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eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia
Published by Universitas Tribhuwana Tunggadewi
ISSN : -     EISSN : 2548771X     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Energy Engineering Industrial & Manufacturing Engineering
Focus and Scope of this journal are : Chemical Engineering including : bioenergy processing, environmental engineering, natural resource management, Heat and Mass Transfer, Chemical Reaction, Analytical Chemistry, Biochemistry, Designing tools and chemical processes, Chemical industry process, Computing and modeling (simulation) process, Particle and nano technology, membrane technology, esessential oil technology, and phytopharmaca, etc. Civil Engineering including : technology of construction materials, transportation system, environmental layout, concrete and wood structures, steel construction, bridge and dam construction, management of water resources and Hydrology, earthquake engineering, sanitation systems and urban drainage. eUREKA is published twice a year on Juni and December by Engineering Faculty of Universitas Tribhuwana Tunggadewi Malang
Arjuna Subject : -
Articles 160 Documents
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STUDI KELAYAKAN MATERIAL GUNUNG DALAM PENGGUNAANNYA SEBAGAI SALAH SATU MATERIAL BETON (STUDI KASUS MATERIAL PASIR WATUMEZE DAN AGREGAT BATU PECAH BOBA-RADHA KABUPATEN NGADA) Rema, Petrus Damianus; Rasidi, Nawir
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Agregat Watumeze dan Boba-radha menjadi komoditas penting di kabupaten Ngada dan sekitarnya, yaitu sebagai bahan bangunan. agregat harus memenuhi berbagai syarat teknis, Namun sebagai bahan alam kualitas agregat Watumeze dan Boba-radha jelas banyak dipengaruhi oleh keadaan tempat dan lingkungan pengambilannya. Penelitian dilakukan dilaboratorium dengan kubus beton 15 x 15 cm untuk mengetahui kuat tekan beton dan selinder dengan ukuran 15 x 30 cm untuk kuat tarik beton.dimana untuk kuat tekan beton dibuat 9 buah benda uji dan kuat tarik beton 5 buah benda uji dengan Perbandingan campuran 1semen : 2,80 Kerikil : 1,87 Pasir. Uji pendahuluan terhadap aggregat dari Watumeze dan Boba-radha menunjukan bahwa kadar air agregat kasar adalah 0.60%, kadar air agregat halus 3.58%,berat jenis agregat kasar 2.62 dan berat jenis untuk agregat halus 2.69, penyerapan untuk agregat kasar sebesar 2.78 % dan agregat halus adalah 1.18%. Kuat tekan beton pada umur 3 hari dikonversi ke 28 hari sebesar 331.10 Kg/cm2,dan kuat tarik beton 26,78 Kg/cm2.Kualitas material Watumeze dan Boba- Radha dipergunakan sebagai beton kelas 1 (Bo dan B1), tapi untuk beton kelas 2 pun masih dapat digunakan walaupun dilihat dari syarat abrasi hal itu tidak dibenarkan, karena telah melampaui syarat SNI sebesar 40%. Kata Kunci : kualiats agregat, kuat tekan beton,kuat tarik beton, Watumeze dan Boba-radha ABSTRACT Agaregat Watumeze and Boba-radha become an importsnt commodity in Ngada and surrounding and counties, is a building material. Agaregat should meet various technical requremnts. But as the quality of the natural materil obviously heavily infulenced agaregat Watumeze and Boba-radha clear condition environment where they were takken. Research to do in laboratory with conrete to know pressure strong of cube and chylinder with size for puul strong of cube 15 x 30 cm, where forb concrete compressive strength test specimens made of 9 pieces and 5 pieces of concrete tensile specimens with mixure ratio 1 cement: 2,80 gravel: 1,87 sand. The preliminary test of the mountain Watumeze and Boba-radha agaregat shiwed that themoisture content was 0, 60%, specific gravity 2,47 and density of coarse agaregat smooth 2, 53, obsorption for rough agaregat for 2, 32% and agaregat smooth 21, 27%. Compressive strength of concrete at the age of 3 days converted to 28 days of 331,10 kg/cm2, Watumeze and Boba-radha quality material is used as a conncret clss 1, but for concreate grade 2 can still be used even if seen from abrasion conditions because that it exceeds the SNI as big as 40%.
