CN109647350A - With the standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather - Google Patents

With the standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather Download PDF

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Publication number
CN109647350A
CN109647350A CN201811440072.2A CN201811440072A CN109647350A CN 109647350 A CN109647350 A CN 109647350A CN 201811440072 A CN201811440072 A CN 201811440072A CN 109647350 A CN109647350 A CN 109647350A
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hami
melon skin
neutrality
hami melon
water
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CN109647350B (en
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梁玉峰
陈莉
李新
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Yuncheng University
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Yuncheng University
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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
    • 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
    • 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
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The present invention relates to a kind of with the standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather.The present invention, which mainly solves existing adsorbent processing dyeing and printing sewage, there is technical issues that removal effect is poor, is also easy to produce.The technical scheme is that a kind of standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather, the specific steps of which are as follows: 1) cleaning；2) it is sliced；3) boiling；4) ammonium oxalate impregnates: after Hami melon skin fragment after boiling is cooled to room temperature, being soaked in the ammonium oxalate solution that concentration is 0.5-2.0%, is placed in water-bath half an hour in 60-80 DEG C of thermostat water bath；5) it filters, rinse to neutrality；6) alkali steeps；7) hydrogen peroxide dipping；8) ethyl alcohol impregnates；9) it filters, rinse to neutrality: 10) is dry；11) it crushes.The present invention has the advantages that removal effect is preferable, realizes that waste resource recycles, price is low and is not likely to produce secondary pollution.

Description

With the standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather
Technical field
The present invention relates to a kind of with "Hami" melon leather for the method for removing methylene blue printing and dyeing substance biological adsorption agent, it belongs to A kind of production method of the ecosystem green bio adsorbent of environmental protection.
Background technique
In recent years, dyeing has become China industrial wastewater discharge rich and influential family, and waste discharge amount is about industrial wastewater The 35% of total emission volumn.Waste water from dyestuff has become important dirt because complicated component, concentration are high, color is deep, discharge amount is big Dye source.Methylene blue is a kind of alkaline matter, and being widely used in chemical indicator, dyestuff, biological stain (can be used for manufacturing Ink and color lake and biology, the dyeing of bacterial organisms etc.) and drug etc..Since the methylene blue solution of high concentration has Toxicity is handled in its discharge.It can be seen that all can if being expelled directly out such dyeing waste water to human body and environment High risks are caused, research shows that every discharge 1t dyeing waste water will pollute the water of 20t.
"Hami" melon unique flavor, melon meat is plump, fresh and crisp and full of nutrition, and sugar content is up to 21%, thus it is deep by People like.However while a large amount of enjoyment cuisines of "Hami" melon, Hami melon skin can all be treated as rubbish and throw away, and cause to environment It influences.In addition, the production and processing of "Hami" melon certainly will generate a large amount of processing byproduct, 40- can be generated after the juicing of "Hami" melon fruit 50% skin slag, traditional processing industry is by these by-product landfill disposals or produces and processes animal feed.Hami melon skin easily goes mouldy Smelly, landfill disposal can cause environment seriously to pollute, and processing feed usually need to be dried, and expend mass energy. For this purpose, many countries have carried out a large amount of explorations to the comprehensive Utilization Ways of Hami melon skin processing byproduct and have probed into.
Currently, the country to dyeing waste water based on biological treatment, account for 80% or more, accounted for especially with aerobic biological treatment big absolutely It is most.Aeration and contact oxidation method is accelerated to occupy the majority with surface in Dyeing and Printing Wastewater Biological Treatment method.In addition, blast aeration activity is dirty Mud method, jet-flow aeration activated sludge process, biological rotating disk etc. also have application, and biological fluidized bed is still in the tentative application stage, still Physical or chemical treatment need to be aided with.Wherein, conventional carbon production is to cause forest to provide for main victim with timber and coal Source large area is damaged and the serious pollution of ecological environment, or even influences the procreation of animals and plants.Active carbon, bamboo Charcoal Adsorption effect are opposite It is not high, and easily reach adsorption saturation state.The idea of development of low-carbon environment-friendly needs to find cheap and has preferable adsorption effect Adsorbent.Extensive favor of the biological adsorption agent due to cheap easy acquisition, by people.If consideration is made into biological suction Attached dose, environment is not only protected, but also greatly increases the added value of Hami melon skin.
Summary of the invention
Present invention aim to address existing adsorbent processing dyeing and printing sewage, that there is removal effects is poor, it is secondary to be also easy to produce The technical issues of pollution, provides a kind of standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather.
