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All Journal Jurnal Teknologi Bulletin of Chemical Reaction Engineering & Catalysis The Journal of Pure and Applied Chemistry Research Jurnal IPTEK Jurnal Litbang Industri Science and Physics Education Journal (SPEJ) Indonesian Mining Journal Prosiding Konferensi Nasional PKM-CSR Jurnal Rekayasa Kimia & Lingkungan Jurnal Pengabdian Masyarakat (JPM) Pinang Masak Bulletin of Chemical Reaction Engineering & Catalysis Indonesian Mining Journal
Lenny Marlinda
Universitas Jambi
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences

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Production of Biofuel by Hydrocracking of Cerbera Manghas Oil Using Co-Ni/HZSM-5 Catalyst : Effect of Reaction Temperature Lenny Marlinda; Muhammad Al Muttaqii; Achmad Roesyadi; Danawati Hari Prajitno
The Journal of Pure and Applied Chemistry Research Vol 5, No 3 (2016)
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (881.909 KB) | DOI: 10.21776/ub.jpacr.2016.005.03.254

Abstract

This research aims to investigate the effect of various reaction temperatures on the hydrocracking of Cerbera manghas oil to produce biofuel as a paraffin-rich mixture of hydrocarbons with Co-Ni/HZSM-5 catalyst. Co-Ni/HZSM-5 catalyst was prepared by incipient wetness impregnation. The catalyst was characterized by X-ray diffraction (XRD), N2 physisorption according to the Brunauer-Emmet-Teller (BET) method, and atomic absorption spectrometry (AAS). The hydrocracking reaction was carried out in a pressure batch reactor, reaction temperatures of 300-375 oC for 2 hours, reactor pressure of 15 bar after flowing H2 for at least 1 hour, and a catalyst/oil ratio of 1 g/200 ml. The hydrocarbon composition was determined by gas chromatography-mass spectrometry (GC-MS). With the Co(0.88%)-Ni(3.92%)/HZSM-5 catalyst, the highest yield for gasoil was 46.45% at temperature of 350 oC. At this reaction temperature condition, the main abundant hydrocarbon compounds in gasoil-like hydrocarbon were n-paraffin, i.e. pentadecane of 20.06 area% and heptadecane of 14.13 area%. Biofuels produced showed that abundant hydrocarbon compounds were different at different reaction temperatures. Iso-paraffin with low freezing point and good flow property were not found in gasoil-like hydrocarbon. Isomerization depends on reaction condition and type of catalyst.
Co-Ni/HZSM-5 Catalyst for Hydrocracking of Sunan Candlenut Oil (Reutealis trisperma (Blanco) Airy Shaw) for Production of Biofuel Muhammad Al Muttaqii; Lenny Marlinda; Achmad Roesyadi; Danawati Hari Prajitno
The Journal of Pure and Applied Chemistry Research Vol 6, No 2 (2017): Edition of May-August 2017
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (840.031 KB) | DOI: 10.21776/ub.jpacr.2017.006.02.257

Abstract

The production of biofuel by hydrocracking of Sunan candlenut oil as renewable energy can substitute fossil energy. The purpose of this work is to produce biofuel by hydrocracking of Sunan candlenut oil with Co-Ni/HZSM-5 catalyst. The catalyst was prepared by incipient wetness impregnation method. The characterization of catalyst was determined by X-Ray Diffraction (XRD) and nitrogen adsorption-desorption isotherms. The functional groups of the hydrocarbon was determined by Fourier Transform Infrared (FT-IR). The hydrocarbon composition was determined by Gas Chromatography Mass Spectrometry (GC-MS). The results showed that biofuel composition consist of 0.14 area% isoparaffins, 12.29 area% cycloparaffins, 6.87 area% normal paraffins, 4.18 area% olefin, and 10.52 area% aromatics, and oxygenated compounds including 35.03 area% carboxylic acids. It was necessary to be done that the oxygenated compounds in biofuel were eliminated to produce the abundant paraffin hydrocarbons at reaction temperature above 350 oC.
Biosorpsi ion Cd+2 oleh adsorben dari daun nenas (Ananas comosus) teramobilisasi dalam Ca-alginat Nurhidayah Nurhidayah; Diah Riski Gusti; Lenny Marlinda; Intan Lestari
Jurnal Litbang Industri Vol 10, No 2 (2020)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v10i2.6304.139-146

