CN102173477A - Preparation technique of novel silver-carried activated carbon by hydrothermal method - Google Patents
Preparation technique of novel silver-carried activated carbon by hydrothermal method Download PDFInfo
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- CN102173477A CN102173477A CN 201110001643 CN201110001643A CN102173477A CN 102173477 A CN102173477 A CN 102173477A CN 201110001643 CN201110001643 CN 201110001643 CN 201110001643 A CN201110001643 A CN 201110001643A CN 102173477 A CN102173477 A CN 102173477A
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Abstract
The invention relates to a preparation technique of novel silver-carried activated carbon by a hydrothermal method, belonging to the technical field of water treatment. The technique comprises the following steps: evenly mixing tetrasilver tetroxide and activated carbon in a mass ratio 1:(800-1200) by adding water, wherein 1-5 parts of water is added to every part of activated carbon; drying at 60-150 DEG C for 10-40 minutes, and adding potassium persulfate or sodium persulfate, sodium hydroxide or potassium hydroxide, and distilled water, wherein the addition amounts of the potassium persulfate or sodium persulfate, and the sodium hydroxide or potassium hydroxide are respectively 1-3 times of every part of tetrasilver tetroxide, and the addition amount of the distilled water is 1-5 times of every part of activated carbon; and finally, stirring to react at 50-80 DEG C for 1-2 hours, filtering, and flushing with pure water more than twice. The technique for producing trivalent-silver-attached activated carbon is simple, and has the advantages of high synthesis efficiency and low energy consumption; and silver ions can be uniformly distributed and firmly attached onto the activated carbon, and can not easily fall off. The silver-carried activated carbon has obvious actions on multiple microbes, and is safe for both environment and human.
Description
Technical field:
The present invention relates to a kind of Hydrothermal Preparation technology of novel active carbon loading silver, belong to water-treatment technology field.
Background technology:
Activated carbon fiber (ACF) not only contains a large amount of micropores, huge specific surface area, and a large amount of organic groups is also contained on its surface.Therefore, activated carbon fiber not only has the common water purification active carbon of good adsorption performance to organism, absorption in use, objectionable impurities and microorganism in the enrichment water, but single activated carbon is easy to the growth and breeding of bacterium, cause bacterial count increase in the filtered water, and generate the mutagenic matter nitrite, cause outlet water quality to degenerate.Silver is promptly known before 2000 as sterilant, and the investigator measures the relative efficiency of different metal bactericidal potency according to experiment, arranges as follows:
Ag＞Hg＞Cu＞Cd＞Ni＞Co＞Zn＞Fe＞Ca
Therefore many investigators are adsorbed in silver and play germicidal action on the gac, and Luo Yongyi (environmental chemistry, 1995,14 (1), 75-79) applied activated carbon has carried out the absorption research of Silver Nitrate.Argent in the active carbon loading silver can discharge micro silver ion consistently in water.This silver ions can cause bacterium to be poisoned to death, and pathogeny body surfaces such as morbific enteric microorganism typhoid fever, paratyphoid and dysentery are revealed its special effective function, but the pollution of this usefulness prophylactic activity charcoal.Active carbon loading silver has sterilization, sterilization as drinking water purification, and prophylactic activity charcoal Xing such as dyes at effect, is a kind of good water-purifying material.
Silver element belongs to Cu bunch of element in the transition state, forms ion and has the strong manifestation of multiple valency.Silver participates in the fungicidal activity effect also the existing form of different price key table, and the investigator generally believes that by research silver-colored sterilizing ability is relevant with its price now, and the sterilizing ability of higher-priced silver is higher than (J.AM.CHEM.SOC.2009,131, the 16147-16155 of low price; Burns 2007,33,139-148; East China University of Science's journal (natural science edition), 2008,34 (1), 86), the silver ions in the silver sesquioxide shows as trivalent, is the maxivalence manifestation of silver element, it is because therefore strong fungicidal activity and nontoxic be it is believed that a plurality of fields that can be applicable to.United States Patent (USP) 5223149 and domestic patent CN 101844066 A have announced that respectively two kinds of different methods methods synthesize trivalent silver iron compound technology, the trivalent silver iron compound good water solubility that obtains, and light is stable, and bactericidal property is stable.To reach the research of joining together but lack with the charcoal absorption characteristic.
Summary of the invention:
The object of the present invention is to provide a kind of Hydrothermal Preparation technology that filler is made the novel active carbon loading silver on the drinking water disinfection that water purifier can be applied to various places that can be used as.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Hydrothermal Preparation technology of novel active carbon loading silver, specific as follows: is 1 with Tetrasilver tetroxide and gac by mass ratio: it is evenly mixed that 800-12000 adds water, wherein every part of gac adds water 1-5 part, dry 10-40min under 60-150 ℃ of state then, add Potassium Persulphate or Sodium Persulfate again, sodium hydroxide or potassium hydroxide and distilled water, its Potassium Persulphate or Sodium Persulfate, the content that sodium hydroxide or potassium hydroxide add is 1-3 times of every part of Tetrasilver tetroxide, the amount that its distilled water adds is that every part of gac adds water 1-5 doubly, in 50-80 ℃ stirring reaction 1-2 hour at last, filter, and get final product with the pure water rinsing secondary is above.
