CN103566909B - A kind of preparation method of citric acid cotton stalk skin and application - Google Patents
A kind of preparation method of citric acid cotton stalk skin and application Download PDFInfo
- Publication number
- CN103566909B CN103566909B CN201310560830.5A CN201310560830A CN103566909B CN 103566909 B CN103566909 B CN 103566909B CN 201310560830 A CN201310560830 A CN 201310560830A CN 103566909 B CN103566909 B CN 103566909B
- Authority
- CN
- China
- Prior art keywords
- cotton stalk
- citric acid
- skin
- stalk skin
- room temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention discloses a kind of citric acid cotton stalk peel preparation method and application technology, feature is: in the reactor, adds, deionized water: 40 ~ 75% by following composition mass percent; Citric acid: 10 ~ 35%, inferior sodium phosphate: 2 ~ 10%, come unstuck cotton stalk skin: 8 ~ 20%, room temperature reaction 2 ~ 6h, heats up 60 ~ 70 DEG C, reaction 20 ~ 30h, be warming up to 130 DEG C, reaction 2 ~ 4h, after cooling, spend deionized water, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 10 ~ 20%, all be dipped in solution with solid and be as the criterion, suction filtration, with the Adlerika washing of 2 ~ 4%, dry, obtain citric acid cotton stalk skin adsorbent.Can directly to the absorption of dyestuff various in water body, adsorption efficiency is high, and the speed of absorption is fast, and power of regeneration by force can Reusability, is the waste utilization of cotton stalk, has not only provided cost savings but also environmental protection.
Description
Technical field
The invention belongs to chemosynthesis technical field, relate to preparation method and the application technology of citric acid cotton stalk skin, specifically a kind of application technology prepared citric acid cotton stalk skin method and organic dyestuff in water body is adsorbed.
Background technology
China is Chan Mian big country in the world, sown areas of cotton more than 50 ten thousand hectares.Cotton stalk is the discarded object after cotton grower wins cotton, and cotton stalk skin is a kind of excellent bast of growth on cotton stalk surface.Cotton stalk is produced at about 4000kg in per hectare cotton field, and cotton stalk skin accounts for about 26%, and the cotton stalk annual production of China reaches more than 1,500 ten thousand tons, has cotton stalk skin about more than 400 ten thousand tons, with the cotton stalk skin resource of this China and abundant.Cotton stalk is as agricultural residue, and mostly burn as fuel in rural area, all the other cannot utilize and become waste material, very unfortunately.Made full use of these and can create considerable economic benefit, we utilize cotton stalk hide fiber element synthesizing new adsorbent for the absorption of Heavy Metals in Waters ion, make this adsorbent have natural, green, biodegradable feature.
Along with the fast development of industry, the consumption of dyestuff is also increasing, and synthetic dyestuffs, compared with natural dye, have the advantage such as easy to use, stable in properties, cost are low, wide in variety and are widely used in weaving, papermaking, pharmacy and food industry.Waste water from dyestuff has become China's at present one of main pollutant effluents, and solving problem of environmental pollution is very urgent problems.The structure of current most of synthetic dyestuffs has complicated aromatic ring structure, and character is very stable, is difficult to biodegradation.These dyestuffs can threaten to the health of the mankind, enter food chain, may cause the allergy of people, the various injuries such as the sudden change of cancer and gene.What the widely using of dyestuff caused dye wastewater is discharged in natural water in a large number, cause I i of water body right, even if a small amount of waste water from dyestuff discharge also can cause water body painted, the heavy damage natural, ecological chain of water body, also greatly reduces the economic worth of water body simultaneously.Therefore, the dyestuff how removed in industrial wastewater is the focus of domestic and international experts and scholars research.In the industrial production, waste water from dyestuff adopts flocculence, oxidizing process, biological treatment, membrane filter method, absorption method etc. usually.Wherein absorption method has technique simply, and adsorption rate is high, applied widely, and the features such as stable in properties are used widely in sewage disposal.
