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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan JURNAL KIMIA SAINS DAN APLIKASI Journal of Natural Sciences and Mathematics Research Jurnal Sains & Teknologi Lingkungan Jurnal Penelitian Pertanian Terapan Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Indonesian Journal of Pure and Applied Chemistry SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan CHEESA: Chemical Engineering Research Articles Angkasa: Jurnal Ilmiah Bidang Teknologi Indonesian Journal of Chemical Analysis (IJCA) Equilibrium Journal of Chemical Engineering REACTOR : Journal of Research On Chemistry And Engineering Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Jurnal Teknologi Kimia Mineral Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Rekayasa Proses Jurnal abimana (Jurnal Pengabdian Kepada Masyarakat Nasional)
Yeni Ria Wulandari
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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PELATIHAN PEMBUATAN PROCESS FLOW DIAGRAM (PFD) MENGGUNAKAN APLIKASI VISIO DI SMKN 8 BANDAR LAMPUNG Yeni Ria Wulandari; Yeni Variyana; Dedi Teguh; Amelia Sri Rezki; Fadian Farisan Silmi; Dewi Ermaya; Shintawati Shintawati; Andika Wahyu Purnama
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 1 (2023): March
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i1.13512

Abstract

ABSTRAKPengembangan pendidikan Sekolah Menengah Kejuruan (SMK) di Indonesia harus diarahkan untuk beradaptasi dengan dinamika global dan nasional khususnya terhadap Revolusi Industri 4.0. Berdasarkan penerapan Kurikulum Merdeka, program keahlian yang ada di SMK Negeri 8 Bandar Lampung salah satunya adalah Teknik Kimia Industri dengan peserta sebanyak 25 orang. Adapun tujuan dari kegiatan pengabdian kepada masyarakat (PKM) yaitu memberikan pelatihan desain process flow diagram (PFD) menggunakan microsoft visio kepada siswa jurusan teknik kimia di SMKN 8 Bandar Lampung. Pengetahuan, keterampilan, dan pengalaman dalam merancang proses pabrik secara sederhana maupun kompleks sangat diperlukan di dunia industri, khususnya bidang keahlian teknik kimia. Dari hasil pelatihan, seluruh peserta sangat antusias dan dapat menyelesaikan desain PFD hingga selesai serta beberapa siswa aktif bertanya terkait materi yang diberikan. Para peserta dengan persentase 98% menyatakan bahwa adanya peningkatan pengetahuan dan keterampilan terkait pembuatan proses industri fermentasi melalui PFD. Kegiatan ini diharapkan dapat menambah keterampilan siswa jurusan teknik kimia SMKN 8 Bandar Lampung agar siap menjadi sumber daya manusia (SDM) unggul. Kata kunci: PKM; microsoft visio; PFD. ABSTRACTThe development of Vocational High School education in Indonesia must be directed to adapt to global and national dynamics, especially to the Industrial Revolution 4.0. Based on the implementation of the Merdeka Curriculum, one of the expertise programs in SMK Negeri 8 Bandar Lampung is Industrial Chemical Engineering with 25 participants. The purpose of this community service activity (PKM) is to provide process flow diagram (PFD) design training using microsoft visio to students majoring in chemical engineering at SMKN 8 Bandar Lampung. The knowledge, skills, and experience in designing simple and complex plant processes are needed in the industrial world, especially in the field of chemical engineering expertise. From the results of the training, all participants were very enthusiastic and were able to complete the PFD design to completion and some students actively asked questions regarding the material provided. The participants with a percentage of 98% stated there was an increase in knowledge and skills related to making industrial fermentation processes through PFD. This activity is expected to increase the skills of students majoring in chemical engineering at SMKN 8 Bandar Lampung so that they are ready to become excellent human resources (HR). Keywords: PKM; microsoft visio; PFD.
Pengaruh Konsentrasi Karbon Disulfida (Cs2) Terhadap Kinerja Biosorben Selulosa Xanthate Untuk Penjerapan Logam Berat Nita Pita Sari; Dewi Agustina Iryani; Dedi Teguh; Yeni Ria Wulandari
Jurnal Sains & Teknologi Lingkungan Vol. 15 No. 2 (2023): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

