Osisi Pulpwood
Pulpwood bụ osisi nke a na-eji eme pulp osisi maka mmepụta akwụkwọ.
Ngwa[dezie | dezie ebe o si]
- Osisi ndị a zụlitere kpọmkwem maka mmepụta anụ ahụ na-akpata 15% nke mmepụta anụ ọhịa ụwa, oké ọhịa ochie na-eto eto 9% na oké ọhịa nke abụọ na nke atọ na ndị ọzọ na-akwalite nguzozi.[1] A na-eme mgbatị ọhịa n'ọtụtụ ebe, yabụ osisi bụ ihe na-agbanwe agbanwe.
- A na-ejikwa osisi pulpwood dị ka a na-emepụta maka ụfọdụ ngwaahịa osisi, dị ka bọọdụ ntanye (OSB).
- Enwere ọchịchọ na-arịwanye elu maka pulpwood dị ka isi iyi nke bio-energy maka ọkụ na ime achịcha n'ime icheku ọkụ.
Ihe onwunwe[dezie | dezie ebe o si]
Ogologo eriri nke eriri cellulose bụ ihe kachasị mkpa nke pulpwood ma na-ekpebi ihe a ga-eji mee ihe. Nkewa mbụ bụ n'ime osisi dị nro na osisi siri ike, nke nwere eriri ogologo na nke dị mkpirikpi. N'ime akwụkwọ mmepụta fiber site na softwood na-enye ike na eriri sitere na hardwood na-eme ka opacity.
Ebe e si nweta ya[dezie | dezie ebe o si]
Ịchụ osisi[dezie | dezie ebe o si]
N'ịkụ osisi nke osisi ndị a gwakọtara agwakọta, a na-ejikarị osisi ndị ka mma eme ihe maka mmepụta osisi, ebe a na-ewepụta osisi na ihe ndị dị ala maka mmepụta pulpwood. Osisi pulp na-esikarị n'ụdị osisi anọ n'ọrụ ịkpụ osisi:
- Osisi ndị na-eto n'èzí, nke nwere alaka dị ukwuu n'okpuru ogwe osisi ahụ, wee mee ka osisi ndị na-adịghị mma.
- Osisi ndị nwụrụ anwụ ma ọ bụ ndị na-arịa ọrịa.
- Elu osisi ndị a na-ewepụta maka osisi (a naghị eji alaka osisi eme ihe ebe ọ bụ na ha nwere obere osisi a na-eji eme ihe mgbe ewepụchara ụgbụgbọ osisi ahụ).
- Obere osisi, nke pere mpe iji wepụta osisi.
A pụkwara iweghachite osisi ndị sitere n'okike naanị maka osisi pulpwood ebe, maka ihe dị iche iche, uru nke osisi dị ka osisi dị ala. Nke a nwere ike ịbụ n'ihi ụdị ndị a ma ama n'ọhịa (dịka ọmụmaatụ, ụfọdụ ọhịa aspen n'ebe ugwu North America), ma ọ bụ n'ihi ịdị nso nke ebe a na-awa osisi ma ọ bụ ihe igwe ihe.
Ubi osisi[dezie | dezie ebe o si]
A na-ewepụkwa osisi pulpwood site na ugbo osisi ndị e guzobere maka ebumnuche a kapịrị ọnụ nke ịzụlite osisi pulp, na obere ma ọ bụ obere mmepụta osisi. Monoculture nke ụdị ndị e bu n'uche maka pulpwood gụnyere loblolly na slash pine na ndịda USA; ụdị dị iche iche nke eucalyptus (nke a na-ahụkarị Eucalyptus globulus na Eucalyptis grandis) na Latin America, Iberian Peninsula, Australia, ndịda ọwụwa anyanwụ Eshia na ndịda Afrịka na acacia (nke a ma ama Acacia mangium) na ndịda ọ bụ ndịda Afríku.
