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All Journal International Journal of Renewable Energy Development Eksergi: Chemical Engineering Journal JURNAL INTEGRASI PROSES Jurnal Kreativitas PKM Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Hexatech: Jurnal Ilmiah Teknik Journal of Industrial Community Empowerment DEDIKASI : Jurnal Pengabdian Kepada Masyarakat International Journal of Renewable Energy Development
Yunita Fahni
Chemical Engineering Department, Institut Teknologi Sumatera, Lampung Selatan, Indonesia
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The Role of Membrane, Feed Characteristic and Process Parameters on RED Power Generation Heru Susanto; Meike Fitrianingtyas; I Nyoman Widiasa; Titik Istirokhatun; Yunita Fahni; Assalaam Umar Abdurahman
International Journal of Renewable Energy Development Vol 12, No 1 (2023): January 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.49775

Abstract

Reverse electrodialysis (RED) is a renewable energy-generating SGE technique using energy from salinity gradients. This research investigates the effect of membrane and feed characteristics on reverse electrodialysis (RED) power generation. Some investigations on the process parameters effect for the complement of the main study were also conducted. The generated power of RED was measured using power density analysis. The experiments were performed using artificial seawater varied from 0 to 1 g/L NaCl for diluted salt water and from 0 to 40 g/L NaCl for concentrated salt water. In a study of ions type, NaCl non-pa is used to represent monovalent ions, and MgSO4 represents divalent ions. The results showed that the highest voltage generation is 2.004 volts by 14 cells number of the RED membrane utilizing a RED self-made laboratory scale. The power density was enhanced by raising the flow rate (0.10 L/min), concentration difference (40 g/L), and the presence of electrode rinse solution. Further, the ion type (monovalent, divalent, and multivalent) influenced the resulting RED power density, where the divalent ion (MgSO4) 's power density was greater than that of the monovalent ion (NaCl). The resistance and selectivity of the membrane were the major keys for the power generation of RED
Composting of Dry Leaves and Household Kitchen Wastes Using Rotary Drum Biocomposter Wika Atro Auriyani; Yunita Fahni; Desi Riana Saputri; Nurul Mawaddah; Mutiara Fajar; Ella Novita; Wulan Asmarani; Raden Fattah Asfari Ahmad
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.
Pengaruh penambahan koagulan terhadap laju sedimentasi pada proses sedimentasi larutan tepung maizena Yunita Fahni; Rifqi Sufra; Ihsan Maulana Ahmad; Syalsa Fadhilah
Hexatech: Jurnal Ilmiah Teknik Vol. 2 No. 1 (2023): Hexatech: Jurnal Ilmiah Teknik
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/hexatech.v2i1.704

Abstract

Proses sedimentasi batch sangat berperan penting dalam industri, seperti pada proses pemurnian air limbah, pengolahan air sungai pengendapan kristal dari lautan induk, dan lain-lain. Proses batch sering dilakukan dalam proses komersial dengan mempertimbangkan kecepatan pengendapan terminal terminal dan partikel-partikelnya. Pada penelitian ini akan dilakukan studi berkaitan dengan pengaruh penambahan koagulan (tawas) terhadap laju sedimentasi pada berbagai variasi konsentrasi larutan tepung maizena yang berbeda. Tawas sebagai koagulan terbukti mampu membuat proses sedimentasi lebih efisien, yaitu dengan mempercepat laju sedimentasi. Penambahan koagulan pada setiap variasi konsentrasi menghasilkan laju sedimentasi yang lebih besar. Koagulan sendiri memiliki fungsi untuk menggumpalkan partikel-partikel maizena dimana digunakan untuk memperberat massa pertikel sehingga membuat laju sedimentasi lebih cepat. Adapun pengaruh dari variasi konsentrasi terhadap laju sedimentasi, bahwa semakin besar konsentrasi slurry maka kecepatan pengendapannya akan semakin rendah. Hal ini dikarenakan fenomena hindered settling yaitu saat partikel-partikel maizena mulai bergesekan yang menyebabkan waktu sedimentasi lama sehingga untuk mencapai dasar dari tabung sedimentasi.
Metode Modifikasi Membran Polietersulfon (PES) Untuk Meningkatkan Antifouling−Mini Review Modifikasi Membran Enny Nurmalasari; Hasnah Ulia; Apsari Puspita Aini; Agung Kurnia Yahya; Yunita Fahni
Eksergi Vol 20, No 2 (2023)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v20i2.9596