The concrete mass ratio of described Tetrasilver tetroxide, gac, Potassium Persulphate or Sodium Persulfate, sodium hydroxide or potassium hydroxide: every 0.8-12kg gac adds Tetrasilver tetroxide 1g, Sodium Persulfate or Potassium Persulphate 1-3g, sodium hydroxide or potassium hydroxide 1-3g.
The contained silver of described gac is trivalent silver, and the molecule manifestation is a silver sesquioxide.
The present invention produces that to adhere to trivalent active carbon of silver technology simple, the combined coefficient height, energy consumption is low, silver ions is evenly distributed on gac, adhere to fixing, difficult drop-off.It is remarkable to multiple microbial process, to environment and human security.
Embodiment:
A kind of Hydrothermal Preparation technology of novel active carbon loading silver, specific as follows: is 1 with Tetrasilver tetroxide and gac by mass ratio: it is evenly mixed that 800-12000 adds water, wherein every part of gac adds water 1-5 part, dry 10-40min under 60-150 ℃ of state then, add Potassium Persulphate or Sodium Persulfate again, sodium hydroxide or potassium hydroxide and distilled water, its Potassium Persulphate or Sodium Persulfate, the content that sodium hydroxide or potassium hydroxide add is 1-3 times of every part of Tetrasilver tetroxide, the amount that its distilled water adds is that every part of gac adds water 1-5 doubly, in 50-80 ℃ stirring reaction 1-2 hour at last, filter, and get final product with the pure water rinsing secondary is above.
The concrete mass ratio of described Tetrasilver tetroxide, gac, Potassium Persulphate or Sodium Persulfate, sodium hydroxide or potassium hydroxide: every 0.8-12kg gac adds Tetrasilver tetroxide 1g, Sodium Persulfate or Potassium Persulphate 1-3g, sodium hydroxide or potassium hydroxide 1-3g.
The contained silver of described gac is trivalent silver, and the molecule manifestation is a silver sesquioxide.
For better explanation the present invention,, the present invention is elaborated below in conjunction with case study on implementation and experimental result.
Embodiment one:
Take by weighing Tetrasilver tetroxide 1g, grind evenly, sneak in the 1.2kg gac, add water 1000mL, evenly mixed, 60 ℃ of dry 40min add 10L distilled water and Potassium Persulphate and each 3g of potassium hydroxide are added when stirring again, took out stirring reaction 60 minutes for 80 ℃, filter, and with pure water rinsing four times.Utilize EDS (energy spectrum analysis) method measuring Tetrasilver tetroxide content and degree of uniformity on the gac on the difference, the results are shown in Table 1.
The shared mass percent of silver sesquioxide in table 1. gac
Embodiment two:
Take by weighing Tetrasilver tetroxide 1g, sneak in the 12kg gac, add water 10L, evenly mixed, 110 ℃ of dry 40min add 50L distilled water and Potassium Persulphate and each 3g of potassium hydroxide are added when stirring again, took out stirring reaction 60 minutes for 80 ℃, filter, and with pure water rinsing four times.For the adsorption strength of silver sesquioxide on gac is described, the gac that synthetic is loaded with silver sesquioxide was put in the flowing water flushing 12 hours, oven dry utilizes EDS (energy spectrum analysis) method measuring silver content and degree of uniformity on the gac on the difference, the results are shown in Table 2.
The shared mass percent of silver sesquioxide in the gac after table 2. massive laundering
Embodiment three:
Take by weighing Tetrasilver tetroxide 2g, sneak in the 1.6kg gac, add water 1.6L, mixed evenly 150 ℃ of dry 10min, whipped state add the 16L distilled water that is dissolved with Potassium Persulphate and each 4g of potassium hydroxide down, and 80 ℃ of reactions 20 minutes are filtered, and with pure water rinsing four times.For the adsorption strength of silver sesquioxide on gac is described, the gac that synthetic is loaded with silver sesquioxide is put in 53KHz in the ultrasonic cleaning instrument, supersound washing 1 hour, oven dry, utilize EDS (energy spectrum analysis) method measuring Tetrasilver tetroxide content and degree of uniformity on the gac on the difference, the results are shown in Table 3.