ANALISA TINGKAT PELAYANAN PADA RUAS JALAN SLAMET SUPRIYADI KECAMATAN SUKUN KOTA MALANG Baba, Selestinus; Pandulu, Galih Damar
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Kota malang merupakan salah satu kota besar di jawa timur dengan potensi wisata dan perekonomiannya yang semakin berkembang. Adanya aktivitas perkotaan dan aktivitas lainya seperti aktivitas Mall, Pasar, Taman, Kampus, Daerah Wisata, merupakan faktor yang menjadikan jalan ini memiliki aktivitas padat yang mengakibatkan masalah-masalah transpotasi salah satunya kemacetan yang mengakibatkan kapasitas jalan semakin menurun, dalam penelitian ini digunakan metode pengambilan data dengan manual Mothod Counter pada ruas jalan Slamet Supriyadi Kecamatan Sukun Kota Malang dengan tujuan untuk menghitung nilai volume lalu lintas, kecepatan, kapasitas dan tingkat pelayan jalan yaitu dengan melakukan survey selama 10 hari ( dimulai dari jam 6.00 WIB ? 21.00 WIB ) dan dari hasil survey didapatkan data volume lalu lintas, kecepatan kendaraan dan data geometrik jalan. Dalam pengolahan data dilakukan dengan metode Manual Kapasitas Jalan Indonesia (MKJI) 1997 dimana derajat kejenuhan (DS) sebagai indikator perilaku lalu-lintas pada ruas jalan Slamet Supriyadi Kecamatan Sukun Kota Malang. Berdasarkan hasil analisa, volume jam puncak pada ruas jalan Slamet Supriyadi adalah 2934.36 smp/jam, tingkat pelayanan jalan (LOS) adalah E. Kata Kunci : Jalan Slamet Supriyadi, Analisa MKJI 1997, Tingkat Pelayanan Jalan E. ABSTRACT Malang is one of the major cities in East Java with tourism potential and a growing economy. The existence of the urban activity and other activity such as malls, markets, parks, Campuses, area attractions, a factor which makes this road has a solid activity resulting in problems provided one of the bottlenecks result in road capacity declined, in this study used methods of data capture with manual Mothod counters, in the Subdistrict Slamet Alwi road of breadfruit, Malang for the purpose of calculating the volume of traffic, speed, capacity and service levels the way i.e. by doing surveys for 10 days (starting from the hours of 6.00 am EST ? 21.00 GMT ) and the results of the survey obtained data traffic volume, vehicle speed and roadway geometric data. In the processing of data is carried out by Manual methods of road capacity of Indonesia (MKJI) 1997 whereby the degree of saturation (DS) as an indicator of traffic behaviour on the roads of breadfruit Subdistrict Slamet Alwi and Malang. Based on the results of the analysis, the volume of peak hours on roads Slamet Alwi is a 2934.36 junior/hour, the road level of service (LOS) is E.
