004-06-08 | 2005-12-14 | 张广志 | Composite adsorbent preparing process |
Non-Patent Citations (6)
| Title |
|---|
| 李长海,王元瑞.印染废水中脱色研究的新进展.吉林工学院学报19 2.1998,19(2),49-55. |
| 李长海,王元瑞.印染废水中脱色研究的新进展.吉林工学院学报19 2.1998,19(2),49-55. * |
| 钱俊青.稻壳制备吸附剂及其性能研究.中国粮油学报15 6.2000,15(6),43-47. |
| 钱俊青.稻壳制备吸附剂及其性能研究.中国粮油学报15 6.2000,15(6),43-47. * |
| 钱俊青.稻谷壳的深加工技术.中国商办工业 1.2001,(1),44-46. |
| 钱俊青.稻谷壳的深加工技术.中国商办工业 1.2001,(1),44-46. * |
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