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All Journal Jurnal Teknik Kimia USU Jurnal Teknik ITS IPTEK The Journal for Technology and Science CHEMICA Jurnal Teknik Kimia Journal Of Chemical Process Engineering (JCPE) Journal of Research and Technology JRST (Jurnal Riset Sains dan Teknologi) Indonesian Journal of Pure and Applied Chemistry SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Angkasa: Jurnal Ilmiah Bidang Teknologi International Journal of Natural Science and Engineering Indonesian Journal of Chemical Analysis (IJCA) JFM (Jurnal Farmasi Malahayati) Jurnal Teknik Kimia Jurnal Inovasi Teknik Kimia ASEAN Journal of Chemical Engineering Equilibrium Journal of Chemical Engineering Jurnal Teknik Kimia USU Journal of Applied Agricultural Science and Technology Journal of Industrial Community Empowerment Jurnal Pengabdian Pada Masyarakat Jurnal Teknologi Kimia Mineral Journal Of Chemical Process Engineering Jurnal abimana (Jurnal Pengabdian Kepada Masyarakat Nasional)
Variyana, Yeni
Program Studi Teknologi Rekayasa Kimia Industri Politeknik Negeri Lampung
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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.
Response Surface Methodology-Based Parameter Optimization of Candlenut Seeds Extraction (Aleurites moluccana Willd) Yeni Variyana; Dewi Ermaya; Shintawati Shintawati; Devy Cendekia; Mahfud Mahfud
Equilibrium Journal of Chemical Engineering Vol 7, No 1 (2023): Volume 7, No 1 July 2023
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v7i1.72842

Abstract

Abstract.  Aleurites moluccana Willd, known candlenut plant, has the potential to be used for vegetable oil, pharmacological purposes, and biofuel. However, there is a lack of knowledge on the optimal extraction conditions for this extraction. The current study aimed to use response surface methodology (RSM) to optimize the Microwave Hydrodiffusion Gravity (MHG) conditions for extraction yield. A three-factor-three-level Box-Behnken design (BBD) was used to investigate the effects of three independent parameters: material size (A), microwave power (B), and extraction time (C). The experimental data for the candlenut seed extraction were analyzed to obtain quadratic polynomial equations. The effects of various parameters on the yield of extraction yield were then examined and analyzed using plots and contours.The results showing extraction yield significantly influenced all independent parameters were p < 0.0001.  Further, The study predicted the optimum conditions for extracting candlenut seeds, which included using material size in 1.378 cm, microwave power of 599.359 W, and extraction time 66.076 min, resulted yield of 5.015%. Based on experimental data conditions, the highest extraction yield was 5.5% of 1 cm, 600 W, and 60 min, respectively, which were in good agreement with the predicted model. The study concluded that the optimized MHG method could be useful in industrial extraction processes and the use of statistical method can optimize the extraction process and reduce the number of experiments required.Keywords:Candlenut, RSM, MHG, yield
Extraction of Vegetable Oil from Candlenut Seeds (Aleurites Moluccana L. Willd.) Using the Microwave Hydrodiffusion and Gravity (MHG) Method Yeni Variyana; Amelia Sri Rezki; Dewi Ermaya; Mahfud Mahfud
Journal of Chemical Process Engineering Vol 8, No 1 (2023)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v8i1.1555

Abstract

The microwave hydriffusion gravity (MHG) method is a relatively new extraction method in order to improve the quality of oil obtained from plant materials or spices. The extraction process is carried out without involving solvents so it is safe for consumption. However, the MHG method has never been applied to the extraction of candlenut (Aleurites moluccana L) seeds. The operating conditions and variables in the research on the extraction process of Aleurites moluccana L are microwave power (300; 450; 600 W), extraction time (15-75 minutes) with 15-minute intervals, material size (1;2;3 cm), mass of raw material 100 gr, and atmospheric pressure. Material treatment consisted of 3 types of material conditions including seed material which had been roasted for 10 minutes over low heat, seed material which had been in the oven for 45 minutes, and seed material which had been without pretreatment. The results of the oil extract were analyzed using GC-MS to identify the components of the constituent compounds. Then, evaluating the mathematical modeling of the extraction process is based on first and second order kinetics. Roasted material showed the highest yield with material size parameter in 1 cm, microwave power of 600 W, and extraction time at 30 minutes, produced 5.55% (%w/w). Furthermore, the pyrazine component (36.814%) is the largest compound from the extraction of Aleurites moluccana. The first-order kinetic model has a regression that is close to the experiment with (R2 = 0.9453). Modeling quality is also supported by a very small total sum of squares (SST) value of 6,44E10-4. Therefore, the MHG method is quite effective in producing Aleurites moluccana oil with better quantity and quality
Extraction of Java Lemongrass (Cymbopogon citratus) Using Microwave-Assisted Hydro Distillation in Pilot Scale: Parametric Study and Modelling Yeni Variyana; Zuhdi Ma&#039;sum; Donny Satria Bhuana; Mahfud Mahfud
ASEAN Journal of Chemical Engineering Vol 23, No 2 (2023)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.79220

