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"Penelitian ini bertujuan untuk mengetahui kondisi optimum proses pembuatan pulp kertas menggunakan NaOH dalam pelarut metanol. Proses pembuatan pulp dari TKKS meliputi pemasakan, pencucian, penghancuran, penyaringan, pemutihan clan proses recovery metanol yang telah digunakan. Beberapa faktor yang berpengaruh terhadap persen yield pulp antara lain konsentrasi pelarut, temperatur pemasakan, waktu pemasakan, jenis clan sifat katalis. Kondisi optimum pada proses pembuatan pulp clan TKKS menggunakan NaOH dalam pelarut metanol yaitu konsentrasi metanol 35%, konsentrasi NaOH 1,5% dengan menggunakan MgSO4sebesar 10 gram pada temperatur pemasakan1151 35 00 untuk mendapatkan yield pulp sebesar47,60%. Kondisi optimum proses bleaching sehingga didapatkan derajat putih yang baik tanpa merusak sifat fisik pulp meliputi kekuatan tank, retak, kekuatan sobek clan ketahanan lipat yaitu dengan menggunakan 3% H02 selama proses bleaching, menghasilkan derajat putih sebesar 42,56% GE yang memenuhi standard yang berlaku. Metanol sebagai alternatif pelarut pada proses pembuatan pulp dapat digunakan sebagai penganti ethanol, bahkan dengan efisiensi persen yieldnya yang lebih besar. Persen recovery metanol rata-rata pada kondisi optimum proses pemasakan clan penghancuran adalah sebesar 19,80% clan 27,40%."

"In the period 1996 to 2006,Indonesian pulp and paper production increased rapidly from 5.5 million tones to 16.5 million tones

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"Oil palm biomass derived from oil palm processing plant has a very abundant availability or nearly equal to the yield of crude palm oil. This paper provides a review of the chemical and fibers characteristics from the empty fruit bunches of oil palm tree associated with the properties of pulp and papermaking. Potential use of fibers from oil palm tree, which is included in the group of nonwood, as raw material for pulp and paper is large enough for wood substitution. Opportunities to use oil palm tree fibers as raw material for pulp and paper in industrial scale is very prospective. "

"In this experiment, xylanase was used prior to bleaching. The dosages of xylanase are 0.25; 0,5; 0,75; 1;1,25 kg/ton of chips. The pulps after pretreatment were tested and treated with D0ED1D2 bleaching sequences. The result shoew that xylanase can decreasekappa number as much as 10.33-11.45. The optinum kappa number (10.33) was obtaidned by addition xylanase 0.75 kg/ton of chips. Xylanase also increases increase bleachability of pulp and decrease dirt on pulp, from initial brightness 82.4 % ISO to 83.10 % ISO. While dirt from 9.5 mm2/m was decrease to 7-8 mm2/m2. Xylanase was able to decrease dichloromethane extractive content in bleached pulp as much as 0.06-0.14 point. Xylanase also increases bleaching selectivity, as physical strength of pulp tend to increase."

"The organic complex compound contained in pulp and paper's mill wastewater such as lignin and cellulose is difficult to be degraded, that causes low biodegradability of aerobic microorganism in high organic loading rate actinated sludge system. Xylanase and cellulase aplication experiment on activated sludge system process had taken in batch process, aimed to enchance organic complex com[pound's biodegradation effectivity. The experiment used a combination of pulping's wastewater (black liquor) and paper's mill waste to have COD+1500 mg/L. The treatment variations are: activated sludge concentrations (MLSS), enzyme dosages, and residence time. Activated sludge concentrations are MLSS 0, 2000, and 4000 mg/L, xylanase and cellulase's dosages are control, 50 and 100 ppm. and residence time are 12, 18, and 24 hours. This experiment yield highest COD reduction of 35,55% in activated sludge with 50 ppm xylanase application, where 50,96% reached with 100 ppm cellulase application, both occurred in MLSS 2000 mg/L and residence time 24 hours. Compared with control whose only reached COD reduction of 31,12 %, xylanase enchanced the reduction 4,43 % when cellulase enhanced 19,84%."