The present invention to solve above-mentioned technical problem and the technical solution adopted is that:
A method of methylene blue printing and dyeing substance biological adsorption agent being removed with "Hami" melon leather is standby, the specific steps of which are as follows:
1) it cleans: by fresh Hami melon skin wash with distilled water until solution is clarified；
2) it is sliced: clean Hami melon skin is cut into the fragment for being about 2-4cm；
3) fragmented Hami melon skin boiling 20-40min in boiled water will boiling: be cut；
4) ammonium oxalate impregnates: after Hami melon skin fragment after boiling is cooled to room temperature, being soaked in concentration is 0.5-2.0% Ammonium oxalate solution in, be placed in water-bath half an hour in 60-80 DEG C of thermostat water bath；
5) it filters, rinse to neutrality: by Hami melon skin debris filter after immersion, filter residue being taken to be rinsed with circulating water into Property；
6) alkali steeps: NaOH the water-bath 20-40min, bath temperature 60-80 for the filter residue 0.1-0.5mol/L that washing is obtained DEG C, it is rinsed with circulating water to neutrality after water-bath；
7) it hydrogen peroxide dipping: is sufficiently rinsed with distilled water to neutrality, uses hydrogen peroxide dipping 18-24h；
8) ethyl alcohol impregnates: Hami melon skin filter residue of hydrogen peroxide dipping being soaked in dehydrated alcohol, by Hami after 18-24h The filtering of melon skin filter residue, distilled water rinsing is until solution is in neutrality；
9) it filters, rinse to neutrality: Hami melon skin filter residue after rinsing being filtered, and is rinsed with circulating water to neutrality:
10) dry: rinsing to neutral Hami melon skin filter residue is placed in 60-70 DEG C, 6.67 × 102It is dry in Pa drying box To constant weight；
11) crush: the filter residue pulverizer after dry, which crushes, obtains finished product.
The beneficial effects of the present invention are: the present invention by discarded Hami melon skin carry out processing be prepared as it is a kind of novel primary The biological adsorption material of state carries out system to methylene blue adsorption number rate using the design of quadratic regression rotating orthogonal test combinations and grinds Study carefully, with the adsorption conditions of Hami melon skin biological adsorption agent, and by with the adsorption tests such as traditional active carbon, bamboo charcoal, diatom be pure Investigation and comparison, adsorption effect are superior to the above material；Thus, it provides fundamental basis for the application of "Hami" melon resource, is effective It purifies methylene blue pollution and reference is provided；The present invention, which puts into production, will realize that waste resource recycles, and obtain the treatment of wastes with processes of wastes against one another Win-win situation has positive effect the development of realization economic circulation and protection environment.
Detailed description of the invention
Fig. 1 is that present invention gained Hami melon skin biological adsorption agent is pure to Asia with active carbon, bamboo charcoal, diatom under the same conditions The comparison figure of methylene blue adsorption；
Fig. 2 is the scanning electron microscope (SEM) photograph after original Hami melon skin, present invention gained Hami melon skin biological adsorption agent and absorption；
Fig. 3 is the infrared spectrogram after original Hami melon skin, present invention gained Hami melon skin biological adsorption agent and absorption.
Specific embodiment
The present invention is described in further detail below with reference to embodiment.
Embodiment 1
One of the present embodiment standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather, tool Steps are as follows for body:
1) it cleans: by fresh Hami melon skin wash with distilled water until solution is clarified；
2) it is sliced: clean Hami melon skin is cut into the fragment for being about 3cm；
3) fragmented Hami melon skin boiling 30min in boiled water will boiling: be cut；
4) ammonium oxalate impregnates: after Hami melon skin fragment after boiling is cooled to room temperature, being soaked in the oxalic acid that concentration is 1% In ammonium salt solution, it is placed in water-bath half an hour in 70 DEG C of thermostat water baths；
5) it filters, rinse to neutrality: by Hami melon skin debris filter after immersion, filter residue being taken to be rinsed with circulating water into Property；
6) alkali steeps: the NaOH water-bath 30min for the filter residue 0.3mol/L that washing is obtained, and 70 DEG C of bath temperature, after water-bath It is rinsed with circulating water to neutrality；
7) it hydrogen peroxide dipping: is sufficiently rinsed with distilled water to neutrality, for 24 hours using hydrogen peroxide dipping；
8) ethyl alcohol impregnates: Hami melon skin filter residue of hydrogen peroxide dipping being soaked in dehydrated alcohol, for 24 hours afterwards by Hami melon skin Filter residue filtering, distilled water rinsing is until solution is in neutrality；
9) it filters, rinse to neutrality: Hami melon skin filter residue after rinsing being filtered, and is rinsed with circulating water to neutrality:
10) dry: rinsing to neutral Hami melon skin filter residue is placed in 70 DEG C, 6.67 × 102It is dried extremely in Pa drying box Constant weight；
11) crush: the filter residue pulverizer after dry, which crushes, obtains finished product.