The shared mass percent of silver sesquioxide in the gac after table 3. supersound process
Claims (3)
1. the Hydrothermal Preparation technology of a novel active carbon loading silver, it is characterized in that: described preparation technology is as follows: is 1 with Tetrasilver tetroxide and gac by mass ratio: it is evenly mixed that 800-12000 adds water, wherein every part of gac adds water 1-5 part, dry 10-40min under 60-150 ℃ of state then, add Potassium Persulphate or Sodium Persulfate again, sodium hydroxide or potassium hydroxide and distilled water, its Potassium Persulphate or Sodium Persulfate, the content that sodium hydroxide or potassium hydroxide add is 1-3 times of every part of Tetrasilver tetroxide, the amount that its distilled water adds is that every part of gac adds water 1-5 doubly, in 50-80 ℃ stirring reaction 1-2 hour at last, filter, and get final product with the pure water rinsing secondary is above.
2. the Hydrothermal Preparation technology of novel active carbon loading silver according to claim 1, it is characterized in that: the concrete mass ratio of described Tetrasilver tetroxide, gac, Potassium Persulphate or Sodium Persulfate, sodium hydroxide or potassium hydroxide: every 0.8-12kg gac adds Tetrasilver tetroxide 1g, Sodium Persulfate or Potassium Persulphate 1-3g, sodium hydroxide or potassium hydroxide 1-3g.
3. the Hydrothermal Preparation technology of novel active carbon loading silver according to claim 1, it is characterized in that: the contained silver of described gac is trivalent silver, the molecule manifestation is a silver sesquioxide.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307475A (en) * | 2014-11-04 | 2015-01-28 | 东北林业大学 | Method for preparing coconut shell activated carbon with silver controlled-release sterilizing function through hydrothermal reaction |
| CN106751841A (en) * | 2016-12-23 | 2017-05-31 | 林圣灼 | A kind of resistance to warm water tube and preparation method thereof |
| CN106937647A (en) * | 2016-12-20 | 2017-07-11 | 江苏常州酞青新材料科技有限公司 | A kind of Rheological Phase Method preparation technology of novel silver-carried activated |
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| US5211855A (en) * | 1992-01-24 | 1993-05-18 | N. Jonas & Co., Inc. | Method of treating water employing tetrasilver tetroxide crystals |
| CN101058449A (en) * | 2007-05-18 | 2007-10-24 | 荆效民 | Method of preparing carbon-based high valence silver molecule crystal battery |
| CN101336640A (en) * | 2008-08-29 | 2009-01-07 | 宜兴市乔阳电器有限公司 | Tetrasilver tetroxide bactericide, preparation method and use thereof |
| CN101342480A (en) * | 2008-08-18 | 2009-01-14 | 宜兴市乔阳电器有限公司 | Tetroxide tetrsilver coal absorbent charcoal, preparation method and uses thereof |
| CN101574089A (en) * | 2009-05-22 | 2009-11-11 | 荆效民 | Method for preparing molecular crystal cell material for sterilizing and killing algae |
| CN101843256A (en) * | 2009-03-24 | 2010-09-29 | 张兴群 | Preparation of electric touch-out nano high-valence silver oxides and application thereof as disinfectants |
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2011
- 2011-01-06 CN CN201110001643.4A patent/CN102173477B/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| US5211855A (en) * | 1992-01-24 | 1993-05-18 | N. Jonas & Co., Inc. | Method of treating water employing tetrasilver tetroxide crystals |
| CN101058449A (en) * | 2007-05-18 | 2007-10-24 | 荆效民 | Method of preparing carbon-based high valence silver molecule crystal battery |
| CN101342480A (en) * | 2008-08-18 | 2009-01-14 | 宜兴市乔阳电器有限公司 | Tetroxide tetrsilver coal absorbent charcoal, preparation method and uses thereof |
| CN101336640A (en) * | 2008-08-29 | 2009-01-07 | 宜兴市乔阳电器有限公司 | Tetrasilver tetroxide bactericide, preparation method and use thereof |
| CN101843256A (en) * | 2009-03-24 | 2010-09-29 | 张兴群 | Preparation of electric touch-out nano high-valence silver oxides and application thereof as disinfectants |
| CN101574089A (en) * | 2009-05-22 | 2009-11-11 | 荆效民 | Method for preparing molecular crystal cell material for sterilizing and killing algae |
Non-Patent Citations (1)
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| 《污染防治技术》 20100430 王昕 等 碳基高价银分子晶体电池处理LAS污染源水试验研究 5-9 第23卷, 第02期 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307475A (en) * | 2014-11-04 | 2015-01-28 | 东北林业大学 | Method for preparing coconut shell activated carbon with silver controlled-release sterilizing function through hydrothermal reaction |
| CN106937647A (en) * | 2016-12-20 | 2017-07-11 | 江苏常州酞青新材料科技有限公司 | A kind of Rheological Phase Method preparation technology of novel silver-carried activated |
| CN106751841A (en) * | 2016-12-23 | 2017-05-31 | 林圣灼 | A kind of resistance to warm water tube and preparation method thereof |
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| CN102173477B (en) | 2014-02-19 |
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