Since the nineties in 20th century, people utilize natural fiber cheap and easy to get in the process of waste water from dyestuff, to obtain more research as adsorbent.Neha Gupta etc. have studied methylene blue in potato stalk adsorbed water and malachite green, its maximum adsorption capacity is: 52.6mg/g, (Neha Gupta, Application of potato (Solanum tuberosum) plant wastes for the removal of methylene blue and malachite green dye from aqueous solution. Arabian Journal of Chemistry, (2011)); Runping Han etc. have studied the fallen leaves of Chinese parasol tree tree to the methylene blue adsorption number in water, its maximum adsorption capacity is: 89.7mg/g, (Runping Han, Biosorption of methylene blue from aqueous solution by fallen phoenix tree ' s leaves. Journal of Hazardous Materials, 141 (2007) 156 – 162); Gong Xinhuai etc., have studied citric acid-modified bamboo bits absorption methylene blue, it to the maximum adsorption capacity of methyl blue is: 125mg/g, (Gong Xinhuai etc., the dynamics of citric acid-modified bamboo bits absorption methylene blue and thermodynamic analysis, Yichun College's journal, 2012,34(8), 47 ~ 49); Poplar is superfine, and peanut hull meal removes the research of azo dyes in the aqueous solution as biological adsorption agent, biology magazine, 2005,22(2) 45 ~ 48; Li Ronghua etc., have studied citric acid-modified orange skin to the absorption of methyl blue in water, it to the maximum adsorption capacity of methyl blue is: 189.92mg/g, (Li Ronghua etc., citric acid-modified orange skin to the absorption of methyl blue in water, Journal of Northwest Sci Tech University of Agriculture and Forestry (natural science edition), 2009,37(10), 173 ~ 179); Chinese Patent Application No. is: the preparation method and the application that disclose a kind of citric acid modified rape straw adsorbent in the patent of 201110208310.9, it is characterized in that, the rape straw 20% isopropyl alcohol immersion 24h that wash clean is also dry, the soaking with sodium hydroxide of 0.1mol/L is used again after being separated drying, stirring reaction 1 h, be washed to pH=7, dry, 30min is reacted again with the citric acid stirring at room temperature of 0.5mol/L, be warming up to 50 DEG C of forced air drying 24 h, thermalization reaction 90min under the 120 DEG C of air blast conditions that heat up again, cooling washing; These agriculture and forestry are discarded the adsorbent being utilized as water treatment and are had the advantages such as renewable, degradable, environmental protection be friendly, cheap, important living resources, but also come with some shortcomings part, as their bad mechanical strength, easily corrode in water, the reusable number of times of adsorbent is very low, and adsorption capacity is limited.
Summary of the invention
An object of the present invention is to provide a kind of citric acid cotton stalk peel preparation method, mainly makes the citric acid cotton stalk skin of acquisition larger as the adsorbance of the adsorbent of organic dyestuff in aqueous systems.
Object of the present invention is achieved through the following technical solutions.
A kind of citric acid cotton stalk skin sorbent preparation method, is characterised in that the method has following processing step:
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 24 ~ 36 h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: be urea liquid and 1 ~ 2% hydrogen peroxide mixed solution soaking at room temperature 20 ~ 30min of 1.0 ~ 4.0% by pretreatment cotton stalk skin mass percentage concentration, the solid-to-liquid ratio of the cotton stalk skin of pretreatment and mixed solution is 1g:4.0 ~ 15mL, soak after, suction filtration, washing, be 0.5 ~ 0.8mol/LNaOH solution soaking at room temperature 5 ~ 10 h by concentration, boil 30 ~ 40 min again, spend deionized water after cooling to neutral, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the reactor, adds by following composition mass percent, deionized water: 40 ~ 75%; Citric acid: 10 ~ 35%, inferior sodium phosphate: 2 ~ 10%, come unstuck cotton stalk skin: 8 ~ 20%, room temperature reaction 2 ~ 6 h, heats up 60 ~ 70 DEG C, reaction 20 ~ 30 h, be warming up to 130 DEG C, reaction 2 ~ 4 h, after cooling, spend in deionized water to washing lotion and exist without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 10 ~ 20%, is all dipped in solution is as the criterion with solid, soaks 6.5 ~ 10 h under room temperature, suction filtration, with the Adlerika washing of 2 ~ 4%, 80 ~ 100 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Another object of the present invention is to provide the cotton stalk skin adsorbent of a kind of lemon acid to the application in basic-dyeable fibre absorption in aqueous systems, and feature is: the cotton stalk skin adsorbent deionized water of lemon acid prepared is soaked 30 ~ 50 min, adsorbs by static method.
