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All Journal Rotasi Eksergi: Chemical Engineering Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Konversi Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat REACTOR : Journal of Research On Chemistry And Engineering Hexatech: Jurnal Ilmiah Teknik Journal of Industrial Community Empowerment Jurnal Teknik Kimia dan Lingkungan Jurnal Pengabdian Masyarakat Bangsa Jurnal Teknologi Lingkungan Communication in Food Science and Technology TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Auriyani, Wika Atro
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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.
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.
SOSIALISASI DAN DEMONSTRASI PENGELOLAAN SAMPAH DENGAN METODE TAKAKURA Auriyani, Wika Atro; Fajar, Mutiara; michael, Michael; Kusumandary, Pralestika Dwi; Yanda, Rahma
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol. 5 No. 1 (2021)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v5i1.267

Abstract

Salah satu isu penting lingkungan di provinsi Lampung saat ini adalah pencemaran lingkungan yang disebabkan oleh banyaknya timbunan sampah. Menurut data dari Sistem Informasi Pengelolaan Sampah Nasional (SIPSN) periode 2017-2018, timbunan sampah terbesar menurut sumber sampah di Provinsi Lampung berasal dari sampah rumah tangga yaitu sebesar 72,98% sedangkan komposisi sampah didominasi oleh sisa-sisa makanan. Pertumbuhan sampah rumah tangga meningkat seiring dengan pertumbuhan penduduk yang tinggi. Desa Way Huwi, Kecamatan Jati Agung merupakan salah satu desa di Kecamatan dengan pertumbuhan penduduk tinggi yaitu sekitar 9,51% dan menduduki posisi kedua setelah Natar.pengelolaan sampah di Desa way Huwi. Pengelolaan sampah di Desa Way Huwi masih berupa pengumpulan akhir di TPA, namun fasilitas TPA masih berupa open dumping yang memicu masalah lingkungan lain seperti polusi udara, kebakaran, longsor, penurunan kesehatan warga, pencemaran air, dan lain lain. Selain itu, warga Desa Way Huwi yang sebagian besar memiliki lahan yang luas dan terbuka biasanya membakar sampah rumah tangga yang menyebabkan permasalahn lingkungan lainnya. Metode Takakura adalah salah satu metode yang sederhaa dan murah untuk mengolah sampah organik rumah tangga. Melalui sosialisasi dan demonstrasi berkelanjutan pengelolaan sampah dengan metode Takakura di Desa Way Huwi diharapkan mampu meningkatkan pengetahuan dan kesadaran masyarakat untuk memanfaatkan limbah organik rumah tangga sebagai pupuk kompos, mengingat sebagian besar mata pencarian penduduk Desa way Huwi berada di sektor pertanian dan Perkebunan. Setelah diadakan sosialisasi dan demonstrasi pengelolaan sampah organik di desa Way Huwi, pengetahuan masyarakat mengenai pengelolaan sampah dirumah tangga meningkat dan 87% masyarakat akan memisahkan sampah organik dan anorganik serta antusias untuk mengikuti kegiatan Pengabdian Kepada Masyarakat dengan tema yang lainnya.
Extraction of leaves oil from fresh leaves by using microwave-assisted extraction (MAE) and ultrasonic-assisted extraction (UAE) methods Imalia, Calaelma Logys; Simbolon, Firman; Hendra, Hendra; Junita, Nilam; Natalia, Yolanda; Nurfitri, Viola; Zahra, Nurul Afifah; Purba, Sry Oktavianty; Harni Saragih, Tresya Siti; Pribadi, Shelty Aty; Auriyani, Wika Atro; Achmad, Feerzet
Konversi Vol 14, No 2 (2025): OCTOBER 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i2.22972

