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All Journal JURNAL SELULOSA Kinetika Chemical Engineering Journal Storage (CEJS) JUSTE (Journal of Science and Technology) JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI (JISI) Jurnal Pengabdian Masyarakat dan Riset Pendidikan Journal Serambi Engineering (JSE)
Martha Aznury
Politeknik Negeri Sriwijaya
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Other

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Review Artikel VARIASI PRODUKSI BIOETANOL DARI AMPAS TEBU Rizki Nurjanah; Martha Aznury
KINETIKA Vol. 12 No. 2 (2021): KINETIKA 01072021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Bioethanol is ethanol made from plants that contain starch, sugar and other cellulosic plants. The general methods used are hydrolysis and anaerobic fermentation methods. This review aims to compare the results of several studies on the manufacture of bioethanol from various raw materials and the treatment of variations in fermentation pH, type of yeast, and fermentation time. Based on the studies that have been carried out, it can be concluded that the largest yield of bioethanol yields is found in research conducted by Guiherme et al. (2019) showing that the yield of bioethanol from bagasse is 88% w / v with. with alkaline pretreatment hydrolysis and anaerobic fermentation methods using the enzymes Kluyveromyces marxianus and Saccharomyces cerevisiae. Then the second largest result was found in research according to Goshandrou et al. (2014) which produced a percent ethanol of 81% v / v from bagasse. with hydrolysis and anaerobic fermentation methods through the Zygomicetes enzyme.
ANALISIS PENGGUNAAN LIMBAH B3 SPENT BLEACHING EARTH SEBAGAI BAHAN BAKAR ALTERNATIF DI PT. SEMEN BATURAJA (PERSERO) TBK: Limbah B3, Spent Bleaching Earth (SBE), Bahan Bakar Alternatif, Rotary Kiln, Clinker Robiansyah; Mustain; Martha Aznury; Safaruddin
KINETIKA Vol. 13 No. 03 (2022): KINETIKA 01112022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Hazardous waste of Spent Bleaching Earth (SBE) which is processed by PT. Semen Baturaja (Persero) Tbk is used asan alternative fuel to replace coal, whose price continues to rise, because SBE still contains oil in it. However, the useof hazardous waste of SBE can affect the specific heat consumption needed in the operation of the rotary kiln machineand the ash content in it can affect the quality of the clinker produced. With the percentage of SBE alternative fuelmixture to coal fuel of 0%, 1,12%, 2,07%, 3,13%, 4,09%, 4,93%, 6,13% and 6,88%, the analysis carried out on ofspecific heat consumption, fuel cost efficiency, rotary kiln machine operation and its effect on the quality of the clinkerproduct produced. From the results of this case study, with an increase in the percentage of the SBE mixture, the ashvalue of the mixed fuel trend to increase but is not significant, while the calorific value of this fuel mixture trend todecrease. The conclusion that can be drawn from the use of hazardous waste of SBE as an alternative fuel with amixture percentage of 0% to 6.88% is that as the fuel mixture ratio increases, specific heat consumption decreases,fuel cost efficiency increases, fuel requirements become lower, compared to not using hazardous waste of SBEalternative fuel and has no significant effect on the quality of the clinker product produced.Key words: Hazardous waste, Spent Bleaching Earth (SBE), Alternative fuel, Rotary kiln, Clinker
Pengaruh Metanol dalam Produksi Biodiesel dari Tamanu Oil Menggunakan Katalis Lipase Martha Aznury; Ahmad Zikri; Robert Junaidi; Marieska Lupikawaty; Chintia Oktariyensi
JURNAL SELULOSA Vol 12, No 01 (2022): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25269/jsel.v12i01.360

Abstract

Biodiesel is a fuel derived from renewable sources, wich can be used efficiently in petrodiesel engines. This study aims to produce biodiesel from tamanu oil enzymatically using the lipase enzyme. This enzimatic method has a high value product made during the production of biodiesel. Biodiesel production through the transesterification process with methanol reactant and alkaline catalysts has many weaknesses, namely the presence of a saponification reaction and it is difficult to separate because the catalyst is homogeneus. The result of this study indicate that tamanu oil has been seccessfully converted into biodiesel with an optimum oil : methanol molar ratio of 1:5 and a yield precentage of 87,67% with a methyl ester content of 97,37%
Analisa Perubahan Waktu terhadap Kualitas Hasil Pengeringan Daun Kelor (Moringa oleifera) menggunakan Photovoltaic Tray Dryer Martha Aznury; Muhammad Delika Maulidi; Selastia Yuliati
JUSTE (Journal of Science and Technology) Vol. 1 No. 2 (2021): JUSTE
Publisher : LLDIKTI WIlayah XII Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.701 KB) | DOI: 10.51135/justevol1issue2page175-181