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Abstract

Pencemaran logam berat merupakan salah satu masalah penting yang menimbulkan efek beracun. Logam berat yang terakumulasi pada tubuh manusia akan mengakibatkan berbagai resiko yang berbahaya. Mengingat bahaya yang ditimbulkan oleh logam berat, berbagai metode telah digunakan untuk menurunkan kadar logam berat. Salah satu metode yang digunakan dalam penelitian ini yaitu adsorpsi biosorben selulosa xanthate dari selulosa bagas tebu untuk menjerap logam berat Pb2+ dan Cu2+. Pembuatan biosorben dilakukan melalui proses xhantasi dengan memvariasikan konsentrasi Karbon Disulfida (CS2) yaitu 120%, 140%, dan 160% (b/b) dari jumlah bahan baku. Produk dari reaksi xhantasi selanjutnya dianalisa Derajat Substitusi (DS) dan Derajat Polimerisasi (DP) pada range 0,36−0,39 dan 301−308. Selain Uji Derajat Substitusi (DS) dan Derajat Polimerisasi (DP), karakter dari selulosa xanthate juga dilakukan analisa menggunakan SEM dan FTIR. Karakterisasi tersebut ditujukan untuk mengetahui morfologi permukaan dan perubahan gugus fungsi selulosa xanthate pada berbagai variasi konsentrasi karbon disulfida (CS2). Hasil pengujian menunjukkan bahwa karbon disulfida (CS2) tersubstitusi ke dalam gugus OH pada selulosa bagas tebu, sehingga selulosa xanthate mampu mengadsorpsi logam berat Pb2+ dan Cu2+ dengan kapasitas adsorpsi masing-masing 50,7 mg/g dan 47 mg/g pada konsentrasi Karbon Disulfida (CS2) 120%.
Product Distribution of Chemical Product Using Catalytic Depolymerization of Lignin Damayanti Damayanti; Yeni Ria Wulandari; Ho-Shing Wu
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 2 Year 2020 (August 2020)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.15.2.7249.432-453

Abstract

Lignin depolymerization is a very promising process which can generate value-added products from lignin raw materials. The main objective of lignin depolymerization is to convert the complex molecules of lignin into small molecules. Nevertheless, lignin is natural polymer which the molecules of lignin are extremely complicated due to their natural variability, and it will be a big challenge to depolymerize lignin, particularly high water yield. The various technology and methods are developed to depolymerize lignin into biofuels or bio chemical products including acid/base/metallic catalyzed lignin depolymerization, pyrolysis of lignin, hydroprocessing, and gasification. The distribution and yield of chemical products depend on the reaction operation condition, type of lignin and kind of catalyst. The reactor type, product distributions and specific chemicals (benzene, toluene, xylene, terephthalic acid) production of lignin depolymerization are intensive discussed in this review. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Optimasi Optimasi Minyak Daging Buah Pala dengan Response Surface Methodology (RSM): Optimasi Minyak Daging Buah Pala dengan Response Surface Methodology (RSM) Nirmagusitna, Dwi Eva; Putri Andini, Mutia Merry; Wulandari, Yeni Ria
Jurnal Penelitian Pertanian Terapan Vol 24 No 2 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i2.3428

Abstract

Nutmeg flesh is the largest part of the nutmeg (77.8%) and can be used to produce nutmeg oil. The purposa of study is to determine the approproate distillation temperature and time to produce optimal yield of nutmeg flesh oil, to determine variations in temperature and distillation time based on Response Surface Methodology (RSM) with the optimal percentage of nutmeg flesh oil yield and requirement SNI nutmeg oil and to determine the content chemical compound in nutmeg flesh oil. The study was conducted in two stages. The first stage, optimizing the distillation process using RSM with a Central Composite Design (CCD) design. The second stage, making nutmeg flesh oil. The best sample of nutmeg flesh oil is the distillation temperature and time (95ºC, 4.5 hours) with yield (0.73%), specific gravity (0.91 g/ml), refractive index (1.4932), and solubility in ethanol 90% (20.00%). The results of GC-MS analysis of nutmeg flesh oil showed that the myristicin content require the SNI (35.30%). The variations of distillation temperature and distillation time suggested by CCD Design is 95ºC for 5.5 hours with results, yield (0.71%), specific gravity (0.882 g/ml), refractive index (1.485), and solubility in ethanol 90% (16.67%). The results of the analysis require the quality standards of nutmeg oil (SNI 06-2388-2006).
Potensi Limbah Tandan Kosong Kelapa Sawit (TKKS) sebagai Bioenergi pada Produksi Bio-Oil dengan Metode Pirolisis: Efek Temperatur: Potential of Empty Fruit Bunches (EFB) Waste as Bioenergy to Produce Bio-Oil Using Pyrolysis Method: Temperature Effects Rezki, Amelia Sri; Wulandari, Yeni Ria; Alvita, Livia Rhea; Sari, Nita Pita
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 7 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2023.007.01.04