The biological adsorption agent is verified to the adsorption effect of methylene blue below by comparative test.
(1) standard curve of methylene blue is measured；
(2) methylene blue initial concentration, pH value of solution, biological adsorption agent additional amount, life are obtained by experiment of single factor respectively Object adsorbent partial size, adsorption temp, six factors of adsorption time optimal adsorption point；
(3) adsorption effect pure with active carbon, bamboo charcoal, diatom under the same terms is compared；
(4) it is tested using three factors, five horizontal quadrature test combinations design method；
(5) three factors, five horizontal quadrature Combination Design test result is fitted using DPS software, obtains Hami melon skin Biological agent additional amount (X1), adsorption time (X2), methylene blue initial concentration (X3) to the orthogonal model of adsorption rate (Y)；
(6) using scanning electron microscope (SEM) and FTIR spectrum (FTIR) observational study Hami melon skin biological agent to alkali The green adsorption mechanism of property.
The instrument that this test is selected has: S-4800 scanning electron microscope (Hitachi, Japan), 27 Fourier's infrared light of TENSOR Spectrometer (German Brooker (Bruker) company), ultrasonoscope, UV-1102 ultraviolet specrophotometer (the U.S. scientific instrument in Shanghai day Co., Ltd).
Reagent has: distilled water, sodium hydroxide, ammonium oxalate.
Under the same conditions, by obtaining the adsorption effect of adsorbent with pure compare of active carbon, bamboo charcoal, diatom.
Gained Hami melon skin biological adsorption agent of the invention absorption comparative test pure with active carbon, bamboo charcoal, diatom: identical Under the conditions of, it is pure that Hami melon skin biological adsorption agent is all larger than active carbon, bamboo charcoal and diatom to the adsorption effect of methylene blue, wherein bamboo The adsorption effect of charcoal is only second to Hami melon skin biological adsorption agent (see Fig. 1).The reason of causing this result is their adsorption mechanism It is different.The pure characteristic of active carbon, bamboo charcoal, diatom determines its absorption category physical absorption to methylene blue, Hami melon skin biology Adsorbent main component is cellulose, and cellulose itself has good reticular structure, is in addition changed by ammonium oxalate and NaOH etc. Not only there is physical absorption, there is also chemistry to inhale there are gas chromatography matter in the melon skin biological adsorption agent of Hami after object processing It is attached.Hami melon skin biological adsorption agent removes methylene blue as adsorbent, overcomes and is also easy to produce secondary pollution and because of operating cost The disadvantages of excessively high with the cost of raw material.
1, Hami melon skin slag quadratic regression orthogonal rotational combination experiment result and analysis
1 factor level coding schedule of table
2 analysiss of variance table of table
The first time analysis of variance table of regression relation is shown in Table 2.As shown in Table 2, regression equation reaches significant, X2 2Reach extremely aobvious It writes, X1、X2Up to more significant.Some other also have certain conspicuousness to varying degrees.
2, the foundation and inspection of model
Using DPS data processing experimental result, analysis obtains adsorbent amount (X1), adsorption time (X2), initial concentration (X3), the mathematical model regression equation of adsorption rate (Y) are as follows:
Y=95.50613+0.21844X1+0.39950X2-1.16814X3-1.04100X1 2-0.26672X2 2- 0.10409X3 2-0.01500X1X2+0.27500X1X3+0.18250X2X3
Under conditions of the level of signifiance is 0.10, FIt loses quasi-=0.42656 < F0.01(5,8)=6.63, show X factor to reality Testing result influences very little, can ignore substantially；FIt returns=5.32282 > F0.01(9,13)=4.19, reach 1% extremely significant level, Illustrate that model is set up.Predicted value and reality are coincide preferably, therefore carry out forecasting feasibility with higher with this model.
3 two analysiss of variance table of table
To regression coefficient carry out significance test, α=0.10 level on can reject not significant item, by residual term again into Row variance analysis, is shown in Table 3.Obtain simplified regression equation (α=0.10) Y=95.50613-1.16814X3-1.04100X1 2
3, optimum organization and verifying
Experimental data is analyzed using DPS software, show that the level of three factors takes in point when Y value is Max (0, -1.682, -1.682), i.e. adsorbent 1.2g, adsorption time 60min, initial concentration 120mg/L.At this point, the absorption of prediction Rate Ymax is 97.47%.Under this adsorption conditions, show that adsorption rate is 98.63% by verifying, actual value/predicted value= 1.01, close to 1, illustrate that this model is set up.