The cotton stalk skin adsorbent deionized water of lemon acid prepared can also be soaked 30 ~ 50 min, adsorb by dynamic method.
Advantage of the present invention and effect are:
(1) the cotton stalk skin adsorbent of lemon acid that the present invention obtains has good physical and chemical stability and excellent mechanical strength, large with the adsorption capacity that citric acid-modified tangerine peel, citric acid-modified bamboo are considered to be worth doing, citric acid modification broomcorn straw compares dyestuff, Reusability number of times improves greatly, can improve 30%;
(2) the cotton stalk skin adsorbent of lemon acid that the present invention obtains can directly to the absorption of water body Methylene Blue, crystal violet, the various basic-dyeable fibre of basic fuchsin, and adsorption efficiency is high, and the speed of absorption is fast, and desorption performance is good, can use within the scope of wider soda acid;
(3) present invention process is simple, and condition is easy to control, and production cost is low, is easy to suitability for industrialized production, without " three wastes " discharge in whole production process, belongs to process for cleanly preparing;
(4) the cotton stalk skin that the present invention uses is that natural regeneration macromolecular material makes adsorbent, the more important thing is the waste utilization of cotton stalk skin, has so both saved raw-material cost and can create considerable economic benefit; By citric acid modification, use this adsorbent environmentally safe, the advantages such as production cost is low, and discarded object is biodegradable.
Detailed description of the invention
Embodiment 1
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 36 h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: by cotton for 20g pretreatment stalk skin, being placed in 200 mL containing urea quality percentage concentration is 2% and containing the mixed solution soaking at room temperature 25min of dioxygen 1%, soak after, suction filtration, washing, be 0.6mol/LNaOH solution soaking at room temperature 8h by concentration, boil 30 min again, spend deionized water after cooling to neutral, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the triangular flask of tool plug, add 100mL deionized water, 15g citric acid, 4g inferior sodium phosphate, after stirring and dissolving, add 15g to come unstuck cotton stalk skin, room temperature reaction 4 h, heat up 60 DEG C, react 20 h, be warming up to 130 DEG C, reaction 2h, after cooling, spend in deionized water to washing lotion and exist without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 10%, all be dipped in solution with solid and be as the criterion, 8 h are soaked under room temperature, suction filtration, with the Adlerika washing of 3%, 100 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Embodiment 2
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 30 h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: by cotton for 15g pretreatment stalk skin, being placed in 200 mL containing urea quality percentage concentration is 1% and containing the mixed solution soaking at room temperature 30min of dioxygen 1%, soak after, suction filtration, washing, be 0.8mol/LNaOH solution soaking at room temperature 10h by concentration, boil 35 min again, spend deionized water after cooling to neutral, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the triangular flask of tool plug, add 100mL deionized water, 25g citric acid, 6g inferior sodium phosphate, after stirring and dissolving, add 15g to come unstuck cotton stalk skin, room temperature reaction 2 h, heat up 70 DEG C, react 25 h, be warming up to 130 DEG C, reaction 2h, after cooling, spend in deionized water to washing lotion and exist without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 15%, all be dipped in solution with solid and be as the criterion, 6.5 h are soaked under room temperature, suction filtration, with the Adlerika washing of 2%, 90 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Embodiment 3
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 24h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: by cotton for 20g pretreatment stalk skin, being placed in 150 mL containing urea quality percentage concentration is 4% and containing the mixed solution soaking at room temperature 20min of dioxygen 2%, soak after, suction filtration, washing, be 0.5mol/LNaOH solution soaking at room temperature 5h by concentration, boil 40 min again, spend deionized water after cooling to neutral, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the triangular flask of tool plug, add 80mL deionized water, 15g citric acid, 4g inferior sodium phosphate, after stirring and dissolving, add 10g to come unstuck cotton stalk skin, room temperature reaction 3h, heat up 70 DEG C, react 30 h, be warming up to 130 DEG C, reaction 4h, after cooling, spend in deionized water to washing lotion and exist without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 20%, all be dipped in solution with solid and be as the criterion, 7 h are soaked under room temperature, suction filtration, with the Adlerika washing of 4%, 80 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Embodiment 4