Mkpụrụ osisi ndị a na-egbute[dezie | dezie ebe o si]
A na-ejikarị mgbatị mgbatịa mgbe ọkụ ọhịa, tornadoes, hurricanes, ma ọ bụ ọdachi ndị ọzọ na-emere onwe ha eme ihe maka osisi pulpwood. Isi iyi ọzọ nke osisi maka iji na Kraft pulping bụ osisi a na-enweta site na mmebi, nhazi ụlọ ọrụ nke osisi na pallets osisi.y
Osisi ndị fọdụrụnụ[dezie | dezie ebe o si]
A na-eji ihe ndị fọdụrụnụ eme ihe dị ka osisi pulp. Ihe kachasị mkpa n'ime ndị a bụ akụkụ ndị e gbuturu site na ọnụ osisi. Nke a na-enye osisi nwere ihe fọrọ nke nta ka ọ bụrụ naanị osisi sap na enweghị osisi obi. Osisi sapwood dị mfe ịkpụ. n'ihi ọdịdị na-emeghe na obere ọdịnaya nke ihe na-ewepụta karịa osisi etiti.[2] Ogologo eriri nke sapwood na-adịkarị ogologo karịa ogologo eriri nke heartwood. Osisi sapwood na-adịkarị arọ ma nke ahụ bụ uru mgbe ị na-emepụta pulp na-arụ ọrụ dịka ọ dị mkpa ka ọ ghara ịdị ọcha nke pulp osisi.
N'oge gara aga [nkọwa dị mkpa] sawdust nwere obere ojiji na mmepụta akwụkwọ. Ọ na-enye eriri dị mkpirikpi nke dabara adaba dị ka akụkụ nke arịa maka akwụkwọ na akwụkwọ edemede. Akpụkpọ anụ a na-akpụ akpụ aghọwo ihe dị gịrịgịrị ma nwee obere ezé na-eme ka ọkpụkpụ a na-akwa akwa dị obere dị ka isi iyi fiber.[3]
Osisi Pulpwood[dezie | dezie ebe o si]
Osisi pulpwood dị mkpa n'ụzọ akụ na ụba[dezie | dezie ebe o si]
- Osisi siri ike
- Akasia
- Aspen
- Birch
- Eucalyptus
- Maple
- Pacific Albus na osisi rọba
- Osisi ndị dị nro
- Pine
- Osisi Spruce
Ihe ndị mejupụtara osisi pulpwood ụfọdụ[dezie | dezie ebe o si]
| Ihe ndị mejupụtara osisi pulpwood (%)[4] | |||||
|---|---|---|---|---|---|
| Osisi | Cellulose | Lignin | Mannan | Ndị Arab | Xylan |
| Aspen | 56.5 | 16.3 | 2.3 | 0.4 | 16.0 |
| Akwụkwọ Birch | 44.5 | 18.9 | 1.5 | 0.5 | 24.6 |
| Maple na-acha ọbara ọbara | 44.8 | 24 | 3.5 | 0.5 | 17.3 |
| Balsam fir | 47.7 | 29.4 | 12.4 | 0.5 | 4.8 |
| Jack pine | 45.0 | 28.6 | 10.8 | 1.4 | 7.1 |
| Nnụnụ na-acha ọcha | 48.5 | 27.1 | 11.6 | 1.6 | 6.8 |
Ihe ndị ọzọ[dezie | dezie ebe o si]
A na-eji ihe ndị na-emepụta okpete na achara eme ihe na mmepụta akwụkwọ mposi.
Hụkwa[dezie | dezie ebe o si]
- Mpempe akwụkwọ
- Ihe igwe ihe
- Ngwunye akwụkwọ
- Osisi
Ihe odide[dezie | dezie ebe o si]
- ↑ Martin (2004). Paper Chase. Ecology Communications, Inc.. Archived from the original on 2007-06-19. Retrieved on 2007-09-21.
- ↑ (1999) "3", in Gullichsen: Forest Products Chemistry, Paper making Science and Technology. Helsinki, Finland: Capet YO. ISBN 952-5216-06-3.
- ↑ Biermann (1993). Essentials of Pulping and Paper making. San Diego: Academic Press, Inc.. ISBN 0-12-097360-X.
- ↑ Robert Summit, Alan Sliker. 1980. "Handbook of Materials Science, Volume IV: Wood". Florida: CRC Press, Inc.