4, adsorption effect compares
By Fig. 1 show quantity of sorbent be 1g, methylene blue initial concentration be respectively 20,40,50mg/L, absorption Under conditions of time is 1h, the adsorption effect of present invention gained Hami melon skin biological adsorption agent be superior to active carbon, diatom water shield and Bamboo charcoal.
3 analysis of variance table of table (Duncan method)
The influence (Duncan method) that 4 different materials of table adsorb malachite green
From table 3, table 4: through F inspection obtain different adsorbent materials, different methylene blue solution concentration and material with it is dense There is 1% horizontal extremely significant difference (F in the interaction between degreeMaterial=7684.2860, P=0.0001 < P=0.01；FConcentration= 408.6730 P=0.0001 < P=0.01；FMaterial x concentration=30.5300, P=0.0001 < P=0.01), Hami melon skin biology is inhaled The attached dose of removal rate to methylene blue is better than other materials extremely significantly in 1% level, and wherein active carbon effect is taken second place, bamboo charcoal Poor, the pure removal effect of diatom is worst.
4, scanning electron microscope analysis
A, b, c are original Hami melon skin slag, optimal Hami melon skin biological adsorption agent and absorption methylene blue respectively in Fig. 2 SEM figure afterwards.As shown in Figure 2, original Hami melon skin slag surface void is less, smoother, Hami melon skin after optimal processing Biological adsorption agent surface void is larger, and rough porous has fold, these structures are the active sites of adsorption reaction, is conducive to Asia The absorption of methyl blue.After absorption, Hami melon skin biological adsorption agent surface is smoother compared with optimal, and hole is few, illustrates gap It is filled by methylene blue pollutant.It is found that Hami melon skin biological adsorption agent of optimization processing is certain to being adsorbed with for methylene blue Physisorption.
5, infrared spectrum analysis
The infrared spectrogram of Hami melon skin slag is as shown in Figure 3；It is 3401cm in wave crest-1Place is the stretching vibration of OH, by this After (2), absorption there is-OH in Hami melon skin slag of (3) before original (1) at place, absorption, and quantity increases after-OH absorption, says Bright modification process can fall the material damages such as the carbohydrate protein of encirclement-OH, and favorably it is in adsorption process from gap Middle reaches are walked to be adsorbed, and-OH is capable of forming hydrogen bond in adsorption process (hydrogen bond has good adsorption capacity)；Contain in the melon skin of Hami There is glucide and content is higher than protein matter, so stretching vibration of the NH at this is covered by OH；2364cm-1Place is carbon Three key stretching vibration of carbon, three keys are reduced after modified absorption, and the variation tendency from the way finds out that triple carbon-carbon bonds are in modifying process Part is destroyed, most of in absorption to be destroyed again, therefore important function has been played in absorption；Original Hami melon skin In 1637m-1Place is the flexible vibration of carbon-carbon double bond, and modified image peak value moves to right enhancing, disappears after absorption, illustrates that it is also played Suction-operated；In 1074m-1Place is to disappear after the flexible vibration of carbon-oxygen bond is modified absorption, illustrates not play suction-operated.
In conclusion in the melon skin biological adsorption agent adsorption process of Hami ,-OH, triple carbon-carbon bonds, carbon-carbon double bond, amide N base Group and C-O take part in adsorption process.
Embodiment 2
One of the present embodiment standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather, tool Steps are as follows for body:
1) it cleans: by fresh Hami melon skin wash with distilled water until solution is clarified；
2) it is sliced: clean Hami melon skin is cut into the fragment for being about 2cm；
3) fragmented Hami melon skin boiling 20min in boiled water will boiling: be cut；
4) ammonium oxalate impregnates: after Hami melon skin fragment after boiling is cooled to room temperature, being soaked in the grass that concentration is 0.5% In acid ammonium solution, it is placed in water-bath half an hour in 80 DEG C of thermostat water baths；
5) it filters, rinse to neutrality: by Hami melon skin debris filter after immersion, filter residue being taken to be rinsed with circulating water into Property；
6) alkali steeps: the NaOH water-bath 20min for the filter residue 0.5mol/L that washing is obtained, and 60 DEG C of bath temperature, after water-bath It is rinsed with circulating water to neutrality；
7) it hydrogen peroxide dipping: is sufficiently rinsed with distilled water to neutrality, uses hydrogen peroxide dipping 18h；
8) ethyl alcohol impregnates: Hami melon skin filter residue of hydrogen peroxide dipping being soaked in dehydrated alcohol, by Hami melon skin after 18h Filter residue filtering, distilled water rinsing is until solution is in neutrality；
9) it filters, rinse to neutrality: Hami melon skin filter residue after rinsing being filtered, and is rinsed with circulating water to neutrality:
10) dry: rinsing to neutral Hami melon skin filter residue is placed in 60 DEG C, 6.67 × 102It is dried extremely in Pa drying box Constant weight；
11) crush: the filter residue pulverizer after dry, which crushes, obtains finished product.
