CN102773080A - Method for preparing organic aged refuse by modifying through double cationic surfactants - Google Patents
Method for preparing organic aged refuse by modifying through double cationic surfactants Download PDFInfo
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- CN102773080A CN102773080A CN2012102875403A CN201210287540A CN102773080A CN 102773080 A CN102773080 A CN 102773080A CN 2012102875403 A CN2012102875403 A CN 2012102875403A CN 201210287540 A CN201210287540 A CN 201210287540A CN 102773080 A CN102773080 A CN 102773080A
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Abstract
The invention provides a method for preparing organic aged refuse by modifying through double cationic surfactants. The method comprises the following steps of: 1) air-drying the aged refuse, crushing, removing impurities, and adding into a long-carbon chain cationic surfactant solution with the concentration of 150-400mg/L, wherein the dosage is that 0.1-0.5g of the aged refuse is added in each milliliter of the long-carbon chain cationic surfactant solution; and further stirring in a water bath at the temperature of 50-80 DEG C for 2-8 hours; 2) further adding the short-carbon chain cationic surfactant, wherein 0.2-0.8g of the short-carbon chain cationic surfactant is added in each gram of the aged refuse; further stirring in the water bath at the temperature of 50-80 DEG C for 2-4 hours, filtering products, washing with distilled water, draining, then drying at the temperature of 60-90 DEG C, and further activating for 30minutes-5hours at the temperature of 105-110 DEG C; and grinding, and screening by a 50-100-mesh screen so as to prepare the organic aged refuse by modifying through the double cationic surfactants.
Description
Technical field
The present invention relates to the exploitation of environmental pollution control new material, relate in particular to the method for the organic mineralized waste of the surfactant-modified preparation of a kind of dication.
Background technology
Mineralized waste is meant that landfill reaches stabilisation for many years basically in landfill yard, can exploit the rubbish of utilization.Compare with general soil, mineralized waste has that unit weight is less, porosity is high, the content of organic matter is high, cation exchange capacity is big, absorption and the strong characteristics of exchange capacity, is a kind of more satisfactory adsorbent.Research (absorption property and the structurally associated Journal of Sex Research of phenolic compound in mineralized waste arranged; ACTA Scientiae Circumstantiae; 2007,27 (2): 247-251) being illustrated in the mineralized waste adsorption effect certain to being adsorbed with of aldehydes matter, is the coefficient result of distributional effects and chemical reaction.But Pyrogentisinic Acid's adsorbance is less, is under the 45mg/L situation in phenol concentration, and its optimal adsorption capacity is 0.46mg/g; Be merely 1/3 of charcoal absorption capacity, as adopting mineralized waste adsorption treatment phenolic waste water, mineralized waste large usage quantity; Cost of transportation increases; It is frequent and complicated to change operation, has increased processing cost, has limited it and has been widely used.
Summary of the invention
The objective of the invention is provides the method for the organic mineralized waste of the surfactant-modified preparation of a kind of dication for overcoming the mineralized waste deficiency less to the organic matter adsorbance in the prior art.
The technical scheme that the present invention adopts is in turn include the following steps:
1) mineralized waste is air-dry; Pulverize decontamination, cross 40 ~ 200 mesh sieves, this mineralized waste is joined in the long carbochain cationic surfactant solution; Dosage is that every milliliter long carbochain cationic surfactant solution adds 0.1 ~ 0.5g mineralized waste, at 50～80 ℃ of stirred in water bath 2 ~ 8h;
2) add the short carbon chain cationic surfactant again; Every gram mineralized waste adds 0.2 ~ 0.8g short carbon chain cationic surfactant, and again at 50～80 ℃ of stirred in water bath 2 ~ 4h, product is through filtering; Wash with distilled water; After filter is done, 60～90 ℃ of oven dry down, again 105 ~ 110 ℃ of following activation 30min～5 hours; Grind, cross 50 ~ 100 mesh sieves, organic mineralized waste of the surfactant-modified preparation of dication that makes.
Be 8-15 the mineralized waste landfill age described in the step 1).
Long carbochain cationic surfactant solution concentration described in the step 1) is 150 ~ 400mg/L.