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 28 h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: by cotton for 15g pretreatment stalk skin, being placed in 100 mL containing urea quality percentage concentration is 3% and containing the mixed solution soaking at room temperature 25min of dioxygen 2%, soak after, suction filtration, washing, be 0.7mol/LNaOH solution soaking at room temperature 8h by concentration, boil 40 min again, spend deionized water after cooling to neutral, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the triangular flask of tool plug, add 80mL deionized water, 35g citric acid, 5g inferior sodium phosphate, after stirring and dissolving, add 20g to come unstuck cotton stalk skin, room temperature reaction 4 h, heat up 60 DEG C, react 20 h, be warming up to 130 DEG C, reaction 2h, after cooling, spend in deionized water to washing lotion and exist without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 10%, all be dipped in solution with solid and be as the criterion, 8 h are soaked under room temperature, suction filtration, with the Adlerika washing of 3%, 100 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Embodiment 5
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 30 h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: by cotton for 15g pretreatment stalk skin, being placed in 200 mL containing urea quality percentage concentration is 1% and containing the mixed solution soaking at room temperature 30min of dioxygen 1%, soak after, suction filtration, washing, be 0.8mol/LNaOH solution soaking at room temperature 10h by concentration, boil 35 min again, spend deionized water after cooling to neutral, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the triangular flask of tool plug, add 50mL deionized water, 30g citric acid, 2g inferior sodium phosphate, after stirring and dissolving, add 18g to come unstuck cotton stalk skin, room temperature reaction 2 h, heat up 70 DEG C, react 25 h, be warming up to 130 DEG C, reaction 2h, after cooling, spend in deionized water to washing lotion and exist without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 15%, all be dipped in solution with solid and be as the criterion, 6.5 h are soaked under room temperature, suction filtration, with the Adlerika washing of 2%, 90 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Embodiment 6
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 24h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: by cotton for 20g pretreatment stalk skin, being placed in 150 mL containing urea quality percentage concentration is 4% and containing the mixed solution soaking at room temperature 20min of dioxygen 2%, soak after, suction filtration, washing, be 0.5mol/LNaOH solution soaking at room temperature 5h by concentration, boil 40 min again, spend deionized water after cooling to neutral, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the triangular flask of tool plug, add 55mL deionized water, 20g citric acid, 5g inferior sodium phosphate, after stirring and dissolving, add 20g to come unstuck cotton stalk skin, room temperature reaction 3h, heat up 70 DEG C, react 30 h, be warming up to 130 DEG C, reaction 4h, after cooling, spend in deionized water to washing lotion and exist without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 20%, all be dipped in solution with solid and be as the criterion, 7 h are soaked under room temperature, suction filtration, with the Adlerika washing of 4%, 80 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Embodiment 7
Take 0.10g twist lemon acid cotton stalk skin adsorbent be placed in 250mL tool plug conical flask, adding 100mL concentration is in 600mg/L dye solution, be in 3.0 ~ 100 scopes with acid or the pH value of alkali regulation system, at room temperature concussion absorption 1h, get supernatant, by the concentration of spectrophotometric determination dyestuff, according to the concentration difference of dyestuff in water before and after absorption, calculate the adsorption capacity of the cotton stalk skin adsorbent of stubborn lemon acid, result shows, pH value adsorbent adsorbance to the absorption of dyestuff in 5.0 ~ 8.5 scopes is maximum and stable, so pH value controls in 5.0 ~ 8.5 scopes when using this adsorbent dyestuff, the experiment of adsorption time has been done and has at room temperature been shaken absorption 1 ~ 4 h, result shows at room temperature to shake absorption 1 more than h, dyestuff adsorbs completely substantially, and the adsorption capacity of methylene blue, crystal violet, basic fuchsin can reach 372.8 mg/g, 456.7 mg/g, 382.6 mg/g respectively.
Embodiment 8
Take 1.0g twist lemon acid cotton stalk skin adsorbent be placed in 250mL tool plug conical flask, adding 100mL concentration is in 200mg/L dye solution, be in 5.0 ~ 8.5 scopes with acid or the pH value of alkali regulation system, at room temperature shake absorption 2 h, get supernatant, by the concentration of spectrophotometric determination dyestuff, according to the concentration difference of dyestuff in water before and after absorption, calculate the cotton stalk skin adsorbent of stubborn lemon acid to the clearance of dyestuff, result shows, this adsorbent pair, methylene blue, crystal violet, basic fuchsin three kinds of dyestuffs going in water processes all more than 95%, reaches as high as 99.2%.