Abstract

Tanaman Kelor adalah salah satu tanaman paling luar biasa yang pernah ditemukan. Salah satu khasiat yang bisa diambil dari pohon kelor terdapat pada daunnya. Daun kelor yang sudah dikeringkan memiliki kandungan gizi yang lebih banyak. Mengingat hal tersebut, maka dirancanglah alat photovoltaic tray dryer yang merupakan alat pengering yang memanfaatkan sinar matahari melalui Photovoltaic Solar Energy System (SESF). Photovoltaic tray dryer dengan kapasitas empat rak dengan berat 100 gram daun kelor per rak. Sebelum melakukan proses pengeringan, daun kelor dilakukan pengujian kadar air awal. Proses pengeringan dilakukan pada variasi waktu yaitu 30, 60, 90, 120, 150, 180, 210, dan 240 menit selama empat jam pada pengeringan dengan suhu 60°C. Setiap 30 menit daun kelor ditimbang. pada rak 1, 2, 3 dan 4 untuk menentukan kadar air. Kadar air daun kelor kering yang diharapkan setelah dikeringkan kurang dari 10%. Kadar air daun kelor pada tiap nampan mulai dari rak 3, 2, 2, dan 4  masing-masing adalah42,48%, 44,16%, 64,80% dan 69,92%. Efisiensi pengeringan mengalami penurunan, dengan efisiensi 30 menit sebesar 26,99% dan efisiensi 240 menit sebesar 14,28%.
Variasi Fungsi Penerapan Ekoenzim dari Limbah Organik: Tinjauan Literatur Muhammad Daffa Fadlurrahman; Martha Aznury
JURNAL SELULOSA Vol 12, No 02 (2022): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25269/jsel.v12i02.373

Abstract

Various Application of Eco-enzymes from Organic Waste: A ReviewAbstractRecycling is an effective waste-handling method to utilize. One of the products of the process of recycling is eco-enzymes. Eco-enzymes is a fermented liquids from mixed organic waste and molasses. The eco-enzymes fermentation process usually takes 90 days or more to produce the optimal number of enzymes. In our daily life, eco-enzymes could be used for various applications. Eco-enzyme’s abilities to reduce various impurities in water makes eco-enzymes an alternative water purification. Aside from being a water purification, eco-enzymes can also be used as hand sanitizers and disinfectants because they have bactericidal properties. Ecoenzymes can also be used as fertilizers and soil conditioners because they contain high levels of nitrogen, phosphorus, potassium, and so many other benefits.Keywords: eco-enzymes, function, applicationAbstrakDaur ulang merupakan metode penanganan sampah yang efektif untuk digunakan. Salah satu produk dari proses daur ulang ialah ekoenzim. Ekoenzim merupakan cairan hasil fermentasi dari limbah organik dan molase. Proses fermentasi ekoenzim biasanya sekitar 90 hari atau lebih untuk menghasilkan enzim yang optimal. Dalam kehidupan sehari-hari, ekoenzim dapat dimanfaatkan untuk berbagai hal. Kemampuan ekoenzim mengurai berbagai unsur pengotor air menjadikan ekoenzim sebagai salah satu alternatif media penjernih air. Selain sebagai media penjernih air, ekoenzim juga dapat dimanfaatkan sebagai panyanitasi tangan (hand sanitizer) dan disinfektan karena memiliki sifat bakterisid. Ekoenzim juga dapat dimanfaatkan sebagai pupuk dan pembenah tanah karena mengandung nitrogen, fosfor, dan kalium yang cukup tinggi serta masih banyak manfaat lainnya.Kata Kunci: ekoenzim, fungsi, penerapan 
Crude Palm Oil Dikatalisis Enzim Lipase Amobil dengan Pengaruh Waktu Reaksi Menggunakan Packed Bed Reactor Revi Indira Shafika; Martha Aznury; Indah Purnamasari
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Biodiesel is an alternative fuel based on renewable energy sources. Generally, chemical processes such as transesterification and esterification are used to produce biodiesel. The biodiesel process using lipase enzyme as a catalyst has the advantage of specific activity and easy separation due to catalyst heterogeneity. Considering the high price of the enzyme, immobilization in the matrix is carried out using cationic resin. The purpose of this study was to determine the effect of reaction time on the activation of immobilized lipase enzyme catalyst on biodiesel produced using packed bed reactor and to obtain optimum biodiesel product characteristics with variations of reaction time on viscosity, density, %yield, iodine number, saponification number, cetane number, biodiesel acid number, total glycerol, methyl ester content and flash point. This research obtained the highest %yield of 86.35%, density of 878 Kg/m3, viscosity of 4.39 cSt, cetane number 68.65, saponification of 144.58 mg KOH/g, acid number 0.47 mg KOH/g, iodine number 68.53 g I2/100g, total glycerol 0.19%, methyl ester 97.31% and flash point 101°C. From the ratio of oil and methanol 1:10, which meets the quality requirements of SNI 7182:2015.
Pemberdayaan Kelompok Wanita Tani Prabumulih melalui Workshop Studi Kelayakan Bisnis: Pengabdian Marieska Lupikawaty; Neneng Miskiyah; Martha Aznury; Anerasari Meidinariasty
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 4 No. 1 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 4 Nomor 1 (Juli 2025 -
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v4i1.2277