The alkyl carbon number that long carbochain cationic surfactant is middle long chain type is at the alkylammonium salt more than 12 or 12, like cetrimonium bromide, bromination dodecyl trimethyl ammonium etc.Through utilizing surfactant such as cetrimonium bromide (CTMAB) modification mineralized waste, adsorbance can reach 1.2mg/g, is about three times of unmodified mineralized waste, near the adsorption effect of active carbon.
The short carbon chain cationic surfactant is that the alkyl carbon number of middle long chain type is at the alkylammonium salt below 8 or 8, like bromination butane group trimethyl ammonium, tetramethylammonium bromide etc.
The major influence factors of adsorb organic compound mainly contains two aspects: concerning the stronger organic pollution of hydrophobicity, major influence factors is the organic carbon content of adsorbent; For the stronger organic pollution of hydrophily, major influence factors is the specific area of absorption.The phosphorus content that increases adsorbent surface can improve the adsorbance of adsorbent to hydrophobic organic compound greatly, increases specific area and then can increase the adsorbance of raising adsorbent to hydrophilic organics hydrophilicity.
Advantage of the present invention is to use the cationic surfactant of length carbochain by certain proportioning modification mineralized waste respectively; Long carbochain cationic surfactant at first is fixed on the part surface of mineralized waste through cation exchange; The partial cation exchange capacity is still left on remaining surface; The cationic surfactant of this part cation exchange capacity (CEC) and short carbon chain exchanges mutually, makes the surfactant-modified organic mineralized waste of dication of concrete length carbochain, and the length carbochain is interlaced; Can obtain corresponding bigger specific area, improve absorption property hydrophilic organics hydrophilicity.
The specific embodiment
3 embodiment of the present invention below further are provided:
Embodiment 1
With the landfill mineralized waste in 15 years ages; Air-dry; Pulverize decontamination, cross 200 mesh sieves, this mineralized waste is joined in the long carbochain cationic surfactant hexadecyltrimethylammonium chloride solution that concentration is 400mg/L; Dosage is that every milliliter long carbochain cationic surfactant solution adds the 0.5g mineralized waste, at 80 ℃ of stirred in water bath 8h; Add short carbon chain cationic surfactant eight alkyl trimethyl ammonium chlorides again, every gram mineralized waste adds 0.8g short carbon chain cationic surfactant, again at 80 ℃ of stirred in water bath 4h; Product is through filtering, with the distilled water washing, after filter is done; 90 ℃ of oven dry down, again 105 ℃ of following activation 5 hours; Grind, cross 100 mesh sieves, organic mineralized waste of the surfactant-modified preparation of dication that makes.
The mineralized waste that the dication that makes is surfactant-modified joins in the 25mg/L p-nitrophenol, and solid-liquid (quality) stirs 2h than being 1:2000; Leave standstill 3h; Precipitate and separate, ultraviolet-uisible spectrophotometer is measured supernatant concentration, and clearance is 89.8%.
According to document (absorption property and the structurally associated Journal of Sex Research of phenolic compound in mineralized waste; ACTA Scientiae Circumstantiae; 2007,27 (2): the mineralized waste that organises that 247-251) makes is merely 61.1% to the clearance that contains the p-nitrophenol wastewater treatment under the same conditions.
Embodiment 2
With the landfill mineralized waste in 8 years ages; Air-dry; Pulverize decontamination, cross 40 mesh sieves, this mineralized waste is joined in the long carbochain cationic surfactant solution octadecyl trimethylammonium bromide that concentration is 150mg/L; Dosage is that every milliliter long carbochain cationic surfactant solution adds the 0.1g mineralized waste, at 50 ℃ of stirred in water bath 2h; Add short carbon chain cationic surfactant 4 bromide again, every gram mineralized waste adds 0.2g short carbon chain cationic surfactant, again at 50 ℃ of stirred in water bath 2h; Product is through filtering, with the distilled water washing, after filter is done; 60 ℃ of oven dry down, again at 110 ℃ of following activation 30min; Grind, cross 50 mesh sieves, organic mineralized waste of the surfactant-modified preparation of dication that makes.
