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All Journal METANA Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik CHEMICA Jurnal Teknik Kimia R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Inovasi Teknik Kimia Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Agrotechnology Innovation (Agrinova) Jurnal Teknologi Pertanian Gorontalo CHEMTAG Journal of Chemical Engineering Journal of Chemical Process and Material Technology Food and Agro-industry (FAGI) Journal Food and Agro-industry (FAGI) Journal Jurnal Karya untuk Masyarakat (JKuM) Ngudi Waluyo Empowerment : Jurnal Pengabdian Kepada Masyarakat
Cyrilla Oktaviananda
Politeknik Katolik Mangunwijaya
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Veterinary Other

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Simulation of Dispersion Potential and Fatality Percentage of SO2 and CO2 Flue Gas from Combustion of Coal in West Lombok Power Plant using Gaussian Model Shafwan Amrullah; Cyrilla Oktaviananda
CHEMICA: Jurnal Teknik Kimia Vol 7, No 2 (2020): Desember 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v7i2.17451

Abstract

Combustion of coal in coal-fired power plants produces air pollution such as SO2, NOx, CO2, and Particulates. The Jeranjang power plant in West Lombok Regency uses 300,000 tons/year of coal to generate 75 MW of electricity. It can be a large potential for environmental pollution. This research aims to simulate the potential of SO2 and CO2 exhaust gas dispersion to the environment and the fatality percentage caused by burning the Jeranjang coal power plant using the Gauss Model. The research was conducted by a literature study and direct observation of PLTU Jeranjang. After that, in this research, the SO2 and CO2 concentration were calculated. At the end of the study, estimating the potential dispersion and fatality percentage by SO2 and CO2 gas was also calculated around the Jeranjang power plant. The results are SO2 dispersion with a dispersion mass of 0.145 kg/sec from a distance of 2,000 to 46,000 m increased from 1x10-45 to 1.9x10-5 ppm and decreased to 0 ppm. The fatality percentage generated is 0%. The CO2 dispersion potential into the environment without a mass of 12.378 kg/sec increases at a distance of 2,000 to 58,000 m, from a concentration of 2.7x10-65 to 0.00184 ppm. The CO2 concentration decreases to 0 ppm. The fatality percentage generated is 0%. The calculation of settlement dispersion around the PLTU Jeranjang can be safe from SO2 and CO2 dispersion, and the fatality percentage generated is 0%.
Hydrothermal Treatment, Sawdust, Corn Cob, Mixture, Solid Fuel Cyrilla Oktaviananda; Agus Prasetya
Agrotechnology Innovation (Agrinova) Vol 2, No 1 (2019)
Publisher : Agrotechnology Innovation Center, Universitas Gadjah Mada, Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1310.892 KB) | DOI: 10.22146/agrinova.51987

Abstract

Hydrothermal treatment is a thermochemical process that converts biomass into a coal-like material called hydrochar by applying elevated temperature to biomass in suspensions with water under saturated pressure for a certain time. With this conversion process, easy to handle fuel with well-defined properties can be created from biomass residues, even with high moisture content. Biomass is one of the renewable energy resources in Indonesia which has abundant resources potential. In this research, the effect of corn cob-sawdust mixture w/w (100%:0%), (75%:25%), (50%:50%), (25%:75%) and (0%:100%) at initial pressure 1.0 MPa to hydrothermal treatment of biomass were examined. All samples were then characterized in terms of yield, proximate analysis, calorific value, and changes in functional groups by FTIR. Approximately 47-68% of origin material was recovered as a hydro-char. The gross calorific value ranged from 5160-5402 cal/gram. Hydrothermal treatment of sawdust and corncobs mixture with ratio 100% sawdust produced solid with higher heating value of 5402 cal/gram.
Effect of Air Fuel Ratio to Quality of Municipal Solid Waste Using Downdraft Gasification Shafwan Amrullah; Cyrilla Oktaviananda
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 1 (2022): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i1.1640