Abstract

Polyethersulfone (PES) is the most common material in various medical and water treatment applications because of its excellent mechanical and thermal properties. The hydrophobicity of polyethersulfone is considered as one of the main drawbacks because the hydrophobic surface causes a high biofouling effect on the membrane, so it has limitations in using Polietersulfon PES membrane technology. Modification of PES membranes is an important topic to be continuously developed to improve the properties of PES membranes. Membrane modifications focus on increasing the hydrophilicity, selectivity, and stability of membranes that are expected to be used commercially. Modifications were made to change the hydrophobic membrane surface into a hydrophilic membrane with good mechanical properties by introducing hydrophilic properties and functional groups to the polyethersulfone membrane surface. This review includes reviews and discussions on modifying PES membranes by mixing, coating, and grafting methods. In particular, adding functional groups to polyethersulfone is a suitable method for introducing hydrophilic properties. The addition of nanomaterials to the surface of the polyethersulfone membrane by mixing, coating, grafting, and combinations significantly increases the surface of the membrane, and all modifications affect the surface roughness of the membrane.
Pelatihan Pembuatan Mocaf Sebagai Pengganti Tepung Terigu Di Desa Titiwangi Kabupaten Lampung Selatan Feerzet Achmad; Muhammad Reahan Ramadhan; Ridho Ramadhan; Yunita Fahni; Mustafa Mustafa; Suhartono Suhartono
Dedikasi : Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2023): Dedikasi : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Layanan Pendidikan Tinggi Wilayah III DKI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53276/dedikasi.v2i2.107

Abstract

Mocaf merupakan tepung olahan singkong yang diperoleh melalui peroses fermentasi sehingga didapat tepung dengan karakteristik menyerupai terigu. Mocaf diperoleh dan didapat melalui beberapa tahapan diantaranya pengupasan, pemotongan, fermentasi, pengeringan dan penepungan. Tepung ini memiliki kandungan yang berbeda dengan tepung terigu karena mocaf tidak memiliki kandungan gluten sehingga sangat cocok dikonsumsi oleh penderita cilia dan orang yang sedang diet gluten. Desa Titiwangi merupakan salah satu Desa di Lampung Selatan yang mayoritas mata pencahariannya pada bidang pertanian. Singkong merupakan salah satunya, sehingga masyarakat Desa Titiwangi perlu diberikan pengetahuan melalui pelatihan tentang pengolahan singkong menjadi mocaf untuk mengurangi konsumsi terigu dan singkong dapat dimanfaatkan dengan lebih baik. Pelatihan ini tidak hanya pengolahan singkong menjadi mocaf tetapi juga proses pengemasan yang lebih menarik dan ekonomis serta pengolahannya menjadi brownis. Keberhasilan pelatihan dapat dilihat dari hasil kuisioner tentang pengetahuan warga meningkat sebelum dan sesudah pelatihan. Selain itu ekonomi desa akan  semakin meningkat dengan adanya peroduk-produk olahan berbahan baku mocaf contohnya brownies dan olahan pangan lainnya. Kata Kunci: Singkong; Mocaf; Terigu; Brownies
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.
The Implementation of Rotary POC Technology for Organic Fertilizer Production in Tarahan Village, South Lampung Yunita Fahni; Andri Sanjaya; Mustafa; Desi Riana Saputri; Aldillah Herlambang
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 6 No. 4 (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.v6i4.4126

Abstract

Tarahan Village is one of the larger villages in Katibung District, South Lampung. Despite not being classified as an agricultural region, Tarahan Village exhibits remarkable productivity in cultivating vegetables and fruits. So far, organic waste from fruits and vegetables has been discarded and burned or used only for animal feed. The large volume of unprocessed fruit and vegetable waste causes various problems for village residents, both directly and indirectly. Besides that, the village's intensive horticultural farming activities have encouraged the increased use of inorganic fertilizers. This pollutes the environment and harms the soil, organisms that live in the soil, and humans who consume these horticultural products. The application of liquid organic fertilizer, specifically POC, is deemed necessary to effectively address the issue of fruit and vegetable waste management while ensuring the quality of organic horticultural products. A composter is a suitable technology employed for the production of liquid fertilizer. Since oxygen is crucial for microorganisms in decomposing organic matter, the POC produced through the aerobic composting process will mature more quickly and not produce offensive odors. The goal of implementing this technology is to spread the word that garbage can be turned into something valuable if managed properly, leading to a cleaner community and more economic opportunities. The rotary POC technology scheme consists of a plastic drum that is supported by an iron structure. The drum is furnished with a rotating lever designed for the purpose of stirring, thereby facilitating the uniform mixing of organic material upon the addition of the bioactivator. The agitation of the solution facilitates the efficient execution of the aeration process. The equipment scheme has been developed with the aim of enhancing the effectiveness and efficiency of composting with regard to both time management and the quality of the final outcomes. This technology has the potential to be an alternative solution for dealing with household waste, and the product in the form of POC has the potential to reduce the use of inorganic fertilizers.
The Role of Membrane, Feed Characteristic and Process Parameters on RED Power Generation Heru Susanto; Meike Fitrianingtyas; I Nyoman Widiasa; Titik Istirokhatun; Yunita Fahni; Assalaam Umar Abdurahman
International Journal of Renewable Energy Development Vol 12, No 1 (2023): January 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.49775

