Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Jurnal Teknik Kimia dan Lingkungan

jtkl
Website

Published by Politeknik Negeri Malang

ISSN : 25798537 EISSN : 25799746 DOI : http://dx.doi.org/10.33795/jtkl

Core Subject : Science, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

JTKL editors welcome manuscripts in the form of research articles, literature review, or case reports that have not been accepted for publication or even published in other scientific journals. Articles published in cover key areas in the development of chemical and environmental engineering sciences, such as: Energy Waste treatment Unit operation Thermodynamic Process simulation Development and application of new material Chemical engineering reaction Biochemical Biomass Corrosion technology The "JURNAL TEKNIK KIMIA DAN LINGKUNGAN" journal is a peer-reviewed Open Access scientiﬁc journal published by Politeknik Negeri Malang. This journal ﬁrst appeared in October 2017. The main purpose of the journal was to support publication of the results of scientiﬁc and research activities in the field of Chemical and Environmental Engineering. It is published twice a year in April and October.

Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi

Articles 133 Documents

7 8 9 10 11

Thermal Energy Conversion in Making Biochar from Jengkok Tobacco Waste Using Pyrolysis Extrusion Model Taufik Iskandar; Ayu Chandra Kartika Fitri
Jurnal Teknik Kimia dan Lingkungan Vol. 6 No. 2 (2022): October 2022
Publisher : Politeknik Negeri Malang

The pyrolysis process has many models with different characteristics and specifications. Each model provides a different conversion value depending on the temperature value, length of time, and the number of raw materials used. Jengkok Tobacco waste was dangerous because it contains Arsenic (As), and was used as a biochar product with economic and strategic value through the extrusion model pyrolysis process. The purpose of this study was to determine the thermal conversion value (yield percentage) of the pyrolysis process of tobacco waste material into biochar at the optimal temperature and processing time. The specified variables consist of process temperatures (400, 450, 500, 550, and 600°C) and processing times (30, 35, and 40 minutes). The product of the process will be analyzed statistically using the Spearman rank correlation test and followed by Minitab to produce the optimal value. The results showed that the thermal conversion value in making biochar was 29.476% (»30%) at a process temperature of 500°C and a processing time of 30 minutes.

Parameter Interaksi Biner Kesetimbangan Uap-Cair Campuran yang Melibatkan Alkohol Rantai Bercabang atau Aseton untuk Optimasi Proses Pemurnian Bioetanol Asalil Mustain; Khalimatus Sa'diyah; Agung Ari Wibowo; Dhoni Hartanto
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 2 (2019): October 2019
Publisher : Politeknik Negeri Malang

Parameter interaksi biner kesetimbangan uap-cair campuran yang melibatkan alkohol rantai bercabang atau aseton telah ditentukan pada penelitian ini. Data kesetimbangan uap-cair kondisi isobarik pada tekanan atmosferik telah dipilih total sebanyak 14 sistem. Data kesetimbangan tersebut kemudian dikorelasikan dengan model koefisien aktifitas Wilson, Non Random Two-Liquid (NRTL) dan Universal Quasi-Chemical (UNIQUAC) untuk diperoleh parameter interaksi binernya. Parameter tersebut ditentukan sebagai fungsi suhu pada penelitian ini untuk meningkatkan kemampuannya dalam aplikasi pada kisaran suhu yang panjang. Korelasi menunjukkan hasil yang baik dikarenakan root mean square deviation (RMSD) antara data eksperimental dengan hasil perhitungan relatif kecil. Sebagai tambahan, perilaku masing-masing sistem biner tersebut juga diamati pada kesempatan ini. Parameter yang diperoleh dapat digunakan untuk optimasi desain kolom distilasi pada proses pemurnian produksi bioetanol. The binary interaction parameters of vapor-liquid equilibrium for the mixtures involving branched-chain higher alcohols or acetone have been determined in this study. Isobaric vapor-liquid equilibrium data at atmospheric pressure have been selected for a total of 14 systems. The VLE data were then correlated with the Wilson, NonRandom Two-Liquid (NRTL) and Universal Quasi Chemical (UNIQUAC) activity coefficient models to obtain its binary interaction parameters. The parameters were determined as the temperature-dependent in this study to increase its ability in wide temperature range applications. The correlations showed good results because the root mean square deviation (RMSD) between the experimental data and calculation values were relatively low. In addition, the behavior of each binary systems were also observed in this study. The obtained parameters could be used to optimize the distillation column design in the purification process of bioethanol production.

