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Sri Komarayati

Pusat Penelitian dan Pengembangan Hasil Hutan

Author-ID : 2621570

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Materials Science & Nanotechnology

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PEMANFAATAN SERBUK GERGAJI LIMBAH INDUSTRI SEBAGAI KOMPOS Sri Komarayati
Jurnal Penelitian Hasil Hutan Vol 14, No 9 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Tulisan ini menyajikan hasil percobaan pengomposan serbuk gergaji dengan sasaran menemukan suatu cara yang efisien untuk memproduksi kompos dari serbuk gergaji dicampur dengan mikroorganisme efektif, kotoran ayam dan air dalam dua macam perlakuan:- Serbuk gergaji setebal 15 cm ditumpuk di atas permukaan tanah, diselang-selingi dengan inokulum EM4 dan kotoran ayam.- Serbuk gergaji yang telah dicampur dengan inokulum, kotoran ayam dan air, kemudian dimasukkan ke dalam karung dan ditutup. Sebulan sekali karung dibuka dan campuran tadi diaduk. Kedua perlakuan tersebut dibiarkan selama empat bulan.Hasil penelitian menunjukkan bahwa nisbah C/N masih tinggi, kecuali untuk perlakuan pertama yaitu serbuk gergaji kayu karet nisbah C/N adalah 19,94 (kurang dari 20). Kadar lignin serbuk gergaji kayu pinus pada perlakuan kedua menurun sebesar 6,8 % dan pada perlakuan pertama mengalami penurunan sebesar 8,5 %. Sedangkan kadar lignin kompos serbuk gergaji kayu karet pada perlakuan kedua dan perlakuan pertama menurun sekitar 13,2 % dan 17,7 %. Kompos dapat dibuat dari serbuk gergaji melalui perombakan oleh mikroba, akan tetapi memerlukan waktu yang lama dan cukup penambahan sumber nitrogen.

FERMENTASI PADAT DARI BEBERAPA LIMBAH LIGNOSELULOSA Tjutju Nurhayati Syahri; Sri Komarayati; Gusailina Gusailina
Jurnal Penelitian Hasil Hutan Vol 6, No 2 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Lignocellulosic wastes such as rubber wood saw dust, bagasse, cayuput oil waste, municipal solid waste, vegetable waste were digested by solid state fermentation at Thermophillic temperature (55°C), and dry matter condition of 20-40Percent in 25 liter anaerobic fermentors.All of the lignocellulosic wastes, except for cayuput oil waste can be digested. The result revealed that the biogas productivity is about 1.66.5 V/V.r.d, methane content about 48.853.3 percent, retention time about 1334 days and efficiency of conversion about 12-61 percent.Solid state fermentation at the above mentioned conditions increases the biogas productivity of about 2-6 times more than that of the conventional method.Solid state fermentation of a mixture of rubber wood saw dust and water hyacinth (ratio 90/10) revealed that bioga» productivity was the lowest, retention time appeared to be the longest and the efficiency of conversion was relatively low (15%),, On the other hand, solid state fermentation of fresh municipal solid waste gave the highest productivity of about 6.5 V/V,r,d, relatively short retention time (16.6 days) and high efficiency of about 57%. Solid state fermentation of mixture of rice straw and water hyacinth (95/5) and also of the municipal solid waste, rubber wood saw dust, bagasse and water hya- cinth (68/ 15/ 1214) gave a high productivity and efficiency.

BIODEGRADASI KOMPONEN KIMIA PADA LIMBAH LIGNOSELU- LOSA OLEH JAMUR PERUSAK KAYU (Biodegradation of wood chemical components in lignocellulosic wastes by whiterot fungi) Sri Komarayati; TjuTju Nurhayati; Gusmailina Gusmailina
Jurnal Penelitian Hasil Hutan Vol 11, No 2 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This paper reports the result of an experiment on the treatment of different forestry wastes, i.e., the sawdust of Hevea brasiliensis Pinus merkusii, Paraserianthes falcataria and the leaves of melaleuca leucodendron with Schizophyllum commune Fr for 7 weeks.The purpose of this study is to assess the effect of white-rot fungi inoculation to the decrease of chemical components like cellulose, lignin and hemicellulose.the results reveal that after treating for 7 weeks, sengon sawdust still has a very .high cellullose content of 22.55% in rubber tree sawdust, lignin and hemicellulose contents are 32.66% and 47.39%, respectively.After decreasing chemical components. Lignocellulose waste could be fermented by solid state fermentation for biogas.

PEMBUATAN BIOETANOL DARI EMPULUR DAN LIMBAH SERAT SAGU DENGAN METODE KIMIAWI DAN ENZIMATIS Ina Winarni; Totok Kartono Waluyo; Sri Komarayati
Jurnal Penelitian Hasil Hutan Vol 37, No 1 (2019): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Sagu (Metroxylon spp.) adalah salah satu tanaman asli Indonesia yang dapat dikonversi menjadi bioetanol sebagai sumber energi baru dan terbarukan. Semua bagian sagu dapat dikonversi, baik pati sagu, batang dan pelepahnya. Penelitian ini bertujuan untuk mengetahui teknik pembuatan etanol dari empulur dan limbah serat sagu dengan menggunakan metode kimia dan enzimatis. Metode pembuatan bioetanol secara kimiawi menggunakan larutan asam klorida (HCl) dengan rasio 3,1; 6,2; 9,3 dan 12,4% konsentrasi substrat 15% (dw) kemudian dipanaskan dengan autoklaf pada suhu 121–127o C selama 5, 10, dan 15 menit; tekanan 1–1,5 bar. Enzim alpha amilase 0,15 mL dan selulase 2%, 3% dan 4% digunakan untuk metode secara enzimatis. Selanjutnya fermentasi dilakukan dengan penambahan urea 0,21 g, NPK 0,12 g dan ragi 0,48 g, dan didiamkan selama 4 hari. Hasil penelitian menunjukkan bahwa bagian empulur menghasilkan kadar gula pereduksi dan kadar etanol lebih tinggi dari limbah serat sagu baik dengan metode kimiawi (446,34 g/L; 51,65%) ataupun enzimatis (15,39 g/L; 16,82%). Penambahan konsentrasi selulase dari 2% hingga 4% tidak dapat meningkatkan rendemen etanol baik yang berbahan baku empulur maupun limbah serat sagu pada proses hidrolisa

PENGARUH PENGGUNAAN CAMPURAN PUPUK ORGANIK DAN ANORGANIK TERHADAP PERTUMBUHAN ANAKAN SENGON (PARASERIANTHES FALCATARIA) R Sudradjat; Sri Komarayati
Jurnal Penelitian Hasil Hutan Vol 10, No 5 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The purpose of this work is to study the effect of organic and anorganic fertilizer mixture to the growth of sengon (Paraserianthes falcataria) seedlings. The properties tested were height increment, dry weight and number of branches.The results show that the application of fertilizer and aerobic compost combination gave a highly significant effect on promoting plant height and dry weight of sengon seedlings as well as the number of branches, while the application of aerobic compost had no effect on branching,Combination of 50% compost and 5 gram chicken manure give the highest plant height of 28. 34 cm, while the lowest is in the treatment of 0.25 gram NPK, that is 1.48 cm. Combination of 40% compost and 5 gram chicken manure give the highest plant dry weight of 0.89 gram, while the lowest is in the NPK treatment.

BEBERAPA SIFAT DAN PEMANFAATAN ARANG DARI SERASAH DAN KULIT KAYU PINUS Sri Komarayati; Dadang Setiawan; Mahpudin Mahpudin
Jurnal Penelitian Hasil Hutan Vol 22, No 1 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This paper deals with a study on the properties, quality and uses of charcoal made from pine litter and bark. The study was intended to see the possibility of using pine litter and bark for compost, mixture of compost charcoal manufacturing, and growing media. The abundance of pine litter and bark left on the forest floor initiated this study. Only some of the pine bark was used for fuel.The results revealed that the charcoal made from pine litter and bark showed the following properties: moisture content at 5.23 - 7.81 percent ; ash content 1.88 - 13. 76 percent ; volatile matter 26.19- 32.60 percent; fixed carbon 53.63 - 71.93 percent, and colorivic value 7192 cal/gr. The macro-nutrient content of pine bark was categorized as moderate for N-total, P205, K20 and water-based pH, as high for C organic and C/N ratio, and as low for CaO and MgO. The quality of compost and compost charcoal made from pine litter and bark met the related standard, among others. Pat 1.12- 1.24 percent; K 1.47- 1,62 percent ; Mg 0.67- 1.05 percent; moisture content 55.81 - 56.21 percent; pH 6.8- 7.2 and C/N ratio 18.89- 20.10.

PEMBUATAN ARANG DAN BRIKET ARANG DARI KA YU MANIS (Cinnamomum burmanii Ness ex. BL) DAN KAYU .SUKUN Sri Komarayati; Gusmailina Gusmailina
Jurnal Penelitian Hasil Hutan Vol 12, No 6 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The aim of this experiment is to find the properties of cassiavera and, breadfruit charcoal and charcoal briquette.The kiln used was the typical size of 200 liter oil drum with specie L design incorporating 12 holes of 13 mm in diameter at different elevations. The kiln also had a short chimney of 30 cm high at the top with 10 cm in diameter. The result showed that charcoal yield were 24.74 % for cassiavera and 23.01 % for breadfruit. Volatile matter was 18.61 %, fixed carbon was 78.31 % and calorific value was 7035.03 cal/g for cassiavera charcoal and volatile matter was 14.27 %, fixed carbon was 73.10 % and calorific value was 6320.12 cal/g for breadfruit charcoalThe moisture content of charcoal briquette ranges from 8.41 to 5. 92 % ash content from 4. 65 to 5. 03 % , volatile matter from 28.87 to 29.48 %, fixed carbon from 65.87 to 66.10 %, density from O.11 to 0.64 g/cm3, compressing strength from 275 to 450 kg/cm2 and the calorific value from 5684. 59 to 6792.58 cal/g.Based on the physical and chemical properties, cassia-vera and breadfruit charcoal briquette can be used as sources of energy.

