CN109482155A - Preparation method of modified sunflower seed shell biological adsorption agent and products thereof and application - Google Patents
Preparation method of modified sunflower seed shell biological adsorption agent and products thereof and application Download PDFInfo
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- CN109482155A CN109482155A CN201811525521.3A CN201811525521A CN109482155A CN 109482155 A CN109482155 A CN 109482155A CN 201811525521 A CN201811525521 A CN 201811525521A CN 109482155 A CN109482155 A CN 109482155A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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Abstract
The present invention relates to preparation method of modified sunflower seed shell biological adsorption agent and products thereof and application, modifying process is reacted after a certain period of time at a certain temperature by the way that a certain amount of ethylenediamine, distilled water and sodium carbonate is added, filtering, it is washed to neutrality, dries, obtains modified sunflower seed shell biological adsorption agent.The present invention is modified sunflower seed shell by ethylenediamine, it improves natural sunflower seed seed shell and leaches situation as pigment during adsorbent, improve modified adsorbent physical strength simultaneously, increase surface-active functional group's quantity, the adsorption effect of sunflower seed shell effectively is enhanced, is significantly better than same type biological adsorption agent.In addition, handling waste water with sunflower seed shell, the processing cost of waste water not only can effectively reduce, moreover it is possible to using existing a large amount of cheap green resources, so that the comprehensive utilization for bio-waste provides new way.
Description
Technical field
The invention belongs to Material Fields, and in particular to the preparation method of modified sunflower seed shell biological adsorption agent further relates to make
The product obtained and application.
Background technique
Alizarin red belongs to anthraquinone analog compound, is widely used in dyestuff, acid-base indicator, has multiple compared with high toxicity, structure
The features such as miscellaneous and COD (COD) is big is one of most representative dyestuff.Containing in its structure to biology is in high inhibition
The phenyl ring of effect, and be high conjugated molecule system, it is difficult to adopt biological method and is degraded into inorganic molecules.Currently, needle
Physical absorption, chemical reagent oxidation, film process, photochemical catalytic oxidation and micro- life are concentrated mainly on to the research of such dyeing waste water
The technologies such as object degradation treatment.A series of problems, such as these methods are mostly excessively high, cumbersome, energy consumption is high because of cost is widely applied
It is restricted.Therefore, seeking inexpensive, efficient, pollution-free, the easy to operate adsorbent of one kind is that current research personnel need to pay close attention to
Major issue.
Sunflower is one of big oil crops in China five, and sunflower seed shell is as industrial by-product, every year about
700000 tons of yield.Sunflower seed shell nutriment rich in, it is comprehensively utilized at present be mainly utilized to do fuel,
Make adsorbent, extract natural pigment, extract the higher active constituent of medical value etc..But directly sunflower seed shell is used
In processing alizarin red dye, since its surface active composition content is less, adsorption capacity is not satisfactory, and as adsorbent, there are colors
Plain leaching problem increases simultaneously because the dissolution of soluble organic matter will lead to chemical oxygen consumption (COC) in water, and sunflower seed shell
Physical strength it is poor, without sufficient intensity be used for wastewater treatment.Chemical modification can change, and can not only be effectively improved its object
Intensity is managed, the adsorption effect of material prepared can be also effectively enhanced.Therefore, it is necessary to be modified to sunflower seed shell, fitted
For the biological adsorption agent of alizarin red dye, the processing cost of waste water not only can effectively reduce, and can utilize existing a large amount of honest and clean
Valence green resource provides new approach for the comprehensive utilization of agricultural wastes.
Summary of the invention
In view of this, one of the objects of the present invention is to provide the methods of modified sunflower seed shell biological adsorption agent；The present invention
The second purpose be to provide the sunflower seed shell adsorbent as made from the method；The third object of the present invention is to provide institute
State application of the sunflower seed shell adsorbent in processing alizarin red dye wastewater；The fourth object of the present invention is to provide described in utilization
The method of sunflower seed shell adsorbent processing alizarin red dye wastewater.
