CN103041785A - Oleic acid modified peanut shell adsorbing agent - Google Patents
Oleic acid modified peanut shell adsorbing agent Download PDFInfo
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- CN103041785A CN103041785A CN2012105884866A CN201210588486A CN103041785A CN 103041785 A CN103041785 A CN 103041785A CN 2012105884866 A CN2012105884866 A CN 2012105884866A CN 201210588486 A CN201210588486 A CN 201210588486A CN 103041785 A CN103041785 A CN 103041785A
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- oleic acid
- peanut shell
- peanut
- acid modified
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Abstract
The invention discloses an oleic acid modified peanut shell adsorbing agent, which recycles waste and is used for adsorbing pollutants, particularly adsorbing heavy metal Pb<2+>, and is low in price, simple in preparation and good in application effect, and the adsorbing rate to the heavy metal Pb<2+> can be up to 83.19% to the highest degree.
Description
Technical field
The present invention relates to the adsorbent field, be specifically related to a kind of oleic acid modified peanut adsorbent.
Background technology
China's peanut yield accounts for 1/3 of Gross World Product, annual about 1,800,000 tons of the byproduct peanut shell that produces in the process of peanut.At present, as the roughage, burnt or thrown away in vain by a large amount of peanut shells except on a small quantity for peanut shell, caused great waste.That enrich in peanut shell source is with low cost, biodegradable, environmentally friendly, contain polyhydric phenols and a large amount of cellulose substances such as catechol in the peanut shell, can be for different absorption objects, introduce to organic matter or the stronger active group of Action of Metal Ions power, to improve its adsorption capacity by chemical modification.
Summary of the invention
The purpose of this invention is to provide a kind of adsorbent that utilizes the peanut shell preparation.
A kind of oleic acid modified peanut adsorbent, preparation process is:
(1) peanut shell is cleaned, dried, put 80 ℃ of baking 3h in the baking oven, then beat powder with pulverizer and sieve, grain fineness is 24 orders, puts in the drier for subsequent use.
(2) sulfuric acid, the peanut shell with oleic acid, n-hexane, 0.1mol/L adds in the reaction vessel.100 ~ 150min refluxes in 80 ~ 100 ℃ of water-baths.
(3) suction filtration desolventizing after reaction finishes, granulated slag n-hexane flushing material is washed till pH with distilled water again〉5, last peanut shell after 46 ℃ of lower baking 3h namely get modification.
Oleic acid and sulfuric acid volume ratio are 1:4.8 ~ 5.3 in the absorbent preparation process, and peanut shell and oleic acid mass volume ratio are 1g:4.9 ~ 5.6mL.Normal hexane and oleic acid volume ratio are 10:1.
Good effect of the present invention is: recycled the absorption of discarded object for pollutant, especially to heavy metal Pb
2+Absorption, cheap, preparation is simple, effect is good.
The specific embodiment
Describe technical scheme of the present invention in detail below in conjunction with embodiment, but protection domain is not so limited.
1 one kinds of oleic acid modified peanuts of embodiment adsorbent
(1) peanut shell is cleaned, dried, put 80 ℃ of baking 3h in the baking oven, then beat powder with pulverizer and sieve, grain fineness is 24 orders, puts in the drier for subsequent use.
(2) sulfuric acid, the 2g peanut shell with 10mL oleic acid, 100mL n-hexane, 50mL 0.1mol/L adds in the reaction vessel.120min refluxes in 80 ℃ of water-baths.
(3) suction filtration desolventizing after reaction finishes, granulated slag n-hexane flushing material, being washed till pH with distilled water again is 7, at last the peanut shell A after 46 ℃ of lower baking 3h namely get modification.
2 one kinds of oleic acid modified peanuts of embodiment adsorbent
(1) peanut shell is cleaned, dried, put 80 ℃ of baking 3h in the baking oven, then beat powder with pulverizer and sieve, grain fineness is 24 orders, puts in the drier for subsequent use.
(2) sulfuric acid, the 2g peanut shell with 9.8mL oleic acid, 98mL n-hexane, 47mL 0.1mol/L adds in the reaction vessel.100min refluxes in 100 ℃ of water-baths.
(3) suction filtration desolventizing after reaction finishes, granulated slag n-hexane flushing material, being washed till pH with distilled water again is 6, at last the peanut shell B after 46 ℃ of lower baking 3h namely get modification.
3 one kinds of oleic acid modified peanuts of embodiment adsorbent
(1) peanut shell is cleaned, dried, put 80 ℃ of baking 3h in the baking oven, then beat powder with pulverizer and sieve, grain fineness is 24 orders, puts in the drier for subsequent use.
(2) sulfuric acid, the 2g peanut shell with 11.2mL oleic acid, 112mL n-hexane, 59.5mL 0.1mol/L adds in the reaction vessel.100 ~ 150min refluxes in 90 ℃ of water-baths.