Abstract

This study aims to extract oil from Java lemongrass (Cymbopogon citratus) using the pilot-scale Microwave-Assisted Hydro distillation method (distiller volume 10,000 mL). The operating variables of this research are the extraction time, the microwave power, and the ratio of the mass of the material to the solvent (F/S ratio). The results showed an increase in the yield of lemongrass oil along with the increase in extraction time using the Microwave-Assisted Hydro distillation (MAHD) method, and this trend will continue to occur as microwave heating is selective and volumetric. Thus, there is a tendency to increase yield with increasing power. In general, it follows that the higher the power, the higher the yield. The energy received by the material to be converted into heat has caused the essential oil yield to be more abundant, with the highest yield being obtained at 800 W. The increase in the material to solvent ratio increased the oil yield up to a certain point. However, the yield started declining after the F/S ratio of 0.08 was reached. The first order kinetic model well represents the extraction process at a pilot scale. The pilot scale's oil yield is slightly lower than the laboratory scale MAHD. Compositional analysis of the result suggests that the main components of Java lemongrass oil are Geranial (30.06%), Z-Citral (25.88%), Eugenol (12.88%), and Beta-Myrcene (12.84%).
Pengolahan Kelapa Menjadi Virgin Coconut Oil (VCO) dengan Metode Fermentasi Sederhana Dennis Farina Nury; Yunita Fahni; Reni Yuniarti; Feerzet Achmad; Deviany Deviany; Yeni Variyana
Journal of Industrial Community Empowerment Vol 2, No 2 (2023): Published in October 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i2.215

Abstract

Coconut plant is frequently referred to as the plant of life since every part of it may be utilized and turned into a product. One of the commercial processed product by coconut is virgin coconut oil (VCO), which has many benefits to health properties. VCO is extracted from coconut milk from coconut fresh. The introduction of virgin oil (VCO) to partners aimed about VCO's advantages and development of appropriate technology that can be applied to local communities in Negeri Katon, Lampung Selatan. This community service activity program introduced fermentation method using yeast to convert coconut milk into VCO. The activity were conducted in three steps: i.e presentation of VCO process production and discussion, demonstration of making VCO together, and evaluation based on pre and post-test form results. Several analysis have been conducted including the percentage yield, density, viscosity and pH of the VCO. The evaluation of this activity was obtained from pre and post-test results. The results of the pre-test showed that among 50% the people of Negeri Katon really needs to the activity of making VCO by fermentation together. Based on the highest post-test result of 91%, it can be concluded that the VCO-making activities are very useful. Further development of activities, such as intensive practice in making VCO and training in packaging and selling VCO is very needed. Based on the results obtained, it can be concluded that the activity of making VCO by fermentation for the community of Negeri Katon is very necessary to be carried out in terms of utilizing coconut into VCO and creating business opportunities for the future.
KINETIC ANALYSIS OF PHOSPHATE ADSORPTION ON ZEOLITE AND ACTIVATED CARBON IN GREYWATER Devy Cendekia; Dian Ayu Afifah; Yeni Variyana; Evita Karlina
Jurnal Inovasi Teknik Kimia Vol 9, No 1 (2024)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v9i1.8896

Abstract

Phosphate is one of the pollutants that exist in greywater. Phosphate pollutant comes from surfactants used in detergent products which are commonly used in household activities. Water phosphate will increase when detergent waste is not managed properly. The presence of phosphate in waters can result in eutrophication which disrupts aquatic life. Some natural adsorbents such as zeolite and activated carbon can adsorb phosphate in greywater. The effectiveness of an adsorbent in removing phosphate in greywater can be analyzed based on the adsorption capacity and adsorption rate. In this research, it is known that zeolite is more effective as an adsorbent in removing phosphate content in greywater. Zeolite and activated carbon follow the Freundilch adsorption mechanism in the adsorption of phosphate in water. Zeolite can adsorb 41.154% with a contact time of 40 minutes, with a Freundilch constant (Kf ) = 8.10 L g-1 and an adsorption rate of K = 0.0038 m-1. For activated carbon it can adsorb 23.330 % with a contact time of 40 minutes, with a Freundilch constant (Kf ) = 1.99 L g-1 and an adsorption rate of K = 0.0013 m-1. Based on these data, activated carbon has a faster phosphate adsorption rate than zeolite, but has a smaller adsorption capacity value than zeolite. So that the zeolite can absorb more phosphate in greywater, with an adsorption rate of 0.0038 per minute.
Extraction of natural dyes from tarum leaves (Indigofera Tinctoria L.) using the Ultrasound-Assisted Extraction (UAE) method Yeni Variyana; Livia Rhea Alvita; Najlaa Ariibah Meutia; Aphrodita Luthfania Eka Putri; M. Mahfud
Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i1.1604

