CN101733078A - Method for preparing phosphorous-removing adsorbent by using cane shoots leaves - Google Patents
Method for preparing phosphorous-removing adsorbent by using cane shoots leaves Download PDFInfo
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- CN101733078A CN101733078A CN201010300282A CN201010300282A CN101733078A CN 101733078 A CN101733078 A CN 101733078A CN 201010300282 A CN201010300282 A CN 201010300282A CN 201010300282 A CN201010300282 A CN 201010300282A CN 101733078 A CN101733078 A CN 101733078A
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Abstract
The invention relates to a method for preparing a phosphorous-removing adsorbent by using cane shoots leaves, belonging to the technical field of environmental protection. The method comprises the following steps of: 1, taking, mixing and heating industrial waste residue iron cement and ammonium sulfate and infusing with hydrochloric acid to obtain solution; 2, taking cane shoots leaves, grinding and infusing in the solution obtained in the step 1; 3, performing vacuum filtration and washing; and 4, repeating the operation in the step 3 till the cleanout fluid obtained by washing is colourless to obtain solid, and then drying the solid to obtain the phosphorous-removing adsorbent of can shoots leaves. The technique scheme has simple process without high-temperature roasting, ensures wide application range of the pH value of the adsorbent, good phosphorous-removing effect and large adsorbing capacity as high as 2.02mg/g and has favorable application prospect for treating eutrophic wastewater.
Description
Technical field
The present invention relates to a kind of preparation method of environmental technology field, specifically is a kind of method of utilizing the wild rice stem leaf to prepare dephosphorization adsorbent.
Background technology
When nutriment in water body (referring generally to the compound of nitrogen and phosphorus) inorganic states total nitrogen content＞0.2mg/L, total phosphorus content＞0.02mg/L, can cause the algal tufa phenomenon of water body plant (as algae and macrophyte) raised growth.Aspects such as resident's safe drinking water, aquaculture, water landscape value take place to have badly influenced in algal tufa phenomenon high frequency, have caused enormous economic loss.Nitrogen has a complete circulation at occurring in nature: biological (organic matter) → ammonia → nitrite → nitrate → biology (organic matter), so be not easy that enrichment causes polluted by nitrogen in actual water body.And because there is not complete cycle in occurring in nature phosphorus, so the easy enrichment of phosphorus pollutes.Therefore prevent that the body eutrophication key from being the phosphorus content that will control wherein.
Phosphorus removing method has methods such as conventional biological phosphate-eliminating method, chemical dephosphorization method at present.The biological phosphate-eliminating method dephosphorization cycle is long; The chemical dephosphorization method is simple to operate, but medicament expense is with high, and the chemical precipitation that generates is difficult, causes secondary pollution.
Find through literature search prior art, Indian Journal of Chemical Technology (India's chemical technology magazine), 1999, the 6th volume, the 256th～262 page " Phosphate adsorption studies usingcarbon prepared from stem bark of Eucalyptus teriticornis Smith (utilizing the bark of spire eucalyptus to prepare the phosphorus absorption research of gained carbon) " disclosed following technology contents: the charcoal that obtains fully with the eucalyptus leather, behind the sulfuric acid dipping, obtain adsorbent and be used to adsorb phosphorus, but this kind method raw material is limited, complex process, and prepared adsorbent is influenced greatly by the pH value of solution value to the absorption of phosphorus, and the phosphorus adsorbance all is lower than 1mg/g.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of method of utilizing the wild rice stem leaf to prepare dephosphorization adsorbent is provided.Technical scheme technology of the present invention is simple, does not need high-temperature roasting, and the pH value scope that the gained adsorbent is suitable for is wide, phosphor-removing effect is good, the adsorbent for phosphate removal time is short and adsorbance is big, reaches as high as 2.02mg/g, for administering eutrophic wastewater good prospects for application is arranged.
The present invention realizes by following technical scheme, the present invention includes following steps:
Step 1 is got industrial waste residue iron cement and ammonium sulfate, mixes, and the salt acid dip is used in heating, gets solution;
Step 2 is got the wild rice stem leaf, pulverizes, and impregnated in the step 1 gained solution;
Step 3, the vacuum filtration washing;
Step 4, the cleaning fluid that the operation of repeating step three obtains after washing is colourless, gets solids, oven dry gets wild rice stem leaf dephosphorization adsorbent.