(3) suction filtration desolventizing after reaction finishes, granulated slag n-hexane flushing material, being washed till pH with distilled water again is 7, at last the peanut shell after 46 ℃ of lower baking 3h namely get modification.
By the difference of the mechanism of action, absorption can be divided into physical adsorption process and chemisorbed process.At first, adsorbed material gathers first concentrated on the sorbing material surface, then enters between solid lattice atoms or the molecule and adsorbs, and some then directly are combined with material molecule and are adsorbed in addition.Certainly, this process is reversible, and on the one hand, adsorbed material gathers and is adsorbed at material surface, some adsorbed materials is also arranged owing to material surface is left in the motion of molecule simultaneously, reenters suction phenomenon occurs in the water to separate.When being in dynamic equilibrium, sorption and desorption is called adsorption equilibrium.Be adsorbed the concentration of matter in solution and be called equilibrium concentration this moment.
Modified peanut powder 2 grams are joined certain density 50mLPb (NO
3)
2In the solution, stirring and adsorbing 1h under the room temperature, suction filtration slagging-off is take EDTA as standard liquid, NH
3-NH
4Cl is that cushioning liquid, eriochrome black T are that indicator carries out the complexometric titration analysis.The modified peanut powder is to Pb
2+Adsorption rate calculate as follows:
Adsorption rate %=(1-a/b) * 100%
Wherein, Pb in the rear solution of a. absorption
2+Concentration
B. Pb in the solution before adsorbing
2+Concentration
Acquired results is as follows:
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Adsorption rate/% | 83.19 | 82.08 | 81.96 |
Claims (2)
1. oleic acid modified peanut adsorbent, it is characterized in that: the absorbent preparation process is:
(1) peanut shell is cleaned, dried, put 80 ℃ of baking 3h in the baking oven, then beat powder with pulverizer and sieve, grain fineness is 24 orders, puts in the drier for subsequent use;
(2) sulfuric acid, the peanut shell with oleic acid, n-hexane, 0.1mol/L adds in the reaction vessel; 100 ~ 150min refluxes in 80 ~ 100 ℃ of water-baths;
(3) suction filtration desolventizing after reaction finishes, granulated slag n-hexane flushing material is washed till pH with distilled water again〉5, last peanut shell after 46 ℃ of lower baking 3h namely get modification.
2. a kind of oleic acid modified peanut adsorbent according to claim 1, it is characterized in that: oleic acid and sulfuric acid volume ratio are 1:4.8 ~ 5.3 in the absorbent preparation process, peanut shell and oleic acid mass ratio are 1:4.9 ~ 5.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105884866A CN103041785A (en) | 2012-12-31 | 2012-12-31 | Oleic acid modified peanut shell adsorbing agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105884866A CN103041785A (en) | 2012-12-31 | 2012-12-31 | Oleic acid modified peanut shell adsorbing agent |
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| CN103041785A true CN103041785A (en) | 2013-04-17 |
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| CN2012105884866A Pending CN103041785A (en) | 2012-12-31 | 2012-12-31 | Oleic acid modified peanut shell adsorbing agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342990A (en) * | 2013-07-11 | 2013-10-09 | 上海大学 | Preparation method of pomelo peel oil absorption material |
| CN108479734A (en) * | 2018-05-03 | 2018-09-04 | 赖凯旋 | A kind of oyster shell whiting reinforcement material for air purification and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239305A (en) * | 2008-03-06 | 2008-08-13 | 上海交通大学 | Method for preparing modified plant fibrous sale price biological adsorption agent |
| CN102553538A (en) * | 2012-01-10 | 2012-07-11 | 山东大学 | Modified peanut shell cationic adsorbent, preparation method and application |
-
2012
- 2012-12-31 CN CN2012105884866A patent/CN103041785A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239305A (en) * | 2008-03-06 | 2008-08-13 | 上海交通大学 | Method for preparing modified plant fibrous sale price biological adsorption agent |
| CN102553538A (en) * | 2012-01-10 | 2012-07-11 | 山东大学 | Modified peanut shell cationic adsorbent, preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| SHASHWAT S. BANERJEE，ET AL: "Treatment of oil spill by sorption technique using fatty acid grafted sawdust", 《CHEMOSPHERE》, vol. 64, no. 6, 31 August 2006 (2006-08-31), pages 1026 - 1031 * |
| 李山: "改性花生壳对水中重金属离子和染料的吸附特性研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》, 15 August 2009 (2009-08-15), pages 221 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342990A (en) * | 2013-07-11 | 2013-10-09 | 上海大学 | Preparation method of pomelo peel oil absorption material |
| CN108479734A (en) * | 2018-05-03 | 2018-09-04 | 赖凯旋 | A kind of oyster shell whiting reinforcement material for air purification and preparation method thereof |
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Application publication date: 20130417 |