Abstract

Gasifikasi menggunakan limbah padat kota (MSW) berdampak pada peningkatan kualitas lingkungan dan peningkatan pasokan listrik untuk daerah-daerah yang sulit dijangkau, khususnya di Indonesia. Namun proses gasifikasi membutuhkan proses pengujian kualitas terlebih dahulu agar dapat menghasilkan produk syngas dan kelistrikan yang maksimal. Maka dalam penelitian ini dilakukan proses pengujian pengaruh variasi Air Fuel Ratio (AFR) terhadap kualitas proses gasifikasi (Cold Gas Efficiency (CGE), Carbon Conversion Efficiency (CCE), dan specific fuel consumption (sfc) atau konversi konsumsi spesifik). Penelitian dilakukan dengan melakukan proses gasifikasi dengan tipe downdraft pada nilai AFR 0,5; 0,51; 0,53; 0,54; 0,55. Hasil penelitian ini menunjukkan adanya peningkatan nilai syngas seiring dengan peningkatan nilai AFR. Sedangkan nilai CGE meningkat seiring dengan meningkatnya AFR proses gasifikasi MSW. Peningkatan terjadi dari 9 menjadi 13%, meskipun hasil ini masih sangat rendah. Di sisi lain, CCE juga mengalami peningkatan dengan meningkatnya AFR gasifikasi MSW. Peningkatan nilai terlihat dari 33-43%. Hasil ini juga masih tergolong kecil, artinya efisiensi konversi karbon pada proses ini sangat rendah. Pada akhirnya, dapat dilihat bahwa nilai scf menurun dengan meningkatnya AFR. Penurunan yang didapat adalah dari 5,3 menjadi 2.
Polymerization of Poly Methyl Methacrylate Using Emulsion Method and H2O2 as Initiator Sari Purnavita; Cyrilla Oktaviananda; Sri Sutanti; Herman Yoseph Sriyana; Antonius Prihanto; Antonio Mafeli
Journal of Chemical Process and Material Technology Vol 1, No 2 (2022)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.67 KB) | DOI: 10.36499/jcpmt.v1i2.6642

Abstract

This study aims to study the effect of the amount of initiator (H2O2) on the viscosity of the Polymethyl Methacrylate (PMMA) emulsion and the solids content. The treatment of independent variables is H2O2 by 1%, 2%, 3%, and 4%. This research procedure was carried out in a two-stage process. The first stage is the process to separate the inhibitor contained in the methyl methacrylate monomer by adding a 1 N concentration of NaOH solution, stirring until evenly distributed, then put into a separating funnel to separate pure methyl methacrylate from the inhibitor dissolved in alkaline solution. The second stage is the polymerization reaction process using the emulsion method. Dissolve the poly vinyl alcohol in hot water at 70oC, put the poly vinyl alcohol solution into a three-neck flask, which is equipped with a stirrer and a hot plate heater, add the initiator and up to 60oC, then add the methyl methacrylate monomer with stirring and heating at room temperature 100oC for 1 hour. The resulting product is a thick poly methyl methacrylate emulsion, has a milky white color, and has good adhesion. Furthermore, the viscosity test was carried out using ford cup number 4 and the solids content test. The results showed that the more initiators added, the higher the viscosity and the higher the solids content.
Karakterisasi Proses Gasifikasi Menjadi Listrik Berbahan Baku Sampah Padat Perkotaan Menggunakan Reaktor Tipe Downdraft di Provinsi Nusa Tenggara Barat Shafwan Amrullah; Sopyan Ali Rohman; Cyrilla Oktaviananda; Fadhli Dzil Ikram
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 4 No. 2 (2022): JPPL, September 2022
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v4i2.1433

Abstract

Indonesia is currently experiencing the problem of Municipal Solid Waste (MSW), energy and environmental crisis. Gasification by electric generator is the solution. This study about the design and characterization of the gasification reactor with MSW feed. This research was conducted by examining the effect of gasification temperature (550, 600, 650, 700, 750, 800, 850oC) and Air Fuel Ratio variations (0,5; 0,51; 0,53; 0,54l; and 0,55). The variabel test of temperature variations is syngas concentration, fuel conversion (FC), cold gas efficiency (CGE), carbon conversion efficiency (CCE), and specific fuel consumption (SCF). The AFR evaluated syngas and SCF. The result showed an increase the syngas levels with the increasing the gasification temperature, except CO2. The FC value increased(71% to 74%) and The CGE increases (77 to 97%). The CCE increases from 69% to 78% (550-650oC) and decreases again to 66% (850oC), and SCF decreased (4.5-0.5 kg/kWh). In the AFR variation, syngas levels increase with increasing AFR, but scf decreased (5.3 to 2), this proves efficient combustion.
Uji Karakteristik Briket Berbahan Baku Bonggol Jagung Berdasarkan Variasi Jumlah Perekat Yogi Wahyudi; Shafwan Amrullah; Cyrilla Oktaviananda
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 4 No. 2 (2022): JPPL, September 2022
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v4i2.1479