In the step 1, by weight, the ratio of industrial waste residue iron cement and ammonium sulfate is (1～3): 1.
In the step 1, described heating is specially and is heated to 150～200 ℃.
In the step 1, the percentage by volume of described hydrochloric acid is 10%～37%.
In the step 1, Fe in the described solution
3+Concentration be 20～300g/L.
In the step 2, the time of described dipping is 10～30h.
In the step 4, described oven dry is specially: 60～80 ℃ are dried by the fire 6～10h down.
Compared with prior art, the present invention has following beneficial effect: one of raw material that adopts in the technical scheme of the present invention wild rice stem (Zizania aquatica L.) wide material sources, and cost is low, helps the recycling of agricultural wastes, and is environmentally friendly; Simultaneously, technical scheme technology of the present invention is simple, does not need high-temperature roasting, the pH value scope that the gained adsorbent is suitable for is wide, and phosphor-removing effect is good, and the adsorbent for phosphate removal time is short and adsorbance is big, reach as high as 2.02mg/g, good prospects for application is arranged for administering eutrophic wastewater.
The specific embodiment
Present embodiment has provided detailed embodiment and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.
In following examples, described " " be most species in the steel and iron industry, the most assorted discarded object of composition, the mass fraction of general iron content is 30%～70% to industrial waste residue iron cement, and this technical term is well-known to those skilled in the art.
Embodiment 1
Step 1 by weight, is mixed with ammonium sulfate industrial waste residue iron cement in 1: 1 ratio; Being heated to 150 ℃, is that 10% hydrochloric acid floods with volume fraction again, treat that sample dissolution fully after, fully stir, obtain being rich in Fe
3+Iron salt solutions, make Fe in the solution
3+Concentration be 20g/L;
Step 2 is got the wild rice stem leaf, pulverizes, and afterwards chip be impregnated in the step 1 gained solution dipping 10h;
Step 3, the vacuum filtration washing; Vacuum in this step filters and washs simultaneously carries out, i.e. the washing while filtering, and it is for washing speed is accelerated that vacuum filters;
Step 4, the cleaning fluid that the operation of repeating step three obtains after washing is colourless, and resulting solids is dried 6h down at 60 ℃ in baking oven, gets wild rice stem leaf dephosphorization adsorbent.
Implementation result: it is 2 sodium dihydrogen phosphate (NaH that the adsorbent of present embodiment gained is joined the pH value
2PO
4) adsorb in the aqueous solution, adsorption effect is 1.54mg/g.
Embodiment 2
Step 1 by weight, is mixed with ammonium sulfate industrial waste residue iron cement in 2: 1 ratios; Being heated to 175 ℃, is that 25% hydrochloric acid floods with volume fraction again, treat that sample dissolution fully after, fully stir, obtain being rich in Fe
3+Iron salt solutions, make Fe in the solution
3+Concentration be 100g/L;
Step 2 is got the wild rice stem leaf, pulverizes, and afterwards chip be impregnated in the step 1 gained solution dipping 30h;
Step 3, the vacuum filtration washing; Vacuum in this step filters and washs simultaneously carries out, i.e. the washing while filtering, and it is for washing speed is accelerated that vacuum filters;
Step 4, the cleaning fluid that the operation of repeating step three obtains after washing is colourless, and resulting solids is dried 8h down at 70 ℃ in baking oven, gets wild rice stem leaf dephosphorization adsorbent.
Implementation result: it is 7 sodium dihydrogen phosphate (NaH that the adsorbent of present embodiment gained is joined the pH value
2PO
4) adsorb in the aqueous solution, adsorption effect is 2.02mg/g.
Embodiment 3
Step 1 by weight, is mixed with ammonium sulfate industrial waste residue iron cement in 3: 1 ratios; Being heated to 200 ℃, is that 37% hydrochloric acid floods with volume fraction again, treat that sample dissolution fully after, fully stir, obtain being rich in Fe
3+Iron salt solutions, make Fe in the solution
3+Concentration be 300g/L;
Step 2 is got the wild rice stem leaf, pulverizes, and afterwards chip be impregnated in the step 1 gained solution dipping 20h;
Step 3, the vacuum filtration washing; Vacuum in this step filters and washs simultaneously carries out, i.e. the washing while filtering, and it is for washing speed is accelerated that vacuum filters;
Step 4, the cleaning fluid that the operation of repeating step three obtains after washing is colourless, and resulting solids is dried 10h down at 80 ℃ in baking oven, gets wild rice stem leaf dephosphorization adsorbent.
