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All Journal Eksergi: Chemical Engineering Journal Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Distilat: Jurnal Teknologi Separasi Jurnal Teknik Kimia dan Lingkungan Jurnal Teknologi Lingkungan Communication in Food Science and Technology TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Saputri, Desi Riana
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Religion Agriculture, Biological Sciences & Forestry Arts Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Other

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Pelatihan Inovasi Kain Tapis Krui di Pekon Way Sindi Kabupaten Pesisir Barat Achmad, Feerzet; Satria, Arysca Wisnu; Saputri, Desi Riana; Auriyani, Wika Atro; Supriyadi, Didik
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 1 No 1 (2021): TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v1i1.508

Abstract

Tapis is a traditional Indonesian woven which is produced by using a non-machine weaving loom. Tapis is an ornamental motif-based manifestation, especially for the people of Pesisir Barat's local history and beliefs. The issues that occur with Tapis weaving craftsmen are production infrastructure, minimal market availability, a lack of knowledge, and their skills for product innovation. The people of Pesisir Barat require empowerment and support to develop the knowledge and abilities of Tapis weaving craftsmen in the production of tapis derivative products. These items will support the Pesisir Barat's tourism industry succeed. This community service activity was carried out by holding coaching for the Kerudung Sakti and Kiluk Andan Tapis Crafts Group in Way Sindi Village, Karya Penggawa, Pesisir Barat district. This training is expected to improve the community's knowledge and skills in developing various souvenir products and craft accessories made from Tapis derivative products.
EVALUASI KINERJA ALAT PENUKAR PANAS 11-E-107 PADA UNIT DISTILASI MINYAK MENTAH (CDU) Alhanif, Misbahudin; Frastia, Wike; Kamil, Muhamad Idham; Kumoro, Andri Cahyo; Yusupandi, Fauzi; Utami, Esti; Saputri, Desi Riana; Fahni, Yunita
DISTILAT: Jurnal Teknologi Separasi Vol. 10 No. 2 (2024): June 2024
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v10i2.4713

Abstract

Pemanasan awal pada unit distilasi minyak mentah (CDU) berfungsi menaikkan temperatur minyak mentah sebelum masuk ruang pembakaran (furnace) untuk mengurangi beban kerja dari furnace. Pemanasan awal dilakukan dengan bantuan alat penukar panas 11-E-107. Tujuan penelitian ini adalah melakukan evaluasi alat penukar panas 11-E-107 berdasarkan parameter faktor pengotor (fouling factor, Rd), penurunan tekanan (pressure drop, ∆P), dan efisiensi. Evaluasi dilakukan melalui pengumpulan data aktual berupa laju alir dan suhu fluida panas (atmospheric residue) dan fluida dingin (desalted crude oil) selama bulan Juni 2023. Analisis hasil perhitungan dilakukan dengan membandingkan antara hasil perhitungan (Rd, ∆P, dan efisiensi) terhadap data desain. Hasil penelitian menunjukkan bahwa nilai Rd dari data aktual berkisar antara 0,0006 – 0,0014 hr.ft2.oF/Btu, lebih kecil dibandingkan data desain. Hasil analisis penurunan tekanan (∆P) pada shell dan tube berada pada rentang 0,1046 – 0,1305 dan 0,1031 – 0,1352 psi, lebih kecil dibandingkan allowable pressure drop. Efisiensi dari alat penukar panas 11-E-107 berada di antara 87,60 - 91,30%. Secara keseluruhan, kinerja alat penukar panas 11-E-107 dalam kondisi yang baik. Perawatan berkala perlu dilakukan jika efisiensi alat penukar panas berada pada nilai kurang dari 80%.
Composting of Dry Leaves and Household Kitchen Wastes Using Rotary Drum Biocomposter Auriyani, Wika Atro; Fahni, Yunita; Saputri, Desi Riana; Mawaddah, Nurul; Fajar, Mutiara; Novita, Ella; Asmarani, Wulan; Asfari Ahmad, Raden Fattah
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 6 No. 2 (2023): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v6i2.3347