Abstract

Charcoal briquettes are a renewable form of energy from biomass. This briquette is an alternative to fossil fuels. In this study, the process of analyzing the effect of the amount of adhesive on the water content, index of destruction, ash content, and calorific value of corn cob briquettes was carried out. The use of tapioca flour adhesive concentrations of 0%, 3%, 5%, and 7%. This study used a completely randomized series or RAL for a single factor with ANOVA analysis to determine the effect of the use of various adhesives on corn cob briquettes. The results obtained were, 0% produced briquettes with values of moisture content, ash content, heating value, and destruction index were 0.19%, 0.14%, 0.19% and 5.655 Cal/gr, respectively. For 3% adhesive, the yield of moisture content, ash content, calorific value, and destruction index were 0.21%, 0.33%, 0.28% and 5.398 Cal/gr, respectively. At 5% adhesive concentration the test results of moisture content, ash content, calorific value, and destruction index were 0.22%, 0.35%, 0.34% and 4.431 Cal/gr, respectively. Meanwhile, the adhesive concentration of 7% was 0.31%, 0.89%, 0.38% and 3.382 Cal/gr, respectively. If this result is based on SNI, it can be said that it has met these standards.
Ekstraksi Galaktomanan dari Kolang-Kaling Sari Purnavita; Cyrilla Oktaviananda; Natasya Devina Aurelia Purba
Prosiding Seminar Sains Nasional dan Teknologi Vol 12, No 1 (2022): VOL 12, NO 1 (2022): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/psnst.v12i1.7365

Abstract

Kolang kaling atau (Arenga Pinnata Merr) diperoleh dari tanaman aren. Kandungan galaktomanan pada kolang kaling  sebesar 4,58 %. Sedangkan komponen yang terdapat pada hasil ekstraksi kolang kaling diantaranya protein, galaktomanan, serat kasar dan lemak .  Galaktomanan  adalah  heteropolisakarida  yang  terdiri  dari  rantai  manosa dan galaktosa. Tujuan penelitian ini adalah untuk mempelajari kondisi optimum  rasio jumlah bahan pengendap (350ml, 300ml,  250ml,  200ml) dan waktu ekstraksi (2 jam dan 3 jam) terhadap yield galaktomanan. Percobaan ini dilakukan dengan rancangan acak lengkap faktorial dengan dua kali ulangan. Variabel tetap yang digunakan adalah jenis bahan pengendap (metanol), konsentrasi pengendap (96%), rasio pelarut dengan jumlah serbuk kolang-kaling, dan suhu ekstraksi (50 oC). Anilisis galaktomanan hasil ekstraksi menunjukkan positif adanya galaktomanan, kadar serat kasar optimal yaitu 8,05%, interperasi spektrum infra merah menunjukan adanya serapan vibrasi –OH, -CH, -CH alifatik dan –C-O pada panjang gelombang yang sesuai. Berdasarkan analisis galaktomanan dengan uji Luff Schroll dan uji FTIR dapat disimpulkan bahwa senyawa hasil esktraksi galaktomanan yaitu merupakan senyawa galaktomanan, dan ekstraksi galaktomanan mampu membentuk film.
HYDROTHERMAL TREATMENT CAMPURAN BIOMASSA DAN PREDIKSI NILAI KALOR HYDROCHAR Cyrilla Oktaviananda; Ilma Fadlilah
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 1 No. 01 (2019): JPPL, September 2019
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v1i01.39

Abstract

Energy needs in Indonesia always increase along with population growth and industrial growth. On the other hand, the abundant availability of biomass waste, especially teak sawdust and corn cobs, encouraged researchers to find the right technique for converting biomass waste to make the waste an alternative energy source. Hydrothermal Treatment is one of the techniques for thermal biomass conversion that can convert biomass into coal-like material called hydrochar. The biomass waste is in a heterogeneous or mixed state.The purpose of this study is to obtain the optimum composition of the biomass mixture to make solid fuels using the hydrothermal treatment method and to do a regression analysis to estimate heating value based on proximate analysis. The biomass waste used in this study was teak sawdust and corn cobs powder. The results from this study are the highest yield of hydrochar in the hydrothermal treatment process of teak sawdust which is equal to 68.1% and the highest calor value in the hydrothermal treatment of biomass with the same composition which is equal to 5402 cal / gram. An equation to predict the value calor hydrochar is HHV = 0.837 (% AC) +0.152 (% VM) +0.389 (% FC) -0.022 (% WC) with an absolute error of 4.11% and a relative error of 0.28 %.
Potensi Penerapan Konsep Ekologi Industri Untuk Mengatasi Limbah Peternakan Dan Pertanian Kelompok Tani Shafwan Amrullah; Theresia Evila Purwanti Sri Rahayu; Cyrilla Oktaviananda
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 2 No. 2 (2020): JPPL, September 2020
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v2i2.293