Abstract

This community service program empowered the Kemuning Women Farmers Group (KWT) in Prabumulih through a Business Feasibility Study Workshop to address managerial challenges and enhance business sustainability. A participatory approach was applied to build technical capacity in five areas: (1) basic financial management, (2) digital marketing strategies using WhatsApp, (3) optimizing limited land production through recycled hydroponics and tiered polybag cultivation, (4) human resource management based on skill mapping, and (5) structured risk mitigation. Collaboration among PT Pertamina EP Prabumulih Field, Sriwijaya State Polytechnic, and the local government was key to success. Outputs included operational documents and behavioral changes in business management. Evaluation showed improved KWT capacity in financial feasibility, production efficiency, and risk readiness, transforming the business model from subsistence to sustainable women’s agripreneurship.
Pengaruh Konsentrasi CPO dan Garam terhadap Karakteristik Keju Vegan Berbasis Kacang Hijau (Vigna Radiata L.) melalui Fermentasi Lactobacillus Bulgaricus dan Streptococcus Lactis Adelia Anggreini; Martha Aznury; Adi Syakdani
JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI Vol. 4 No. 4 (2026): Oktober : Jurnal Ilmiah Teknik Industri dan Inovasi
Publisher : CV. ALIM'SPUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jisi.v4i4.2637

Abstract

Vegan cheese is an alternative to plant-based foods that is increasingly in demand, but its availability is still limited. Green beans have the potential to be a raw material because they have a protein content of around 22% and prebiotic properties, but they are low in fat so that the addition of vegetable fats in the form of CPO is required. This study aims to examine the effect of the concentration of CPO (0%, 2%, 4%, 6%, 8%) and salt (1%, 1.5%, 2%, 2.5%, 3%) on the chemical characteristics of green bean-based vegan cheese. The study used a factorial RAL of 5×5 with three repeats. The manufacturing process includes making mung bean milk, pasteurization, CPO processing, and fermentation at a temperature of 26°C for 10 hours using 15% inoculum. The parameters analyzed included moisture content, ash, protein, fat, and pH. The results showed that increasing CPO lowered water and protein content and increased fat content, while increasing salt increased ash content and lowered moisture content. Formulas A1 (0% CPO, 1% salt) and A2 (0% CPO, 1.5% salt) meet all SNI 2980:2018 parameters. Formula A1 produces 40.67% moisture, 0.84% ash, 20.02% protein, 25.56% fat, and pH 4.74, while A2 produces 40.65% moisture, 0.97% ash, 19.96% protein, 25.62% fat, and pH 4.77. The addition of CPO starting at 2% causes protein content to be below the SNI minimum limit.
EKSTRAKSI SILIKA GEL DARI GEOTHERMAL BRINE PLTP LUMUT BALAI MENGGUNAKAN METODE PRESIPITASI KIMIA (SOL-GEL) PADA WAKTU REAKSI TETAP Satria Ridho Illahi; Martha Aznury; Dilia Puspa; Akbar Ramadhan; Isnandar Yunanto; Siti Chodijah
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 6 (2025): Chemical Engineering Journal Storage (CEJS)-December 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i06.24321

Abstract

Geothermal brine merupakan limbah cair dari pembangkit listrik tenaga panas bumi yang mengandung silika dalam jumlah tinggi. Kandungan silika ini berpotensi dimanfaatkan sebagai bahan baku silika gel bernilai ekonomi. Penelitian ini bertujuan untuk mengekstraksi silika gel dari geothermal brine PLTP Lumut Balai menggunakan metode presipitasi kimia (sol-gel) dengan waktu reaksi tetap 30 menit. Proses diawali dengan penambahan larutan NaOH pada konsentrasi 1,25%, 1,50%, 1,75%, dan 2,00% untuk melarutkan silika menjadi natrium silikat, diikuti dengan penambahan HCl hingga terbentuk gel. Produk dikeringkan dan dikarakterisasi meliputi kadar air, kapasitas adsorpsi air, pH, dan komposisi kimia. Hasil terbaik diperoleh pada konsentrasi 2,00% dengan kadar air 1,33%, kapasitas adsorpsi air 25,4%, pH netral (6), dan kandungan SiO₂ sebesar 89,57%. Metode sol-gel terbukti efektif dalam mengekstraksi silika gel dari limbah geothermal brine.
Co-Authors Adelia Anggreini Ahmad Zikri Akbar Ramadhan Anerasari Meidinariasty Chintia Oktariyensi Dilia Puspa Indah Purnamasari Isnandar Yunanto Marieska Lupikawaty Marieska Lupikawaty Miskiyah, Neneng Muhammad Daffa Fadlurrahman Muhammad Delika Maulidi Mustain Revi Indira Shafika Rizki Nurjanah Robert Junaidi Robiansyah Safaruddin Satria Ridho Illahi Selastia Yuliati Siti Chodijah Syakdani, Adi