PRA RANCANG BANGUN PABRIK BIODIESEL DARI BIJI ALPUKAT MENGGUNAKAN PROSES TRANSESTERIFIKASI DENGAN ALAT UTAMA MIXER KAPASITAS 112.810 TON/TAHUN Juhari, Juhari; Iskandar, Taufik
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Biodiesel adalah salah satu bahan bakar alternatif yang ramah lingkungan, tidak mempunyai efek terhadap kesehatan yang dapat dipakai sebagai bahan bakar kendaraan bermotor yang dapat menurunkan emisi bila dibandingkan dengan minyak diesel. Biji alpukat terdiri dari 65% daging buah (mesokarp), 20% biji (endocarp), dan 15% kulit buah (perikarp). Biji alpukat mengandung 15-20 % minyak. Biji alpukat mengandung minyak yang hampir sama dengan kedelai sehingga biji alpukat dapat dijadikan sebagai sumber minyak nabati. Tujuan didirikan pabrik biodiesel untuk mengetahui kelayakan untuk didirikannya rancangan bangun pabrik biodesel. Kapasitas produksi yang dihitung berdasarkan pada data produksi biji alpukat tahun 2010-2013 dan perkiraan produksi tahun 2019 adalah 112.810 ton/tahun dengan menggunakan alat utama Mixer dengan proses tranesterikfikasi. Lokasi bangun pabrik direncanakan di wilayah Lumajang Jawa Timur, Selain di pasarkan sendiri, juga akan bekerja sama dengan PT. Pertamina. Berdasarkan analisa ekonomi pra rancang bangun pabrik biodesel diketahui Total Capital Investment (TCI): Rp. 13.406.244.594,- Return Of Investment (ROI) sebelum dan sesudah pajak 90,8% dan 81,80%, Pay Out Time (POT) 1,2 tahun; Break Even Point (BEP): 36,1%; Tingkat Pengembalian Internal (IRR): 18,3 % Kata-kata kunci : biodesel, biji alpukat, mixer ABSTRACT Biodiesel is one of the most environmentally friendly alternative fuels, has no health effects that can be used as motor vehicle fuels that can reduce emissions when compared to diesel oil. Avocado seeds consist of 65% meat flesh (mesocarp), 20% seed (endocarp), and 15% fruit peel (pericarp). Avocado seeds contain 15-20% oil. Avocado seeds contain almost the same oil as soybeans so that avocado seeds can be used as a source of vegetable oil. The objective of the biodiesel plant is established to determine the feasibility of establishing a biodesel plant construction plan. Production capacity calculated based on avocado seed production data in 2010-2013 and 2019 production forecast is 112.810 ton / year using Mixer main tool with tranestericfication process. The location of factory building is planned in East Java Lumajang area, In addition to its own market, will also cooperate with PT. Pertamina. Based on the economic analysis pre-design of biodiesel plant known Total Capital Investment (TCI): Rp. 13.406.244.594, - Return Of Investment (ROI) before and after tax 90.8% and 81.80%, Pay Out Time (POT) 1.2 years; Break Even Point (BEP): 36.1%; Internal Return Rate (IRR): 18.3%
ANALISA TINGKAT PELAYANAN PADA RUAS JALAN KALIPARE-DONOMULYO KECAMATAN KALIPARE KABUPATEN MALANG Bili, Djener Kristian; Suhudi, Suhudi
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Pada ruas Jalan kalipare terdapat banyak hambatan samping, saluran yang kurang berfungsi dengan baik, hal ini dapat mengakibatkan kemacetan atau memperlamat aktifitas masyarakat yang satu dengan yang lain, disisi lain jalan kalipare merupakan jalan menuju daerah wisata Kabupaten Blitar dan Ngawi dan merupaan daerah pertanian dilihat dari banyaknya tanaman tebuh, ubi dan lain-lain. Tujuan penelitian ini Untuk mengetahui karakteristik, tingkat pelayanan lalu lintas dan dimensi saluran pada ruas Jalan Kalipare- Donomulyo Kabupaten Malang. Survey menggunakan metode pengambilan Data dengan Berdasarkan Metode Manual kapasitas jalan 1987, Berdasarkan Buku drainase perkotaan (suripin 2004). Hasil analisa dilapangan pada Ruas jalan Kalipare-Donomulyo Kecamatan Kalipare, Kabupaten Malang memiliki karakteristik volume jam puncak Lalu Lintas Harian Rata?rata (LHR) pada minggu pertama tanggal 28 mei 2018 sampai 3 juni 2018 lebih kecil dari minggu kedua tanggal 4 juni 2018 sampai 10 juni 2018 dengan jumlah minggu pertama 30394,2 smp/jam dan minggu kedua 32187,2 smp/jam. Berdasarkan