Pembuatan Serbuk Aloe Vera sebagai Bahan Baku Kosmetik Masker Wajah Menggunakan Metode Vacuum Drying Ayu Ratna Permanasari; Saripudin Saripudin; Tri Reksa Saputra; Muhammad Fahmi Hidayatulloh; Nizar Fathurohman
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 2 (2019): October 2019
Publisher : Politeknik Negeri Malang

Serbuk lidah buaya merupakan salah satu produk olahan lidah buaya yang banyak digunakan industri kosmetik sebagai bahan tambahan. Tujuan dari penelitian ini adalah untuk menentukan kondisi operasi dan konsentrasi zat aditif dengan variasi temperatur operasi (50oC, 60oC, dan 70oC) dan variasi konsentrasi maltodekstrin (6%, 7%, 8%, dan 9%) dalam pembuatan serbuk lidah buaya untuk mencapai kandungan antrakuinon terendah dan kandungan glukomanan tertinggi. Bahan yang digunakan adalah lidah buaya (Aloe Vera barbadensis.) yang dilakukan perlakuan awal sebelum pengeringan. Serbuk lidah buaya diukur kadar air, rendemen, kandungan antrakuinon dan kandungan glukomanan. Hasil menunjukan bahwa pada temperatur 60oC dan konsentrasi maltodekstrin 8%, serbuk lidah buaya memiliki kadar air 6,92%; rendemen 9% kandungan antrakuinon 20,8%; dan kandungan glukomanan 11,5% merupakan hasil terbaik. Aloe vera powder is one of processed aloe products are widely used cosmetic industry as an additive. The purpose of this study was to determine the optimum operating conditions and concentrations of additives by variations in the operating temperature (50, 60, and 70°C) and the variation of the concentration of maltodextrin (6, 7, 8, and 9%) in the manufacture of aloe vera powder to reach the lowest anthraquinone content and highest glucomannan content. Materials used are pre treated aloe vera (Aloe Vera barbadensis.) before drying process. Aloe vera powder measured water content, yield, anthraquinone content, and glucomannan content. Results showed that at temperature of 60° C and a concentration of 8%. Aloe vera powder has a water content of 6,92%; 9,00% yield; glucomannan content of 11,50%; and 27.30% anthraquinone content is the best results.

Kinetic Parameters Evaluation of Furfural Degradation Reaction Using Numerical and Integral Methods Jabosar Ronggur Hamonangan Panjaitan; Guna Bangun Persada; Didik Supriyadi
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 2 (2019): October 2019
Publisher : Politeknik Negeri Malang

