CN106215882B - It is a kind of for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff - Google Patents
It is a kind of for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff Download PDFInfo
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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
- 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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Abstract
For handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, preparation method simple process of the present invention, preparation cost is low the invention discloses a kind of, and adsorbent material obtained has the advantages that large specific surface area, chemical stability are good, adsorption effect is good and easily regeneration；Compared to similar adsorbent, adsorbent material adsorption effect produced by the present invention is more preferable, in acid condition, can reach 279.06mg/g to the adsorbance of reactive brilliant red, is 4 times of equivalent amount of active carbon adsorbent adsorption capacity.
Description
Technical field
The present invention relates to a kind of for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, belongs to sorbent material
Preparation technical field.
Background technique
Containing a large amount of dyestuff, auxiliary agent, slurry, soda acid and inorganic salts etc. in dyeing waste water, its main feature is that complicated composition, having
Machine object content height, basicity height, coloration depth, temperature height, biodegradability difference etc..The organic matter of dyeing waste water enters environment with waste water
The original ecological balance of water body will be broken, be contaminated water body；The color of dyeing waste water is deep, is unfavorable for the life of aquatile
It is long；Dyeing waste water enters farmland, it will aggravates salinization of soil degree.The method of processing waste water from dyestuff has electrochemical process, oxygen
Change method, membrane separation process, biological treatment and active carbon adsorption etc..Wherein activated carbon adsorption because its method it is simple, operation is simple
Have become most widely used dye wastewater treatment technology at present with many advantages such as removal efficiency height, but consumption it is big, it is at high cost and
Regeneration can generate secondary pollution etc. and limit its further development and application.Common adsorbent is generally also classified into organic matter and inorganic
Two class of object, organic species such as wheat-germ meal, bran, soybean fine powder and bibulous cereals etc.；Inorganic species then include
Vermiculite, silica and calcium silicates etc..Most representative adsorbent is active carbon, and absorption property is good, but cost is relatively high,
Also recycling is difficult simultaneously.Biological material class adsorbent is a kind of emerging sorbent material, because the material source that it has is wide,
The features such as at low cost and easy to be modified, more and more researchs are obtained.
A kind of patent CN102631892A, dye sorbent made of banana skin, is beaten after first cleaning banana skin, is sent into
Fermentor, then in inoculation strain, ventilating fermentation obtains banana leather after cleaning finally in the solid portion for collecting fermentor
At dye sorbent.Whole process is relatively complicated, and adsorbance is to be improved.M.V.Sureshkuma et al. is in Colloids
It is delivered in 317 (2008) 277-283 periodical of and Surfaces A:Physicochem.Eng.Aspects
“Adsorption behavior of Direct Red 12B and Rhodamine B from water onto
In a surfactant-modified coconut coir pith " text, using the modified coconut of cetab
Shell studies influence of the modified material to the Adsorption effect of rhodamine B, and adsorption capacity is respectively 14.9mg/g.Although its
Production method is simple, and the cost of material is low for abandoned biomass, but its adsorption effect is unobvious.Zhu Zhenhua et al. is in Jiangsu's agriculture section
It learns, 2015 (5): in " absorption of the modified orange peel to the water neutral and alkali magenta " text delivered in 334-336 periodical, using orange peel as base
Matter, use NaOH to be modified it the result shows that: modified adsorption rate is increased than removal rate before modified for 87.32%
54.66%.
Summary of the invention
Goal of the invention: the watermelon peel suction that technical problem to be solved by the invention is to provide a kind of for handling waste water from dyestuff
Attached dose of preparation method, adsorbent made from this method has large specific surface area, chemical stability is good, adsorption effect is good and it is easy again
Raw advantage.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:
It is a kind of for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, include the following steps:
Step 1, it prepares watermelon peel powder: the watermelon peel of recycling being cut into block and is placed in 1~3h of boiling in deionized water, it is cooling
Watermelon skin bit is placed in the ethanol solution that concentration expressed in percentage by volume is 40%~60% afterwards and impregnates 3~5h, cleaned, dried after immersion
It does, smashed 80 meshes and obtain watermelon peel powder；
Step 2, mass concentration is used to carry out at alkali for 15%~25% sodium hydroxide to the watermelon peel powder of step 1
Reason, by the watermelon peel powder cleaning after alkalization, drying after processing a period of time；
Step 3, the dichloropropane that the watermelon peel powder after step 2 alkalization is 15%~20% with concentration expressed in percentage by volume is set
Heating reaction a period of time in 40 DEG C~60 DEG C water-baths；
Step 4, four ethylene five for being 20%~40% with concentration expressed in percentage by volume by the watermelon peel powder after step 3 reaction
Amine is placed in reaction 90min~180min in 60 DEG C~90 DEG C water-baths；
Step 5, the water outlet pH product after step 4 reaction cleaned with deionized water to cleaning is neutrality, after cleaning
The drying to obtain watermelon peel adsorbent at 60 DEG C~80 DEG C.