Abstract

Indonesia memiliki banyak sumber daya biomassa seperti limbah Tandan Kosong Kelapa Sawit (TKKS) untuk alternatif bahan bakar. Limbah padat TKKS memiliki kandungan selulosa, hemiselulosa, dan lignin yang berpotensi menghasilkan beberapa produk melalui metode pirolisis. TKKS yang digunakan dari PT. Lambang Jaya, Lampung Selatan, Indonesia. Tujuan studi ini adalah karakterisasi bio-oil yang dihasilkan dari limbah TKKS serta mengetahui faktor yang mempengaruhi produksi bio-oil. Percobaan dilakukan pada variasi temperatur 300°C, 350°C, dan 400°C, dengan biomassa TKKS berukuran 1 mm dalam reaktor pirolisis. Studi karakteristik fisika-kimia bio-oil yang diperoleh pada penelitian ini yaitu yield bio-oil, pH, densitas, viskositas, dan heating rate. Studi Karakteristik pirolisis TKKS yang diperoleh pada penelitian ini adalah yield bio-oil antara 4,32-6,49%, yield asap cair 33,03%-37,44%, yield arang 33,33%-38,35%, dan yield gas 23,53%-26,91%. Hasil pH bio-oil bersifat asam karena memiliki pH antara 3,4-3,8, densitas bio-oil 1,146-1,296 g/ml, viskositas 18,443-20,860 cP serta heating rate 4,6-6,5 °C/menit yang dikategorikan dalam jenis pirolisis lambat karena dioperasikan pada temperatur rendah dan waktu tinggal ≥ 30 menit. Pengaruh temperatur pada yield bio-oil menunjukkan semakin tinggi temperatur proses yield bio-oil yang dihasilkan semakin tinggi. Melalui studi karakteristik yang dilakukan pada pirolisis TKKS produk yang dihasilkan menarik untuk dikembangkan pemanfaatannya dengan memperhatikan parameter proses yang berpengaruh.
Pengaruh Metode Pengarangan dan Ukuran Partikel Terhadap Kualitas Briket Cangkang Kelapa Sawit: Effect of Combustion Method and Particle Size on the Quality of Palm Shell Briquettes Shintawati, Shintawati; Ermaya, Dewi; Wulandari, Yeni Ria; Sukaryana, Yana; Fernando, Riki
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 8 No. 1 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2024.008.01.03

Abstract

Salah satu sumber energi terbarukan adalah biomassa. Biomassa merupakan bahan organik yang umumnya berasal dari tanaman. Briket bioarang merupakan bahan bakar padat dan berasal dari biomassa yang diarangkan terlebih dahulu. Penelitian ini bertujuan untuk mengkaji pengaruh metode pengarangan dan ukuran partikel terhadap kualitas briket.  Penelitian ini menggunakan metode pengarangan torefaksi pada suhu 200°C, 300°C dan pengarangan manual. Ukuran partikel arang divariasikan 20 dan 40 mesh. Parameter yang uji adalah kadar air, nilai kalor, kadar karbon terikat, kadar zat menguap, kadar abu, densitas dan laju pembakaran. Hasil penelitian menunjukkan tipe pengarangan torefaksi mampu meningkatkan kualitas briket melalui peningkatan nilai kalor, kadar karbon terikat dan menurunkan  kadar air serta zat menguap serta dihasilkannya produk asap cair sebanyak 48,5%. Kualitas briket hasil pengarangan torefaksi suhu 3000°C ukuran arang 20 mesh memenuhi mutu I SNI 01-6235-2000 dengan nilai kalor, kadar air masing-masing adalah 6841 kal/g, 3,52 % dan kadar karbon terikat, zat menguap, abu, densitas serta laju pembakaran masing-masing adalah 50,06%, 37,59%,  8,13%,  1,71 g/cm3, 0,076 g/menit
Advanced oxidation processes technology using the Fenton method in Bakung landfill leachate treatment Teguh, Dedi; Cendekia, Devy; Wulandari, Yeni Ria; Putri, Cynthia Eka; Ramandani, Adityas Agung
Journal of Natural Sciences and Mathematics Research Vol. 10 No. 2 (2024): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