Abstract

According to data from the National Waste Management Information System (SIPSN) for 2020, the largest pile of waste according to waste sources in Lampung Province comes from household waste, namely 42%. Along the Dusun II road in Way Hui Village, almost every day the community burns leaf litter in their yards, which causes pollution. In addition, according to data from the Central Statistics Agency (BPS) for 2020, agriculture in Lampung is the 15th highest, namely 90.48%. However, in its management, the majority of agriculture and plantations in Lampung use inorganic fertilizers to increase the quality and quantity of crops. This problem can be overcome by using organic waste as compost to gradually improve soil quality and reduce the volume of household kitchen waste. The Rotary Drum Biocomposter is a simple and inexpensive composter for processing kitchen and household organic waste in a sustainable manner. To speed up the composting process, a bioactivator is added as a decomposer. Bioactivators can be made by utilizing rice washing water waste and papaya fruit waste, which are rich in nutrients and can increase the macronutrients of the compost. The composting method used in this research is aerobic composting. This tool aims to educate the surrounding community that waste can be turned into valuable goods with good management, thereby creating a healthy environment and profitable business opportunities.
Analysis of Vitamin A Content and Antioxidant Test in Super and Bulk Olein Saputri, Desi Riana; Listyadevi, Yuniar Luthfia; Putra, Muhammad Alparidi Pamungkas; Adiwibowo, Muhammad Triyogo; Sanjaya, Andri; Damayanti, Damayanti; Auriyani, Wika Atro; Fahni, Yunita; Yusupandi, Fauzi; Yuniarti, Reni; Safitra, Edwin Rizki
Communication in Food Science and Technology Vol. 3 No. 2 (2024): Communication in Food Science and Technology, November Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/cfst.v3i2.1980

Abstract

Cooking oil is the essential food for bodies. Cooking oil should be enriched with vitamin A because this substance plays a critical role in maintaining health. Cooking oil contains antioxidant compounds, which inhibit or slow down oxidation reactions. This study aimed to determine the amount of vitamin A in super olein and bulk olein before fortification and the amount of antioxidant content in super olein and bulk olein before fortification. The amount of vitamin A content was obtained using the High-Performance Liquid Chromatography (HPLC) method of <0.005 IU/gram, while the antioxidant test results were carried out by the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method using UltraViolet-Visible Spectrophotometry (UV-Vis). The resulting antioxidant activity has an inhibition value of 23% and 10% in bulk and super olein, respectively. Cooking oil is the essential food for bodies. Cooking oil should be enriched with vitamin A because this substance plays a critical role in maintaining health. Cooking oil contains antioxidant compounds, which inhibit or slow down oxidation reactions. This study aimed to determine the amount of vitamin A in super olein and bulk olein before fortification and the amount of antioxidant content in super olein and bulk olein before fortification. The amount of vitamin A content was obtained using the High-Performance Liquid Chromatography (HPLC) method of <0.005 IU/gram, while the antioxidant test results were carried out by the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method using UltraViolet-Visible Spectrophotometry (UV-Vis). The resulting antioxidant activity has an inhibition value of 23% and 10% in bulk and super olein, respectively.
Alkaline Activated Natural Zeolite as a Microbial Immobilization Media in Anaerobic Digestion for Tapioca Wastewater Treatment: Zeolit Alam Teraktivasi Basa sebagai Media Imobilisasi Mikrobial di Peruraian Anaerobik untuk Pengolahan Limbah Cair Tapioka Sanjaya, Andri; Agustina, Berliana Putri; Prayoga, Ageng Kaka; Salsabila, Dwinda; Arhab, Jabir Shoji; Damayanti, Damayanti; Auriyani, Wika Atro; Fahni, Yunita; Saputri, Desi Riana
Jurnal Teknologi Lingkungan Vol. 26 No. 2 (2025)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2025.7432