Wherein, in step 1, the drying temperature is 80 DEG C~105 DEG C.
Wherein, in step 1, the area of the watermelon skin bit is 5 square centimeters.
Wherein, in step 2, the time of the alkali process is 20min~35min.
Wherein, in step 3, the reaction time is 90min~180min.
Compared with prior art, technical solution of the present invention has the beneficial effect that
Preparation method simple process of the present invention, preparation cost is low, and adsorbent material obtained has large specific surface area, chemistry steady
The advantages of qualitative good, adsorption effect is good and easily regenerates；Compared to similar adsorbent, adsorbent material adsorption effect produced by the present invention
More preferably, in acid condition, 279.06mg/g can reach to the adsorbance of reactive brilliant red, is the absorption of equivalent amount of active carbon adsorbent
4 times of capacity.
Detailed description of the invention
Fig. 1 is the scanning electron microscope phenogram of watermelon peel adsorbent made from embodiment 1；
Fig. 2 is that watermelon peel adsorbent made from embodiment 1 is influenced result figure by pH value to reactive brilliant red adsorption effect；
Fig. 3 is that watermelon peel adsorbent made from embodiment 1 is influenced result figure by the time to reactive brilliant red adsorption effect；
Fig. 4 is that watermelon peel adsorbent made from embodiment 1 is influenced result by initial soln concentration to reactive brilliant red absorption
Figure.
Specific embodiment
Technical solution of the present invention is described further in the following with reference to the drawings and specific embodiments.
Embodiment 1
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 2h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 50% (v/v), impregnates 3h, is cleaned after immersion using deionized water and is dried at 80 DEG C
It is dry, smashed 80 meshes again and obtain watermelon peel powder；Ethyl alcohol can disinfection and sterilization, prevent pesticide and other substances to the shadow of material
It rings；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 15% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 20min；What alkali process can remove cell wall retains moisture；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 40 with volume fraction for the dichloropropane of 15% (v/v)
Heating reaction 180min in DEG C water-bath；Dichloropropane is crosslinking agent, keeps modified substance more stable；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 30% (v/v)
120min is reacted in 70 DEG C of water-baths；
Step 5, the water outlet pH product after step 4 reaction cleaned with deionized water to cleaning is neutrality, after cleaning
The drying to obtain watermelon peel adsorbent at 60 DEG C.
Embodiment 2
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 1h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 40% (v/v), impregnates 3h, is cleaned after immersion using deionized water and is dried at 90 DEG C
It is dry, smashed 80 meshes again and obtain watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 20% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 30min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 50 with volume fraction for the dichloropropane of 18% (v/v)
Heating reaction 90min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 40% (v/v)
180min is reacted in 90 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 60 DEG C after cleaning
Obtain watermelon peel adsorbent.
Embodiment 3
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 3h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 50% (v/v), impregnates 3h, using deionized water cleaning and at 105 DEG C after immersion
Drying smashed 80 meshes again and obtains watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 25% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 35min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 60 with volume fraction for the dichloropropane of 20% (v/v)
Heating reaction 120min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 20% (v/v)
90min is reacted in 60 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 60 DEG C after cleaning
Obtain watermelon peel adsorbent.
Embodiment 4
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 2h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 50% (v/v), impregnates 5h, is cleaned after immersion using deionized water and is dried at 80 DEG C
It is dry, smashed 80 meshes again and obtain watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 20% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 25min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 50 with volume fraction for the dichloropropane of 18% (v/v)
Heating reaction 90min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 40% (v/v)
120min is reacted in 70 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 60 DEG C after cleaning
Obtain watermelon peel adsorbent.
Embodiment 5
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 2h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 60% (v/v), impregnates 3h, is cleaned after immersion using deionized water and is dried at 90 DEG C
It is dry, smashed 80 meshes again and obtain watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 20% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 20min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 40 with volume fraction for the dichloropropane of 15% (v/v)
Heating reaction 120min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 30% (v/v)
120min is reacted in 70 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 80 DEG C after cleaning
Obtain watermelon peel adsorbent.
Embodiment 6
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 2h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 50% (v/v), impregnates 4h, using deionized water cleaning and at 105 DEG C after immersion
Drying smashed 80 meshes again and obtains watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 15% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 30min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 60 with volume fraction for the dichloropropane of 20% (v/v)
Heating reaction 90min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 20% (v/v)
120min is reacted in 70 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 80 DEG C after cleaning
Obtain watermelon peel adsorbent.