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Abstract

The primary issue at the Bakung final processing location was the high organic and inorganic material concentration. Toxicity, high chemical oxygen demand (COD), a black hue, and an unpleasant smell can usually identify landfill leachate; it can be hazardous if spilled directly into a body of water. Consequently, the implementation of an efficient leachate treatment was necessary. One use of this cutting-edge oxidation process technology consists of the Fenton method for treating leachate. The goals of this study involve implementing the Fenton technique to leachate treatment and ascertaining the impact of reaction time (30, 60, 90, or 120 min) and Fenton molar ratio (1:150, 1:200, or 1:250) on color degradation and chemical oxygen demand (COD). A Fenton molar ratio of 1:150 and a 120-min reaction period were ideal, resulting in maximum color and COD degradation percentages of 91.4% and 92.4%, respectively. The study's findings demonstrate how well the Fenton approach works to reduce COD and color in leachate while also meeting leachate water quality requirements for enterprises and/or ultimate waste processing operations.
PENGENALAN DAN PELATIHAN APLIKASI SUPERPRO DESIGNER KEPADA GURU SMKN 8 BANDAR LAMPUNG Fadian Farisan Silmi; Yeni Ria Wulandari; Yeni Variyana; Amelia Sri Rezki; Dedi Teguh; Dewi Ermaya; Shintawati Shintawati; Iskandar Zulkarnain
Jurnal Abimana (Jurnal Pengabdian Kepada Masyarakat Nasional) Vol 1 No 1 (2024): Mei
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/abimana.v1i1.3544

Abstract

Pelaksanaan pendidikan berpedoman pada kurikulum yang telah disusun secara sistematis dan bertahap yang diterapkan dalam proses pembelajaran. Pengembangan pendidikan Sekolah Menengah Kejuruan (SMK) di Indonesia harus diarahkan untuk beradaptasi dengan dinamika global dan nasional khususnya terhadap Revolusi Industri 4.0 saat ini, menyesuaikan dengan kebutuhan dunia kerja dengan menyempurnakan kurikulum dan mengintegrasikan dengan banyak pemangku kepentingan. SMK Negeri 8 Bandar Lampung berdiri berdasarkan Surat Keputusan Wali Kota Bandar Lampung Nomor 511/14.40/HK/2014 tanggal 11 April 2014. Kurikulum yang digunakan di SMK Negeri 8 Bandar Lampung adalah Kurikulum Merdeka. Bandar Lampung saat ini adalah terbatasnya pengetahuan dan keterampilan guru dalam pemanfaatan teknologi software engineering SuperPro Designer yang digunakan dalam bidang Teknik Kimia Industri. Padahal SMKN 8 Bandar Lampung memiliki fasilitas Laboratorium Komputer yang memadai namun belum terpasang software pendukung lanjutan Teknik Kimia khususnya aplikasi SuperPro Designer. Dengan adanya kegiatan PKM ini diharapkan fasilitas pendukung dalam proses belajar dalam hal ini aplikasi SuperPro Designer dapat meningkatkan pengetahuan dan keterampilan guru di SMKN 8 Bandar Lampung.
Pengendalian Proses Pada Katalitik Pirolisis Serabut Kelapa Sawit Dengan Menggunakan Reaktor Batch Wulandari, Yeni Ria; Rezki, Amelia Sri; Afifah, Dian Ayu; Hamdi, Rafiqul
REACTOR: Journal of Research on Chemistry and Engineering Vol 5, No 2: December 2024
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v5i2.158

