CN102806072A - Method for preparing organic mineralized refuses through modification of cationic and non-ionic surfactants - Google Patents
Method for preparing organic mineralized refuses through modification of cationic and non-ionic surfactants Download PDFInfo
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- CN102806072A CN102806072A CN2012102876410A CN201210287641A CN102806072A CN 102806072 A CN102806072 A CN 102806072A CN 2012102876410 A CN2012102876410 A CN 2012102876410A CN 201210287641 A CN201210287641 A CN 201210287641A CN 102806072 A CN102806072 A CN 102806072A
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Abstract
The invention provides a method for preparing organic mineralized refuses through modification of cationic and non-ionic surfactants. The method comprises the following steps: 1) drying the mineralized refuses by air; crushing the dried mineralized refuses to remove impurities; filtering the mineralized refuses by a screen of 40-200 meshes; adding the mineralized refuses to an cationic surfactant solution; and stirring the mineralized refuses and the cationic surfactant solution in a water bath for 2-8 h at 50-80 DEG C; 2) adding the non-ionic surfactant to a mixture, wherein 0.1-0.3 g non-ionic surfactant is added to each gram of mineralized refuses; stirring the mixture in the water bath for 2-4 h at 50-80 DEG C; filtering an obtained product; washing the product by a distilled water; drying the product at 60-90 DEG C after filtering the product; activating the dried product for 30 minutes to 5 hours at 105-110 DEG C; grinding the product; and filtering the product by a screen of 50-100 meshes so as to prepare organic mineralized refuses modified by the cationic and non-ionic surfactants. The method for preparing the organic mineralized refuses through modification of the cationic and non-ionic surfactants, provided by the invention, has the advantage that the mineralized refuses are respectively modified by the cationic and non-ionic surfactants according to a certain mixing ratio so as to improve the adsorption quantity of the mineralized refuses to phenols.
Description
Technical field
The present invention relates to the exploitation of environmental pollution control new material, relate in particular to a kind of method of organic modification mineralized waste.
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 a kind of sun-non-ionic surface active agent modification to prepare the method for organic mineralized waste for overcoming the mineralized waste of the prior art deficiency less to the organic pollution adsorbance.
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, join in the cationic surfactant solution, every milliliter of cationic surfactant solution adds 0.2 ~ 0.6g mineralized waste, at 50～80 ℃ of stirred in water bath 2 ~ 8h;
2) add non-ionic surface active agent again, every gram mineralized waste adds 0.1 ~ 0.3g non-ionic surface active agent, again at 50～80 ℃ of stirred in water bath 2 ~ 4h; Product is through filtering, with the distilled water washing, after filter is done; 60～90 ℃ of down oven dry, again 105 ~ 110 ℃ of following activation 30min～5 hours; Grind, cross 50 ~ 100 mesh sieves, make organic mineralized waste of sun-non-ionic surface active agent modification.
Be 8-15 the mineralized waste landfill age described in the step 1).
Cationic surfactant described in the step 1) is that the alkyl carbon number of middle long chain type is at the alkylammonium salt more than 8 or 8, like cetrimonium bromide, bromination eight alkyl trimethyl ammoniums etc.Described cationic surfactant solution concentration is 300 ~ 800mg/L.
Step 2) ionic surfactant pack described in is drawn together OPEO, polyoxyethylene sorbitan mono laurate fat or Brij-721.
Through utilizing cationic surfactant modification mineralized waste, adsorbance can reach 1.2mg/g, is about three times of unmodified mineralized waste, near the adsorption effect of active carbon.Size that there are some researches show the phosphorus content of adsorbent has decisive influence to adsorbance, and the phosphorus content that increases adsorbent surface can improve adsorbent greatly to organic adsorbance.
Advantage of the present invention is to use cation and non-ionic surface active agent by certain proportioning modification mineralized waste respectively; Cationic surfactant at first is fixed on the surface of mineralized waste through cation exchange; Non-ionic surface active agent combines on the mineralized waste surface through Van der Waals force then; Utilize cationic surfactant to improve the binding capacity of non-ionic surface active agent, utilize non-ionic surface active agent to improve the total organic carbon on mineralized waste surface simultaneously.Total organic carbon is to promoting the be adsorbed with key effect of organic pollution at particle surface.Total organic carbon improves, and can promote the adsorbance of organic contamination at particle surface greatly.
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; Joining concentration is in the cationic surfactant cetyltrimethylammonium chloride solution of 800mg/L, and every milliliter of cationic surfactant solution adds the 0.6g mineralized waste, at 80 ℃ of stirred in water bath 8h; Add non-ionic surface active agent again, every gram mineralized waste adds 0.3g non-ionic surface active agent OPEO (TritonX-100), again at 80 ℃ of stirred in water bath 4h; Product is through filtering, with distilled water washing 2 times, after filter is done; 90 ℃ of oven dry down, again 105 ℃ of following activation 5 hours; Grind, cross 100 mesh sieves, make organic mineralized waste of sun-non-ionic surface active agent modification.