Abstract

The rapid development of the textile industry has led to increased use of synthetic dyes. Although synthetic dyes are more practical and economical, their use can have adverse effects on health and the environment. Natural dyes are utilized as alternatives with indigo leaves (Indigofera tinctoria L.) being one source known for producing a blue color. However, the commonly used extraction methods require long extraction times and significant solvent consumption. Given the limitations of current methods, innovation is needed for an efficient extraction method that produces safe and environmentally friendly natural dyes, one of which is ultrasound-assisted extraction (UAE). Therefore, this study aims to determine the extraction process of indigo leaves using UAE method, then identify the parameters influencing the extraction process using the UAE, determine the extraction yield using UAE, assess the dyeing results of the extracted dye from indigo leaves on cotton fabric, and compare the extraction results of indigo dye through the UAE method with the addition of CaO and NaOH solutions. The results of this study indicate that the natural dye from Indigofera tinctoria obtained the best conditions at extraction time of 90 min, feed-to-solvent ratio of 0.05 g/ml, and CaO-to-solvent ratio of 0.005 g/ml. Furthermore, the addition of CaO solution obtained the highest yield at 4.25 %, while the addition of NaOH solution resulted in 4.8 %. Additionally, the analysis and test results of the application of natural dye from Indigofera tinctoria on cotton fabric revealed a darker color with the addition of NaOH solution compared to the addition of CaO solution.
Mini Review: Hubungan Mikrobiom Usus Dengan Kesehatan Manusia Fitria, Murni; Saputra, Anggi; Variyana, Yeni
JFM (Jurnal Farmasi Malahayati) Vol 7, No 2 (2024)
Publisher : Jurnal Farmasi Malahayati (JFM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jfm.v7i2.14348

Abstract

Mikrobioma usus manusia, sebuah ekosistem kompleks yang terdiri dari jutaan mikroorganisme, telah menjadi fokus penelitian yang signifikan dalam konteks kesehatan manusia. Studi-studi terbaru menunjukkan bahwa komposisi mikrobioma usus dapat mempengaruhi kesehatan secara keseluruhan, termasuk dalam konteks kondisi neuropsikiatrik seperti autisme dan depresi, serta penyakit kardiovaskular. Hubungan antara mikrobioma usus dengan autisme, misalnya, menunjukkan adanya perbedaan dalam kelimpahan bakteri tertentu pada anak-anak dengan autisme dibandingkan dengan yang sehat. Selain itu, gangguan keseimbangan mikroorganisme dalam usus atau disbiosis telah dikaitkan dengan berbagai masalah kesehatan, termasuk penyakit jantung. Metode analisis berupa Next Generation Sequencing (NGS), telah memungkinkan peneliti untuk memahami komposisi mikrobioma usus dan interaksinya dengan kesehatan manusia. Semenatar itu, penggunaan probiotik dan prebiotik berpotensi menangani masalah Kesehatan dengan cara memperbaiki keseimbangan mikrobioma usus. Penelitian lebih lanjut diperlukan untuk memahami lebih dalam hubungan antara mikrobioma usus dan kesehatan manusia, serta potensi terapi probiotik dan prebiotik dalam mengatasi masalah kesehatan yang berkaitan dengan ketidakseimbangan mikrobioma usus. 
Stabilitas Zeolit HY Hidrofobik terhadap Uji Hot Liquid Water (HLW) Susanti, Yuni; Variyana, Yeni
Jurnal Teknik Kimia USU Vol. 10 No. 2 (2021): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v10i2.6250

