scholarly journals Pengaruh Lama Penyimpanan Chip Terhadap Kualitas Pulp

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Rachmawati Apriani ◽  
Muhammad Akbar
Keyword(s):  
Acacia Mangium ◽  
Total Solid ◽  
Kappa Number ◽  
Acacia Crassicarpa

Pada penelitian ini bertujuan untuk mengetahui lama penyimpanan bahan baku chip guna mengetahui kualitas pulp yang dihasilkan dan pengaruhnya apabila disimpan dalam waktu yang lama. Di dalam penelitian ini ada beberapa tahap proses yakni, proses cooking dengan memvariasikan waktu penyimpanan chip selama 1 minggu, 2 minggu, 3 minggu dan 4 minggu dengan bahan baku yang berupa kayu Acacia mangium, Acacia crasicarpa, dan Eucalyptus. Untuk waktu optimum diperoleh maksimal waktu tunggu yakni dua minggu. Semakin lama chip disimpan maka akan membuat tingkat kekeringan chip meningkat sehingga lebih banyak larutan pemasakan yang akan digunakan. Dengan nilai parameter yang dihasilkan minggu kedua total solid acacia mangium 16.23%, acacia crassicarpa 16.78% dan Eucalyptus 17.23%. Nilai yield acacia mangium 54.87%, acacia crassicarpa 54.15% dan Eucalyptus 48.33%. Nilai kappa number Acacia mangium 22.3, Acacia crassicarpa 21.7 dan Eucalyptus 20.4. Nilai viskositas Acacia mangium 1228.23 cm3/gr, Acacia crassicarpa 1200.13 cm3/gr dan eucalyptus 1162.87 cm3/gr. Nilai REA Acacia mangium 9.43 g/L, Acacia crassicarpa 8.73 g/L dan eucalyptus 8.41 g/L. Nilai brightness Acacia mangium 28.23 %, Acacia crassicarpa 24.99 % dan Eucalyptus 37.51 %. Nilai reject Acacia mangium 0.57 %, Acacia crassicarpa 0.42 % dan Eucalyptus 0.31%.

scholarly journals Pengaruh pencampuran bahan baku acacia crassicarpa, acacia mangium dan eucalyptus terhadap kualitas pulp

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Rachmawati Apriani ◽  
Putra Novianto
Keyword(s):  
Acacia Mangium ◽  
Total Solid ◽  
Kraft Pulping ◽  
Kappa Number ◽  
Acacia Crassicarpa

Penelitian dengan judul “Pengaruh Pencampuran Bahan Baku Acacia Crassicarpa (AC), Acacia Mangium (AM) dan Eucalyptus(ECA) Terhadap Kualitas Pulp” bertujuan untuk mengetahui kualitas pulp yang dihasilkan dengan mencampurkan beberapa bahan baku dengan menggunakan metode kraft pulping. Parameter yang digunakan yaitu kappa number, viskositas, total solid, yield, brightness, Residual Effective Alkali (REA) dan reject. Rasio pencampuran bahan baku yang digunakan yaitu dengan pencampuran 2 bahan baku dan 3 bahan baku. Untuk pencampuran 2 bahan baku dilakukan dengan rasio ( 50:50; 60:40; 70:30; 80:20)%. Sedangkan untuk pencampuran 3 bahan baku menggunakan variasi (70:20:10)%. Dengan adanya rasio pencampuran bahan baku dalam pembuatan pulp dapat mengetahui rasio campuran optimal yang dapat dilakukan antara ketiga bahan baku tersebut maupun kedua bahan baku yang digunakan. Dari semua variasi yang dilakukan didapatkan hasil optimal yaitu pada rasio AC 70%:AM 20%: ECA 10% yang telah memenuhi standar parameter yang ditentukan, dengan nilai kappa number 20,65, viskositas 1139,19 cm3/g, yield 53,34%, total solid 16,59%, REA 9,95 g/l as Na2O, reject 0,297 %, dan brightness 33,53 % ISO.

Pre-bleaching of kraft acacia pulp

2019 ◽  
Vol 34 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Moinul Haque ◽  
Moumita Nanjiba ◽  
M. Sarwar Jahan ◽  
M. A. Quaiyyum ◽  
M. Zahangir Alam ◽  
...  
Keyword(s):  
Acacia Mangium ◽  
Kappa Number ◽  
Acacia Auriculiformis ◽  
Kraft Pulps ◽  
Oxygen Delignification ◽  
Acid Pretreatment ◽  
Acacia Hybrid ◽  
Pre Treatment ◽  
Hexenuronic Acid ◽  
Peroxyformic Acid