Experiment shows, citric acid cotton stalk skin of the present invention for alkali and alkaline earth metal ions if any K
+, Na
+, Ca
2+, Mg
2+deng not adsorbing, when there is alkali and alkaline earth metal ions thus in sample, do not affect the absorption property of citric acid cotton stalk skin.
During Static Adsorption, the factor such as pH value of citric acid cotton stalk skin adsorption capacity and adsorption temp, adsorption time, solution system is relevant.
Dynamic Adsorption adopts wet method to load adsorption column in citric acid cotton stalk skin adsorbent, after pretreatment, is pass through adsorption column, by the concentration of spectrophotometric determination efflux dyestuff with the flow velocity of 5.0mL/min in 5.0 ~ 8.5 scopes by the pH value of the solution system adsorbed.
During Dynamic Adsorption, citric acid cotton stalk skin adsorption capacity is relevant with factors such as the pH value of adsorption temp, solution system, the flow velocitys of solution.
For containing in the aqueous systems of organic dyestuff, adopt the method for citric acid cotton stalk skin static state or Dynamic Adsorption to carry out water treatment, it is very strong to the adsorption capacity of dyestuff.
Claims (1)
1. a citric acid cotton stalk skin sorbent preparation method, is characterized in that, the method has following processing step:
(1) the cotton stalk skin of pretreatment: get cotton stalk and soak 24 ~ 36h in room temperature water, pulverize after peelling off the outer field skin of cotton stalk, washing, impurity elimination, drying, by 20-40 object sieve, obtains the cotton stalk skin of pretreatment;
(2) come unstuck cotton stalk peel preparation method: be urea liquid and 1 ~ 2% hydrogen peroxide mixed solution soaking at room temperature 20 ~ 30min of 1.0 ~ 4.0% by pretreatment cotton stalk skin mass percentage concentration, the solid-to-liquid ratio of the cotton stalk skin of pretreatment and mixed solution is 1g:4.0 ~ 15mL, soak after, suction filtration, washing, be 0.5 ~ 0.8mol/LNaOH solution soaking at room temperature, 5 ~ 10h by concentration, boil 30 ~ 40min again, deionized water is spent to neutral after cooling, dry at 60 ~ 70 DEG C after suction filtration, obtain the cotton stalk skin that comes unstuck;
(3) citric acid cotton stalk skin absorbent preparation: in the reactor, adds by following composition mass percent, deionized water: 40 ~ 75%; Citric acid: 10 ~ 35%, inferior sodium phosphate: 2 ~ 10%, come unstuck cotton stalk skin: 8 ~ 20%, room temperature reaction 2 ~ 6h, heats up 60 ~ 70 DEG C, reaction 20 ~ 30h, be warming up to 130 DEG C again, reaction 2 ~ 4h, after cooling, spends in deionized water to washing lotion and exists without citric acid, suction filtration, being immersed in mass percentage concentration is in the Adlerika of 10 ~ 20%, is all dipped in solution is as the criterion with solid, soaks 6.5 ~ 10h under room temperature, suction filtration, with the Adlerika washing of 2 ~ 4%, 80 ~ 100 DEG C of oven dry, obtain citric acid cotton stalk skin adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560830.5A CN103566909B (en) | 2013-11-13 | 2013-11-13 | A kind of preparation method of citric acid cotton stalk skin and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560830.5A CN103566909B (en) | 2013-11-13 | 2013-11-13 | A kind of preparation method of citric acid cotton stalk skin and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103566909A CN103566909A (en) | 2014-02-12 |
| CN103566909B true CN103566909B (en) | 2015-08-19 |
Family
ID=50040137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310560830.5A Expired - Fee Related CN103566909B (en) | 2013-11-13 | 2013-11-13 | A kind of preparation method of citric acid cotton stalk skin and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103566909B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933943B (en) * | 2014-03-13 | 2015-10-21 | 济南大学 | A kind of 2-benzothiazolyl mercaptan modifies the preparations and applicatio of cotton stalk skin adsorbent |
| CN105561941B (en) * | 2016-02-17 | 2017-09-22 | 济南大学 | A kind of Cocoamidopropyl betaine is modified the preparation of cotton stalk skins adsorbent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009039601A (en) * | 2007-08-06 | 2009-02-26 | Katsuyoshi Kondo | Method for removing heavy metal element in biomass and method for decontaminating heavy metal-contaminated soil |