PEMBUATAN KOMPOS DAN ARANG KOMPOS DARI SERASAH DAN KULIT KAYU TUSAM Sri Komarayati; Gusmailina Gusmailina; Gustan Pari
Jurnal Penelitian Hasil Hutan Vol 20, No 3 (2002): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

this investigation deals with manufacturing of compost and charcoal compost. The raw materials in this manufacture were foliage litters and bark of tusam (Pinus mcrkusii Jungh et de Vries) trees growing in West Java. Particular bio-activators, called as Orgadec and EM;. were used to stimulate the decomposition of those materials. This investigation lasts for about three months. The results revealed that the quality of several of the resulting charcoal composts comply with the related standards, with respect to among others : P = 1.12 - 1.24 percent; K = 1.47-1. 62 percent; Mg= 0.67-1.05 percent; moisture content 55.81-56.21 percent: pH 6.8-7.2; and C/N ratio 18,89-20./0. When compared to other compost, the charcoal compost revealed better qualities, since charcoal was added to it lo improve the properties of soil, i.e. increasing the pH and storing more water.

ANALISIS KIMIA DAN DESTILASI KERING KAYU KARET Sri Komarayati; Dadang Setiawan; Tjutju Nurhayati
Jurnal Penelitian Hasil Hutan Vol 13, No 1 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This paper deals with chemical and charcoal properties of rubberwood. The analysis of chemical propertis comprises of the determination of cellulose, holocellulose, lignin, pentosan, moisture content, ash content, silica content, solubility in cold water, hot water, sodium hydroxide 1 percent and ethanol-benzene (1 : 2). The analysis of charcoal property comprises of charcoal, tar, pyroligneous liquor, calorific value, volatile matter and fixed carbon.The result showed that cellulose content 48.38 % - 50.26 % ; holocellulose 59.68 % -60.17 % ; lignin 31.33 % - 33.49 % ; pentosan 15.98 % - 16.43 % ; moisture content 7.34 -9. 98 % ; ash 0. 64 - 0. 71 % ; silica 0. 57 % - 0. 60 %. Solubility in cold water 2. 39 % - 4.48 %; in hot water 3.33 % - 5.93 % ; in alcohol-benzene (1 : 2) 2.35 % - 2.37 % and in one percent sodium hydroxide 18. 87 % - 20. 72 %.Based on chemical analysis, especially the cellulose and pentosan content, rubberwood is suitable as raw material forpulp and paper, rayon andfiberwood.Chemical analysis of charcoal indicated that charcoal yield variedfrom 28.16 % - 29. 77 % ; tar 6.86 % - 7.4666 % ; pyroligneous liquor 87.50 - 103.23 % ; calorific value 7114.68 cal/gr -7166. 77 cal/gr .fixed carbon 73.82 % - 78.05 % and volatile mailer 20.45 % - 23. 61 %. Proximate analysis of charcoal obtained from this experiments revealed that the quality are suitable for commercial charcoal, metallurgy charcoal and as raw malerial of activated charcoal.

HASIL DESTILASI KERING DAN NILAI KALOR 9 JENIS KA YU DARI NUSA TENGGARA BARAT Sri Komarayati; Tjutju Nurhayati; Dadang Setiawan
Jurnal Penelitian Hasil Hutan Vol 15, No 1 (1997): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Destilasi kering terhadap sembilan jenis kayu telah dilaksanakan dengan mempergunakan retort yang dilengkapi pemanas dari listrik. Retort dihubungkan dengan tiga kondensor dan dua buah labu untuk mengumpulkan distilat atau gas. Kondlsi perlakuan yang diberikan pada penelitian ini antara lain suhu maksimum pengolahun 500ºC dan waktu destilasi 5 jam.Penelitian ini memberikan hasil rendemen arang beragam dari 27,20% - 32,61%, ter 5,37% - 11,74% dun cairan piroligneous 48,00% - 59,60%. Cairan piroligneous dapat digunakan sebagai desinfektan dan untuk menghilangkan bau. Ter yang dihasilkan mempunyai prospek yang baik sebagai bahan pengawet kayu. Nilai kalor kuyu beragam dari 4352,79 - 4625,86 kal/g dan nilai kalor arang beragam dari 6961,66 - 7184,06 kal/g,Berdasarkan hasil analisis, kayu aqn arang dari sembilan jenis kayu yang diteliti merupakan bahan yang sangat baik untuk digunakan sebagai bahan bakar dan karbon aktif.

Co-Authors B De Wilde Djarwanto Djarwanto Djeni Hendra Gusailina Gusailina Gusmailina Gusmailina Gustan Pari Heru Satrio Wibisono Hery Widijanto Ina Winarni Lisna Efiyanti Mahpudin Mahpudin Nur Adi Saputra Poedji Hastoeti R Sudradjat Rena M Siagian Ridwan A Pasaribu S Vanhille Sihati Suprapti Tjutju Nurhayati Tjutju Nurhayati Syahri Totok Kartono Waluyo

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