Abstract

The agriculture and livestock sector is the biggest contributor to environmental damage. Where from the total national sources of greenhouse gases, the agricultural sector accounted for 13.6%. From this data, there needs to be an appropriate design to deal with this problem. One way is to apply the concept of industrial ecology as the best solution to deal with this problem. So that in this study quantitative calculations were carried out to determine the potential application of the concept of industrial ecology in the agriculture and animal husbandry sector in the Tojang Maju 3 Farmer Group located in Masbagik District, East Lombok Regency, West Nusa Tenggara Province. The study was conducted with a quantitative calculation of waste generated by the livestock sector as well as farmer group questions, which then carried out the design process of the industrial ecological model. The results obtained the use of liquid organic fertilizer (POC) in the agricultural sector as much as 280.5 for rice, 37.4 for chilli farming, and 37.4 liters for cabbage farming and the rest as sources of economics. Whereas straw produced by rice farming (57,000 kg) is used as silage in the livestock sector with a demand of 4,957.2 kg. Rice straw is also used in the chilli agriculture sector as mulch with a requirement of 1,140 kg and the rest (50,903 kg) is used as raw material for the production of synthetic gas for energy sources of farmer groups. While the rest of the chilli and cabbage agricultural products are used as raw material for biogas with a mass of around 70,300 kg which is directly utilized by the groups. For cow as much as 5,355 kg is fed to the biogas digester as biogas for the consumption of farmer groups, with a gas potential of 535.5 m3.
PENGARUH WAKTU PEMASAKAN DAN PERSENTASE PVAc TERHADAP KUALITAS KERTAS DARI MAHKOTA NANAS Cyrilla Oktaviananda; Sari Purnavita; Salsabila Devinta Ayunindhia
Jurnal Inovasi Teknik Kimia Vol 8, No 2 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v8i2.8098

Abstract

Buah nanas yang diolah pada berbagai industri pengolahan nanas akan menghasilkan mahkota nanas sebagai limbah yang belum dimanfaatkan secara maksimal. Salah satu cara untuk memanfaatkan mahkota nanas agar memberikan nilai tambah adalah dengan mempersiapkannya sebagai bahan baku alternatif dalam pembuatan kertas. Sebagai tindak lanjut dari penelitian terdahulu, pada penelitian ini dilakukan pembuatan kertas dengan tujuan untuk mengetahui pengaruh waktu pemasakan dan pengaruh persentase PVAc terhadap gramatur, indeks tarik, dan indeks sobek kertas yang dihasilkan. Proses pembuatan kertas dari mahkota nanas diawali dengan memasak mahkota nanas dalam larutan NaOH 10% dengan variasi waktu pemasakan 20, 30, 60, 90, dan 120 menit. Setelah itu, campuran ditambahkan PVAc sebagai perekat dengan variasi jumlah PVAc 1%, 2%, 3%, 4%, dan 5%. Campuran yang telah homogen selanjutnya dicetak menggunakan cetakan kayu. Karakteristik kertas yang diuji meliputi gramatur, indeks tarik, dan indeks sobek. Hasil penelitian menunjukkan bahwa gramatur kertas menurun seiring lamanya waktu pemasakan karena selulosa dan lignin dalam mahkota nanas terdegradasi. Gramatur kertas yang memenuhi SNI 8218:2015 adalah kertas dengan waktu pemasakan 30, 60, 90, dan 120 menit. Indeks tarik dan indeks sobek kertas terbaik diperoleh pada waktu pemasakan pulp selama 90 menit. Pada semua perlakuan variasi persentase PVAc, nilai gramatur yang dihasilkan memenuhi persyaratan mutu kertas menurut SNI. Berbeda dengan nilai gramatur, indeks tarik dan indeks sobek pada variasi ini tidak memenuhi persyaratan mutu kertas.
Co-Authors Adnan Darmawan Agus Prasetya Amrullah, Shafwan Antonio Asmaranda Putra Kusuma Antonio Mafeli Antonius Prihanto Aprilianto, Zaka Elisa Rinihapsari Endah Tri Utami Handhayani Evila Purwanti Sri Rahayu, Theresia Fadhli Dzil Ikram Firstyaline, Jennycha Ananda Budhi Friska Septia Friska Septia Herman Yoseph Sriyana Ilma Fadlilah Leony Margrita Lucia Hermawati Rahayu Margrita, Leony Mumpuni Asih Pratiwi Natasya Devina Aurelia Purba Priyo Wibowo Rahel Margareta Salsabila Devinta Ayunindhia Sari Purnavita Sari Purnavita Sari Purnavita Sari Purnavita Septia, Friska Sopyan Ali Rohman Sri Sutanti Sri Sutanti Stefanus Muryanto Teresa Divana Rosaria Yogi Wahyudi Yosef Bintang Satya Primahendra