| CN102389777A (en) * | 2011-09-19 | 2012-03-28 | 济南大学 | Preparation method and use of sulfydryl cotton stalk bark |
| CN103191702A (en) * | 2013-04-26 | 2013-07-10 | 济南大学 | Preparation method and application of sulfydryl palm bark adsorbent |
| CN103212378A (en) * | 2013-04-26 | 2013-07-24 | 济南大学 | Preparation method and application of citric acid modified palm tree bark adsorbing agent |
-
2013
- 2013-11-13 CN CN201310560830.5A patent/CN103566909B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009039601A (en) * | 2007-08-06 | 2009-02-26 | Katsuyoshi Kondo | Method for removing heavy metal element in biomass and method for decontaminating heavy metal-contaminated soil |
| CN102389777A (en) * | 2011-09-19 | 2012-03-28 | 济南大学 | Preparation method and use of sulfydryl cotton stalk bark |
| CN103191702A (en) * | 2013-04-26 | 2013-07-10 | 济南大学 | Preparation method and application of sulfydryl palm bark adsorbent |
| CN103212378A (en) * | 2013-04-26 | 2013-07-24 | 济南大学 | Preparation method and application of citric acid modified palm tree bark adsorbing agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103566909A (en) | 2014-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103212378B (en) | Preparation method and application of citric acid modified palm tree bark adsorbing agent | |
| CN103464115B (en) | One preparations and applicatio growing flax adsorbent | |
| CN103920469B (en) | A kind of preparation method of citric acid silk adsorbent | |
| CN105642237B (en) | A kind of preparation method of endecatylene amido propyl betaine modification infusorial earth | |
| CN103464119B (en) | Preparation method and application of modified cysteine palm bark adsorbent | |
| CN102389778B (en) | Preparation method and use of sulfydryl flax | |
| CN104289187B (en) | A kind of preparation of dimethyl diallyl ammonium chloride modified loofah sponge adsorbent | |
| CN103191703A (en) | Preparation method and application of bagasse mercapto-biosorbent | |
| CN103933942B (en) | A kind of preparations and applicatio of mercaptopropyl trimethoxysilane modification flax adsorbent | |
| CN103566908B (en) | A kind of preparation method of pyromellitic acid anhydride modification coconut shell adsorbent and application | |
| CN103406153A (en) | Method for preparing cellulose-based macroporous gel compound Cu2O visible-light-driven photocatalyst | |
| CN106311158B (en) | A kind of preparation method of maleic acid modified magnetic loofah adsorbent | |
| CN103191702A (en) | Preparation method and application of sulfydryl palm bark adsorbent | |
| CN103464116A (en) | Preparation method and applications of epichlorohydrin-modified vegetable sponge adsorbent | |
| CN103566909B (en) | A kind of preparation method of citric acid cotton stalk skin and application | |
| CN105664869B (en) | A kind of lauroylamidopropyl betaine is modified the preparation of palm bark adsorbent | |
| CN103464118B (en) | A kind of preparations and applicatio of epoxychloropropane palm fibre modification palmitic acid bark adsorbent | |
| CN106268675A (en) | A kind of preparation of triethylene tetramine modified magnetic palm bark adsorbent | |
| CN103073134A (en) | Method for processing alpha naphthol wastewater by utilizing iron-carbon microelectrolysis and catalyst | |
| CN105561941B (en) | A kind of Cocoamidopropyl betaine is modified the preparation of cotton stalk skins adsorbent | |
| CN103933943B (en) | A kind of 2-benzothiazolyl mercaptan modifies the preparations and applicatio of cotton stalk skin adsorbent | |
| CN106238004A (en) | A kind of preparation of cyanurotriamide modified magnetic fiber crops adsorbent | |
| CN103920467B (en) | A kind of preparation method of sulfydryl silk adsorbent and application | |
| CN105709700B (en) | A kind of dimethyl diallyl ammonium chloride is modified the preparation of reed rod adsorbent | |
| CN105618001A (en) | Preparation method of cocamidopropyl betaine modified loofah sponge adsorbent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20191113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |