scholarly journals Karakteristik Briket Biomassa dengan Variasi Geometri dan Jenis Bahan Baku yang Berbeda

2021 ◽  
Vol 9 (2) ◽  
pp. 193
Author(s):  
I Putu Dharma Putra Ritzada ◽  
Ni Luh Yulianti ◽  
Ida Bagus Putu Gunadnya
Keyword(s):  
Rice Husk ◽  
Raw Materials ◽  
Block Design ◽  
Volatile Matter ◽  
Quality Parameters ◽  
Raw Material ◽  
Cylindrical Shape ◽  
Significant Treatment Effect ◽  
Rice Husks ◽  
Significant Treatment

ABSTRAK Penelitian ini bertujuan untuk menganalisa karakteristik briket biomassa dengan variasi geometri dan jenis bahan baku briket biomassa yang berbeda  dan menentukan perlakuan manakah yang menghasilkan briket dengan kualitas yang paling baik. Penelitian ini menggunakan RAK (Rancangan Acak Kelompok) Faktorial menggunakan 2 faktorial dan 3 kali ulangan. Faktor pertama adalah jenis bahan baku (A) yang terdiri dari tiga taraf yaitu bambu tabah (A1), sekam padi (A2) dan campuran bambu tabah sekam padi (A3). Faktor kedua yaitu bentuk geometri briket (B) yang terdiri dari dua taraf yaitu balok (B1) dan silinder (B2). Seluruh perlakuan diulang sebanyak 3 kali ulangan sehingga didapatkan 18  data pengamatan. Data yang diperoleh dianalisis dengan sidik ragam dan apabila terdapat pengaruh perlakuan yang signifikan, maka dilanjutkan dengan uji BNT terhadap rata-rata perlakuan. Hasil penelitian menunjukan bahwa Interaksi antar perlakuan jenis bahan baku dan  bentuk geometri memberikan pengaruh yang signifikan terhadap  parameter mutu briket yang dihasilkan, Perlakuan briket yang dibuat dari sekam padi dengan bentuk silinder (A2B2) merupakan perlakuan yang menghasilkan briket dengan kualitas paling baik dengan nilai kadar air sebesar 2,64% bb, kadar abu sebesar 6,60%,  laju pembakaran sebesar 73,16 (gr/menit) dan volatille matter sebesar 13,86 %. ABSTRACT This study aims to analyze the characteristics of biomass briquettes with different geometry variations and types of biomass briquette raw materials and determine which treatment produces the best quality briquettes.This research uses block design (RAK) using 2 factorials and 3 replications.The first factor is the type of raw material (A) which consists of three levels, namely tabah bamboo (A1), rice husk (A2) and a mixture of tabah bamboo rice husk  (A3). The second factor is the geometric shape of the briquette (B) which consists of two levels, namely beams (B1) and cylinders (B2). All treatments were repeated 3 times in order to obtain 18 observational data. The data obtained were analyzed by means of variance and if there was a significant treatment effect, then it was followed by the BNT test on the average treatment.The results showed that the interaction between treatments. Types of raw materials and geometric shapes had a significant effect on the quality parameters of the resulting briquettes.The treatment of briquettes made from rice husks in a cylindrical shape (A2B2) is a treatment that produces the best quality briquettes with a moisture content value of 2.64% bb.ash content was 6.60%, combustion rate was 73.16 (gr / minute) and volatile matter was 13.86%.

scholarly journals Karakteristik Briket Biomassa dari Variasi Bahan Baku dan Persentase Perekat yang Berbeda

2021 ◽  
Vol 9 (2) ◽  
pp. 202
Author(s):  
Agnesia Arista Wijaya AK ◽  
Ni Luh Yulianti ◽  
Ida Bagus Putu Gunadnya
Keyword(s):  
Moisture Content ◽  
Combustion Rate ◽  
Rice Husk ◽  
Block Design ◽  
Ash Content ◽  
Volatile Substance ◽  
Raw Material ◽  
Significant Treatment ◽  
Multiple Test

ABSTRAK Penelitian ini bertujuan untuk menganalisa karakteristik  dan pengaruh jenis bahan baku dan persentase perekat yang berbeda terhadap mutu briket biomassa yang dihasilkan dan menentukan perlakuan manakah yang memberikan hasil terbaik terhadap karakteristik briket yang dihasilkan. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktorial  dengan menggunakan 2 faktor dan 3 kali ulangan. Faktor pertama (A) adalah jenis bahan baku yang terdiri dari 3 taraf yaitu bambu tabah  ( A1), sekam padi (A2) dan campuran bambu tabah dan sekam padi (A3). Faktor kedua (B)  adalah persentase  perekat yang terdiri dari 3 taraf yatu  konsentrasi 10%, ( B1) 15% (B2) dan  20%(B3) . Parameter penelitian yang diamati adalah kadar air, kadar abu, kadar zat menguap dan laju pembakaran. Seluruh perlakuan diulang sebanyak 3 kali ulangan sehingga didapatkan 27 unit percobaan. Data yang diperoleh dianalisis dengan sidik ragam dan apabila terdapat pengaruh perlakuan yang signifikan, maka dilanjutkan dengan uji Duncan Multiple Test (DMRT). Berdasarakan hasil penelitian diketahui bahwa, interaksi  perlakuan memberikan pengaruh yang signifikan terhadap parameter kadar air, kadar abu, kadar zat menguap dan laju pembakaran. Selanjutnya  Kadar air yang didapat berkisar antar  2,30% bb - 4,78%,bb  kadar abu 5,88% - 34,85%, kadar zat menguap 31,30% - 51,59% dan laju pembakaran 73,20 gr/menit – 106,00 gr/menit. Kualitas briket yang paling baik  diperoleh pada perlakuan A2B3 (sekam 80 gram perekat 20 gram) dimana kadar air yang dihasilkan sebesar 2,30%bb, kadar abu 32,29%, kadar zat menguap 32,01% dan laju pembakarannya selama 92,60 gr/menit. ABSTRACT This study aims to analyze the characteristics and effects of different types of raw materials and adhesive percentages on the quality of the briquettes of the biomass produced and to determine which treatment gives the best results for the characteristics of the resulting briquettes. This study used a factorial randomized block design (RBD) using 2 factors and 3 replications. The first factor (A) is the type of raw material which consists of 3 levels, namely tabah bamboo (A1), rice husk (A2) and a mixture of tabah bamboo and rice husk (A3). The second factor (B) is the adhesive percentage consisting of 3 levels, namely 10% concentration, (B1) 15% (B2) and 20% (B3). The research parameters observed were moisture content, ash content, volatile substance content and combustion rate. All treatments were repeated 3 times in order to obtain 27 experimental units. The data obtained were analyzed using variance and if there was a significant treatment effect, it was followed by the Duncan Multiple Test (DMRT). Based on the results of the study, it is known that the treatment interaction has a significant effect on the parameters of moisture content, ash content, volatile substance content and combustion rate, then the moisture content obtained ranges from 2.30% bb - 4.78%, bb ash content 5, 88% - 34.85%, the volatile substance content was 31.30% - 51.59% and the combustion rate was 73.20 grams/minutes - 106.00 grams/minutes. The best quality of briquettes was obtained in A2B3 treatment (80 grams of rice husk 20 grams of adhesive) where the water content produced was 2.30%, the ash content was 32.29%, the vaporizing substance content was 32.01% and the burning rate was 92.60 grams. /minute.

scholarly journals To Biomassa Tempurung Buah nyamplung (Callophyllum spp) untuk Pembuatan Briket Arang sebagai Bahan Bakar Alternatif

1970 ◽  
Vol 1 (1) ◽  
pp. 8-13
Author(s):  
Fahrizal Hazra ◽  
Novita Sari
Keyword(s):  
Moisture Content ◽  
Alternative Energy ◽  
Raw Materials ◽  
Volatile Matter ◽  
Quality Parameters ◽  
Matter Content ◽  
Ash Content ◽  
Raw Material ◽  
Fixed Carbon ◽  
Burning Charcoal

Nyamplung shell is a biomass whose existence has not been optimally utilized. Biomass is a solid waste that can be used again as a source of fuel. Favorable characteristics of the biomass is an energy source that can be utilized in a sustainable manner because it is renewable. Biomass of Nyamplung shell can be processed become a form of solid fuel with a same specific dimension, it is resulting from compression of bulk materials, powders, and the relatively small size commonly referred to as charcoal briquettes.  The aim of this research is to test the feasibility of nyamplung shell as a raw material for making briquettes on the households by conducting analysis of quality parameters briquette specimens including physical properties (water content, calor value, and density), briquette durability (persistence press), chemical (ash content, fixed carbon and volatile matter content) and the rate of burning charcoal briquette.  The treatment in this aim is a mixture composition of raw materials (charcoal of Nyamplung shell) who were given the same amount of adhesive and compressed by compressing hydraulic briquette. The results showed that, charcoal briquettes made from the Calophyllum shell can be used as alternative energy, with a characteristic range of values from 3,39-3,83% moisture content, calor value ranges from 3.646,14-5.431,35 calories / gram, the range of density values 0,663-0,721 gram/cm3, the range of persistence press value 1,98-5,39 kg/cm2, the range of ash content value 19,89-24,51%, the range of fixed carbon value 33,09-40,86%, the range of volatile matter value 35,03-38,57%, and the range of rate of burning from 0,0574-0,0898 grams/second. The low value of moisture content can lead to higher heating value of charcoal briquettes. High/low levels of volatile could affect fast/slow rate of burning charcoal briquettes. Key words : nyamplung shell, biomass, charcoal briquette

scholarly journals Kajian Kualitas Briket Biomassa dari Sekam Padi dan Tempurung Kelapa

2016 ◽  
Vol 2 (2) ◽  
pp. 136-142
Author(s):  
Idzni Qistina ◽  
Dede Sukandar ◽  
Trilaksono Trilaksono
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Raw Materials ◽  
Calorific Value ◽  
Volatile Matter ◽  
Strength Test ◽  
Raw Material ◽  
Coconut Shell ◽  
Fixed Carbon ◽  
Compressive Strength Test

Abstrak Biomassa seperti sekam padi dan tempurung kelapa dapat menjadi sumber bahan baku briket sebagai salah satu energi alternatif pengganti bahan bakar fosil (minyak bumi).Penelitian ini bertujuan untuk mengkaji kualitas briket sekam padi dan tempurung kelapa melalui proses semi-karbonisasi pada temperatur antara 50-125 0C dengan durasi waktu proses 50-120 menit. Proses pembuatan briket meliputiproses semi-karbonisasi, pencampuran biomassa dengan perekat, pencetakan, pengeringan, dan uji kualitas briket. Pengujian kualitas briket meliputi analisis briket yaitu nilai kalor, kadar air, fixed carbon, volatile matter, abu, dan analisis ultimat. Disamping itu juga dilakukan uji kuat tekan, pengukuran emisi gas, dan uji termal briket yang dihasilkan.Hasilnya menunjukkan penurunan kadar air bahan baku briket sekam padi dan tempurung kelapa membutuhkan energi masing-masing 8.54% dan 4.97% dari proses karbonisasi murni yang menghasilkan semi arang. Nilai kalor briket sekam padi maupun tempurung kelapa mengalami penurunan masing-masing 9.72% dan 7.21% jika dibandingkan dengan bahan bakunya.Gas emisi dari briket sekam padi dan tempurung kelapa yaitu gas NOx, SOx, CO, dan hidrokarbon (HC) masih di bawah baku mutu yang dipersyaratkan. Hasil uji termal briket menunjukkan efisiensi termal briket sekam lebih baik dibandingkan briket tempurung kelapa dengan nilai efisiensi masing-masing sebesar 31.13% dan 22.28%. Kata kunci: Briket sekam padi, briket tempurung kelapa, semi karbonisasi, emisi gas, efisiensi termal. Abstract   Biomass energy, among others, rice husk and coconut shell can be an alternative energy source to replace fossil fuels (petroleum). This study aims to assess the quality briquettes rice husk and coconut shell with raw materials through semi-carbonization process at a temperature between 50-125 0C with a duration of 50-120 minutes of processing time. Briquetting process meliputu semi-carbonization, refining raw materials and sieving made passes restrained 30 mesh and 30 detained 50 mesh. Then do the mixing biomass with adhesive, printed, dried and tested briquette quality test. Briquette quality testing consists of the analysis of the characteristics of briquettes are calorific value, moisture content, fixed carbon, volatile matter, ash, and the ultimate analysis. Besides, it also conducted compressive strength test, the measurement of gas emission, and thermal test briquettes were produced. The results show a decrease in raw material briquettes moisture content of rice husk and coconut shell on semi karbonization process requiring respectively 8.54% and 4.97% of the energy of pure carbonization process which produces semi charcoal. Calorific value briquettes rice husk and coconut shell fell respectively 9.72% and 7.21% when compared to the raw material. The quality of biomass briquettes is based on the results of the analysis of the characteristics and compressive strength test briquettes showed that coconut shell briquettes better quality than the rice husk briquettes. Briquettes gas emissions from rice husks and coconut shells are gas NOx, SOx, CO and hydrocarbons (HC) is still below the quality standards required. The test results demonstrate the thermal efficiency of thermal briquettes rice husk briquettes for 31.13% and better than coconut shell briquettes by 22.28%. Keywords: Briquette rice husk, coconut shell briquettes, semi-carbonization, gases,thermal efficiency DOI: http://dx.doi.org/10.15408/jkv.v0i0.4054

scholarly journals KUALITAS PAPAN PARTIKEL BERDASARKAN KOMPOSISI SEKAM PADI DAN KAYU SENGON DENGAN VARIASI KADAR PEREKAT

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Dendi Prayoga ◽  
. Dirhamsyah ◽  
. Nurhaida
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Rice Husk ◽  
Raw Materials ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Solid Content ◽  
Particle Board ◽  
Rice Husks ◽  
Wood Processing

This research aimed to examine the physical and mechanical properties of particle boards based on the composition of raw materials and adhesive content and know the treatment of the composition of raw materials and the best adhesive content and meet the standard JIS A 5908-2003. The research was conducted at Wood Workshop Laboratory, Wood Processing Laboratory Faculty of Forestry,Tanjungpura University and Laboratory of PT. Duta Pertiwi Nusantara Pontianak. The adhesive used is Urea Formaldehyde with 52% Solid Content. Comparison of the composition of rice husks and sengon varies namely rice husk 50%: sengon 50%, rice husk 60%: sengon 40% and rice husk 70%: sengon 30%  and variations in the levels of UF adhesives, namely 14% and 16%, with target density 0,7 gr/cm3. The particleboard was 30 cm x 30 cm x 1 cm Pressing at temperature 140oC for 8 minutes, with  pressure of 25 kg/cm2. The research results of the study of density and moisture content meet the standards JIS A 5908-2003. The best particle values of rice husk and sengon  with composition a ratio of  rice husk 50%: sengon 50% , 16% adhesive content  16%, with density value of  0,7072 gr/cm3, moisture content 9,1949 %, thick development 12,3210 %, water absorption 68,8270 %, MOE 12110,7273 kg/cm2, MOR 161,0025 kg/cm2, firmness sticky 1,9320 kg/cm2, screw holding strength 62,3124 kg.Keywords : adhesive, composition, particle board, rice husk, sengon

scholarly journals Integrated use of technogenic raw materials in cement technology

2021 ◽  
pp. 19-24
Author(s):  
L.P. Chernyak ◽  
L.I. Melnyk ◽  
N.O. Dorogan ◽  
I.A. Goloukh
Keyword(s):  
Standardized Testing ◽  
Rice Husk ◽  
Power Plants ◽  
Raw Materials ◽  
Thermal Power ◽  
Raw Material ◽  
Cement Clinker ◽  
Material Base ◽  
Chemical Research ◽  
Technogenic Raw Materials

This work used a combination of modern physico-chemical research methods with standardized testing of technological and operational properties of raw materials, clinker, cement and compositions with its application. Results over of research of the silicate systems with rice husk and ash-fly as technogenic raw material for making of cement clinker are driven. The features of the chemical-mineralogical composition, phase transformations during burning and astringent properties of material at the use of 42,5-50,5 % industry wastes in composition initial raw material mixtures are shown. The object of the study were raw material mixtures for the production of Portland cement clinker based on the systems of chalk - clay - man-made raw materials and chalk - man-made raw materials. The possibility of replacing exhaustible and non-renewable natural raw materials with a complex of multi-tonnage wastes of agro-industry and heat energy, which meets the objectives of expanding the raw material base of cement production, resource conservation and environmental protection. Peculiarities of phase formation during firing of silicate systems of chalk-polymineral clay and chalk-technogenic raw materials taking into account changes in the quantitative ratio of components, in particular rice husk and ash-removal of thermal power plants are noted.

scholarly journals Utilization of Rice Husk Waste for Paper Raw Materials as An Arabic Calligraphy Media

2019 ◽  
Vol 3 (1) ◽  
pp. 43-54
Author(s):  
Ahmad Zarnuji ◽  
Hanif Amrulloh ◽  
Isnaini Nur Azizah
Keyword(s):  
Rice Husk ◽  
Raw Materials ◽  
Business Community ◽  
Raw Material ◽  
Community Based ◽  
Artistic Value ◽  
Marketing Process ◽  
Asset Based Community Development ◽  
Arabic Calligraphy

Rice husk is an organic waste found in Indonesia as a raw material for paper products. The society has not yet realized that the material could also be a medium of Arabic calligraphy. This research-based community service action aims to introduce the benefits of rice husk as a raw material for making paper. To practice the production of paper from rice husk as the basis for making Arabic calligraphy art, so it is needed to make a business community of paper production from rice husk based on Arabic calligraphy. By using the Asset-Based Community Development method, the community mentoring process is carried out by helping the business community of rice husk paper based on Arabic calligraphy during the production to the marketing process. To control the quality of the art of Arabic calligraphy, the EL-KA Lampung calligraphy community was involved. The result shows that the Arabic calligraphy created by the assisted community has high artistic value with different textures from rice husk paper, then it was created a rice husk paper business community based on Arabic calligraphy.

scholarly journals The Effect of NaOH Concentration and microwave exposure time to the content of cellulose, hemicellulose and lignin of Corn Cob

2019 ◽  
Vol 1 (1) ◽  
pp. 16
Author(s):  
Sri Winarsih
Keyword(s):  
Prolonged Exposure ◽  
Raw Materials ◽  
Block Design ◽  
Food Prices ◽  
Raw Material ◽  
Heat Radiation ◽  
Cellulose Content ◽  
Corn Cob ◽  
Microwave Exposure ◽  
Randomized Block Design

Abstract.Currently ethanol produced from molasses, cassava and maize, thereby competing with the need for food, animals feed and other industrial raw materials, so that the supply of raw materials is not continuity. If this continues, it will certainly have an impact on food prices spike, it will create new problems on the economy of the community, and one of an alternative raw material for bioethanol production is cellulose biomass.To convert biomass into bioethanol through several stages, including pretreatment, hydrolysis and fermentation. The content of lignin in biomass will disturb the enzymatic hydrolysis process, so it is necessary to encourage the delignification in the pretreatment stage. Microwave - alkali pretreatment can reduce more lignin and hemicellulose in rice straw, so it needs to be an effort to change the composition of lignocellulose and improve the hydrolysis of corn cob is fermented to become ethanol. Pretreatment of corn cobs research was done using randomized block design arranged in factorial and repeated 2 times. The first factor is the concentration of NaOH for 0,5 N, 1 N and 1,5N. The second factor is the time of exposure to microwave heat radiation for 10, 20 and 30 minutes. The results showed that cellulose content increases with prolonged exposure concentrations of NaOH and microwave, as well as to the content of hemicellulose and lignin decreased along with the increase of exposure duration of Microwave and the increase of NaOH concentrations.

Effect of Mid-Rotation Fertilization on Stiffness and Strength of Loblolly Pine Wood

IAWA Journal ◽  
2013 ◽  
Vol 34 (2) ◽  
pp. 127-134 ◽  
Author(s):  
Finto Antony ◽  
Laurence R. Schimleck ◽  
Richard F. Daniels ◽  
Alexander Clark
Keyword(s):  
Loblolly Pine ◽  
Treatment Effect ◽  
Nitrogen Fertilizer ◽  
Modulus Of Elasticity ◽  
Block Design ◽  
Modulus Of Rupture ◽  
Significant Treatment Effect ◽  
Significant Treatment ◽  
Randomized Complete Block Design ◽  
Four Levels

Trees sampled from a loblolly pine mid-rotation fertilization trial were used in this study. The study was laid out in a randomized complete block design with four levels of nitrogen fertilizer as treatments: control (000N), 112 (112N), 224 (224N), and 336 (336N) kg/ha of nitrogen, with each treatment replicated in 4 blocks. Two trees were destructively sampled from each plot giving a total of 32 trees. Bolts 0.6 m in length were collected from each tree (3 bolts per tree); with the midpoint of each bolt at heights of 2.4, 7.3 and 12.2 m from the base of the tree (each bolt represented the midpoint of standard 4.9 m saw logs). Static bending samples with dimensions 25 by 25 by 406 mm (radial, tangential and longitudinal dimensions respectively) were cut from the bolts that included the 25 mm of wood produced immediately following fertilization. Data on modulus of elasticity (MOE, stiffness) and modulus of rupture (MOR, strength) were collected from clear static bending samples. Based on the analysis of variance, no significant treatment effect was observed on MOE and MOR. However, MOE and MOR decreased in wood produced immediately after fertilization for trees which received the highest level of fertilization (336N). A decreasing trend in MOE and MOR with height was also present.