Abstract

Daerah Tangkit Provinsi Jambi dikenal sebagai daerah penghasil nenas.. Pada musim panen buah nanas,  banyak ditemukan daun nanas yang tidak dimanfaatkan .Daun nanas mengandung selulosa yang dapat digunakan sebagai biosorben untuk mengadsorpsi ion-ion logam. Biosorpsi ion Cd+2 dalam larutan dipelajari menggunakan biosorben daun nanas yang teramobilisasi dalam Ca-alginat ( BDNC) dengan metode batch pada suhu kamar. Penelitian ini bertujuan untuk menentukan kapasitas biosorpsi biosorben daun nanas teramobilisasi dalam Ca-alginat sebagai alternatif biosorben ion logam dari limbah alami. Kapasitas adsorpsi pada kondisi optimal diperoleh pada pH 6, waktu kontak selama 120 menit dan konsentrasi 300 mg/L adalah 28,56 mg/g. Mekanisme biosorpsi cenderung secara isoterm langmuir dengan nilai R2 = 0,9632, KL = 0,0527 L/mg, yang menunjukkan kekuatan ikatan molekul adsorbat dan biosorben dan Qmax =  29,762 mg/g.  Biosorben daun nanas terambobilisasi Ca-alginat memiliki potensial yang bagus untuk mengadsorpsi ion logam Cd+2.
SINTESIS METANOL DARI HIDROGENASI KARBON MONOKSIDA DENGAN KATALIS Cu/ZnO/Al2O3 Edwin Permana; Reni Desriyanti; Lenny Marlinda; S.D. S. Murti
Jurnal Teknologi Vol 13, No 2 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.2.217-226

Abstract

Telah dilakukan penelitian untuk mempelajari pengaruh temperatur reaksi dengan katalis Cu/ZnO/Al2O3 menggunakan metode Hidrogenasi karbon monoksida. Reaksi dilakukan di dalam mini reaktor Micromeritic fixed-bed reactor dengan kondisi reaksi tekanan 14 bar menggunakan variasi temperatur reaksi 200, 240 dan 2600C. Pebandingan reaktan CO/H2/N2 yang digunakan adalah 15/30/5 mL/min. Hasil karakterisasi SEM-EDX menunjukkan bahwa katalis A memiliki komposisi Cu:Zn:Al 53:20:4%.  yang pada XRD nampak CuO, ZnO, Al2O3 di 2θ 32,540; 36,250;  67,240 dengan luas permukaan katalis 78,94 m2/g. Berdasarkan hasil analisis GC-TCD dan GC-FID, katalis A mampu menghasilkan konsentrasi metanol hingga 0,412% pada temperatur 2600C dengan selektivitas mencapai 85,794% pada 2000C. Sedangkan katalis B memiliki komposisi Cu:Zn:Al 10:8:40%, yang pada XRD nampak CuO, ZnO, Al2O3 di 2θ 35,890; 31,680;  66,660 dengan luas permukaan katalis 214,44 m2/g. Berdasarkan hasil analisis GC-TCD dan GC-FID, katalis B mampu menghasilkan metanol hingga 0,085% pada temperatur 2600C dengan selektivitas mencapai 43,516 % pada temperatur 2000C. Dengan demikian diketahui bahwa katalis A mampu menghasilkan selektivitas dan yield metanol yang lebih tinggi dibandingkan katalis B karena katalis A memiliki komposisi Cu yang lebih banyak dari pada katalis B. Semakin tinggi temperatur yang digunakan pada reaksi sintesis metanol, maka selektivitas pembentukan metanol semakin menurun, sedangkan yield metanolnya semakin meningkat.
Hydrocracking of Cerbera manghas Oil with Co-Ni/HZSM-5 as Double Promoted Catalyst Lenny Marlinda; Muhammad Al-Muttaqii; Ignatius Gunardi; Achmad Roesyadi; Danawati Hari Prajitno
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 2 Year 2017 (August 2017)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (641.609 KB) | DOI: 10.9767/bcrec.12.2.496.167-184

Abstract

The effect of various reaction temperature on the hydrocracking of Cerbera manghas oil to produce a paraffin-rich mixture of hydrocarbons with Co-Ni/HZSM-5 as doubled promoted catalyst were studied. The Co-Ni/HZSM-5 catalyst with various metal loading and metal ratio was prepared by incipient wetness impregnation. The catalysts were characterized by XRD, AAS, and N2 adsorption-desorption. Surface area, pore diameter, and pore volume of catalysts decreased with the increasing of metals loading. The hydrocracking process was conducted under hydrogen initial pressure in batch reactor equipped with a mechanical stirrer. The reaction was carried out at a temperature of 300-375 oC for 2 h.  Depending on the experimental condition, the reaction pressure changed between 10 bar and 15 bar.   Several parameters were used to evaluate biofuel produced, including oxygen removal, hydrocarbon composition and gasoline/kerosene/diesel yields. Biofuel was analyzed by Fourier Transform Infrared Spectroscopic (FTIR) and gas chromatography-mass spectrometry (GC-MS). The composition of hydrocarbon compounds in liquid products was similar to the compounds in the gasoil sold in unit of Pertamina Gas Stations, namely pentadecane, hexadecane, heptadecane, octadecane, and nonadecane with different amounts for each biofuel produced at different reaction temperatures. However, isoparaffin compounds were not formed at all operating conditions. Pentadecane (n-C15) and heptadecane (n-C17) were the most abundant composition in gasoil when Co-Ni/HZSM-5 catalyst was used. Cerbera Manghas oil can be recommended as the source of non-edible vegetable oil to produce gasoil as an environmentally friendly transportation fuel. 
Hydrocracking of Non-edible Vegetable Oils with Co-Ni/HZSM-5 Catalyst to Gasoil Containing Aromatics Danawati Hari Prajitno; Achmad Roesyadi; Muhammad Al-Muttaqii; Lenny Marlinda
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 3 Year 2017 (December 2017)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (134.117 KB) | DOI: 10.9767/bcrec.12.3.799.318-328

Abstract

Biofuel has been considered as one of the environmentally friendly energy sources to substitute fossil fuel derived from non-edible vegetable oil. This research aims to investigate the effect of the non-edible vegetable oil composition on a specific hydrocarbons distribution contained in biofuel and the aromatics formation through hydrocracking reaction with the Co-Ni/HZSM-5 catalyst. The formation of aromatics from non-edible vegetable oils, such as: Cerbera manghas, rubber seed, and sunan candlenut oils, containing saturated, mono- and polyunsaturated fatty acids is presented. The hydrocracking reaction was carried out in a pressure batch reactor, a reaction temperature of 350 oC for 2 h, reactor pressure of 15 bar after flowing H2 for 1 hour, and a catalyst/oil ratio of 1 g/200 mL. Liquid hydrocarbon product was analyzed by gas chromatography-mass spectrometry. Based on the GC-MS analysis, hydrocracking on three different oils indicated that polyunsaturated fatty acids were required to produce relatively high aromatics content. The sunan candlenut oil can be converted to gasoil range hydrocarbons containing a small amount of aromatic through hydrocracking reaction. Meanwhile, the aromatics in liquid product from hydrocracking of Cerbera manghas and rubber seed oils were not found. 
Penentuan Zonasi Bencana Tsunami di Kabupaten dan Kota Pesisir Provinsi Sumatera Barat Tri Utami Vemileza Putri; Ira Kusuma Dewi; Lenny Marlinda
SPEJ (Science and Physic Education Journal) Vol 5 No 2 (2022): SPEJ (Science and Physic Education Journal)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/spej.v5i2.3237

Abstract

Abstract: The purpose of this study was to determine how the tsunami disaster zoning in the Regency and Coastal City of West Sumatra Province was determined. The survey results show that geographically the regencies and cities on the coast of West Sumatra are around the threat of a tsunami, in addition to economic activities, government activities, and high population density around the coastal area. Regencies and cities located on the coast of West Sumatra, including West Pasaman Regency, Agam Regency, Padang Pariaman Regency, Pariaman City, Padang City, Pesisir Selatan Regency, and the Mentawai Islands, are feared to be the following places to be hit by a tsunami, for this reason, efforts are needed - efforts to overcome the tsunami hazard. In conclusion, the tsunami risk zone in the province of West Sumatra, which is very dangerous, is in the Mentawai archipelago with a wave height of 20-35 m and a wave arrival time of 10-20 minutes with a warning level of alert. And the story of tsunami disaster risk in coastal districts and cities of West Sumatra province is divided into four zones, namely: Not dangerous, Less dangerous, namely West Pasaman district, the danger is Agam district, Pariaman city, Padang Pariaman district, Padang city, and Pesisir Selatan district, Very dangerous namely the Mentawai Islands. Keywords: ArcGis 10.3, Comcot, Tsunami
EFFECT OF VACUUM RESIDUE AND PETROLEUM BENZINE AS THE ADDITIVE CALORIFIC VALUE AND MOISTURE OF COAL Ezra Bella Ramadhani Putri; Wahyudi Zahar; Lenny Marlinda
Indonesian Mining Journal Vol 25, No 1 (2022): INDONESIAN MINING JOURNAL, Vol. 25 No. 1, April 2022
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol25.No1.2022.1260

Abstract

Upgrading the coal is a process that increases the calorific value of low-rank coal through decreasing the moisture content of the coal. This method usually uses mixed heavy oil to close the opened pores after coal upgrading. The additives have a molecule structure like heavy oil. The aim of this study is to determine the effect of additives on the moisture content and calorific value after coal upgrading process. Coal upgrading in this study applies several variations i.e., coal particle size and coal mass mixed with an additive which is a mixture of vacuum residue and petroleum benzine with a ratio of  0.005 g: 1 mL as a coater. Before upgrading process, the moisture content and calorific value of the coal is 13.39 %adb and 6,663 cal/g db. After the process, the lowest moisture content of the coal in the ratio of coal (b/v) and additives was 4:3 with 21.75% ad. The highest calorific value of the coal was shown in the ratio of coal (b/v) and additives 1:1 with 7,189 kcal/kg. The lowest moisture content is indicated by the particle size of -120 mesh. The highest calorific value of coal is shown by the particle size of -120 mesh.
Peningkatan Dan Pemberdayaan Industri Keripik Pare Di Jambi Edwin Permana; Intan Lestari, Lenny Marlinda, Indra Lasmana Tarigan,; Yoga Andika, Oel Taradepa, Adhitya Eko Bagus
Prosiding Konferensi Nasional Pengabdian Kepada Masyarakat dan Corporate Social Responsibility (PKM-CSR) Vol 2 (2019): Peran Perguruan Tinggi dan Dunia Usaha dalam Mempersiapkan Masyarakat Menghadapi Era I
Publisher : Asosiasi Sinergi Pengabdi dan Pemberdaya Indonesia (ASPPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.494 KB) | DOI: 10.37695/pkmcsr.v2i0.365

Abstract

“KERE” adalah home industry makanan ringan yang terletak di Kabupaten Muara Jambi tepatnya di desa Mandalo Darat. Home industry “KERE” dikelola oleh Bapak Adrisma yang bergerak dalam pengolahan keripik pare. Industri rumah tangga ini dalam proses pengerjaannya masih sederhana dengan kapasitas produksi yang rendah. Permasalahan prioritas mitra adalah bagaimana meningkatkan kapasitas produksinya, sehingga usahanya mampu bertahan dan berkembang serta menyerap tenaga kerja lebih banyak dari masyarakat sekitarnya. Untuk mengatasi permasalahan tersebut, tim dan mitra sepakat untuk melakukan pembenahan layout ruang produksi, penerapan good manufacturing product, perbaikan kualitas kemasan produk, sistem pembukuan usaha kecil yang baik dan pengurusan sertifikasi P-IRT produk home industry. Kegiatan akan dilaksanakan dengan metode pendampingan dan pelatihan secara terstruktur terhadap berbagai hal yang menjadi kendala dalam upaya pengembangan usaha kedua home industry tersebut. Selain itu juga dilakukan monitoring dan evaluasi terhadap tahapan-tahapan pelaksanaan kegiatan tersebut untuk menyempurnakan tindakan berikutnya. Luaran yang akan dihasilkan dari kegiatan ini berupa: 1) Terbentuknya layout ruang produksi yang tertata dengan baik sesuai alur kerja yang sistematis, 2) Terimplementasinya good manufacturing product pada pelaku home industry,mulai dari pemilihan bahan baku, proses produksi, dan pasca produksi, 3) Meningkatnya kualitas kemasan produk home industry berbasis teknologi sederhana, 4) Tersedianya sistem pembukuan yang baik sesuai dengan standar usaha kecil untuk makanan olahan, 5) Meningkatnya jaminan kualitas produk dengan tersertifikasinya produk home industry dengan P-IRT.
Paving Block from LDPE Plastic and Pyrolysis Residue Lenny Marlinda
Jurnal IPTEK Vol 26, No 2 (2022)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2022.v26i2.2563

Abstract

The purpose of this study was to utilize residues of the plastic waste pyrolysis process and LDPE plastic as a substitute of cement in the manufacture of paving blocks. The residual pyrolysis process used was a pyrolysis residue of a mixture of polypropylene (PP) and low density polyethylene (LDPE) plastic waste with mass ratio of 100% PP, 75: 25%, 50: 50%, 40: 60%, 25: 75, and 100% LDPE. The mass ratio of LDPE plastic and pyrolysis residue were 70:30%, 60:40%, and 50:50%. The comparison of sand and residual pyrolysis of plastic waste used was 1: 1. The block paving obtained was characterized using SEM and quality tests were carried out with parameters of compressive strength and water absorption. The results of SEM analysis indicate the existence of a bond between sand and plastic pyrolysis residues. The variations in the type of plastic ratio in pyrolysis process indicate the varying of compressive strength and water absorption of the paving blocks
Co-Authors Achmad Roesyadi Danawati Hari Prajitno Diah Riski Gusti Edwin Permana Excel Emerlan Samiar Wasistha Ezra Bella Ramadhani Putri Heriyanti Ignatius Gunardi Indra Lasmana Tarigan Intan Lestari Ira Kusuma Dewi, Ira Kusuma Muhammad Al Muttaqii Muhammad Al Muttaqii Muhammad Al-Muttaqii Muhammad Al-Muttaqii Neviaty P Zamani Rahmi Rahmi Reni Desriyanti S.D. S. Murti Septina Is Heriyanti Sri Djangkung Sumbogo Murti Tri Utami Vemileza Putri Wahyudi Zahar Wahyudi Zahar Yoga Andika, Oel Taradepa, Adhitya Eko Bagus