Osisi Pulpwood

Pulpwood bụ osisi nke a na-eji eme pulp osisi maka mmepụta akwụkwọ.

Ngwa

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

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

Ịchụ osisi

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

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

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

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

Osisi pulpwood dị mkpa n'ụzọ akụ na ụba

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

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

A na-eji ihe ndị na-emepụta okpete na achara eme ihe na mmepụta akwụkwọ mposi.

Hụkwa

Mpempe akwụkwọ
Ihe igwe ihe
Ngwunye akwụkwọ
Osisi

Ihe odide

↑ 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.

[chase-1] Martin (2004). Paper Chase. Ecology Communications, Inc.. Archived from the original on 2007-06-19. Retrieved on 2007-09-21.

[2] (1999) "3", in Gullichsen: Forest Products Chemistry, Paper making Science and Technology. Helsinki, Finland: Capet YO. ISBN 952-5216-06-3.

[3] Biermann (1993). Essentials of Pulping and Paper making. San Diego: Academic Press, Inc.. ISBN 0-12-097360-X.

[4] Robert Summit, Alan Sliker. 1980. "Handbook of Materials Science, Volume IV: Wood". Florida: CRC Press, Inc.

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