Abstract Kraft pulps from acacia hybrid, Acacia mangium of 8 years old and Acacia auriculiformis of 6, 8 and 10 years old were pre-treated with oxygen, peroxyformic acid and acid treatment prior to bleaching. The kappa number reduction was 52–63 % by oxygen delignification, 31–35 % by peroxyformic acid (PFA) pre-treatment and 11–13 % by acid pre-treatment. Oxygen delignified pulp required less chlorine dioxide charge to reach target brightness. At the consumption of 30 kg ClO2/ton of pulp, the pulp brightness reached to 65–71 % for the untreated pulp, 81–85 % for the oxygen delignified pulp, 81–82 % for the PFA treatment and 79–80 % for acid pre-treated pulp. COD load in bleached effluent was much lower in oxygen delignified pulp. Cold alkali extraction of unbleached and oxygen delignified pulps was also carried out with varying alkali charge to remove hexenuronic acid (HexA) from the pulp. Xylan removal from the pulp was insignificant and resulted in no removal of HexA. Acid pretreatment removed 55.7 % to 17.8 % HexA from acacia hybrid, 57.5 % to 16.3 % from A. auriculiformis of 10 years and 58.6 % to 20.1 % from A. auriculiformis of 6 years old, resulting in improved final pulp brightness.

scholarly journals Diversité Et Structure Floristiques Sous Des Peuplements d’Acacias Australiens En Zone Forestière De La Côte d’Ivoire

2016 ◽  
Vol 12 (35) ◽  
pp. 229
Author(s):  
Kouadio Kouassi Richard ◽  
Bakayoko Adama ◽  
N’guessan Kanga Anatole ◽  
Konan Djezou
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Acacia Mangium ◽  
Research Station ◽  
Cote D’Ivoire ◽  
Acacia Species ◽  
Côte D'ivoire ◽  
African Flora ◽  
Acacia Crassicarpa ◽  
The Impact

Since thirty years, four Australian Acacias species are introduced and studied in Anguédédou Research station. The station research is located in evergreen forest in the south of Côte d'Ivoire. The objective of the introduction of these species, is to rehabilitate degraded grounds and fallow after growing. The study aims at appreciating the impact of Acacia species on floristic diversity and the regeneration of forest species. For collecting data, we use quadrat method (35 x 50 m and 6 x 6 m).This method permitted the inventory of 212 species on 1.05 ha. Among these species, 1.89 % are Ivorian endemic species and 11.32 % are endemic of West African flora. The flora under the different species of Acacia are relatively diversified and dense. The majority of plant inventoried under Acacia species have small diameters. The highest specific richness average per plots (36 m2) were noted in the 11 years old parcels of Acacia mangium (26.20±2.34) and 27 years old parcels of Acacia auriculaeformis (25.40±2.34) and Acacia crassicarpa (30.60±2.34). The mean values of diameters (dbh ≥ 2.5 cm) fluctuate from 2.94±0.56 cm for the 8 years old stands of Acacia mangium to 8.09±0.56 cm for the 27 years old settlements of Acacia crassicarpa. The results show that leguminous trees can be used for recolonization of the deforested areas in order to rebuild quickly their plant biodiversity.

scholarly journals CHARACTERISATION OF MORINGA OLEIFERA (DRUMSTICK) WOOD FOR PULP AND PAPER MAKING

2021 ◽  
Vol 55 (3-4) ◽  
pp. 255-262
Author(s):  
ARVIND SHARMA ◽  
GUNJAN DHIMAN ◽  
PRITI S. LAL ◽  
RAVI D. GODIYAL ◽  
BIPIN P. THAPLIYAL
Keyword(s):  
Mechanical Strength ◽  
Moringa Oleifera ◽  
Acacia Mangium ◽  
Strength Properties ◽  
Kraft Pulping ◽  
Kappa Number ◽  
Pulp And Paper ◽  
Paper Making ◽  
Bleached Pulp ◽  
Optimized Conditions

"Moringa oleifera (drumstick) wood was evaluated in terms of its chemical composition, morphological features, Kraft pulping behavior, ECF bleaching and mechanical strength properties – important parameters for pulp and paper making – in comparison with Acacia mangium. Moringa oleifera was found to have the following composition: holocellulose 65.5%, lignin 20.5%, pentosan 11.6%, -cellulose 40.5% and extractives content of 5.15%, which made it comparable with the Acacia mangium wood sample. The alkali prehydrolysis of Moringa oleifera was carried out using 2% NaOH at 150 °C. The prehydrolysis liquor (PHL) was found to contain 50.9 mg/kg of calcium, 5140 mg/kg of potassium and 312 mg/kg of iron content. The prehydrolysis step was followed by Kraft pulping in order to obtain chemical grade pulp of kappa number 15-16 under optimized conditions. The Moringa oleifera pulp was bleached using the DEpD bleaching sequence to reach 85% brightness (ISO). The bleached pulp had an average fiber length of 1.21 mm, which was higher than that of Acacia mangium – 0.782 mm. The mechanical strength properties of the unbleached and bleached pulps, such as tear, tensile and burst indices, were also determined to show their suitability for pulp and paper production."