hasil survei dan analisa dilapangan untuk tingkat pelayanan pada Ruas Jalan Kalipare-Donomulyo Kecamatan Kalipare Kabupaten Malang pada jam puncak adalah dengan tingakat pelayanan F >1. Dimana dari hasil perhitungan Ds = Q/C didapat Q(Volume Lalu Lintas dalam Smp/jam) = 2450,9 smp/jam, dan Kapasitas (C dalam smp/jam) = 1561,1. Berdasarkan hasil analisa perhitungan saluran debit air (Q) = 0,171 m3/dtk maka dapat dapat diketahui dimensi saluran yaitu dengan tinggi saluran 0,28 m dan lebar saluran 0,55 m. Kata Kunci : Analisa, Tingkat Pelayan, Drainase. Abstract On the road of kalipare there are many obstacles aside, the less work properly, this can lead to congestion or memperlamat the society activities with one another, on the other hand the road kalipare is the way to the tourist district of Blitar Regency and Wonogiri and regional health workforce form the farm as seen from the large number of plant tebuh, sweet and others. The purpose of this research is to know the characteristics, level of service and traffic channel dimensions on Kalipare roads-Donomulyo Malang. Survey method using Data capture with Manual Methods based on the capacity of the road 1987, based on the book the urban drainage (suripin 2004). The results of the analysis of the situation on the roads Kalipare-Kalipare Sub Donomulyo, Malang has a characteristic peak hour volume of daily traffic Averages ? average (LHR) in the first week of May 28, 2018 to 3 June 2018 is smaller than the second week 4 June to 10 June 2018 2018 by the number of weeks the first junior high school 30394.2/hour and the second week of 32187.2 junior high school. Based on the survey results and analysis of the situation to the level of service on the Roads Kalipare-Donomulyo Subdistrict Kalipare Malang at peak hours is by tingakat Ministry F > 1. Where the calculation results of Ds = Q/C obtained Q (Traffic Volume in the junior high/hour) = 2450.9/junior, and capacity (C in junior/hour) = 1561.1. Based on the results of the analysis of the calculation of water discharge channel (Q) = 0.171 m3/sec then it can be known i.e. channels dimensions with a height of 0.28 m and width channels channel 0.55 m.
STUDI PERBANDINGAN BIAYA BAHAN PADA BEKISTING KAYU DAN BONDEK DI GEDUNG FAKULTAS ILMU PENDIDIKAN UNIVERSITAS TRIBHUWANA TUNGGADEWI MALANG Pakereng, Roly; Wijaya, Handika Setya
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

At this time technological advances the world construction intensified. In improving the quality of the work of a construction, numerous attempts have been made to get the work more effective, efficient and quality values fixed in the preserve. So also with the method of implementation of the floor plate using wood formwork in compare with bondek on the work floor plate building of the Faculty of education at the University of Tribhuwana Tunggadewi Malang, in the work floor plates using plate further simplify and accelerate bondek a floor plate work on the building. In this research aims to know the difference between the cost of the execution of the work plate floor using wooden formwork bondek compared to on the job building of the Faculty of education at the University of Tribhuwana Tunggadewi Malang. In the collection of data, the researchers used a method of observation and the method of literature. From this research it was concluded that the cost of implementation of the work plate formwork timber floors with cost of 368,021,577.00 more expensive compared to a cost of bondek plate 133.027.125.00
EVALUASI STABILITAS DINDING SALURAN PADA PERENCANAAN SALURAN IRIGASI LUMBANGSARI DESA LUMBANGSARI KECAMATAN BULULAWANG Supriyanto, Agus; Suhudi, Suhudi