Furfural adalah salah satu bahan kimia penting yang dapat diubah menjadi berbagai bahan kimia seperti furfuryl alkohol dan asam levulinat. Furfural dapat diproduksi dari biomassa lignoselulosa dalam kondisi asam dengan mengkonversikan fraksi hemiselulosa dalam biomassa menjadi gula pentosa dan selanjutnya menjadi furfural. Reaksi degradasi furfural tidak diinginkan karena dapat mengurangi hasil furfural yang telah dihasilkan. Tujuan dari penelitian ini adalah untuk menghitung parameter kinetika dari reaksi degradasi furfural menggunakan metode numerik dan integral. Hasil penelitian menunjukkan bahwa nilai konstanta laju reaksi dan energi aktivasi dari perhitungan metode numerik dan integral berbeda karena perbedaan dalam metode perhitungan. Pada metode integral, reaksi degradasi furfural pada suhu yang lebih tinggi (170oC) sesuai dengan model orde nol karena sebagian besar furfural telah terdegradasi dalam reaksi, akan tetapi reaksi degradasi furfural pada suhu yang lebih rendah (150oC dan 160oC) sesuai dengan model non-second order. Furfural is one of the important building block chemicals that can be converted into various chemicals such as furfuryl alcohol and levulinic acid. Furfural can be produced from lignocellulosic biomass in acidic condition which hemicellulose fraction in biomass can be converted into pentose sugar and subsequently became furfural. Furfural degradation reaction is not desirable because it can reduce the yield of furfural that had been produced. The purpose of this study was to calculated kinetic parameters of furfural degradation reaction using numerical and integral methods. The results showed that the value of reaction rate constants and activation energies from numerical and integral methods calculation were different due to the differences in calculation methods. Using integral method, reaction order of furfural degradation at higher temperature (170oC) follows zero order because most of the furfural had been degraded in the reaction, but reaction order of furfural degradation at lower temperature (150oC and 160oC) follows non-second order.

Penambahan Sabut Kelapa dan Penggunaan Lem Kayu Sebagai Perekat untuk Meningkatkan Nilai Kalor pada Biobriket Enceng Gondok (Eichhornia crassipes) Indri Yanti; Muh Pauzan
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 2 (2019): October 2019
Publisher : Politeknik Negeri Malang

Penggunaan energi fosil yang berlebihan menjadikan ketersedian sumber energi tersebut semakin menipis. Oleh karena itu, diperlukan suatu usaha untuk mengurangi ketergantungan terhadap bahan bakar fosil, seperti menyediakan energi alternatif yang dapat diperbahurui, melimpah jumlahnya, dan ekonomis. Salah satu sumber energi alternatif yang dapat dikembangkan adalah biobriket dari biomassa. Pada penelitian ini, biomassa yang digunakan yaitu enceng gondok dan sabut kelapa dengan menggunkan lem kayu sebagai perekat. Nilai kalor enceng gondok masih rendah maka untuk meningkatkan nilai kalornya dilakukan penambahan sabut kelapa. Konsenterasi perekat adalah 10% dari massa total sampel dengan ukuran partikel 20 mesh untuk ketiga variasi perbandingan antara enceng gondok dan sabut kelapa yaitu 1:1, 3:1 dan 1:3 berturut-turut. Hasil penelitian menunjukkan bahwa biobriket dengan perbandingan 1:1, 3:1 dan 1:3 memiliki nilai kalor sebesar 4990 kal/g, 4749 kal/g dan 5312 kal/g berturut-turut. Nilai kalor 5312 kal/g sudah sesuai standar SNI 01-6235-2000. Sampel yang memiliki nilai kalor tertinggi tersebut disebabkan oleh komposisi sabut kelapa yang paling banyak diantara sampel lain. Sampel dengan kalor tertinggi memiliki kadar air, kadar abu, kadar zat terbang dan kadar karbon padat sebesar 9%, 12%, 60%, dan 19% berturut-turut.Excessive use of fossil energy results decrease of energy resources. Therefore, an alternative energy is studied to reduce the dependent on fossil energy. Alternative energy has the characteristics such as renewable, abundant and economist. One of the alternative energy that could be developed is biobriquette from biomass. In this research, biobriquette is synthesized from both water hyacinth and coconut husk, wood glue as adhesive. Due to the calorific value of water hyacinth that is relatively small, coconut husk is added, wood glue is used to improve the value. Glue’s concentration is 10% of the total sample’s mass with 20 mesh particle size for three samples with ratio between water hyacinth and coconut husk is 1:1, 3:1 and 1:3, respectively. The result shows that biobriquette with the ratio 1:1, 3:1 and 1:3 has a calorific value of 4990 cal/g, 4749 cal/g and 5312 cal/g, respectively. The 5312 cal/g is match to SNI 01-6235-2000 standard and that the highest value is the effect of the largest amount of coconut husk than the other samples. Biobriquette that has the highest calorific value has the inherent moisture, ash content, volatile matter and fixed carbon 9%, 12%, 60% and 19% respectively.

Pengaruh Iradiasi Gamma pada Konversi Biomassa Lignoselulosa Sabut Kelapa Menjadi Bioetanol Harum Azizah Darojati; Sugili Putra; Fahril Putera Zulprasetya
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 2 (2019): October 2019
Publisher : Politeknik Negeri Malang

Sabut kelapa adalah salah satu limbah lignoselulosa yang dapat dikonversikan menjadi bioetanol. Konversi bioetanol pada penelitian ini dilakukan melalui beberapa tahapan yaitu proses pre-treatment, proses Saccharification and Simultaneous Fermentation (SSF), dan proses pemurnian. Proses pre-treatment sebagai proses pemecahan ikatan lignoselulosa menjadi poin utama dalam proses konversi biomassa lignoselulosa. Penelitian ini dilakukan untuk mengetahui pengaruh iradiasi gamma terhadap pemecahan ikatan lignoselulosa pada proses pre-treatment tersebut. Proses iradiasi gamma divariasikan pada dosis sebesar 0 kGy, 100 kGy, 150 kGy, 200 kGy, 250 kGy dan dilanjutkan pre-treatment secara kimia menggunakan NaOH 4%. Kemudian dilanjutkan proses pemurnian setelah proses SSF selama 72 jam. Kadar bioetanol yang diperoleh setelah proses pemurnian diukur menggunakan metode refraktometri dan piknometri. Pada penelitian ini diperoleh kadar bioetanol tertinggi pada dosis iradiasi gamma 200 kGy, yaitu 35,15% untuk metode refraktometri, dan 36,77% untuk metode piknometri. Hasil tersebut jauh lebih tinggi bila dibandingkan dengan kadar bioetanol tanpa iradiasi gamma yaitu 2,45% untuk metode refraktometri, dan 6,92% untuk metode piknometri. Penelitian ini menunjukkan bahwa metode pre-treatment dengan iradiasi gamma dapat menghasilkan kadar bioetanol yang lebih tinggi dibandingkan tanpa menggunakan iradiasi gamma. Coconut husk is one of lignocellulosic wastes that can be converted into bioethanol. Bioethanol conversion in this study was carried out through several stages, namely the pre-treatment process, the Saccharification and Simultaneous Fermentation (SSF) process, and the purification process. The pre-treatment process as the process of breaking lignocellulosic bonds becomes the main point in the process of lignocellulosic biomass conversion. This research was conducted to determine the effect of gamma irradiation to breaking lignocellulosic bonds on the pre-treatment process. Gamma irradiation process was varied in doses of 0 kGy, 100 kGy, 150 kGy, 200 kGy, 250 kGy and continued with chemical pre-treatment using 4% NaOH. Then the purification process was continued after the SSF process for 6 days. Bioethanol levels obtained after the purification process were measured using refractometry and picnometry methods. In this study, the highest levels of bioethanol were obtained at a gamma irradiation dose of 200 kGy, namely 34.93% for the refractometry method, and 26.67% for the picnometry method, respectively. These results are much higher when compared to bioethanol levels without gamma irradiation, which is 2.25% for the refractometry method, and 5.49% for the picnometry method, respectively. This study shows that the pre-treatment method with gamma irradiation can produce higher levels of bioethanol than without using gamma irradiation.

Studi Aktivitas Reaksi Fotokatalisis Berbasis Katalis TiO2-Karbon Aktif Terhadap Mutu Air Limbah Power Plant Ade Sonya Suryandari; Asalil Mustain; Dana Wahyu Pratama; Inayatul Maula
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 2 (2019): October 2019
Publisher : Politeknik Negeri Malang

Pengolahan air limbah merupakan proses mengolah air buangan yang sudah tidak terpakai untuk dapat dikembalikan ke siklus air di lingkungan. Unit Waste Water Treatment Plant (WWTP) PT. Indonesia Power digunakan untuk mengolah air limbah yang berasal dari berbagai sumber salah satunya yaitu HRSG Sump Pit. Buangan air limbah yang berasal dari HRSG Sump Pit memiliki kandungan fosfat dikarenakan adanya penambahan fosfat pada unit sebelumnya yang bertujuan sebagai inhibitor proses korosi. Karakteristik limbah cair dapat ditentukan dari beberapa parameter diantaranya nilai pH, optical density (OD), dan kadar fosfat. Pengolahan air limbah dilakukan agar limbah cair yang dihasilkan dapat memenuhi baku mutu yang dipersyaratkan sebelum dibuang ke lingkungan. Penelitian ini dilakukan dengan mengaplikasikan reaksi fotokatalisis berbasis katalis TiO2/karbon aktif pada berbagai komposisi katalis dan durasi penyinaran. Proses fotokatalisis dilakukan dengan penambahan katalis pada perbandingan komposisi TiO2/karbon aktif 10:1, 5:1, 3:1 dan 2:1. Sedangkan lama waktu penyinaran 3, 4, 5, dan 6 jam. Hasil penelitian menunjukkan bahwa pH terendah sesuai baku mutu yaitu 8,13 dan penurunan kadar fosfat sebesar 70,12% mampu dicapai pada komposisi katalis TiO2/karbon aktif 3:1 dengan durasi penyinaran 5 jam. Penurunan OD tertinggi dicapai pada kondisi perbandingan komposisi katalis TiO2/karbon aktif 10:1 dan durasi penyinaran 6 jam yaitu sebesar 98,86%. Water treatment is the process of treating water discharges that are not used to be discarded into the environment. Wastewater Treatment Unit Plant (WWTP) of PT. Indonesia Power is used to treat wastewater coming from several sources, one of which is HRSG Sump Pit. Wastewater from the HRSG Pit contains phosphate which is related to the phosphate addition in the previous unit which is needed as an inhibitor of corrosion process. The characteristics of liquid waste can be determined from several parameters such as pH value, optical density (OD), and phosphate content. Wastewater treatment is carried out to obtain liquid waste which comply to the quality standards before being discarded into the environment. This research was carried out by applying the photocatalysis reaction based on catalyst TiO2-activated carbon with various catalyst compositions and irradiation duration. The process of photocatalysis was carried out by adding catalysts to the ratio of the composition of TiO2 / activated carbon 10:1, 5:1, 3:1 and 2:1. While the irradiation time is 3, 4, 5 and 6 hours. The results show that the lowest pH according to quality standards was 8.13 and a reduction in phosphate content of 70.12% was achieved in the 3: 1 TiO2/activated carbon catalyst composition with a 5-hour irradiation duration. The highest OD reduction was achieved under the condition ratio of catalyst composition of TiO2/activated carbon 10:1 and the irradiation duration of 6 hours that was equal to 98.86%.

Sintesis dan Karakterisasi Silika Aerogel Hidrofobik dan Oliofilik Dari Pasir Laut Sebagai Absorben Tumpahan Minyak Bramantya Bramantya; Losendra Primamas Yonando; Muhammad Rifaldi; Rama Oktavian
Jurnal Teknik Kimia dan Lingkungan Vol. 2 No. 2 (2018): October 2018
Publisher : Politeknik Negeri Malang