For achieving the above object, the invention provides the following technical scheme:
1, the method for modified sunflower seed shell biological adsorption agent, the preparation step of the modified sunflower seed shell adsorbent are as follows:
(1) after cleaning sunflower seed shell, boiling water boiling sufficiently impregnates, and filters, and washing removes suspension subtitle substance and solvable
Property substance after, be placed in baking oven and dry, crush, collect 40~60 mesh sunflower seed shell；
(2) taking mesh number is the sunflower seed shell of 40~60 mesh, and ethylenediamine, the 10mL of 1~11mL are added by every gram of sunflower seed shell
Distilled water, 0.1~0.0.5g sodium carbonate filter after reacting 1~3h under the conditions of 60~100 DEG C, are washed to neutrality, dry, obtain
Modified sunflower seed shell adsorbent.
Preferably, in step (1), the time of the boiling water boiling is 2h, and the time of the immersion is for 24 hours.
Preferably, step (2) is that take mesh number be the sunflower seed shell of 40~60 mesh, 6.5 are added by every gram of sunflower seed shell~
The ethylenediamine of 7.5mL, 10mL distilled water, 0.3~0.4g sodium carbonate filter after reacting 2~2.5h under the conditions of 80~100 DEG C,
It is washed to neutrality, dries, obtains modified sunflower seed shell adsorbent.
Preferably, step (2) is that take mesh number be the sunflower seed shell of 40~60 mesh, and the second of 7mL is added by every gram of sunflower seed shell
Diamines, 10mL distilled water, 0.3g sodium carbonate filter after reacting 2.5h under the conditions of 100 DEG C, are washed to neutrality, dry, obtain modification
Sunflower seed shell adsorbent.
2, the sunflower seed shell adsorbent as made from the method.
3, application of the sunflower seed shell adsorbent in processing alizarin red dye wastewater.
4, the method for sunflower seed shell adsorbent processing alizarin red dye wastewater is utilized, the specific steps are as follows: by quality
Concentration is in 100~400mg/L alizarin red dye wastewater by sunflower seed shell adsorbent: wastewater quality volume ratio is 0.5~5:1,
Sunflower seed shell adsorbent is added in unit g/L, and the pH for adjusting waste water is 2~14, and absorption is then stirred or vibrated at 20~50 DEG C
2~6h.
Preferably, the pH is 3.5.
Preferably, further include the regeneration of sunflower seed shell adsorbent after absorption, specially adsorb the sunflower seed shell after absorption
0.2L ethyl acetate is added by 1g sunflower seed shell adsorbent in agent, and 4h is stirred at 50 DEG C.
The beneficial effects of the present invention are: the present invention is modified sunflower seed shell by ethylenediamine, modified sunflower
In use, pigment leaching will not occur for seed shell adsorbent, while the physical strength of adsorbent is improved, stirred
It is not susceptible to be crushed in journey, the number of surface-active functional group increases considerably, and further improves the absorption effect of sunflower seed shell
Fruit, the experimental result is it is found that press the additional amount of 2g/L (sunflower seed shell: waste water) sunflower seed shell adsorbent, institute through the invention
Stating sunflower seed shell adsorbent is more than 60% to the waste water dyestuff removal rate that alizarin red mass concentration is 100mg/L；Adsorbent reactivation
When, the alizarin red eluting rate being adsorbed on sunflower seed shell is more than 95%.In addition, waste water is handled with sunflower seeds, it not only can be effective
Reduce the processing cost of waste water, moreover it is possible to using existing a large amount of cheap green resources, to be the comprehensive utilization of agricultural wastes
Provide new way.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
The invention will be further described by the following examples.Test method without specific conditions in embodiment,
Usually according to normal condition.
The preparation method of embodiment 1, modified sunflower seed shell biological adsorption agent
The preparation method of modified sunflower seed shell biological adsorption agent, the specific steps are as follows:
(1) after sunflower seed shell being cleaned, boiling water boiling 2h, impregnate for 24 hours, filter, washing, sufficiently remove suspension subtitle substance and
It after solable matter, is placed in baking oven and dries, crush, cross 40 mesh and 60 meshes；
(2) take 2g mesh number for the sunflower seed shell of 40~60 mesh, the ethylenediamine of 13~15mL of addition, 20mL distilled water, 0.5~
0.7g sodium carbonate filters after reacting 1.5~2.5h under the conditions of 80~100 DEG C, is washed to neutrality, dries, obtains modified sunflower seeds
Shell adsorbent.