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Landslide problems often occur in Indonesia, such as in irrigation canals, most are still in the form of land channels, which results in considerable water loss due to many leaks, so that water disputes often occur by farmers during the dry season. The channel wall landslides also impacted the silting of the irrigation channels which resulted in a non-smooth flow of water, the need for irrigation water on the DI Channel. Lumbangsari (252 Ha) cannot meet the water needs in the rice fields. One of the ways used to control the stability of the soil so that it does not slide is to build a retaining wall on the channel. Planning the channel wall located in DI. Lumbangsari (252 Ha), Lumbangsari Village, Bululawang District, Malang Regency. In this evaluation plan, data is taken directly through direct surveys at locations and using maps of soil types. In order for the building to function properly, the stability of the building must also be planned as well as possible, therefore, the stability of the channel wall is analyzed with the danger of rolling (bolting) and gliding under normal water conditions without earthquakes, double earthquakes and flood water conditions without earthquakes , with earthquakes analyzed using Rankine formulas. The result is SFsliding 1.85> 1.5 and 1.85> 1.5, SFbolters 1.64> 1.5 and 1.64> 1.5 (for normal conditions without earthquakes and with earthquakes) and SFsliding 2.05 > 1.5 and 2.03> 1.5, SFbolters 1.67> 1.5 and 1.66> 1.5 (for flood conditions without and with earthquakes), the situation is safe. In this study the budget plan for the cost of the channel wall is Rp. 52,781,008.28.
STUDI PERENCANAAN TEBAL LAPISAN TAMBAHAN (OVERLAY) PADA RUAS JL. PANGLIMA SUDIRMAN KECAMATAN KEPANJEN KABUPATEN MALANG (STA 0+0.00-0+1.000 M) Paningsih, Esol; Primasworo, Rifky Aldila
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Roughness of the road is a system composed of several layers of material that is placed on the land-base (subgrade).Construction of elastic roughness (flexible pavement) consists of four layers, namely the surface layer (surface course), the upper layers of the Foundation (base course), a layer of Foundation bottom (subbase course), the basic soil Layer (subgrade).The main objective of the building of roughness is to provide a flat surface with skid resistance, with fairly long service lifespan, as well as minimum maintenance. To smooth the roughness is done.This road roughness along 1 km with an average width of 7,5 m in this study the author discusses the planning process calculation of thick layer (overlay) by using a method of analysis of the components of the Department of public works, based on the results of the calculation, obtained the order of thick layer (overlay) consists of the Foundation of the baw ah (Sub Base) 20 cm thick, Foundation top (Base Course) 15 cm thick, long layer surface (Surface) 5 cm. And obtained that the surface layer (overlay) approx 6 cm type of Asphalt Macadam with age plan 10 year and the growth rate of traffic gained 1% per year.
PERBANDINGAN EFISIENSI BALOK KOLOM BETON DAN KOLOM BAJA DI BANGUNAN MUSEUM MPU PURWA KOTA MALANG Mesquita, Zerico Corrreia; Wijaya, Handika Setya
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

The beam is a wake up space bounded by 6 rectangle, where each side of the rectangle with the appropriate connecting one side of the rectangle, and the rectangle is congruent. Concrete and steel are the two types of material structure commonly used in the construction of a building. Both types of the material sometimes mutually help each other, but can also stand alone on its own, so a lot of structures with similar form and function can be built with concrete or steel. Concrete is a material that was relatively strong against a load of press but weak against load pull. To obtain the relative structure. strong against load-pull, then the added steel reinforcement inside it. A combination of concrete and steel reinforcement is known by the name of concrete. From the results of the calculations and analysis that there is a comparison between the budget cost of the reinforced concrete and steel structures with the difference between the cost of RP 156.261.84. So from a comparison of both the material turns out to be more economical structures reinforced concrete 10%(4).