Bioactive phenolic substances in important tree species. Part 3: Knots and stemwood of Acacia crassicarpa and A. mangium

Holzforschung ◽  
2005 ◽  
Vol 59 (1) ◽  
pp. 94-101 ◽  
Author(s):  
Suvi P. Pietarinen ◽  
Stefan M. Willför ◽  
Rainer E. Sjöholm ◽  
Bjarne R. Holmbom
Keyword(s):  
Tree Species ◽  
Acacia Mangium ◽  
Acacia Crassicarpa ◽  
Phenolic Substances

Abstract Polyphenols in heartwood, sapwood, and knots of Acacia crassicarpa and Acacia mangium were analysed using GC, GC-MS, HPSEC, and NMR. Melacacidin and isomelacacidin dominated in A. crassicarpa and teracacidin and its ketone in A. mangium. Also, bi- and triflavonoids were tentatively identified in the samples. The amounts of polyphenols were larger in the knots than in the heartwood of both species, while the composition within the species was the same.

scholarly journals Perbandingan Kandungan Selulosa dan Lignin dari Kayu Acacia crassicarpa dan Acacia mangium

2020 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Melysa Putri ◽  
Shalsyabila Poeni
Keyword(s):  
Lignin Content ◽  
Gravimetric Method ◽  
Acacia Mangium ◽  
Chemical Compositions ◽  
Cellulose Content ◽  
Test Results ◽  
Dry Land ◽  
Acacia Crassicarpa

The development of the pulp & paper industries in Indonesia increase every year. To support the development of industries in Indonesia in order to be able to compete with similar industries from abroad, it is very important to pay attention to the quality of the paper produced. One way to determine the quality of the pulp & paper is by knowing the chemical composition and area where the wood grows. Important chemical compositions that can support the strength of wood and paper quality include cellulose and lignin. Therefore, this study was conducted to compare the levels of cellulose and lignin contained in Acacia crassicarpa wood from wetlands and Acacia mangium from dry land which is processed into pulp & paper with good quality. Determination of cellulose and lignin content in wood was carried out using the gravimetric method. Test results on Acacia crassicarpa wood species from wetlands obtained cellulose content of 55.48% and lignin 24.13%, while in Acacia mangium wood from dry land obtained cellulose content of 51.46% and lignin 27.66%. According to company standards that levels of cellulose and lignin in two different fields are obtained according to the standards set by the company. So for the results of testing Acacia crassicarpa wood from wetlands have the highest levels of cellulose with low levels of lignin

scholarly journals PENGARUH PEMUTIHAN OKSIGEN DUA TAHAP TERHADAP KUALITAS PULP Acacia mangium

2016 ◽  
Vol 1 (02) ◽  
Author(s):  
Paryono ,
Keyword(s):  
Acacia Mangium ◽  
Kappa Number ◽  
Cooking Time ◽  
Maximum Temperature ◽  
Bleaching Process ◽  
Two Stages ◽  
Cooking Conditions ◽  
Unbleached Pulp ◽  
Made In ◽  
Oxygen Bleaching

In this study, the unbleached pulp was made in the laboratory by cooking conditions: Active Alkali (AA) 18%, Sulfidity (S) 32%, ratio 1: 4, maximum temperature 165 oC, with cooking time of 2 + 1.5 hours. Pulp with kappa number of 20.01 and 52.30% yield was produced. Oxygen bleaching process was varied into a single stage bleaching process, a two-stage bleaching process with and without washing. The results showed that the two stages oxygen bleaching processes, without washing with variation of NaOH addition 100:0 and 80:20 gave the higher reduction of kappa number and the increasing of bleaching yield compare to one stage oxygen bleaching. The higher reduction of kappa number gave the higher of reduction of viscosity, but had no effect on fiber composition. Two oxygen stage bleaching without washing is recommended.Key words : oxygen bleaching, kappa number, viscosity, yield filtered  ABSTRAKPada penelitian ini pulp belum putih dibuat di laboratorium dengan kondisi pemasakan : AA 18 %, S 32 %, rasio 1 : 4, temperatur maksimum 165 OC, dan waktu 2 + 1,5 jam. Dihasilkan pulp dengan bilangan kappa 20,01 dan rendemen tersaring 52,30 %. Proses pemutihan oksigen divariasi menjadi proses pemutihan satu tahap, proses pemutihan dua tahap dengan dan tanpa pencucian. Hasil penelitian menunjukkan pemutihan oksigen dua tahap tanpa proses pencucian dengan variasi penambahan NaOH 100 : 0 dan 80 : 20 memberikan penurunan bilangan kappa yang lebih besar dan peningkatan rendemen pemutihan dibanding dengan pemutihan oksigen satu tahap. Penurunan viskositas sebanding dengan penurunan bilangan kappa, dimana semakin besar penurunan bilangan kappa juga mengakibatkan penurunan viskositas yang semakin besar tetapi tidak berpengaruh terhadap komposisi serat. Pemutihan oksigen dua tahap tanpa proses pencucian sangat disarankan. Kata kunci : pemutihan oksigen, bilangan kappa, viskositas, rendemen tersaring  