The preparation method of embodiment 2, modified sunflower seed shell biological adsorption agent
The preparation method of modified sunflower seed shell biological adsorption agent, the specific steps are as follows:
(1) after sunflower seed shell being cleaned, boiling water boiling 2h, impregnate for 24 hours, filter, washing, sufficiently remove suspension subtitle substance and
It after solable matter, is placed in baking oven and dries, crush, cross 40 mesh and 60 meshes；
(2) taking 2g mesh number is the sunflower seed shell of 40~60 mesh, the methanol of 125mL, the hydrochloric acid of 1.3ml is added, in 75 DEG C of items
It is filtered after reacting 2.5h under part, is washed to neutrality, 80 DEG C of drying obtain modified sunflower seed shell adsorbent.
The preparation method of embodiment 3, modified sunflower seed shell biological adsorption agent
The preparation method of modified sunflower seed shell biological adsorption agent, the specific steps are as follows:
(1) after sunflower seed shell being cleaned, boiling water boiling 2h, impregnate for 24 hours, filter, washing, sufficiently remove suspension subtitle substance and
It after solable matter, is placed in baking oven and dries, crush, cross 40 mesh and 60 meshes；
(2) take 2g mesh number be 40~60 mesh sunflower seed shell, be added 40mL concentration be 1.5mol/L sodium hydroxide, again plus
The propylene oxide for entering 30ml filters after reacting 2h under the conditions of 30 DEG C, is washed to neutrality, and 80 DEG C of drying obtain modified sunflower seed shell
Adsorbent.
It is used for modified sunflower seed shell adsorbent made from the method in Examples 1 to 3 to adsorb alizarin red aqueous solution, it is specific to walk
It is rapid as follows: to be the alizarin red aqueous solution that 100mL mass concentration is 100mg/L by volume, be 3.5 ± 0.1 with pH value of solution is adjusted, be added
Adsorbent 0.1g is adsorbed on isothermal vibration shaking table, 30 DEG C of adsorption temp, 150 turns of revolving speed, 3h is adsorbed, before detection absorption
The concentration of the red solution of hystazarin, the results are shown in Table 1.
Table 1, modified sunflower seed shell adsorbent adsorb alizarin red effect
| Modifying agent | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Adsorbance mg/g before modified | 3.43 | 3.29 | 3.47 |
| Modified adsorbance mg/g | 24.12 | 14.81 | 6.99 |
The results show that adsorbance no significant difference, modified adsorbance dramatically increase different disposal group before modified, wherein second
The modified adsorption effect of diamines is optimal.
The influence of adsorbent adsorption effect described in embodiment 4, reaction time
The sunflower seed shell for taking 2.0g 40-60 mesh is placed in clean three-necked flask, and the ethylenediamine of 12mL is added, and 20mL steams
Distilled water, 0.4g sodium carbonate after reacting 1~3h under 80 DEG C of bath temperatures, filter, are cleaned with deionized water to filtrate and be in neutrality
Afterwards, it is placed in 80 DEG C of baking oven and dries to constant weight, obtain modified sunflower seeds adsorbent.
The above-mentioned modification sunflower seeds adsorbent 0.2g prepared under the differential responses time is accurately weighed respectively, and it is dense that 80mL is added
The alizarin red aqueous solution of 100mg/L is spent, adjusting pH is 3.6 (± 0.01), is placed in thermostatic control oscillator vibration, vibrates at 30 DEG C
3h, revolving speed are 150 turns/min, measure alizarin red concentration in residual solution, calculate adsorbance, the results are shown in Table 2.
The influence of table 2, reaction time to modified sunflower seeds adsorbent absorption alizarin red effect
| Reaction time (h) | 1 | 1.5 | 2 | 2.5 | 3 | Unmodified sunflower seeds |
| Adsorbance (mg/g) | 20.80 | 21.79 | 22.99 | 22.51 | 21.85 | 3.43 |
As can be seen from Table 2, reaction time adsorbance between 1~3h is all larger than 20mg/g, but the reaction time, control was 2
~2.5h adsorption effect is best.