Embodiment 3
One of the present embodiment standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather, tool Steps are as follows for body:
1) it cleans: by fresh Hami melon skin wash with distilled water until solution is clarified；
2) it is sliced: clean Hami melon skin is cut into the fragment for being about 4cm；
3) fragmented Hami melon skin boiling 40min in boiled water will boiling: be cut；
4) ammonium oxalate impregnates: after Hami melon skin fragment after boiling is cooled to room temperature, being soaked in the grass that concentration is 2.0% In acid ammonium solution, it is placed in water-bath half an hour in 60 DEG C of thermostat water baths；
5) it filters, rinse to neutrality: by Hami melon skin debris filter after immersion, filter residue being taken to be rinsed with circulating water into Property；
6) alkali steeps: the NaOH water-bath 40min for the filter residue 0.1mol/L that washing is obtained, and 65 DEG C of bath temperature, after water-bath It is rinsed with circulating water to neutrality；
7) it hydrogen peroxide dipping: is sufficiently rinsed with distilled water to neutrality, uses hydrogen peroxide dipping 21h；
8) ethyl alcohol impregnates: Hami melon skin filter residue of hydrogen peroxide dipping being soaked in dehydrated alcohol, by Hami melon skin after 21h Filter residue filtering, distilled water rinsing is until solution is in neutrality；
9) it filters, rinse to neutrality: Hami melon skin filter residue after rinsing being filtered, and is rinsed with circulating water to neutrality:
10) dry: rinsing to neutral Hami melon skin filter residue is placed in 65 DEG C, 6.67 × 102It is dried extremely in Pa drying box Constant weight；
11) crush: the filter residue pulverizer after dry, which crushes, obtains finished product.
The present invention is not limited to the above embodiments, without departing from the scope of the invention, according to the above description into Capable improvement and transformation all should belong to the protection scope of the claims in the present invention.

Claims (1)

1. a kind of standby method for removing methylene blue printing and dyeing substance biological adsorption agent of "Hami" melon leather, characterized in that specific steps It is as follows:
1) it cleans: by fresh Hami melon skin wash with distilled water until solution is clarified；
2) it is sliced: clean Hami melon skin is cut into the fragment for being about 2-4cm；
3) fragmented Hami melon skin boiling 20-40min in boiled water will boiling: be cut；
4) ammonium oxalate impregnates: after Hami melon skin fragment after boiling is cooled to room temperature, being soaked in the grass that concentration is 0.5-2.0% In acid ammonium solution, it is placed in water-bath half an hour in 60-80 DEG C of thermostat water bath；
5) it filters, rinse to neutrality: by Hami melon skin debris filter after immersion, filter residue being taken to be rinsed with circulating water to neutrality；
6) alkali steeps: by the washing obtained filter residue NaOH water-bath 20-40min of 0.1-0.5mol/L, 60-80 DEG C of bath temperature, It is rinsed with circulating water to neutrality after water-bath；
7) it hydrogen peroxide dipping: is sufficiently rinsed with distilled water to neutrality, uses hydrogen peroxide dipping 18-24h；
8) ethyl alcohol impregnates: Hami melon skin filter residue of hydrogen peroxide dipping being soaked in dehydrated alcohol, by Hami melon skin after 18-24h Filter residue filtering, distilled water rinsing is until solution is in neutrality；
9) it filters, rinse to neutrality: Hami melon skin filter residue after rinsing being filtered, and is rinsed with circulating water to neutrality:
10) dry: rinsing to neutral Hami melon skin filter residue is placed in 60-70 DEG C, 6.67 × 102It dries in Pa drying box to perseverance Weight；
11) crush: the filter residue pulverizer after dry, which crushes, obtains finished product.
CN201811440072.2A 2018-11-29 2018-11-29 Method for preparing methylene blue printing dye removal substance biological adsorbent by using Hami melon peels Active CN109647350B (en)

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