EFEKTIVITAS FUNGI CIPANAS DALAM BIOKONVERSI TANDAN KOSONG KELAPA SAWIT (TKKS) MENJADI PULP KERTAS KORAN

Ridwan Achmad Pasaribu, Setyani Budi Lestari

Abstract


Empty oil-palm bunches (EOPB), due to high contents of lignin (24.68 percent) and extractives (5.57 percent), is less economical when it is pulped using the conventional semi-chemical or semi- mechanical process into newsprint pulp. The conventional process is unable to partly dissolve the lignin and ex/ractives effectively, and consequently produces EOPB pulp with undesirable results, i.e. low screened yield, poor qualities, and longer defiberation and fibrillation duration. As one way to cope with it, the EOPB prior to the soda anthraquinone (AQ) semi-chemical pulping should be pretreated by biodelignification.

In this regard, the EOPB chips were biodelignified through the inoculation of the raw materials with the Cipanas-strainfungi (CPSOI) as much as 5-and 10-percent (oven dry weight), and further incubated for I0-and 20-days. Afterwards, the fungi-treatedchips were semi-chemically pulped using the soda-AQ process into newsprint pulp after they are cooked in an electrically heated digester. After the cooking, the EOPB chips were defiberized in a Hollander beater, stone-refined, and then fibrillated in a Niagara beater into ultimately the EOPB pulp with the degree offreeness at 300 CSF. The handsheet was further prepared from the EOPB pulp with the basis weight 45 - 50 gram per m3. This experiment was mainly aimed at evaluating the effectiveness of biodelignification using Cipanas-strain fungi on the chemical components, processing properties, and qualities of the resulting EOPB pulp for newsprint. The chemical analysis revealed that the inoculation of the EOPB chips with 10-percent of CPSO I isolat followed by 20-day incubation period brought about the decreases in lignin and extractive contents by 6.32-and-2.61-percent, respectively. Besides such biodelignification also induces the increase in pulp yield (by maximally 3.98 percent), and the decreases in kappa number and energy consumption (by 11.19 and 17.56 percent, respectively). Further, the EOPB 's pulp handsheet for newsprint achieved particular values of tensile index (43.67 Nm/gr), tear index (7.96 Nm2/kg), opacity (93.98 percent) and brightness (58.04 °GE) which corresponded to those of Indonesian National Standard (SNI) No.14-0691-1998 for newsprint.


Keywords


Pulp, pulp kertas koran, biodelignifikasi, TKKS, isolat, fungi Cipanas.

References


Anonim. 1981. SII 0435-81. Cara uji ketahanan sobek kertas dan karton. Departemen Perindustrian, Jakarta.

Anonim. 1981. SII 0436-81. Cara uji ketahanan tarik kertas dan karton. Departermen

Perindustrian, Jakarta.

Anonim. 1981. SII 0437-81. Cara uji derajat putih kertas. Departernen Perindustrian, Jakarta.

Anonim. 1981. SII 04443-81. Cara uji kadar selulosa, alfa beta, gamma dalam kayu dan pulp. Departemen Perindustrian, Jakarta.

Anonim. 1981. SII 0528-81. Cara uji kadar lignin kayu dan pulp (metode klason). Departemen Perindustrian, Jakarta.

Anonim. 1981. SII 0531-81. Cara uji opasitas cetak kertas. Departemen Perindustrian, Jakarta.

Anonim. 1985. SII 1293-85. Cara uji kadar sari (ekstrak alkohol) benzena. Departemen Perindustrian, Jakarta.

Anonim. 1986. SII 1879-86. Cara uji kelarutan kayu dan pulp dalam natrium hidroksida 1%. Departemen Perindustrian, Jakarta.

Anonim. 1987. SII2105-87. Cara uji kadar pentosan dalam kayu. Departemen Perindustrian, Jakarta.

Anonim. 1993. Potensi kelapa sawit dan limbah ligno selulosa kelapa sawit. Biro Pusat Statistik, Jakarta.

Anonim. 1996. Statistik Perkebunan Indonesia 1994 - 1995. Kelapa sawit. Direktorat Jendral Perkebunan, Jakarta.

Fullerton, T.J. 1979. Anthraquinone pulping. What's New in Forest Research No. 72. Forest Research Institute, New Zealand.

Kirck, T.K. & H.M. Chang. 1990. Biotechnology in pulp and paper manufacture. Butterworth -Heinemann, Amerika.




DOI: https://doi.org/10.20886/jphh.2003.21.3.189-201

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