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<![CDATA[PELATIHAN PEMBUATAN PROCESS FLOW DIAGRAM (PFD) MENGGUNAKAN APLIKASI VISIO DI SMKN 8 BANDAR LAMPUNG ]]>
<![CDATA[Yeni Ria Wulandari]]>;
<![CDATA[Yeni Variyana]]>;
<![CDATA[Dedi Teguh]]>;
<![CDATA[Amelia Sri Rezki]]>;
<![CDATA[Fadian Farisan Silmi]]>;
<![CDATA[Dewi Ermaya]]>;
<![CDATA[Shintawati Shintawati]]>;
<![CDATA[Andika Wahyu Purnama]]>
<![CDATA[ SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 1 (2023): March ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Mataram ]]>
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DOI: 10.31764/jpmb.v7i1.13512
<![CDATA[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.]]>
<![CDATA[Extraction of Vegetable Oil from Candlenut Seeds (Aleurites Moluccana L. Willd.) Using the Microwave Hydrodiffusion and Gravity (MHG) Method ]]>
<![CDATA[Yeni Variyana]]>;
<![CDATA[Amelia Sri Rezki]]>;
<![CDATA[Dewi Ermaya]]>;
<![CDATA[Mahfud Mahfud]]>
<![CDATA[ Journal of Chemical Process Engineering Vol 8, No 1 (2023) ]]>
Publisher : <![CDATA[Universitas Muslim Indonesia ]]>
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DOI: 10.33536/jcpe.v8i1.1555
<![CDATA[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]]>
<![CDATA[Extraction of Java Lemongrass (Cymbopogon citratus) Using Microwave-Assisted Hydro Distillation in Pilot Scale: Parametric Study and Modelling ]]>
<![CDATA[Yeni Variyana]]>;
<![CDATA[Zuhdi Ma'sum]]>;
<![CDATA[Donny Satria Bhuana]]>;
<![CDATA[Mahfud Mahfud]]>
<![CDATA[ ASEAN Journal of Chemical Engineering Vol 23, No 2 (2023) ]]>
Publisher : <![CDATA[Department of Chemical Engineering, Universitas Gadjah Mada ]]>
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DOI: 10.22146/ajche.79220
<![CDATA[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%).]]>
<![CDATA[Pengolahan Kelapa Menjadi Virgin Coconut Oil (VCO) dengan Metode Fermentasi Sederhana ]]>
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Yunita Fahni]]>;
<![CDATA[Reni Yuniarti]]>;
<![CDATA[Feerzet Achmad]]>;
<![CDATA[Deviany Deviany]]>;
<![CDATA[Yeni Variyana]]>
<![CDATA[ Journal of Industrial Community Empowerment Vol 2, No 2 (2023): Published in October 2023 ]]>
Publisher : <![CDATA[Politeknik ATI Padang ]]>
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DOI: 10.52759/jice.v2i2.215
<![CDATA[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.]]>
<![CDATA[KINETIC ANALYSIS OF PHOSPHATE ADSORPTION ON ZEOLITE AND ACTIVATED CARBON IN GREYWATER ]]>
<![CDATA[Devy Cendekia]]>;
<![CDATA[Dian Ayu Afifah]]>;
<![CDATA[Yeni Variyana]]>;
<![CDATA[Evita Karlina]]>
<![CDATA[ Jurnal Inovasi Teknik Kimia Vol 9, No 1 (2024) ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Wahid Hasyim ]]>
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DOI: 10.31942/inteka.v9i1.8896
<![CDATA[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.]]>
<![CDATA[Extraction of natural dyes from tarum leaves (Indigofera Tinctoria L.) using the Ultrasound-Assisted Extraction (UAE) method ]]>
<![CDATA[Yeni Variyana]]>;
<![CDATA[Livia Rhea Alvita]]>;
<![CDATA[Najlaa Ariibah Meutia]]>;
<![CDATA[Aphrodita Luthfania Eka Putri]]>;
<![CDATA[M. Mahfud]]>
<![CDATA[ Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia ]]>
Publisher : <![CDATA[Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM) ]]>
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DOI: 10.36706/jtk.v30i1.1604