Abstract

Initially, zeolite catalysts cannot be used for reactions involving hot liquid water, so it is necessary to modify the zeolite to be stable under these conditions. The synthesis of HY and hydrophobic zeolites aimed to determine the stability of zeolite in hot liquid water (HLW). The stability of zeolite in HLW is related to zeolite hydrophobicity. In this study, the main raw materials for the synthesis of HY zeolite were sodium aluminate (NaAlO2) and Ludox HS-40 by calcining the product at 350 oC for 1 hour. Furthermore, increasing the hydrophobicity of HY zeolite was carried out by modifying the external zeolite surface using organosilanes (aminopropyltriethoxysilane). The stability of two zeolites in HLW was set at 200 oC. Zeolite analysis used physical test and Fourier Transform-Infra Red (FTIR) Spectrometer. The results of the zeolite distribution in two phases confirmed that HY zeolite was completely dispersed in the water phase, while the zeolite one was dispersed in the organic phase. Moreover, the IR spectra of HY zeolite showed that the wide peak detection at wave number 720 cm-1 for beginning to disappear. This means that the HLW condition could be damaged to the d6r unit. Another result was shown by hydrophobic zeolite spectra with a stable peak for 72 hours. This indicates that the hydrophobic zeolite has thermal stability in HLW so that it can be used in chemical reaction catalytic applications that use on phase.
Stabilitas Zeolit HY Hidrofobik terhadap Uji Hot Liquid Water (HLW) Susanti, Yuni; Variyana, Yeni
Jurnal Teknik Kimia USU Vol. 10 No. 2 (2021): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (296.486 KB) | DOI: 10.32734/jtk.v10i2.6250

Abstract

Initially, zeolite catalysts cannot be used for reactions involving hot liquid water, so it is necessary to modify the zeolite to be stable under these conditions. The synthesis of HY and hydrophobic zeolites aimed to determine the stability of zeolite in hot liquid water (HLW). The stability of zeolite in HLW is related to zeolite hydrophobicity. In this study, the main raw materials for the synthesis of HY zeolite were sodium aluminate (NaAlO2) and Ludox HS-40 by calcining the product at 350 oC for 1 hour. Furthermore, increasing the hydrophobicity of HY zeolite was carried out by modifying the external zeolite surface using organosilanes (aminopropyltriethoxysilane). The stability of two zeolites in HLW was set at 200 oC. Zeolite analysis used physical test and Fourier Transform-Infra Red (FTIR) Spectrometer. The results of the zeolite distribution in two phases confirmed that HY zeolite was completely dispersed in the water phase, while the zeolite one was dispersed in the organic phase. Moreover, the IR spectra of HY zeolite showed that the wide peak detection at wave number 720 cm-1 for beginning to disappear. This means that the HLW condition could be damaged to the d6r unit. Another result was shown by hydrophobic zeolite spectra with a stable peak for 72 hours. This indicates that the hydrophobic zeolite has thermal stability in HLW so that it can be used in chemical reaction catalytic applications that use on phase.
Co-Authors Achmad Qodim Syafaatullah Afifah, Dian Ayu Agus Triono Amelia Sri Rezki Andika Wahyu Purnama anggi saputra Aphrodita Luthfania Eka Putri Arga Bayramadhan Arga Bayramadhan Ariski Putra, Feby Ayu Qurota A’yun Bayramadhan, Arga Dedi Teguh Dennis Farina Nury Deviany Deviany Devy Cendekia Devy Cendekia Dewi Ermaya Dewi Ermaya Dewi Ermaya Dewi Ermaya Dian Ayu Afifah Donny Satria Bhuana Dwi Setyorini Elsyana, Vida Evita Karlina Fadian Farisan Silmi Fahni, Yunita Feerzet Achmad Fitria, Murni Gelegar, Iyappateya Hanifah, Windia Iid Mufaidah Indradewa, Rhian Iyappateya Gelegar Kurniawan, Dodi Kurniawan, Lukman Haris Livia Rhea Alvita Lukman Haris Kurniawan Lutvianto Pebri Handoko M. Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mega Arum Ariyani Mochamad Asrofi Muhammad Zulfikar Luthfi Muslimin Nasution Muslimin Nasution Najlaa Ariibah Meutia Nasution, Muslimin Ni&#039;matur Rohmah Ni’matur Rohmah Ni’matur Rohmah Ni’matur Rohmah Nugroho, Muhammad Erwin Cahyo Nurwijayanti Panjaitan , Renova R. A. Ilyas Reni Yuniarti Rezki, Amelia Sri Rhea Alvita, Livia Rohmah, Ni'matur Satria, Muh. Nova Setyo Pambudi Shintawati Shintawati Shintawati Shintawati Shintawati Shintawati Shintawati Syafaatullah, Achmad Qodim Teguh, Dedi Yuni Susanti Yuni Susanti Yunita Fahni Zuhdi Ma&#039;sum