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All Journal JMM (Jurnal Masyarakat Mandiri) Jurnal Ilmiah Cendekia Eksakta ASEAN Journal of Chemical Engineering Dedikasi: Jurnal Pengabdian kepada Masyarakat
Pradnya, Irene Nindita
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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EFFECT OF PH AND ADSORBENT DOSES ON MN (II) METAL ADSORPTION IN THE KALIGARANG RIVER SEMARANG CITY USING SYNTHETIC COCONUT SHELL POWDERED ACTIVATED CARBON (PAC) Pradnya, Irene Nindita; Triwibowo, Bayu; Wulansarie, Ria; Hanifah, Ririn; Prakasita, Iffat Ganjar Fadhila
CENDEKIA EKSAKTA Vol. 8 No. 1 (2023)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/ce.v8i1.7578

Abstract

Kaligarang River is the largest river in the Semarang, which looks clear but actually containing Mn metal above the permitted threshold. Excessive presence of Mn metal can cause problems for human being, which can agglomerate inside the brain, liver, and kidneys.Moreover, it can lead to Parkinson's syndrome and damaging the central nervous system. The river water sample testing conducted at Tirta Moedal PDAM, Semarang; contaminated with heavy metal Mn of 1.075 mg/L. Based on Government Regulation No. 82 of 2001, the maximum allowable concentration of Mn in water is 0.1 mg/L. Adsorption with activated carbon is an effective and efficient method in processing Mn metal pollution. Activated carbon formed as powderis from coconut shell synthetic, with trademark Haycarb particle size of 500 microns. The adsorption process was carried out with a contact time of 90 minutes with a stirring speed of 210 rpm. The pH variables were pH 3, 7, and 12 and the adsorbent dose was 1, 5, 10 and 15 g /L. The adsorption results showed that the optimum conditions of the adsorption process occurred at pH 3 with an adsorbent dose of 15 g / L with percent absorption of manganese metal (Mn) of 87.18%.
Extractive Distillation of Ethanol/Water with 1-Butyl-3-Methylimidazolium Bromide Ionic Liquid as a Separating Agent: Process Simulation Hartanto, Dhoni; Handayani, Prima Astuti; Astuti, Widi; Kusumaningtyas, Ratna Dewi; Purwana, Yulian Candra; Maftukhaturrizqiyah, Maftukhaturrizqiyah; Wijayanti, Reni Titis; Wulansari, Durroti Zuhriah; Wulansarie, Ria; Pradnya, Irene Nindita; Hadikawuryan, Danang Subarkah; Wibowo, Agung Ari; Sholihin, Riza Mazidu; Chafidz, Achmad; Khoiroh, Ianatul
ASEAN Journal of Chemical Engineering Vol 23, No 3 (2023)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.72250

Abstract

Ethanol purification has become of great interest recently because ethanol can be used as renewable energy, solvent in many industries, and for medicinal purposes. The separation of ethanol from water is challenging because the azeotropic point has appeared in this binary mixture. Extractive distillation technology is one of the most interesting methods to separate ethanol from water due to the competitiveness of its energy consumption and capital investment costs. Ionic liquids such as 1-butyl-3-methylimidazolium bromide [BMIM] [Br], categorized as a green solvent, produce a significant salting-out effect in the ethanol-water system. This makes ionic liquid a promising solvent in ethanol-water separation. This study simulated the extractive distillation of an ethanol-water system with 1-butyl-3-methylimidazolium bromide as a solvent. The simulation and sensitivity analysis were performed on the Aspen Plus Process Simulator to obtain the optimum configuration. The NRTL thermodynamic model was used in this study. The effects of the number of stages (NS), binary feed stage (BFS), entrainer feed stage (EFS), and reflux ratio (RR) on the ethanol concentration with minimum energy requirements were studied. The most optimal configurations to produce a high ethanol concentration with less energy are NS 28, BFS 22, EFS 4, and RR 1.5.
Pendampingan Pembuatan Biobriket Dari Pemanfaatan Sumber Daya Lokal Limbah Sabut Kelapa di Desa Kemujan Karimunjawa Kusumaningrum, Maharani; Pradnya, Irene Nindita; Wulansarie, Ria; Zakia, Maulida; Bahlawan, Zuhriyan Ash Shiddieqy; Imani, Nadya Alfa Cahaya; Permanadewi, Indrasukma; Salsabila, Luvena; Suwandi, Luluk Arvi Cahyaning; Wati, Afifah Sagita Fitria; Syahputra, Adhika Bintang; Fandika, Putri Maharani Adinda; Pramitha, Deva Aurelya; Pratama, Muhammad Herdi; Diana, Savira Rahma; Sadan, Serlia Fitri; Imanullah, Kautsar Taqi
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 1 (2024): Jurnal Dedikasi
Publisher : Universitas Jayabaya