Abstract

Abstrak Produksi biogas dari limbah cair singkong menawarkan sumber energi yang berkelanjutan, meskipun efisiensinya masih menjadi tantangan. Penggunaan zeolit alami sebagai media untuk mengimobilisasi bakteri anaerob menunjukkan potensi, namun efisiensi proses ini dapat lebih ditingkatkan dengan aktivasi zeolit. Namun, pengetahuan tentang bagaimana zeolit yang diaktifkan secara basa (NaOH) mempengaruhi aktivitas mikroba dan hasil biogas masih terbatas. Dalam penelitian ini, kami menunjukkan bahwa zeolit alam Lampung yang diaktifkan secara basa signifikan meningkatkan produksi biogas dengan menyediakan media imobilisasi yang lebih efektif bagi bakteri anaerob. Analisis Fourier transform infrared spectroscopy (FTIR) mengungkapkan perubahan struktural, dengan pergeseran gelombang Si-O dan Al-O, yang menunjukkan interaksi kimia yang lebih baik setelah aktivasi. Scanning electron microscope-energy dispersive x-ray spectroscopy (SEM-EDX) mengonfirmasi peningkatan kandungan Al dan Na; Al meningkat secara signifikan dari 5,62% menjadi 7,48%, yang menunjukkan peningkatan kandungan Al dalam struktur zeolit setelah aktivasi. Sementara itu, analisis xray diffraction (XRD) mengungkapkan kristalinitas 21% pada zeolit yang diaktifasi, yang menunjukkanpermukaan mendukung untuk perlekatan mikroba. Analisis Brunauer-Emmett-Teller (BET) menunjukkan struktur mesopori (34,335 Å) yang meningkatkan kontak bakteri dengan substrat. Reaktor dengan zeolit yang diaktifkan mencapai puncak produksi biogas sebesar 620 mL, melebihi kontrol karena peningkatan stabilitas mikroba dan pengurangan akumulasi asam lemak volatil (VFA). Hasil ini menunjukkan bahwa zeolit yang diaktivasi secara basa dapat secara signifikan meningkatkan efisiensi sistem produksi biogas dengan meningkatkan imobilisasi mikroba dan stabilitas proses   Abstract Biogas production from cassava wastewater offers a sustainable energy source, though efficiency remains challenging. Natural zeolite is a promising material for anaerobic bacteria immobilization media. However, there is limited knowledge of how alkaline-activated (NaOH) zeolite affects microbial activity and biogas yield. Here, we show that alkaline-activated Lampung natural zeolite significantly enhances biogas production by providing a more effective immobilization medium for anaerobic bacteria. Fourier transform infrared spectroscopy (FTIR) analysis reveals structural changes, with a shift in Si-O and Al-O vibrations, indicating improved chemical interaction post-activation. Scanning electron microscope-energy dispersive x-ray spectroscopy (SEM-EDX) confirms increased Aland Na content; the Al increased significantly from 5.62% to 7.48%, which may indicate an increase in Al content within the zeolite structure after activation. Meanwhile, the x-ray diffraction (XRD) analysis revealed a 21% crystallinity in the activated zeolite, suggesting a favorable surface for microbial attachment. Brunauer-Emmett-Teller (BET) analysis shows a mesoporous structure (34.335 Å) that improves bacterial contact with the substrate. The reactor with activated zeolite achieved peak biogas production of 620 mL, outperforming the control due to enhanced microbial stability and reduced volatile fatty acid (VFA) accumulation. These results sugest that alkaline-activated zeolite can significantly boost the efficiency of biogas production systems by improving microbial immobilization and process stability
Palm Oil Mill Effluent Treatment Technology using Sequencing Batch Reactor (SBR) with Oxidation Reduction Potential (ORP) Monitoring Sanjaya, Andri; Saputri, Desi Riana; Damayanti, Damayanti; Fahni, Yunita; Auriyani, Wika Atro; Mustafa, Mustafa
Jurnal Teknik Kimia dan Lingkungan Vol. 8 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v8i1.3340

Abstract

Palm oil industries have products like Crude Palm Oil (CPO), and 70% of others contain waste. One of the wastes is the liquid waste known as Palm Oil Mill Effluent (POME). The potential of POME to be reprocessed into clean water will be profitable. One of POME's reprocessing methods is the Sequencing Batch Reactor with Aerobic Granulated Sludge (SBR-AGS), which has five main phases: filling, idling, aeration, settling, and discharge, with a cycle time of 360 minutes. The first step in using this reactor is the start-up process, a granule-forming process from some sludge that has already acclimatized. In one complete cycle, the Oxidation-Reduction Potential (ORP) parameter is used to observe the electron transfer process that shows the oxygen supply into the reactor, which enables the condition of each phase in the process to be analyzed. The trend of ORP value is constantly changing in every phase. For the idling phase, the ORP tends to decrease in a value of (-300)-(-400) mV, and for the aeration phase, it will increase in a value of (-100)-100 mV.
The Effect of Acidity Condition (pH) on The Color Change of Anthocyanin Compound from Butterfly Pea Flower Extract (Clitoria ternatea) Saputri, Desi Riana; Listyadevi, Yuniar Luthfia; Adiwibowo, Muhammad Triyogo; Damayanti, Damayanti; Auriani, Wika Atro; Fahni, Yunita; Sanjaya, Andri; Yusupandi, Fauzi; Yuniarti, Reni; Zega, Fidel Abdiman; Ikhlas, Fikri Rahmatul
Communication in Food Science and Technology Vol. 2 No. 2 (2023): Communication in Food Science and Technology, October Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/cfst.v2i2.1570