The influence of embodiment 5, reaction temperature to the adsorbent adsorption effect
The sunflower seeds for taking 2.0g 40-60 mesh is placed in clean three-necked flask, and the ethylenediamine of 6mL, 20mL distillation is added
Water, 0.4g sodium carbonate after reacting 2h under 60~100 DEG C of bath temperature, filter, are cleaned with deionized water to filtrate and be in neutrality
Afterwards, it is placed in 80 DEG C of baking oven and dries to constant weight, obtain modified sunflower seeds adsorbent.
The above-mentioned modification sunflower seeds adsorbent 0.2g prepared under the differential responses time is accurately weighed respectively, and it is dense that 80mL is added
The alizarin red aqueous solution of 100mg/L is spent, adjusting pH is 3.6 (± 0.01), is placed in thermostatic control oscillator vibration, vibrates at 30 DEG C
3h, revolving speed are 150 turns/min, measure alizarin red concentration in residual solution, calculate adsorbance, the results are shown in Table 3.
The influence of table 3, reaction temperature to modified sunflower seeds adsorbent absorption alizarin red effect
| Reaction temperature (DEG C) | 60 | 70 | 80 | 90 | 100 | Unmodified sunflower seeds |
| Adsorbance (mg/g) | 18.93 | 19.42 | 19.50 | 19.86 | 21.85 | 2.84 |
As shown in Table 3, adsorbance is all larger than 18mg/g at being 60~100 DEG C in reaction temperature, wherein under the conditions of 100 DEG C
It is best to react adsorption effect.
The influence of embodiment 6, ethylenediamine dosage to the adsorbent adsorption effect
The sunflower seeds for taking 2.0g 40-60 mesh is placed in clean three-necked flask, and the ethylenediamine of 2~22mL, 20mL is added
Distilled water, 0.4g sodium carbonate after reacting 2h under the conditions of 100 DEG C, filter, are cleaned with deionized water to filtrate after being in neutrality, set
It dries to constant weight in 80 DEG C of baking oven, obtains modified sunflower seeds adsorbent.
The above-mentioned modification sunflower seeds adsorbent 0.2g prepared under the differential responses time is accurately weighed respectively, and it is dense that 80mL is added
The alizarin red aqueous solution of 100mg/L is spent, adjusting pH is 3.6 (± 0.01), is placed in thermostatic control oscillator vibration, vibrates at 30 DEG C
3h, revolving speed are 150 turns/min, measure alizarin red concentration in residual solution, calculate adsorbance, the results are shown in Table 4.
The influence of table 4, ethylenediamine additional amount to modified sunflower seeds adsorbent absorption alizarin red effect
| Ethylenediamine (mL) | 2 | 4 | 6 | 8 | 10 | 14 | 18 | 22 | Unmodified sunflower seeds |
| Adsorbance (mg/g) | 23.84 | 23.95 | 24.48 | 24.96 | 26.18 | 27.21 | 25.66 | 24.41 | 3.84 |
The results show that ethylenediamine additional amount adsorbance within the scope of 2~22ml is above 20mg/g, wherein additional amount is 10
Adsorption effect is best within the scope of~18ml.
The influence of embodiment 7, sodium carbonate amount to the adsorbent adsorption effect
The sunflower seeds for taking 2.0g 40-60 mesh is placed in clean three-necked flask, and the ethylenediamine of 14mL, 20mL distillation is added
Water, 0.2~1.0g sodium carbonate after reacting 2h under the conditions of 100 DEG C, filter, are cleaned with deionized water to filtrate after being in neutrality, set
It dries to constant weight in 80 DEG C of baking oven, obtains modified sunflower seeds alizarin red dye sorbent.
The above-mentioned modification sunflower seeds adsorbent 0.2g prepared under the differential responses time is accurately weighed respectively, and it is dense that 80mL is added
The alizarin red aqueous solution of 100mg/L is spent, adjusting pH is 3.6 (± 0.01), is placed in thermostatic control oscillator vibration, vibrates at 30 DEG C
3h, revolving speed are 150 turns/min, measure alizarin red concentration in residual solution, calculate adsorbance, the results are shown in Table 5.