ANALISA TINGKAT PELAYANAN PADA JALAN RADEN PANJI SUROSO KECAMATAN BLIMBING KOTA MALANG Kase, Ridho Aryandi; Rahma, Pamela Dinar
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Kota Malang merupakan kota terbesar kedua di Propinsi Jawa Timur dengan luas 110.06 km2, setelah Kota Surabaya, dengan jumlah populasi peduduk 895.387 jiwa (2017) dengan peningkatan 3,9% setiap tahunnya. Pertumbuhan penduduk yang setiap tahunnya terus bertambah seiring dengan penggunaan transportasi yang setiap tahunnya semakin meningkat pula. Dengan pertumbuhan lalu lintas yang semakin cepat harus diimbangi pula dengan peningkatan sarana transportasi yang memadai sehingga ruas jalan tidak menimbulkan hambatan dan kemacetan. Salah satu wilayah yang terkena dampak dari pertumbuhan lalu lintas yaitu di Jalan Raden Panji Suroso Kecamatan Blimbing, Kota Malang. Tujuan dari penelitian ini adalah untuk mengetahui beberapa hal penting diantaranya karakteristik, kapasitas ruas jalan, tingkat pelayanan jalan dan yang terakhir untuk mengetahui kapasitas dantingkat pelayanan jalan selama 5 tahun. Untuk memperoleh data lalu lintas dilakukan survei lalu lintas. Kemudian data-data tersebut diolah sehingga menghasilkan (LHR) pada minggu pertama lebih besar dari minggu kedua dengan jumlah minggu pertama 7646 smp/jam dan minggu kedua 7427 smp/jam, Kapasitas (C) Jalan Raden Panji Suroso pada tahun 2018 adalah sebesar 1526,56 smp/jam, sedangkan prediksi kapasitas pada 5 tahun berikutnya adalah sebesar 1207,16 smp/jam, tingkat pelayanan jalan 5 tahun kedepan L yaitu kondisi arus tertahan/rendah.
PRA RANCANG BANGUN ARANG AKTIF DARI SEKAM PADI DENGAN SISTEM FAST PYROLISIS DENGAN KAPASITAS 5000 TON/TAHUN Tapenu, Welem E.E; Abrina Anggraini, Sinar Perbawani
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Arang adalah suatu bahan padat berpori yang mengandung 80 - 90 % karbon yang dihasilkan dari pembakaran pada suhu tinggi (karbonisasi), sehingga bahan hanya terkarboninasi dan tidak teroksidasi menjadi karbondioksida. Penelitian ini bertujuan untuk mengetahui kondisi optimum pada proses karbonisasi dari sekam padi. Proses pengarangan dilakukan pada temperatur 400 oC, 500 oC dan 600 oC dengan variasi waktu 30 menit, 60 menit, 90 menit dan 120 menit. Kondisi optimum karbonisasi untuk sekam padi, yaitu pada suhu 400 oC selama 120 menit dengan kadar karbon terikat 41,3 %, kadar air 6,1 %, kadar abu 32,6 % dan kadar zat mudah menguap 20,5 %. Kata kunci : Arang, Karbonisasi, Sekam Padi ABSTRACT As agricultural countries, Indonesia has a great rice husk potential. One of alternative usage of rice husk isas a raw material for producing NSMC as fuel gas adsorbent. Production of NSMC consist of 2 stepsprocess, rice husk pyrolysis to produce and activated char with KOH. NSMC is nano structured porouscarbon as storage media for fuel gas. The aim of this experiments was studying the effect of pyrolysis timeupon char characteristic. The research was conductedin a fixed bed reactor equipped with condenser ininert condition. Pyrolysis conducted with time variation (30, 45, 60, 75 minutes). Pyrolysis reachedtemperature till 6000C. Char from pyrolysis process was analyzed with FTIR and BET methods. Thisresearch showed that char contained C-O functional group on absorbs range 1300-1000/cm. From BETmethods showed that char surface area was 8,91 m2/gram. It was concluded that optimum time of pyrolysisprocess was 75 minutes.

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