MD3602F1 - Process for obtaining active coal from nutshell and process for chemical modification thereof - Google Patents
Process for obtaining active coal from nutshell and process for chemical modification thereof Download PDFInfo
- Publication number
- MD3602F1 MD3602F1 MDA20070037A MD20070037A MD3602F1 MD 3602 F1 MD3602 F1 MD 3602F1 MD A20070037 A MDA20070037 A MD A20070037A MD 20070037 A MD20070037 A MD 20070037A MD 3602 F1 MD3602 F1 MD 3602F1
- Authority
- MD
- Moldova
- Prior art keywords
- hours
- chemical modification
- drying
- room temperature
- treatment
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 5
- 238000007385 chemical modification Methods 0.000 title abstract 3
- 239000003245 coal Substances 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 8
- 238000001035 drying Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- ICSNLGPSRYBMBD-UHFFFAOYSA-N 2-aminopyridine Chemical compound NC1=CC=CC=N1 ICSNLGPSRYBMBD-UHFFFAOYSA-N 0.000 abstract 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- 241000758789 Juglans Species 0.000 abstract 2
- 235000009496 Juglans regia Nutrition 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- 235000020234 walnut Nutrition 0.000 abstract 2
- 238000005406 washing Methods 0.000 abstract 2
- 229920000877 Melamine resin Polymers 0.000 abstract 1
- 239000003463 adsorbent Substances 0.000 abstract 1
- 238000005119 centrifugation Methods 0.000 abstract 1
- 238000002845 discoloration Methods 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000007791 liquid phase Substances 0.000 abstract 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
Landscapes
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Inventia se refera la procedeele de obtinere a carbunelui activ din coaja de nuca si de modificare chimica a lui si poate fi aplicata pentru obtinerea adsorbantilor, utilizati la epurarea apelor reziduale, a gazelor, la decolorarea lichidelor si in medicina pentru detoxicarea organismului uman. Procedeul de obtinere a carbunelui activ din coaja denuca include maruntirea cojilor de nuca, separarea fractiei de 2…4 mm, care se trateaza cu acid ortofosforic concentrat 87% in raport, respectiv, de 1:4 timp de 2…15 zile la temperatura camerei cu amestecarea periodica, urmata de uscarea la temperatura de 80…100°C timp de 12…16 ore. Apoi granulele de materie prima se activeaza timp de 5…7 ore la temperatura de 380…410°C, se neutralizeaza cu o baza alcalina pana la pH 7, dupa care amestecul se raceste pana la temperatura camerei si se inlatura faza lichida prin centrifugare, iar carbunele activobtinut se spala cu apa demineralizata si se usuca la temperatura de 120°C pana la o masa constanta. Procedeul de modificare chimica a carbunelui activ obtinut include oxidarea lui cu peroxid de hidrogen de 30% in raport, respectiv, de 1:(9…12) timpde 60…80 ore, tratarea produsului obtinut cu KOH de 1%, neutralizarea cu HCl 0,1N, spalarea cu apa demineralizata, uscarea la temperatura de 100…105°C, tratarea cu melamina sau 2-aminopiridina in raport, respectiv, de 1:(20…50) la temperatura camerei timp de 72…96 ore, spalarea produsului obtinut cu apa demineralizata si uscarea lui la temperaturade 100…105°C pana la o masa constanta.The invention relates to the processes for obtaining the activated carbon from the walnut bark and its chemical modification and can be applied to obtain the adsorbents, used for the treatment of waste water, gases, discoloration of liquids and medicine for detoxifying the human body. The process of obtaining the activated charcoal from the denuca bark includes the shredding of the walnut shells, the separation of the fraction of 2 ... 4 mm, which is treated with 87% concentrated orthophosphoric acid, respectively, of 1: 4 for 2 ... 15 days at room temperature. with periodic mixing, followed by drying at 80 ... 100 ° C for 12 ... 16 hours. Then the raw material granules are activated for 5 ... 7 hours at 380 ... 410 ° C, neutralized with an alkaline base to pH 7, after which the mixture is cooled to room temperature and the liquid phase is removed by centrifugation, and the obtained activated carbon is washed with demineralized water and dried at 120 ° C to a constant mass. The process of chemical modification of the activated charcoal includes its oxidation with 30% hydrogen peroxide, respectively, of 1: (9 ... 12) for 60 ... 80 hours, treatment of the product obtained with 1% KOH, neutralization with HCl 0 , 1N, washing with demineralized water, drying at a temperature of 100… 105 ° C, melamine or 2-aminopyridine treatment, respectively, of 1: (20… 50) at room temperature for 72… 96 hours, washing the product obtained with demineralized water and its drying at temperatures of 100… 105 ° C to a constant mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20070037A MD3602G2 (en) | 2007-02-08 | 2007-02-08 | Process for obtaining active coal from nutshell and process for chemical modification thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20070037A MD3602G2 (en) | 2007-02-08 | 2007-02-08 | Process for obtaining active coal from nutshell and process for chemical modification thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD3602F1 true MD3602F1 (en) | 2008-05-31 |
| MD3602G2 MD3602G2 (en) | 2008-12-31 |
Family
ID=39471734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDA20070037A MD3602G2 (en) | 2007-02-08 | 2007-02-08 | Process for obtaining active coal from nutshell and process for chemical modification thereof |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD3602G2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2589484C1 (en) * | 2015-05-26 | 2016-07-10 | Иван Иванович Пилипченко | Method of producing selective sorbent |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD66G2 (en) * | 1994-03-02 | 1995-01-31 | Uzina "Ghidroprivod" | The hydroengine with planetary rotor with inner drainage |
| MD1005G2 (en) * | 1998-02-23 | 1999-07-31 | Институт Химии Академии Наук Молдовы | Process for activated charcoal obtaining |
| MD1985G2 (en) * | 2002-01-28 | 2003-02-28 | Институт Химии Академии Наук Молдовы | Process for activated coal obtaining from fruit stones and nutshell |
| MD2496G2 (en) * | 2003-08-05 | 2005-02-28 | Институт Химии Академии Наук Молдовы | Process for obtaining active coal from vegetal by-products with concomitant obtaining of phosphate solutions |
-
2007
- 2007-02-08 MD MDA20070037A patent/MD3602G2/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2589484C1 (en) * | 2015-05-26 | 2016-07-10 | Иван Иванович Пилипченко | Method of producing selective sorbent |
Also Published As
| Publication number | Publication date |
|---|---|
| MD3602G2 (en) | 2008-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG4A | Patent for invention issued | ||
| KA4A | Patent for invention lapsed due to non-payment of fees (with right of restoration) | ||
| MM4A | Patent for invention definitely lapsed due to non-payment of fees |