MD3602G2 - 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
- MD3602G2 MD3602G2 MDA20070037A MD20070037A MD3602G2 MD 3602 G2 MD3602 G2 MD 3602G2 MD A20070037 A MDA20070037 A MD A20070037A MD 20070037 A MD20070037 A MD 20070037A MD 3602 G2 MD3602 G2 MD 3602G2
- Authority
- MD
- Moldova
- Prior art keywords
- temperature
- nutshell
- during
- active coal
- hours
- Prior art date
Links
- 239000003245 coal Substances 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 5
- 238000007385 chemical modification Methods 0.000 title abstract 3
- 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
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 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
- 238000001784 detoxification 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
- 238000003801 milling Methods 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
- 239000010865 sewage Substances 0.000 abstract 1
- 239000003643 water by type Substances 0.000 abstract 1
Landscapes
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to processes for obtaining active coal from nutshell and for chemical modification thereof and can be applied for obtaining adsorbents used for treatment of sewage waters, gases, for liquid decoloration and in medicine for human body detoxification.The process for obtaining active coal from nutshell includes milling of nutshell, separation of fraction of 2…4 mm, which is treated with 87% concentrated orthophosphoric acid in the ratio of 1:4, correspondingly, during 2…15 days at the room temperature with periodic mixing, followed by drying at the temperature of 80…100°C during 12…16 hours. Then the raw material granules are activated during 5…7 hours at the temperature of 380…410°C, it is neutralized with an alkaline up to pH 7, afterwards the mixture is cooled up to the room temperature and it is removed the liquid phase by centrifugation, and the obtained active coal is washed with demineralized water and dried at the temperature of 120°C up to a constant mass.The process for chemical modification of the obtained active coal includes its oxidation with 30% hydrogen peroxide in the ratio of 1:(9…12), correspondingly, during 60…80 hours, treatment of the obtained product with 1% KOH, neutralization with 0,1N HCl, washing with demineralized water, drying at the temperature of 100…105°C, treatment with melamine or 2-aminopyridine in the ratio of 1:(20…50), correspondingly, at the room temperature during 72…96 hours, washing of the obtained product with demineralized water and drying thereof at the temperature of 100…105°C up 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 MD3602F1 (en) | 2008-05-31 |
| MD3602G2 true 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) |
Families Citing this family (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 |
Citations (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
Patent Citations (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 |
Non-Patent Citations (3)
| Title |
|---|
| Boki K., Tanada S., Kita T., Nakamura T., Takahashi H., Hamada R. Increase in micropore volume of N-containing activated carbon treated with methylol * |
| Boki K., Tanada S., Kita T., Nakamura T., Takahashi H., Hamada R. Increase in micropore volume of N-containing activated carbon treated with methylol melamine urea solution. Cellular and Molecular Life Sciences, 1983, vol. 39, Nr. 2, p. 143-144 * |
| melamine urea solution. Cellular and Molecular Life Sciences, 1983, vol. 39, Nr. 2, p. 143-144 * |
Also Published As
| Publication number | Publication date |
|---|---|
| MD3602F1 (en) | 2008-05-31 |
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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 |