Abstract

Essential oils are natural chemical compounds that are volatile and have a distinctive aroma, which are produced by plants as part of their secondary metabolites. This study aims to examine the differences in % yield content, extract pH, color, FFA value, and essential oil structure of each sample. The main materials used in this study were several types of aromatic leaves, namely lemongrass, pandan, lime, and eucalyptus leaves. The methods used were Microwave-Assisted Extraction (MAE) and Ultrasound-Assisted Extraction (UAE). The essential oil with the highest yield value and a specific gravity close to the Indonesian National Standard (SNI) is analyzed using Fourier Transform Infrared Spectroscopy (FTIR). The eucalyptus leaf sample yielded the highest percentage with the MAE method, achieving a yield of 46 %. The FTIR analysis identified a broad absorption peak at 3257.7 cm⁻¹, indicating the presence of hydroxyl groups (-OH), which suggests alcohols or phenols and possible moisture contamination. Peaks at 2124.6 cm⁻¹ and 1744 cm⁻¹ reveal methylene (C-H) and carbonyl (C=O) groups, suggesting the presence of terpenoids and oxidized compounds like esters or ketones. Additional peaks at 1640 cm⁻¹ and 1013.8 cm⁻¹ and ether (C-O) groups, with the latter confirming the presence of 1,8-cineole in eucalyptus oil.
Performance Test of Biogas Production from Tapioca Wastewater: Effect of HRT and Immobilized Media Sanjaya, Andri; Arhab, jabir Shoji; Salsabila, Dwinda; Damayanti, Damayanti; Fahni, Yunita; Deviany, Deviany; Agustryani, Putri; Auriyani, Wika Atro; Saputri, Desi Riana
Eksergi Vol 23 No 1 (2026)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v23i1.16197

Abstract

Tapioca starch industry wastewater contains high concentrations of organic matter, offering potential for renewable energy generation via biogas production. This study evaluates the effects of hydraulic retention time (HRT) variation and Lampung natural zeolite as an immobilization medium on biogas production in an anaerobic reactor. Two reactor configurations were compared: one with zeolite as the microbial immobilization medium and a control reactor without any immobilization media. Zeolite improved the sCOD degradation efficiency up to 93% compared to the non-immobilized reactor. VFA conversion to methane remained more stable with zeolite, producing up to 520 mL of biogas at a 10-day HRT, with an average biogas yield of 61.97 mL/g dry substrate, much higher than 4.15 mL/g in the non-immobilized reactor. This research confirms the effectiveness of Lampung natural zeolite for enhancing microbial retention, accelerating methanogenesis, and improving overall anaerobic reactor performance. These results have substantial implications for developing efficient, sustainable, and environmentally friendly treatment technologies for tapioca starch wastewater, offering simultaneous solutions for pollution control and renewable energy generation.
Co-Authors Agustina, Berliana Putri Agustryani, Putri Aji, Ahmad Frantoni Aldillah Herlambang Alhuda, Alhuda Andiani, Balqis Putri Andri Sanjaya Ardian, Muhammad Ikhwan Arhab, Jabir Shoji Asfari Ahmad, Raden Fattah Asmarani, Wulan Astuti, Woro A’yuni , Dewi Qurrota Damayanti Damayanti Demi Dama Yanti Dennis Farina Nury Devia Gahana Cindi Alfian Deviany, Deviany Dicky J. Silitonga Didik Supriyadi, Didik Eko Pujiyulianto Fahni, Yunita Fajar, Mutiara Feerzet Achmad Firjatullah, Ahmad Labib Harni Saragih, Tresya Siti Hendra Hendra Imalia, Calaelma Logys Junita, Nilam Kusumandary, Pralestika Dwi Ladien, Ahmad Fatrijan Listyadevi, Yuniar Luthfia Mawaddah, Nurul Mediana, Annisa Michael Michael Misbahudin Alhanif Muhammad Triyogo Adiwibowo Muhammad Zulfikar Luthfi Musa Musa Mustafa Natalia, Yolanda Novita, Ella Nurafinda, Meylani Dwi Nurfitri, Viola Prasetyo, Rizky Dimas Prasetyo, Tri Wahyu Prayoga, Ageng Kaka Pribadi, Shelty Aty Purba, Sry Oktavianty Putra, Muhammad Alparidi Pamungkas Putri, Amelia Syifa Divana Rahma Yanda Ramadhan, Zulfikar Reni Yuniarti Rifqi Sufra Safitra, Edwin Rizki Said, Aja Avriana Salsabila, Dwinda Saputri, Desi Riana Satria , Arysca Wisnu Satria, Arysca Wisnu Simbolon, Firman Wardani, Permadi Yusupandi, Fauzi Zahra, Nurul Afifah