PENGARUH UMUR POHON MELINA (Gmelina arborea Roxb) DAN PENAMBAHAN ADITIF PADA PROSES SULFAT TERHADAP SIFAT PULP

Rena M Siagian

Sari


The investigation was aimed at assessing the influence of tree level of maturity and the amount of additive used in the sulphate cooking process on the properties of the corresponding resulting pulp. The trees selected in this regard were Gmelina arborea Roxb., consisting of four levels of maturities, i.e. 6, 8, 10 and 12 years. The additives used in the process were polysulfide (PS) and anthraqinone. The anthraquinone (AQ) was added 0.1 percent, without PS, and in the other cooking PS at 4.0 percent, without AQ. Meanwhile, this modified sulphate process was also conducted with any additive 4.0 percent PS and 0. 1 percent AQ. As a control. the sulphate cooking without both was carried out as well. Other cooking conditions were kept constant, i.e. active alkali 16 percent, sulphidity 25 percent, wood to liquor ratio 1 : 4, maximum temperature 170 °C. and total cooking durations 4 hours.

The results revealed that the increase in tree maturity up to 10 years produced pulp with the highest yield. However. the pulp yield decreased when the maturity reached 12 years, which was the case when the pulp was obtained from the 6-years wood material. The use of 0.1 percent AQ additive did not improve the pulp yield but decreased the kappa number. The highest yield was obtained at 4. 0 percent PS additive, followed by the one using the combination of 4. 0 percent PS and 0.1 percent AQ.

Melina wood from the corresponding 6 year old trees appeared technically suitable as raw material for pulp, since it strength was fairly high to meet the Indonesian National Standard (SNI) for the one from long-fibered softwood. Besides that. the use of additive improved the strength of pulp.


Kata Kunci


Gmelina arborea. umur pohon, modifikasi proses sulfat, aditif sifat pulp

Teks Lengkap:

PDF

Referensi


Anonymous, 1989. Cara Uji Bilangan Kappa Pulp. SNI 14-0493-1989. Departemen

Perindustrian, Jakarta

Casey, J.P., 1980. Pulp and Paper: Chemistry and Chemical Technology. Vol.I. 3rd Ed.

A Wiley lnterscience Publishers, Inc., New York-Toronto-Brisbane

Chang Hou-min, 1994. Environmentally Friendly Processes for Production of Bleached Kraft Pulp. Prosiding Seminar Teknologi Pemutihan dengan ECF (Elementally Chlorine Free) dalam lndustri Pulp dan Kertas di Indonesia. Departemen Perindustrian, Bandung.

Fengel, D and G. Wegener, 1984. Wood: Chemistry, Ultrastructure, Reactions. Walter de Gruyter, Berlin-New York.

lbnusantosa, Gatot, 1994. Teknologi Proses Pemutihan Pulp yang Berwawasan Lingkungan. Prosiding Seminar Teknologi Pemutihan dengan ECF (Elementally Chlorine Free) dalam Industri Pulp dan Kertas di Indonesia. Departemen Perindustrian, Bandung.

Jiang, J.E, 1989. Extended Modified Cooking of Southern-pine with Polysulfide: Effect on Pulp Yield and Physical Properties. Tappi 77 (2): 120 - 124.

Martawijaya, Abdurahim & Barly , 1995. Sifat dan kegunaan kayu gmelina, prosiding ekspose hasil litbang hasil hutan dan social ekonomi kehutanan, pusat litbang hasil hutan dan social ekonomi kehutanan, bogor

Peh, T.B. & K.C. Khoo. 1984. Timber properties of aciacia mangium, gmelina arborea, paraserianthes falcataria and their utilization aspects . the Malaysian forester 47 (4) : 285-303

Siagian, R.M. dan Han Roliadi, 1998. Possible kraft polysulfide- anthraquinone pulping of fast growing tropical eucalyptus grandis wood spesies, proceedings of the international wood science seminar. JSPS-LIPI core university program in the field of wood science, serpong, Indonesia.

Siagian, Eero, 1981. Wood chemistry : fundamentals and aplications. Academic press. New York- London- toronto- Sydney- san fransisco

Sudjana, 1994. Kraft pulping dan chlorine bleaching serta masalah-masalah lingkungan yang ditimbulkannya. Prosiding seminar teknologi pemutihan dengan ECF (elementally chlorine free) Dallam industry pulp dan kertas diindonesia. Departemen perindustrian. Bandung.




DOI: https://doi.org/10.20886/jphh.2002.20.4.259-269

Refbacks

  • Saat ini tidak ada refbacks.


JURNAL PENELITIAN HASIL HUTAN TERINDEKS DI:

Lebih banyak...


Copyright © 2015 | Jurnal Penelitian Hasil Hutan (JPHH, Journal of Forest Products Research)
eISSN : 2442-8957, pISSN : 0216-4329
JPHH is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.