<![CDATA[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.]]>
<![CDATA[Mini Review: Hubungan Mikrobiom Usus Dengan Kesehatan Manusia ]]>
<![CDATA[Fitria, Murni]]>;
<![CDATA[Saputra, Anggi]]>;
<![CDATA[Variyana, Yeni]]>
<![CDATA[ JFM (Jurnal Farmasi Malahayati) Vol 7, No 2 (2024) ]]>
Publisher : <![CDATA[Jurnal Farmasi Malahayati (JFM) ]]>
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DOI: 10.33024/jfm.v7i2.14348
<![CDATA[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. ]]>
<![CDATA[Stabilitas Zeolit HY Hidrofobik terhadap Uji Hot Liquid Water (HLW) ]]>
<![CDATA[Susanti, Yuni]]>;
<![CDATA[Variyana, Yeni]]>
<![CDATA[ Jurnal Teknik Kimia USU Vol. 10 No. 2 (2021): Jurnal Teknik Kimia USU ]]>
Publisher : <![CDATA[Talenta Publisher (Universitas Sumatera Utara) ]]>
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DOI: 10.32734/jtk.v10i2.6250
<![CDATA[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.]]>
<![CDATA[Stabilitas Zeolit HY Hidrofobik terhadap Uji Hot Liquid Water (HLW) ]]>
<![CDATA[Susanti, Yuni]]>;
<![CDATA[Variyana, Yeni]]>
<![CDATA[ Jurnal Teknik Kimia USU Vol. 10 No. 2 (2021): Jurnal Teknik Kimia USU ]]>
Publisher : <![CDATA[Talenta Publisher (Universitas Sumatera Utara) ]]>
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DOI: 10.32734/jtk.v10i2.6250
<![CDATA[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.]]>
<![CDATA[PENGARUH WAKTU DAN SUHU MASERASI TERHADAP STRENGTH GEL KARAGINAN Eucheuma Cottonii DENGAN NaOH SEBAGAI PELARUT ]]>
<![CDATA[Setyorini, Dwi]]>;
<![CDATA[Syafaatullah, Achmad Qodim]]>;
<![CDATA[Variyana, Yeni]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA MINERAL Vol 1 No 2 (2022): JURNAL TEKNOLOGI KIMIA MINERAL ]]>
Publisher : <![CDATA[Politeknik ATI Makassaar ]]>
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DOI: 10.61844/jtkm.v1i2.268
<![CDATA[Eucheuma cottonii merupakan salah satu jenis rumput laut yang paling banyak diproduksi di Indonesia. Tingginya angka penjualan rumput laut Eucheuma cottonii dalam bentuk bahan mentah, mengakibatkan diperlukannya pengolahan lebih lanjut untuk meningkatkan nilai jualnya. Salah satu produk rumput laut yang diminati yaitu karaginan yang dapat dimanfaatkan oleh industry pangan maupun non pangan karena dapat digunakan sebagai penstabil, pengemulsi, maupun gelatasi. Untuk mendapatkan karaginan, perlu dilakukan proses lanjutan yaitu ekstraksi. Terdapat berbagai jenis metode ekstraksi salah satunya yaitu maserasi (perendaman). Sebelum dilakukan maserasi, rumput laut sebaiknya dibersihkan dari kotoran – kotoran yang menempel untuk menghindari adanya kontaminasi sekaligus meningkatkan nilai kualitasnya. Solvent yang digunakan untuk proses maserasi sebaiknya merupakan solvent yang bersifat alkali, salah satunya yaitu NaOH. Waktu maserasi yang digunakan dalam penelitian ini yaitu selama 1 jam, 2 jam dan 3 jam. Sedangkan variasi suhu yang digunakan yaitu 60oC, 70oC dan 80oC. Hasil maserasi selanjutnya dikeringkan dan direduksi ukurannya. Untuk mengetahui kualitas dari karaginan yang dihasilkan, maka dilakukan Analisa viskositas dan strength gel. Dari penelitian ini dapat diketahui bahwa nilai strength gel akan berbanding terbalik dengan viskositas. Karaginan dengan mutu terbaik, dihasilkan melalui proses maserasi menggunakan NaOH pada suhu 70oC selama 1 jam dengan nilai strength gel nya sebesar 575 gr/cm2 dan viskositasnya 227 cp.]]>