Proses pengolahan minyak di Indonesia sangat menguntungkan untuk perekonomian negara. Tetapi disamping itu, terdapat hal yang meyebabkan kerugian yaitu terjadinya tumpahan minyak. Tumpahan minyak bisa diatasi salah satunya dengan menggunakan absorben. Silika aerogel dapat digunakan sebagai absorben. Bahan baku utama sintesis silika aerogel adalah silika. Pada pasir laut di Indonesia rata-rata mengandung silika yang cukup tinggi yaitu sebesar 70%. Penelitian ini dilakukan untuk mengetahui pengaruh precursor dalam modifikasi material silika aerogel yang bersifat oliofilik dan hidrofobik. Pembuatan silika aerogel terbagi menjadi beberapa bagian yaitu pembuatan waterglass (sodium metasilikat) dari pasir laut, kemudian pembuatan silika aerogel dari waterglass. Dalam metode ini digunakan beberapa variabel pembanding yaitu dengan penambahan TEOS (tetraetil ortosilikat) dan heksana dengan perbandingan volume 1:1, 1:2, dan 1:3 sedangkan untuk penambahan etanol divariabelkan konsentrasi volumenya dengan rincian 10%, 20%, dan 30%. Bahan baku pasir laut dan produk silika aerogel dilakukan karakterisasi yang bertujuan untuk mengetahui sifat-sifatnya. Bahan baku pasir laut diuji dengan metode XRF (X-Ray Fluorescence) bertujuan mengetahui komponen yang terkandung dalam pasir silika dengan hasil SiO2 98,9%, K2O 1,2%, CaO 0,6%, TiO2 0,766%, V2O5 0,007%, MnO 0,028%, Fe2O3 0,431%, NiO 0,01%, CuO 0,035%, Yb2O3 0,03%. Sedangkan produk silika aerogel dilakukan uji sudut kontak dan uji serapan minyak, dari hasil uji sudut kontak didapat hasil pada sampel dua dengan penambahan TEOS dan heksana sebanyak 1:2 dan etanol 20% memiliki sudut kontak sebesar 143,95o sedangkan untuk uji serapan minyak sampel dua memiliki kemampuan menyerap minyak sebesar 13,98 g/g silika aerogel. Oil processing in Indonesia is very profitable for the economy of the country. However, in the exploration process there might be an oil spill which can cause a loss in oil production. Oil spill can be overcome by using absorbent. Silica aerogel can be used as absorbent. The main raw material of silica absorbent is silica. Sea sand in Indonesia contains high enough silica reaches 70% on average. This research was conducted to determine the effect of precursors in the modification of silica aerogel which is oliophilic and hydrophobic. The synthesys of silica aerogel was divided into several parts, namely synthesys waterglass from the sea sand and synthesys silica aerogel from waterglass. In this method, several variables were used with addition of TEOS (tetraethyl orthosilicate) and hexane with volume ratio 1:1, 1:2, and 1:3, while for addition of ethanol was varied with volume concentration of 10%, 20%, and 30%. Sea sand as raw material and silica aerogel as product was characterized in order to determine their properties. Sea sand were characterized using XRF (X-Ray Fluorescence) method contains SiO2 98.9%, K2O 1.2%, CaO 0.6%, TiO2 0.766%, V2O5 0.007%, MnO 0.028%, Fe2O3 0.431%, NiO 0.01%, CuO 0.035%, Yb2O3 0.03%. While the silica aerogel was characterixed by contact angle method and oil absorption test. In result, sample with addition of TEOS:hexane as much as 1:2 and ethanol 20% have contact angle of 143.95o and has ability to absorb oil 13.98 g/g silica aerogel.

Fermentasi Anaerobik Biogas Dua Tahap Dengan Aklimatisasi dan Pengkondisian pH Fermentasi Purwinda Iriani; Yanti Suprianti; Fitria Yulistiani
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Generally, biogas production on the household scale is using one-stage anaerobic fermentation technology, which accommodates two main processes of biogas production, namely acetogenesis and methanogenesis. An obstacle of using one-stage biogas digester is the imbalance of the fermentation process that indicated by the increase of organic load rate and shorter retention time that lead to un-optimal biogas productivity. This research undertook the application of two-stage anaerobic digestion, supported by adjusting the initial pH for both acetogenic and methanogenic processes. Firstly, the research initiated by acclimatization (activation) process of acetogenic and methanogenic bacteria via fermentation in laboratory scale (19 L) digesters, separately. The results of acetogenic bacteria acclimatization process on cow dung media showed the pH stability needed for the reaction acetogenic, in the range of 5-6, while the control showed the pH changes still in the neutral pH range (6-7). The substrate from lab-scale acetogenic and methanogenic digester, then used as a starter for pilot-scale digester (125 L and 500 L, respectively). The mixture of water and cow dung were adjusted at initial pH 5.5 on acetogenic digester for 2 weeks. Those material were used for biogas production in the methanogenic digester. The result of the methanogenic process showed an increasing volume of biogas and the composition of methane (CH4) in the biogas. The highest CH4 composition was obtained on the 20th day, which reached 74.82%, and the highest volume of biogas production was at day 22, with the rate of 8.87 L/day. The highest energy potential obtained was 217.66 kJ/day.