scholarly journals POTENSI Acacia crassicarpa SEBAGAI BAHAN BAKU PULP KERTAS UNTUK HUTAN TANAMAN INDUSTRI

2015 ◽  
Vol 5 (01) ◽  
Author(s):  
Susi Sugesty ◽  
Teddy Kardiansyah ◽  
Wieke Pratiwi
Keyword(s):  
Acacia Mangium ◽  
Raw Material ◽  
Good Prospect ◽  
Cellulose Content ◽  
Plantation Forest ◽  
Standard Requirement ◽  
Elemental Chlorine ◽  
Free Process ◽  
Acacia Crassicarpa ◽  
Industrial Plantation

Industrial Plantation Forest of Acacia mangium for pulp industry in Indonesia has declined its productivity due to a decrease in the quality of soil on the second cycle and thereafter. Therefore, the alternative raw material for pulp has to be found as a substitute for Acacia mangium. Research on the various ages of Acacia crassicarpa (4; 5 and 6 years old) as the pulp raw material has been done. Pulp was prepared using the kraft process. The optimum cooking condition with target Kappa Number of 15 ± 1 was obtained at 20-22% active alkali, 30% sulfidity, temperature of 165ºC, liquor ratio 1:4 and H factor of 1300. Pulp was then bleached using ECF (Elemental Chlorine Free) process with the sequence of ODEDED and XDEDED. Results showed that pulp yield was high enough and meet the standard requirement according to SNI 6107:2009, Pulp Kraft Putih Kayudaun (LBKP). hollocellulose content of Acacia crassicarpa (79,99-80,87%) and α cellulose content (43,33-48,62%) were higher compared to those of Acacia mangium (<79% and <43%) respectively, while lignin and extractive contents were significantly low. It was found that Acacia crassicarpa of 5 years old resulted in better bleached kraft pulp compared to those of 4 and 6 years old. It is concluded that Acacia crassicarpa has a good prospect to be developed in  Industrial Plantation Forest as raw material for pulp. Keywords: Acacia crassicarpa, ages, raw material, ECF, pulp   ABSTRAK Hutan Tanaman Industri Acacia mangium untuk industri pulp yang dikembangkan di Indonesia saat ini mengalami penurunan produktivitas akibat penurunan kualitas tempat tumbuh pada daur kedua dan seterusnya. Oleh sebab itu perlu dicari bahan baku alternatif pengganti Acacia mangium. Untuk itu telah dilakukan penelitian terhadap Acacia crassicarpa berbagai umur yaitu 4 ; 5 dan 6 tahun. Pembuatan pulp kertas dilakukan dengan proses kraft. Kondisi pemasakan yang optimal dan memenuhi target bilangan Kappa 15 ± 1, diperoleh pada penggunaan alkali aktif 20-22%, sulfiditas 30%, suhu 165ºC, rasio 1:4 dan faktor H 1300. Pemutihan pulp dilakukan dengan proses ECF (Elemental Chlorine Free) yang dikenal ramah lingkungan dengan tahapan ODEDED dan XDEDED. Hasil pulp kraft putih mempunyai rendemen cukup tinggi dan memenuhi pesyaratan spesifikasi SNI 6107:2009, Pulp Kraft Putih Kayudaun (LBKP) kecuali indeks sobek. Kayu Acacia crassicarpa mempunyai kadar holoselulosa (79,99-80,87%) dan selulosa alfa (43,33-48,62%) yang cukup tinggi bila dibandingkan dengan Acacia mangium (<79% dan <43%), serta kadar lignin dan ekstraktif yang cukup rendah. Kayu Acacia crassicarpa umur 5 tahun menghasilkan pulp kraft putih paling baik dibandingkan umur 4 dan 6 tahun. Dengan demikian, kayu Acacia crassicarpa mempunyai potensi untuk dikembangkan di Hutan Tanaman Industri sebagai bahan baku pulp. Kata kunci: Acacia crassicarpa, umur, bahan baku, ECF, pulp

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