The influence of table 5, sodium carbonate additional amount to modified sunflower seeds adsorbent absorption alizarin red effect
| Sodium carbonate (g) | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 | Unmodified sunflower seeds |
| Adsorbance (mg/g) | 23.65 | 23.65 | 25.25 | 25.07 | 23.29 | 3.43 |
As shown in Table 5, sodium carbonate additional amount adsorbance within the scope of 0.2~1.0mg is all larger than 23mg/g, and additive amount exists
Adsorption effect is best within the scope of 0.6~0.8mg.
Embodiment 8, optimum preparating condition
Using orthogonal experiment scheme, the sunflower seed shell of 2.0g 40-60 mesh is taken, is placed in clean three-necked flask, is added 13
~15mL ethylenediamine, 20mL distilled water, 0.5~0.7g sodium carbonate react 1.5~2.5h under 80~100 DEG C of bath temperature,
It filters, is cleaned with deionized water to filtrate after being in neutrality, be placed in 80 DEG C of baking oven and dry to constant weight, obtain modified sunflower seeds absorption
Agent.
The above-mentioned modification sunflower seeds adsorbent 0.2g prepared under the differential responses time is accurately weighed respectively, and it is dense that 80mL is added
The alizarin red aqueous solution of 100mg/L is spent, adjusting pH is 3.6 (± 0.01), is placed in thermostatic control oscillator vibration, vibrates at 30 DEG C
3h, revolving speed are 150 turns/min, measure alizarin red concentration in residual solution, calculate adsorbance, the results are shown in Table 6.
The best modified condition of table 6, ethylenediamine
By orthogonal experiment analysis method it is found that ethylenediamine is modified the best of sunflower seeds when sunflower seed shell dosage is 2.0g
Scheme are as follows: ethylenediamine dosage be 14mL, distilled water 20mL, sodium carbonate amount 0.5g, 100 DEG C of reaction temperature, the reaction time
2.5h。
Influence of the solution acid alkalinity to dyestuff removal effect when embodiment 6, wastewater treatment
Taking 60mL mass concentration is the alizarin red aqueous solution of 100mg/L, is adjusted to different pH value (2~12), is added
0.20g, 40-60 mesh are placed in the constant temperature oscillator that temperature is 30 DEG C by the sunflower seeds prepared under modified condition best in embodiment 5
In, revolving speed 150rpm vibrates 3h, measures alizarin red concentration in residual solution, calculates adsorbance, the results are shown in Table 7.
The influence of table 7, solution ph amount to modified sunflower seeds adsorbent absorption alizarin red effect
| Solution ph | 2 | 3 | 3.5 | 4 | 5 | 7 | 9 | 10 | 11 | 12 |
| Adsorbance (mg/g) | 16.50 | 17.62 | 20.01 | 19.28 | 14.42 | 3.11 | 1.83 | 1.46 | 1.24 | 1.09 |
As shown in Table 7, it is modified sunflower seeds adsorbent in acid condition and adsorbs alizarin red better effect, preferably pH=3
In~4 ranges.
The influence of embodiment 7, waste strength to dyestuff removal effect
Taking 100mL mass concentration is the alizarin red aqueous solution of 100~400mg/mL, and pH is adjusted to pH=3.5 (± 0.1), point
Not Jia Ru 0.2g, 40-60 mesh by the sunflower seeds prepared under modified condition best in embodiment 5, be placed in the constant temperature that temperature is 30 DEG C
In oscillator, revolving speed 150rpm vibrates 4h, measures alizarin red concentration in residual solution, calculates adsorbance, the results are shown in Table 6.
The influence of table 6, waste strength to modified sunflower seeds adsorbent alizarin red removal effect
| Alizarin red aqueous solution mass concentration (mg/L) | 100 | 150 | 200 | 250 | 350 | 400 |
| Adsorbance (mg/g) | 27.85 | 33.03 | 43.57 | 57.11 | 73.17 | 84.8 |
| Dyestuff removal rate (%) | 61.1 | 55.8 | 53.4 | 55.2 | 53.6 | 52.5 |
As shown in Table 6, different waste strengths influences less adsorption effect, and wherein concentration is smaller, and removal rate is higher.