Review Pemanfaatan Design Expert untuk Optimasi Komposisi Campuran Minyak Nabati sebagai Bahan Baku Sintesis Biodiesel Reshita Amalia Ramadhani; Dody Herdian Saputra Riyadi; Bayu Triwibowo; Ratna Dewi Kusumaningtyas
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Mixing different types of vegetable oils for synthesis of biodiesel is one of the efforts for renewable alternative energy. Mixed oil of vegetable oils more potential because it is not difficult to finding raw materials and not useful yet. Vegetable oils mixture as raw materials used include: Jatropha curcas oil, nyamplung oil and waste cooking oil. The mixed and optimized compositions use the simplex lattice design method with a total mixture. The data to be obtained is the influence data of each mixed oil to decrease of FFA during esterification reaction. Simplex lattice design method is one of the methods available in the software Design Expert 10.0. The designs used to optimize the formula on different amounts of different material compositions. The biodiesel synthesis is run based on the experimental design produced by the Expert Design 10.0 program. The use of lattice simplex method design: determination formula, optimizing formulation variable and total number of runs, keeping total concentration constant. ANOVA (Analysis of variance) to determine the significance of response analysis among variables and can know the suggested model. Desirability is a method that shows the program's ability to meet the criteria specified in the final product. The desired value that is critical to the desired product improvement program is so perfect.

Page 9 of 14 | Total Record : 133

7 8 9 10 11

Filter by Year

2017 2025

Filter By Issues

All Issue Vol. 9 No. 2 (2025): October 2025 Vol. 9 No. 1 (2025): April 2025 Vol. 8 No. 2 (2024): October 2024 Vol. 8 No. 1 (2024): April 2024 Vol. 7 No. 2 (2023): October 2023 Vol. 7 No. 1 (2023): April 2023 Vol. 6 No. 2 (2022): October 2022 Vol. 6 No. 1 (2022): April 2022 Vol. 5 No. 2 (2021): October 2021 Vol. 5 No. 1 (2021): April 2021 Vol. 4 No. 2 (2020): October 2020 Vol. 4 No. 1 (2020): April 2020 Vol. 3 No. 2 (2019): October 2019 Vol. 3 No. 1 (2019): April 2019 Vol. 2 No. 2 (2018): October 2018 Vol. 2 No. 1 (2018): April 2018 Vol. 1 No. 1 (2017): October 2017 More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Agung Ari Wibowo

Contact Email
agung.ari@polinema.ac.id

Phone
+62341404424

Journal Mail Official
jtkl@polinema.ac.id

Editorial Address
Jl. Soekarno Hatta No. 9, Malang, Indonesia

Location
Kota malang,

Jawa timur

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Agung Ari Wibowo

Contact Email agung.ari@polinema.ac.id

Phone +62341404424

Journal Mail Official jtkl@polinema.ac.id

Editorial Address Jl. Soekarno Hatta No. 9, Malang, Indonesia

Location Kota malang, Jawa timur INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Agung Ari Wibowo

Contact Email
agung.ari@polinema.ac.id

Phone
+62341404424

Journal Mail Official
jtkl@polinema.ac.id

Editorial Address
Jl. Soekarno Hatta No. 9, Malang, Indonesia

Location
Kota malang,

Jawa timur

INDONESIA