The sun that makes-non-ionic surface active agent modification mineralized waste is joined in the 15mg/L nitrobenzene waste water, 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 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 56.2% to the clearance of nitrobenzene-containing 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, take by weighing a certain amount of joining in the cationic surfactant chlorination eight alkyl trimethyl ammonium salt solutions that concentration is 300mg/L; Every milliliter of cationic surfactant solution adds the 0.2g mineralized waste, at 50 ℃ of stirred in water bath 2h; Add non-ionic surfactant polyoxyethylene anhydrous sorbitol mono laurate fat (Tween20) again; Every gram mineralized waste adds the 0.1g non-ionic surface active agent, and again at 50 ℃ of stirred in water bath 2h, product is through filtering; With distilled water washing 2 times; After filter is done, 60 ℃ of oven dry down, again at 110 ℃ of following activation 30min; Grind, cross 50 mesh sieves, make organic mineralized waste of sun-non-ionic surface active agent modification.
The sun that makes-non-ionic surface active agent modification mineralized waste is joined in the 50mg/L phenolic waste water, 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 70.3%.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 8 years ages; Air-dry; Pulverize decontamination, cross 100 mesh sieves, take by weighing a certain amount of joining in the cationic surfactant octadecyl trimethyl ammonium bromide solution that concentration is 800mg/L; Every milliliter of cationic surfactant solution adds the 0.5g mineralized waste, at 80 ℃ of stirred in water bath 6h; Add non-ionic surface active agent Brij-721 (Brij78) again, every gram mineralized waste adds the 0.3g non-ionic surface active agent, again at 80 ℃ of stirred in water bath 4h; Product is through filtering, with distilled water washing 2 times, after filter is done; 90 ℃ of oven dry down, again 105 ℃ of following activation 4 hours; Grind, cross 100 mesh sieves, make organic mineralized waste of sun-non-ionic surface active agent modification.
The sun that makes-non-ionic surface active agent modification mineralized waste is joined in the 5mg/L benzene waste water, 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%.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 83.2% to the clearance that contains the benzene wastewater treatment under the same conditions.
Claims (5)
1. sun-non-ionic surface active agent modification prepares the method for organic mineralized waste, it is characterized in that: step is following:
1) mineralized waste is air-dry, pulverize decontamination, cross 40 ~ 200 mesh sieves, join then in the cationic surfactant solution, every milliliter of cationic surfactant solution adds 0.2 ~ 0.6g mineralized waste, at 50～80 ℃ of stirred in water bath 2 ~ 8h;
2) add non-ionic surface active agent again, every gram mineralized waste adds 0.1 ~ 0.3g non-ionic surface active agent, again at 50～80 ℃ of stirred in water bath 2 ~ 4h; Product is through filtering, with the distilled water washing, after filter is done; 60～90 ℃ of down oven dry, again 105 ~ 110 ℃ of following activation 30min～5 hours; Grind, cross 50 ~ 100 mesh sieves, make organic mineralized waste of sun-non-ionic surface active agent modification.
2. sun according to claim 1-non-ionic surface active agent modification prepares the method for organic mineralized waste, it is characterized in that: be 8-15 the mineralized waste landfill age described in the step 1).
3. sun according to claim 1-non-ionic surface active agent modification prepares the method for organic mineralized waste, it is characterized in that: the cationic surfactant described in the step 1) is that the alkyl carbon number of middle long chain type is at the alkylammonium salt more than 8 or 8.
4. prepare the method for organic mineralized waste, it is characterized in that according to claim 1 or 3 described sun-non-ionic surface active agent modifications: the cationic surfactant solution concentration described in the step 1) is 300 ~ 800mg/L.
5. sun according to claim 1-non-ionic surface active agent modification prepares the method for organic mineralized waste, it is characterized in that: step 2) described in non-ionic surface active agent be OPEO, polyoxyethylene sorbitan mono laurate fat or Brij-721.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423620A (en) * | 2019-06-11 | 2019-11-08 | 扬州工业职业技术学院 | A kind of enhanced remediation composite treating agent of soil nitrobenzene contamination |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554474A (en) * | 2003-12-19 | 2004-12-15 | 浙江大学 | Process for preparing cation-non-ion organic bentonite waste water treating material |
| CN102259945A (en) * | 2011-07-04 | 2011-11-30 | 常州大学 | Method for treating organic wastewater utilizing aged refuse |
| CN102274716A (en) * | 2011-07-26 | 2011-12-14 | 常州大学 | Preparing method for compound modified and mineralized rubbish from water treatment materials |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554474A (en) * | 2003-12-19 | 2004-12-15 | 浙江大学 | Process for preparing cation-non-ion organic bentonite waste water treating material |
| CN102259945A (en) * | 2011-07-04 | 2011-11-30 | 常州大学 | Method for treating organic wastewater utilizing aged refuse |
| CN102274716A (en) * | 2011-07-26 | 2011-12-14 | 常州大学 | Preparing method for compound modified and mineralized rubbish from water treatment materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423620A (en) * | 2019-06-11 | 2019-11-08 | 扬州工业职业技术学院 | A kind of enhanced remediation composite treating agent of soil nitrobenzene contamination |
| CN110423620B (en) * | 2019-06-11 | 2021-06-29 | 扬州工业职业技术学院 | Synergistic remediation composite treating agent for soil nitrobenzene pollution |
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Application publication date: 20121205 |