Abstract

Reverse electrodialysis (RED) is a renewable energy-generating SGE technique using energy from salinity gradients. This research investigates the effect of membrane and feed characteristics on reverse electrodialysis (RED) power generation. Some investigations on the process parameters effect for the complement of the main study were also conducted. The generated power of RED was measured using power density analysis. The experiments were performed using artificial seawater varied from 0 to 1 g/L NaCl for diluted salt water and from 0 to 40 g/L NaCl for concentrated salt water. In a study of ions type, NaCl non-pa is used to represent monovalent ions, and MgSO4 represents divalent ions. The results showed that the highest voltage generation is 2.004 volts by 14 cells number of the RED membrane utilizing a RED self-made laboratory scale. The power density was enhanced by raising the flow rate (0.10 L/min), concentration difference (40 g/L), and the presence of electrode rinse solution. Further, the ion type (monovalent, divalent, and multivalent) influenced the resulting RED power density, where the divalent ion (MgSO4) 's power density was greater than that of the monovalent ion (NaCl). The resistance and selectivity of the membrane were the major keys for the power generation of RED
Biofermentasi Limbah Pertanian dengan Teknologi Fermentor dan Biocomposter untuk Mewujudkan Pertanian Organik di Desa Rawa Selapan Dewi Chusniasih; Winati Nurhayu; Yunita Fahni; Fitri Amelia Purmadi; Kharisma Aulia Putri
Jurnal Kreativitas Pengabdian Kepada Masyarakat (PKM) Vol 6, No 12 (2023): Volume 6 No 12 2023
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jkpm.v6i12.12469

Abstract

ABSTRAK Pengelolaan limbah organik sisa pertanian maupun limbah rumah tangga menjadi hal yang perlu diperhatikan, karena akan berdampak negatif bagi lingkungan. Desa Rawa Selapan merupakan salah satu desa dengan luas sawah terbesar di Lampung Selatan. Selama ini, limbah pertanian di desa tidak dimanfaatkan dengan baik. Selain itu, sistem pertanian dengan penggunaan pupuk kimia dapat mengubah ketersediaan hara dan mikroorganisme tanah sehingga tanah mengalami penurunan tingkat kesuburan. Salah satu upaya untuk memanfaatkan limbah organik dan meningkatkan kesuburan tanah yaitu mengolah limbah organik menjadi pupuk organik/kompos. Kegiatan ini bertujuan untuk memanfaatkan limbah organik pertanian di Desa Rawa Selapan, serta melatih masyarakat desa membuat pupuk kompos menggunakan alat fermentor dan  rotary biocomposter. Kegiatan dilakukan dengan tahapan persiapan, pembuatan alat fermentor dan rotary biocomposter, pelaksanaan kegiatan dengan pemaparan materi dan pelatihan pembuatan kompos, serta hasil kegiatan dievaluasi dengan kuisioner. Terdapat peningkatan pemahaman peserta mengenai pembuatan pupuk menggunakan fermentor dan rotary biocomposter, yang semula hanya 39% menjadi 83% peserta yang memahami hal ini. Selain itu, berdasarkan post-test, sebanyak 91% peserta menjawab akan melanjutkan pembuatan pupuk organik menggunakan fermentor dan biocomposter. Kegiatan ini berhasil meningkatkan pengetahuan peserta mengenai dampak negatif penumpukan limbah organik dan penggunaan pupuk kimia berkepanjangan. Selain itu, peserta kegiatan juga telah menguasai teknik pembuatan pupuk kompos dan bioaktivator berbasis fermentasi menggunakan alat fermentor dan rotary biocomposter. Kata Kunci: Fermentor, Bioaktivator, Kompos, Limbah Organik, Rotary Biocomposter  ABSTRACT Management of organic waste from agricultural residues and household waste needs attention due to its potential negative impact on the environment. Rawa Selapan Village is one of the villages with the largest rice field area in South Lampung. So far, agricultural waste in the village has not been utilized properly. In addition, agricultural systems using chemical fertilizers can alter the availability of soil nutrients and microorganisms, resulting in decreased soil fertility. One approach to utilizing organic waste and increasing soil fertility is the conversion of organic waste into organic fertilizer/compost. Objective: This activity aims to utilize organic agricultural waste in Rawa Selapan Village and provide training to village communities on compost production using fermenters and rotary biocomposters. This activity aims to utilize organic agricultural waste in Rawa Selapan Village, as well as train village communities to make compost using fermenters and rotary biocomposters. The activity was carried out in several stages, including preparation stages, building a fermenter and rotary biocomposter, explanation of materials, training in compost production, and the evaluation of the program using a questionnaire. Participants' understanding of compost production using fermenters and rotary biocomposters increased from an initial 39% to 83%. Furthermore, 91% of participants indicated their intention to continue producing organic fertilizer using fermenters and biocomposters based on the post-test result. This activity succeeded in increasing participants' knowledge regarding the negative impacts of organic waste accumulation and prolonged use of chemical fertilizers. Additionally, activity participants have acquired proficiency in fermentation-based compost fertilizer production and the use of bioactivators with fermenters and rotary biocomposters. Keywords: Fermentor, Bioactivator, Compost, Organic Waste, Rotary Biocomposter
MICROWAVE-ASSISTED EXTRACTION OF TANNIN FROM PAPAYA LEAVES (CARICA PAPAYA LINN): THE EFFECT OF SOLVENT RATIO AND MICROWAVE POWER Glen Bower Vebrianto Siregar; Early Akhalisty Inge Abigail Br Simanjuntak; Desi Riana Saputri; Yunita Fahni; Mustafa Mustafa; Rifqi Sufra; Reni Yuniarti; Fauzi Yusupandi; Faalih Pandu Wicaksono Hadi; Diana Catur Pratiwi; Putri Jesika Adelia; Vania Nur Wahdani; Angeline Nauli; Khofifah Anggitiya Ningrum; Misbahudin Alhanif
JURNAL INTEGRASI PROSES Vol 13, No 1 (2024)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v13i1.24363