Embodiment 7
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 1h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 40% (v/v), impregnates 4h, is cleaned after immersion using deionized water and is dried at 80 DEG C
It is dry, smashed 80 meshes again and obtain watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 15% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 35min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 50 with volume fraction for the dichloropropane of 18% (v/v)
Heating reaction 180min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 20% (v/v)
120min is reacted in 70 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 80 DEG C after cleaning
Obtain watermelon peel adsorbent.
Embodiment 8
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 3h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 50% (v/v), impregnates 4h, is cleaned after immersion using deionized water and is dried at 80 DEG C
It is dry, smashed 80 meshes again and obtain watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 15% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 30min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 60 with volume fraction for the dichloropropane of 15% (v/v)
Heating reaction 180min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 30% (v/v)
90min is reacted in 70 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 70 DEG C after cleaning
Obtain watermelon peel adsorbent.
Embodiment 9
The present invention is used to handle the preparation method of the watermelon peel adsorbent of waste water from dyestuff, includes the following steps:
Step 1, it prepares watermelon peel powder: the red pulp part on the watermelon peel of recycling being removed, red will be removed
The watermelon peel of pulp fraction is cut into the fritter that area is 5 square centimeters and is placed in boiling 2h in deionized water, by watermelon peel after cooling
Block, which is placed in the ethanol solution of volume fraction 50% (v/v), impregnates 4h, is cleaned after immersion using deionized water and is dried at 80 DEG C
It is dry, smashed 80 meshes again and obtain watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process for watermelon peel powder of the sodium hydroxide of 15% (w/v) to step 1
Watermelon peel powder after alkalization is spent ionized water cleaning, drying by 30min；
Step 3, the watermelon peel powder after step 2 alkalization is placed in 40 with volume fraction for the dichloropropane of 15% (v/v)
Heating reaction 120min in DEG C water-bath；
Step 4, the watermelon peel powder after step 3 reaction is set with volume fraction for the tetraethylenepentamine of 40% (v/v)
180min is reacted in 70 DEG C of water-baths；
Step 5, it is neutral for the product after step 4 reaction being cleaned with deionized water to pH, dry at 70 DEG C after cleaning
Obtain watermelon peel adsorbent.
Adsorption experiment: the dyestuff that the present invention uses weighs 0.035g watermelon peel adsorbent and 50ml, dense is added for reactive brilliant red
Degree is in the reactive brilliant red solution of 200mg/L；It is put into constant temperature oscillation case and is vibrated 3 hours at 25 DEG C, it is flat to reach absorption
Weighing apparatus；Its absorbance is finally surveyed using visible-ultraviolet specrophotometer, is converted to obtain its concentration by reactive brilliant red graticule.According to (1)
Formula calculates adsorption capacity:
Wherein, Q: adsorbance (mg/g) of the watermelon peel adsorbent to reactive brilliant red；C0: initial activity bright red concentration (mg/
L)；Ce: reactive brilliant red concentration (mg/L) after absorption；V: liquor capacity containing reactive brilliant red (ml)；W: watermelon peel adsorbent is added
Quality (g).
Watermelon peel adsorbent and active carbon made from Examples 1 to 9 are used to remove reactive brilliant red in dyeing waste water
It removes, adsorption experiment condition is as follows:
The dosage of watermelon peel adsorbent is 0.7g/L, and the dosage of active carbon is 0.7g/L, Active Red Dye waste liquid
Initial concentration is 200mg/L, adds the suction of watermelon peel made from Examples 1 to 9 respectively into the dye solution of ten groups of parallel tests
Attached dose and active carbon vibrate 3h, hunting speed 180rpm in 25 DEG C of constant temperature oscillators.It is to be adsorbed reach balance after, take out
Solution is filtered using 0.45 μm of water system filter, finds out adsorbance according to formula (1).
The adsorbance such as following table of watermelon peel adsorbent made from Examples 1 to 9 and active carbon to Active Red Dye solution
It is shown:
。
Watermelon peel adsorbent made from embodiment 1 is at different conditions to the adsorption experiment of Active Red Dye:
(1) influence of pH:
0.035g watermelon peel adsorbent material is weighed, is added in the Active Red Dye solution of 50ml concentration 200mg/L, adopts
With hydrochloric acid and sodium hydrate regulator solution from pH, make the pH range of solution between 3.8~9.8.Using 25 DEG C of constant temperature oscillation casees,
180rpm is set and vibrates absorption 3h.As shown in Fig. 2, watermelon peel adsorbent is initial by solution to the adsorption effect of Active Red Dye
PH's is affected, and adsorbance and removal rate are reduced with the increase of pH.