The mineralized waste that the dication that makes is surfactant-modified joins in the 50mg/L phenol, and solid-liquid (quality) stirs 2h than being 1:3000, leaves standstill 3h, precipitate and separate, and ultraviolet-uisible spectrophotometer is measured supernatant concentration, and clearance is 85.3%.According to document (absorption property and the structurally associated Journal of Sex Research of phenolic compound in mineralized waste; ACTA Scientiae Circumstantiae; 2007,27 (2): the mineralized waste that organises that 247-251) makes is merely 31.1% to the clearance that wastewater containing phenol is handled under the same conditions.
Embodiment 3
With the landfill mineralized waste in 15 years ages; Air-dry; Pulverize decontamination, cross 100 mesh sieves, this mineralized waste is joined DTAB in the long carbochain cationic surfactant solution that concentration is 200mg/L; Dosage is that every milliliter long carbochain cationic surfactant solution adds the 0.5g mineralized waste, at 80 ℃ of stirred in water bath 8h; Add short carbon chain cationic surfactant tetraethylammonium bromide again, every gram mineralized waste adds 0.2g short carbon chain cationic surfactant, again at 50 ℃ of stirred in water bath 4h; Product is through filtering, with the distilled water washing, after filter is done; 90 ℃ of oven dry down, again 110 ℃ of following activation 4 hours; Grind, cross 100 mesh sieves, organic mineralized waste of the surfactant-modified preparation of dication that makes.
The mineralized waste that the dication that makes is surfactant-modified joins in the 5mg/L toluene, and solid-liquid (quality) stirs 2h than being 1:2000, leaves standstill 3h, precipitate and separate, and ultraviolet-uisible spectrophotometer is measured supernatant concentration, and clearance is 99.1%.
Claims (5)
1. the method for the organic mineralized waste of the surfactant-modified preparation of dication, it is characterized in that: step is following:
1) mineralized waste is air-dry; Pulverize decontamination, cross 40 ~ 200 mesh sieves, this mineralized waste is joined in the long carbochain cationic surfactant solution; Dosage is that every milliliter long carbochain cationic surfactant solution adds 0.1 ~ 0.5g mineralized waste, at 50～80 ℃ of stirred in water bath 2 ~ 8h;
2) add the short carbon chain cationic surfactant again; Every gram mineralized waste adds 0.2 ~ 0.8g short carbon chain cationic surfactant; At 50～80 ℃ of stirred in water bath 2 ~ 4h, product is after filter, wash with distilled water, filter is dried again; 60～90 ℃ of down oven dry, again 105 ~ 110 ℃ of following activation 30min～5 hours; Grind, cross 50 ~ 100 mesh sieves, organic mineralized waste of the surfactant-modified preparation of dication that makes.
2. the method for the organic mineralized waste of the surfactant-modified preparation of dication according to claim 1 is characterized in that: be 8-15 the mineralized waste landfill age described in the step 1).
3. the method for the organic mineralized waste of the surfactant-modified preparation of dication according to claim 1 is characterized in that: the long carbochain cationic surfactant solution concentration described in the step 1) is 150 ~ 400mg/L.
4. according to the method for claim 1 or the organic mineralized waste of the surfactant-modified preparation of 3 described dications, it is characterized in that: the alkyl carbon number that the long carbochain cationic surfactant described in the step 1) is middle long chain type is at the alkylammonium salt more than 12 or 12.
5. the method for the organic mineralized waste of the surfactant-modified preparation of dication according to claim 1 is characterized in that: step 2) described in the short carbon chain cationic surfactant be that the alkyl carbon number of middle long chain type is at the alkylammonium salt below 8 or 8.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101157017A (en) * | 2007-07-27 | 2008-04-09 | 浙江大学 | A preparation method of organobentonite for removing water-solubility organic pollutant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157017A (en) * | 2007-07-27 | 2008-04-09 | 浙江大学 | A preparation method of organobentonite for removing water-solubility organic pollutant |
Non-Patent Citations (3)
| Title |
|---|
| 孙洪良等: "双阳离子复合改性膨润土的吸附性能与构效关系", 《高等学校化学学报》 * |
| 朱利中等: "双阳离子有机膨润土对菲的吸附性能及机理研究", 《环境化学》 * |
| 金龙等: "CTMAB- 改性矿化垃圾吸附苯酚性能的研究", 《污染防治技术》 * |
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Application publication date: 20121114 |