Embodiment 8, sunflower seeds adsorbent regeneration effect
The butt sunflower seeds 0.1g (alizarin red adsorbance is 13.34mg/g) for taking 1 absorption alizarin red, is added 20mL acetic acid
Ethyl ester is placed in the constant temperature oscillator that temperature is 30 DEG C, revolving speed 150rpm as eluting solvent, vibrates 2h, alizarin red elution
For rate up to 96.16%, prepared adsorbent has good regenerability.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (9)
1. the method for modified sunflower seed shell biological adsorption agent, it is characterised in that: the preparation of the modified sunflower seed shell adsorbent walks
It is rapid as follows:
(1) after cleaning sunflower seed shell, boiling water boiling sufficiently impregnates, and filters, washing, after removing suspended material and solable matter,
It is placed in baking oven and dries, crush, collect the sunflower seed shell of 40~60 mesh；
(2) taking mesh number is the sunflower seed shell of 40~60 mesh, the ethylenediamine of 1~11mL is added by every gram of sunflower seed shell, 10mL distills
Water, 0.1~0.5g sodium carbonate filter after reacting 1~3h under the conditions of 60~100 DEG C, are washed to neutrality, dry, obtain modified certain herbaceous plants with big flowers
Flower seed shell adsorbent.
2. the method for modified sunflower seed shell biological adsorption agent according to right 1, it is characterised in that: in step (1), the boiling water
The time boiled is 2h, and the time of the immersion is for 24 hours.
3. being modified the method for sunflower seed shell biological adsorption agent according to claim 1, it is characterised in that: step (2) is to take mesh
Number is the sunflower seed shells of 40~60 mesh, is added the ethylenediamine of 6.5~7.5mL by every gram of sunflower seed shell, 10mL distilled water, 0.3~
0.4g sodium carbonate filters after reacting 2~2.5h under the conditions of 80~100 DEG C, is washed to neutrality, dries, obtains modified sunflower seed shell
Adsorbent.
4. being modified the method for sunflower seed shell biological adsorption agent according to claim 1, it is characterised in that: step (2) is to take mesh
Number is the sunflower seed shells of 40~60 mesh, is added the ethylenediamine of 7mL by every gram of sunflower seed shell, 10mL distilled water, 0.3g sodium carbonate, in
It is filtered after reacting 2.5h under the conditions of 100 DEG C, is washed to neutrality, dried, obtain modified sunflower seed shell adsorbent.
5. the sunflower seed shell adsorbent as made from Claims 1 to 4 described in any item methods.
6. application of the sunflower seed shell adsorbent described in claim 5 in processing alizarin red dye wastewater.
7. utilizing the method for the processing alizarin red dye wastewater of sunflower seed shell adsorbent described in claim 5, which is characterized in that specific
Steps are as follows: being that sunflower seed shell adsorbent: wastewater quality body is pressed in 100~400mg/L alizarin red dye wastewater by mass concentration
Than being 0.5~5:1, unit g/L sunflower seed shell adsorbent is added, the pH for adjusting waste water is 2~14, then in 20~50 DEG C in product
2~6h of lower stirring or oscillation absorption.
8. according to the method described in claim 7, it is characterized by: the pH is 3.5.
9. according to the method described in claim 7, it is characterized by: further including the regeneration of sunflower seed shell adsorbent, tool after absorption
Body is that 0.2L ethyl acetate is added by 1g sunflower seed shell adsorbent in the sunflower seed shell adsorbent after adsorbing, and stirs 4h at 50 DEG C
?.
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| CN104801284A (en) * | 2015-04-30 | 2015-07-29 | 重庆工商大学 | Preparation method of alizarin red adsorbent, product and application |
| CN104815625A (en) * | 2015-04-30 | 2015-08-05 | 重庆工商大学 | Modified peanut shell adsorbent for treating sunset yellow dye wastewater and its preparing method and application thereof |
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Application publication date: 20190319 |