Abstract

Indonesia is the largest producer of palm oil in the world. The palm oil industry always produces solid waste, one of which is palm fiber. Palm fiber can be processed into chemicals or renewable fuels. Catalytic pyrolysis is a pyrolysis process using a catalyst, the purpose of pyrolysis using a catalyst is to upgrade the product. In this study, the pyrolysis process was carried out in a batch reactor with controlled temperature. Catalytic pyrolysis was carried out at a temperature of 400oC with a catalyst to oil palm fiber ratio of 1:2. The control system uses a feedback controller system. Pyrolysis of palm fiber with Al white and NiCl (II) catalysts produces bio-oil products with the highest yield. Pyrolysis with Al2O3 catalyst produces higher Bio-char products. The density of the water phase bio-oil is close to the density of water, and the viscosity of the bio-oil with the oil phase is more than 10 Cp. Based on GC-MS analysis, the largest component in bio-oil is acetic acid. Bio-oil and Bio-char pyrolysis products have the potential as new chemicals, renewable energy and adsorbents.
Sustainable Recovery of SiO₂, Al₂O₃, and MgO from Slag, Aluminum Cans, and Bittern Sukma, Vinda Avri; Dahlan, Astryd Viandila; Sudibyo, Sudibyo; Wulandari, Yeni Ria; Ramandani, Adityas Agung
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 1 (2025): March 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i1.47-58

Abstract

This study investigates the utilization of solid waste from slag and aluminum cans as sources of valuable raw materials, along with bittern waste for magnesium oxide (MgO)cons production. Slag, a byproduct of industrial combustion in the palm oil industry, and aluminum cans, generated from human consumption in urban areas, were both subjected to leaching processes to recover silica (SiO₂) and alumina (Al₂O₃), respectively. The leaching of slag using 4 M NaOH yielded 85.68% SiO₂, while aluminum cans treated with 4 M HCl produced 85.90% Al₂O₃. Additionally, the study extracted MgO from bittern waste via precipitation, resulting in 76.98% MgO. X-ray fluorescence (XRF) analysis was employed used to determine the composition of the slag, aluminum can waste, and bittern, while X-ray diffraction (XRD) analysis confirmed the crystallinity of the recovered materials. The integration of recycled materials into the production of cordierite ceramics represents an innovative approach to waste valorization, offering potential for the development of advanced materials from industrial and urban waste. This research highlights the potential for valorizing industrial and municipal solid wastes through chemical processes, contributing to sustainable resource recovery and environmental conservation.
Co-Authors Adityas Agung Ramandani Afifah, Dian Ayu Aji, Salomo Pranata Alvita, Livia Rhea Amelia Sri Rezki Amelia Sri Rezki Andika Wahyu Purnama Cendekia, Devy Dahlan, Astryd Viandila Damayanti Damayanti Dedi Teguh Dewi Agustina Iryani Dewi Ermaya Dewi Ermaya Dewi Ermaya Dian Ayu Afifah Endang Palupi Suryaningtyas Fadian Farisan Silmi Febrina Arief Fernando, Riki Gelegar, Iyappateya Hamdi, Rafiqul Hanifah, Windia Ho-Shing Wu Kurniawan, Dodi Livia Rhea Alvita Lutfi Wahidatur Rizky Luth Hamam Muhammad Arif Firmansyah Nirmagusitna, Dwi Eva Nita Pita Sari Nurjan Didik Purwanto Nurwijayanti Oktaviani , Lahara Putri Andini, Mutia Merry Putri, Cynthia Eka Rafiqul Hamdi Ramandani, Adityas Agung Rezki, Amelia Sri Ricky Fernando Sari, Nita Pita Shintawati Shintawati Shintawati Shintawati Shintawati shintawati, shintawati Shitawati Shintawati Sri Rahayu Widyaningrum Sudibyo Sudibyo Sudibyo Sudibyo Sukma, Vinda Avri Teguh, Dedi Teguh, Dedi Tri Haryono Variyana, Yeni Vinda Avri Sukma Windia Hanifah Yana Sukaryana Yeni Variyana