(2) influence of adsorption time:
0.035g watermelon peel adsorbent material is weighed, is added in the Active Red Dye solution of 50ml concentration 200mg/L, adopts
With 25 DEG C of constant temperature oscillation casees, 180rpm is set and vibrates absorption 0min~360min.As shown in figure 3, watermelon peel adsorbent is to activity
The adsorbance and removal rate of bright red dyestuff increase with the increase of adsorption time, 0~120min rate of adsorption quickly, 120~
The 180min rate of adsorption slows down, and adsorption equilibrium is basically reached after 180min.
(3) influence of dyestuff initial concentration:
0.035g watermelon peel adsorbent material is weighed, the Active Red Dye solution of 50~300mg/L of 50ml concentration is added to
In.Using 25 DEG C of constant temperature oscillation case, 180rpm is set and vibrates absorption 3h.As shown in figure 4, watermelon peel adsorbent is to reactive brilliant red
The adsorbance of dyestuff increases with the increase of dyestuff initial concentration, and removal rate reduces with the increase of dyestuff initial concentration.
Sodium hydroxide alkali process can make modifying agent (tetraethylenepentamine) that can be easier to be grafted onto watermelon in the method for the present invention
Pi Shang, excessively may excess destruction raw material and the absorption property of material is declined；Dichloropropane is crosslinking agent, can be made
The substance of grafting is more stable, excessively adsorbent intensity can be made to be lower, become fragile；Group is grafted on raw material by tetraethylenepentamine.
Claims (5)
1. a kind of for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, which comprises the steps of:
Step 1, it prepares watermelon peel powder: the watermelon peel of recycling being cut into block and is placed in 1~3h of boiling in deionized water, it will after cooling
Watermelon skin bit be placed in concentration expressed in percentage by volume be 40%~60% ethanol solution in impregnate 3~5h, after immersion through cleaning, drying,
It smashed 80 meshes and obtains watermelon peel powder；
Step 2, mass concentration is used to carry out alkali process, place to the watermelon peel powder of step 1 for 15%~25% sodium hydroxide
By the watermelon peel powder cleaning after alkalization, drying after reason a period of time；
Step 3, the dichloropropane that the watermelon peel powder after step 2 alkalization is 15%~20% with concentration expressed in percentage by volume is placed in 40
DEG C~60 DEG C of water-baths in heating reaction a period of time；
Step 4, the tetraethylenepentamine that the watermelon peel powder after step 3 reaction is 20%~40% with concentration expressed in percentage by volume is set
90min~180min is reacted in 60 DEG C~90 DEG C water-baths；
Step 5, the water outlet pH product after step 4 reaction cleaned with deionized water to cleaning is neutrality, in 60 after cleaning
DEG C~80 DEG C at drying to obtain watermelon peel adsorbent.
2. according to claim 1 for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, it is characterised in that:
In step 1, the drying temperature is 80 DEG C~105 DEG C.
3. according to claim 1 for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, it is characterised in that:
In step 1, the area of the watermelon skin bit is 5 square centimeters.
4. according to claim 1 for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, it is characterised in that:
In step 2, the time of the alkali process is 20min~35min.
5. according to claim 1 for handling the preparation method of the watermelon peel adsorbent of waste water from dyestuff, it is characterised in that:
In step 3, the reaction time is 90min~180min.
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| KR102537401B1 (en) | 2021-07-20 | 2023-05-26 | 가톨릭관동대학교 산학협력단 | Method of manufacturing adsorption material of methylene blue and adsorption material of methylene blue manufactured by the same |
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| WO2014012134A1 (en) * | 2012-07-18 | 2014-01-23 | University Of Technology, Sydney | Biosorbent for heavy metal removal |
| CN102989433A (en) * | 2012-12-11 | 2013-03-27 | 浙江农林大学 | Production method of bamboo powder-amino acid type adsorption material |
| CN104607157A (en) * | 2015-01-12 | 2015-05-13 | 哈尔滨工业大学 | Method for preparing heavy metal complexing fiber by quickly modified jute through microwaves and application of fiber |
| CN105148858A (en) * | 2015-08-25 | 2015-12-16 | 安徽省中日农业环保科技有限公司 | Watermelon peel containing heavy metal adsorbent and preparation method thereof |
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| KR102537401B1 (en) | 2021-07-20 | 2023-05-26 | 가톨릭관동대학교 산학협력단 | Method of manufacturing adsorption material of methylene blue and adsorption material of methylene blue manufactured by the same |
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