Biomass Pellets from Oil Palm Empty Fruit Bunches (OP-EFB)

2019 ◽  
Vol 2 (1) ◽  
pp. 65-68
Author(s):  
Rahman Farhan Aditya
Keyword(s):  
Oil Palm ◽  
Energy Demand ◽  
Raw Materials ◽  
Calorific Value ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Raw Material ◽  
Empty Fruit Bunches ◽  
Binder Ratio ◽  
Binder Concentration

Oil Palm growths in Indonesia are getting higher every year. Oil palm plantationproduced various waste, including oil palm empty fruit bunches (OP-EFB). 95 % Indonesia energy demand still provided by the fossil fuel and only 5 % provided by renewable energy, which provide opportunity of OP-EFB biomass pellets to be utilized as alternative resource. The research of biomass still low, especially research of OP-EFB biomass pellets. Therefore, the research objectives were to determine the production process of OP-EFB and to define the most effective binder and binder ratio for the biomass pellets. This research experiments  consist of shredding, chopping, drying, grinding, and sieving as raw material pretreatment. Also, varying the binder and binder concentration of the mixture between raw materials was the part of this thesis research. The binders used in this thesis research are PVAC paste and tapioca based paste with 4 variations of concentration. The analyses of the biomass pellets characteristic are density,compressive strength, proximate analysis (moisture, ash, volatile matter, and fixed carbon), calorific value, combustion rate, and gas chromatographic & mass spectroscopy (GCMS). The result shows that OP-EFB biomass pellets are qualified to be considered as biomass pellets. The most effective OP-EFB biomass pellets is biomass pellets with 10% tapioca binder concentration.

scholarly journals Pertumbuhan miselia jamur merang (Volvariella volvaceae) lokasi pacing dengan jenis media dan konsentrasi biakan murni secara in vitro

Jurnal Agro ◽  
10.15575/2426 ◽  
2018 ◽  
Vol 5 (2) ◽  
pp. 104-126
Author(s):  
Ani Lestari ◽  
Elia Azizah ◽  
Kuswarini Sulandjari ◽  
Abdulloh Yasin
Keyword(s):  
Rice Husk ◽  
Pure Culture ◽  
Culture Media ◽  
Block Design ◽  
Rice Husks ◽  
Colony Diameter ◽  
Randomized Block Design ◽  
Experiment Method ◽  
Straw Mushroom

Jamur merang merupakan salah satu jamur konsumsi yang sangat diminati, sehingga kebutuhan jamur merang semakin meningkat. Namun untuk memenuhi kebutuhan tersebut banyak ditemukan kendala, salah satunya dalam penyediaan biakan murni terkait jenis dan konsentrasi media biakan murni. Penelitian ini bertujuan untuk mendapatkan jenis dan konsentrasi media biakan murni yang memberikan pertumbuhan koloni miselia jamur merang tertinggi. Penelitian dilaksanakan di Laboratorium Bioteknologi Tanaman Fakultas Pertanian UNSIKA dari Maret sampai Agustus 2017, menggunakan rancangan acak kelompok faktorial dengan 3 ulangan. Faktor pertama : jenis media dengan 4 taraf  m1 = PDA, m2 = arang sekam padi, m3 = jerami, m4 = campuran arang sekam padi dan jerami. Faktor kedua : konsentrasi media biakan murni dengan 3 taraf : k1 = 200 g l-1, k2 = 250 g l-1, k3 = 300 g l-1. Hasil penelitian ini menunjukkan bahwa, media arang sekam padi dan PDA dengan konsentrasi media biakan murni 200 g l-1 memberikan pengaruh yang sama baiknya bagi pertumbuhan miselium jamur merang dengan diameter sebesar 8 cm.  Media arang sekam padi dapat dijadikan sebagai alternatif pengganti media PDA. Straw mushroom is one of the most popular mushroom. So needs of straw mushroom more  increasing. However, to meet those needs had been founded obstscles, one of them is type and consentration of straw mushroom pure culture media. The aims of this research was to find out the type and consentration of pure culture media which could give the best growth of straw mushroom mycelia. The research was conducted in laboratory of plant bioctehnology, faculty of Agriculture, University of Singaperbangsa Karawang from March until August 2017. The experiment method used the factorial randomized block design with 3 replications. The first factor was the type of media, consisted of 4 levels m1 = Potato dextrose agar (PDA), m2 = rice husks m3= Rice Straw m4 = Mixture of rice husk and straw. The second factor was the concentration of media, consisted of 3 levels k1 = 200 g l-1, k2 = 250 g l-1, k3 = 300 g l-1. The results of the research showed that rice husk media and PDA with consentration’s 200 g l-1 gave good affect to mycelia colony diameter of straw mushroom by 8 cm. The rice huskwas an alternative as pure culture media for straw mushroom, substitute PDA.

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