Abstract

An Indonesian plant called the butterfly pea flower (Clitoria ternatea) is being cultivated to take advantage of the antioxidant properties of its anthocyanin concentration. Several solvents must be used to acquire anthocyanins from butterfly pea flower extract during the extraction procedure. Flowers have many various anthocyanin compositions and exhibit a range of colors. These color differences are utilized in food and beverages as natural colorants. The purpose of this study is to ascertain how the anthocyanin chemicals in butterfly pea flowers respond to acidic conditions in terms of color stability. The extraction was placed over the course of 18 hours with an ethanol solvent at a 60% concentration, and it was evaporated using a rotary evaporator at a temperature of 60°C. Anthocyanin extract of Butterfly pea flower was examined to investigate how pH changes affected color. The anthocyanin extract that had been obtained was subjected to acidity tests at pH 1 to 14. Anthocyanins become more stable in an acidic or low pH environment, giving an object its red color. While this continues, greater anthocyanin pH values will cause blue color fading. When anthocyanins have a high or low pH, it significantly affects food coloring.
Extraction of Avocado Seed Waste as a Potential Feedstock for Biodiesel Production Mustafa, Mustafa; Ladien, Ahmad Fatrijan; Andiani, Balqis Putri; Saputri, Desi Riana; Damayanti, Damayanti; Fahni, Yunita; Auriyani, Wika Atro; Said, Aja Avriana; Sanjaya, Andri
Eksergi Vol 21 No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.13099

Abstract

The rising interest in sustainable energy sources has spotlighted biodiesel as a promising alternative to fossil fuels. Avocado seed waste, rich in vegetable oil, presents a potential feedstock for biodiesel production. However, optimizing the extraction process to maximize oil yield and quality is crucial. This study addresses the knowledge gap concerning the impact of drying time and solvent type on oil extraction efficiency from avocado seeds. Here, we show the effects of varying drying times (2, 3, and 4 hours) and using two solvents (96% ethanol and isopropyl alcohol) on the oil yield and quality using Soxhlet extraction. Results indicate increased drying time correlates with reduced moisture content, with values of 79.94%, 63.17%, and 47.39% for 2, 3, and 4 hours, respectively. Comparatively, isopropyl alcohol exhibited a higher fatty acid content (0.718%) than 96% ethanol. The density of oil extracted with 96% ethanol (1.34 g/ml) after 3 hours of drying surpassed that of isopropyl alcohol. These findings suggest that drying time and solvent type significantly influence the extraction efficiency and quality of oil from avocado seeds, highlighting their potential as a viable biodiesel feedstock.
Co-Authors Agustina, Berliana Putri Andiani, Balqis Putri Andri Cahyo Kumoro Andri Sanjaya Arhab, Jabir Shoji Asfari Ahmad, Raden Fattah Asmarani, Wulan Auriani, Wika Atro Auriyani, Wika Atro Damayanti Damayanti Didik Supriyadi, Didik Fahni, Yunita Fajar, Mutiara Feerzet Achmad Frastia, Wike Ikhlas, Fikri Rahmatul Kamil, Muhamad Idham Ladien, Ahmad Fatrijan Listyadevi, Yuniar Luthfia Mawaddah, Nurul Misbahudin Alhanif Muhammad Triyogo Adiwibowo Mustafa Novita, Ella Prayoga, Ageng Kaka Putra, Muhammad Alparidi Pamungkas Reni Yuniarti Safitra, Edwin Rizki Said, Aja Avriana Salsabila, Dwinda Satria, Arysca Wisnu Utami, Esti Yusupandi, Fauzi Zega, Fidel Abdiman