Abstract

Papaya leaves (Carica papaya Linn) have many health benefits, such as antibacterial, anti-inflammatory, antidiarrhea, and others. Papaya leaves contain tannins, saponins, alkaloids, triterpenoids, steroids, and flavonoids. The common characteristic of papaya leaves is the green color, which indicates the presence of tannins. The study aims to discover the characteristics of papaya leaf extract, the effect of the solvent ratio, and the microwave power (MP) on the extraction of tannins from the papaya leaves. Papaya leaves are extracted using the microwave-assisted extraction (MAE) method at 100, 140, and 180 W for 30 minutes, with variations in the material to the solvent ratios 1:10, 1:20, 1:30, 1:40, and 1:50. Qualitative tannin testing was carried out through color observation and FeCl3 tests. UV-Vis spectrophotometry was also used to determine the tannin levels obtained during extraction. The FeCl3 test showed that papaya leaf extract contains tannins. The optimal concentration of tannins is produced at a ratio of 1:20, with a 180 W MP of 8.06 mg TAE/g and a yield of 0.81%. MAE can potentially increase the yield of tannins, which is potentially beneficial to health.
Co-Authors Adimas Anugrah Rivandy Agriadi Dwi Nugroho Putro Agriadi Dwi Nugroho Putro Agus Slamet Riyadi Aldillah Herlambang Amedeo Cavendish Andri Sanjaya Angeline Nauli Anis Safitri Ramadhani Anugrah Ayub Waskito Apsari Puspita Aini Arifino Decika Rachman Assalaam Umar Abdurahman Athallah Satrionindya Herlambang Azzaima Ayu Ulisya Cika Amalia Shabira Damayanti Damayanti Dennis Farina Nury Desi Riana Saputri Desi Riana Saputri Desi Riana Saputri Devia Gahana Cindi Alfian Deviany Dewi Chusniasih Diana Catur Pratiwi Didik Supriyadi Dikri Uzlifah Janah Early Akhalisty Inge Abigail Br Simanjuntak Edwin Rizki Safitra Ella Novita Enny Nurmalasari Faalih Pandu Wicaksono Hadi Fauzi Yusupandi Feerzet Achmad Fidel Abdiman Zega Fikri Rahmatul Ikhlas Fitri Amelia Purmadi Galeh Widharma Glen Bower Vebrianto Siregar Guita Normi Hasnah Ulia Heru Susanto I Nyoman Widiasa Ibnu Maulana Hidayatullah Ihsan Maulana Ahmad Kharisma Aulia Putri Khofifah Anggitiya Ningrum Meike Fitrianingtyas Mela Rosalia Misbahudin Alhanif Muhammad Bagus Tri Jaya Saputra Muhammad Reahan Ramadhan Muhammad Triyogo Adiwibowo Mustafa Mustafa Mustafa Mutiara Fajar Nurul Mawaddah Nurul Mawaddah Putra Hidayatulloh Putri Jesika Adelia Raden Fattah Asfari Ahmad Ratih Ainun Mardiyah Reni Yuniarti Ridho Ramadhan Ridho Ramadhan Jakop Rifqi Sufra Safira Anggarini Suhartono Suhartono Syalsa Fadhilah Taharuddin Taharuddin Titik Istirokhatun Vania Nur Wahdani Variyana, Yeni Veronika Viany Suswanto Wika Atro Auriyani Winati Nurhayu Wulan Asmarani Yahya, Agung Kurnia Yuniar Luthfia Listyadevi