Implementation result: it is 10 sodium dihydrogen phosphate (NaH that the adsorbent of present embodiment gained is joined the pH value
2PO
4) adsorb in the aqueous solution, adsorption effect is 1.88mg/g.
Claims (7)
1. a method of utilizing the wild rice stem leaf to prepare dephosphorization adsorbent is characterized in that, comprises the steps:
Step 1 is got industrial waste residue iron cement and ammonium sulfate, mixes, and the salt acid dip is used in heating, gets solution;
Step 2 is got the wild rice stem leaf, pulverizes, and impregnated in the step 1 gained solution;
Step 3, the vacuum filtration washing;
Step 4, the cleaning fluid that the operation of repeating step three obtains after washing is colourless, gets solids, oven dry gets wild rice stem leaf dephosphorization adsorbent.
2. the method for utilizing the wild rice stem leaf to prepare dephosphorization adsorbent according to claim 1 is characterized in that, in the step 1, by weight, the ratio of industrial waste residue iron cement and ammonium sulfate is (1～3): 1.
3. the method for utilizing the wild rice stem leaf to prepare dephosphorization adsorbent according to claim 1 is characterized in that, in the step 1, described heating is specially and is heated to 150～200 ℃.
4. the method for utilizing the wild rice stem leaf to prepare dephosphorization adsorbent according to claim 1 is characterized in that, in the step 1, the percentage by volume of described hydrochloric acid is 10%～37%.
5. the method for utilizing the wild rice stem leaf to prepare dephosphorization adsorbent according to claim 1 is characterized in that, in the step 1, the concentration of Fe3+ is 20～300g/L in the described solution.
6. the method for utilizing the wild rice stem leaf to prepare dephosphorization adsorbent according to claim 1 is characterized in that, in the step 2, the time of described dipping is 10～30h.
7. the method for utilizing the wild rice stem leaf to prepare dephosphorization adsorbent according to claim 1 is characterized in that, in the step 4, described oven dry is specially: 60～80 ℃ are dried by the fire 6～10h down.
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| CN201010300282A CN101733078A (en) | 2010-01-14 | 2010-01-14 | Method for preparing phosphorous-removing adsorbent by using cane shoots leaves |
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| CN201010300282A CN101733078A (en) | 2010-01-14 | 2010-01-14 | Method for preparing phosphorous-removing adsorbent by using cane shoots leaves |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986822A (en) * | 2015-06-19 | 2015-10-21 | 华东理工大学 | Preparation method and regeneration method for chemical-modified iron-carrying peanut shell phosphorous removal material |
| CN105080500A (en) * | 2015-05-18 | 2015-11-25 | 江苏大学 | Natural dye wastewater adsorbent and preparation and application method thereof |
| CN105502554A (en) * | 2015-11-26 | 2016-04-20 | 辽宁石油化工大学 | Method for removal of malachite green from wastewater with Acer mono Maxim deciduous leaf biosorbent |
| CN109289798A (en) * | 2018-11-29 | 2019-02-01 | 运城学院 | A method of dephosphorization adsorbent is prepared using malic acid-modified |
-
2010
- 2010-01-14 CN CN201010300282A patent/CN101733078A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080500A (en) * | 2015-05-18 | 2015-11-25 | 江苏大学 | Natural dye wastewater adsorbent and preparation and application method thereof |
| CN104986822A (en) * | 2015-06-19 | 2015-10-21 | 华东理工大学 | Preparation method and regeneration method for chemical-modified iron-carrying peanut shell phosphorous removal material |
| CN104986822B (en) * | 2015-06-19 | 2017-03-08 | 华东理工大学 | A kind of chemical modification carries the preparation of iron peanut shell dephosphorization material and renovation process |
| CN105502554A (en) * | 2015-11-26 | 2016-04-20 | 辽宁石油化工大学 | Method for removal of malachite green from wastewater with Acer mono Maxim deciduous leaf biosorbent |
| CN105502554B (en) * | 2015-11-26 | 2018-04-06 | 辽宁石油化工大学 | The method for removing waste water Malachite Green using acer monoes fallen leaves biological adsorption agent |
| CN109289798A (en) * | 2018-11-29 | 2019-02-01 | 运城学院 | A method of dephosphorization adsorbent is prepared using malic acid-modified |
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Open date: 20100616 |