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Abstract

Abstrak Desa Kemujan, yang terletak di Kecamatan Karimunjawa, memiliki potensi besar dalam memanfaatkan limbah sabut kelapa sebagai bahan baku biobriket. Dengan luas wilayah 162,1 km² dan populasi 3.391 jiwa, desa ini memiliki keberagaman budaya dan suku yang kaya. Limbah sabut kelapa yang terdapat di Desa Kemujan pada saat ini belum dimanfaatkan secara optimal. Hal ini terjadi karena minimnya kesadaran dan pengetahuan masyarakat sekitar untuk mengolah sabut kelapa tersebut. Sabut kelapa merupakan biomassa yang dapat dimanfaatkan sebagai bahan alami pembuatan biobriket. Sehingga pengabdian melalui pendampingan dan pelatihan pembuatan biobriket untuk memanfaatkan sumber daya lokal sabut kelapa di Desa Kemujan Karimunjawa perlu diselenggarakan. Metode pelaksanaan yang dilakukan dalam pengabdian ini adalah sosialisasi terkait biobriket dan pelatihan pembuatan biobriket dari sabut kelapa secara langsung. Hasil yang didapat dari pengabdian ini adalah meningkatkan nilai guna dan nilai ekonomis sabut kelapa, berkontribusi pada pengembangan UMKM di Desa Kemujan, serta meningkatkan kesadaran dan pengetahuan masyarakat terkait pemanfaatan limbah sabut kelapa serta proses pembuatan biobriket dari sabut kelapa. Keywords: Biobriquettes; Coconut Husk; Waste
EFFECT OF PH AND ADSORBENT DOSES ON MN (II) METAL ADSORPTION IN THE KALIGARANG RIVER SEMARANG CITY USING SYNTHETIC COCONUT SHELL POWDERED ACTIVATED CARBON (PAC) Pradnya, Irene Nindita; Triwibowo, Bayu; Wulansarie, Ria; Hanifah, Ririn; Prakasita, Iffat Ganjar Fadhila
CENDEKIA EKSAKTA Vol. 7 No. 2 (2022)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/ce.v7i2.7594

Abstract

Kaligarang River is the largest river in the Semarang, which looks clear but actually containing Mn metal above the permitted threshold. Excessive presence of Mn metal can cause problems for human being inside the brain (Parkinson's syndrome), liver, and kidneys. The aim of the study was to analyze the effect of the adsorbent dose and the pH of the solution containing Mn metal. The river water sample was tested at Tirta Moedal PDAM, Semarang; contaminated 1.075 mg/L heavy metal Mn. Based on Government Regulation No. 82 of 2001, the maximum allowable concentration of Mn in water is 0.1 mg/L. Adsorption with activated carbon is an effective method in processing Mn metal pollution. Activated carbon formed as powder from coconut shell size of 500 microns. The adsorption process was with a contact time of 90 minutes and a stirring speed of 210 rpm. The pH variables were pH 3, 7, and 12 and the adsorbent dose was 1, 5, 10 and 15 g /L. The adsorption results showed that the optimum conditions of the adsorption process occurred at pH 3 with an adsorbent dose of 15 g / L with percent absorption of Mn metal of 87.18%. Keywords: Activated carbon, Adsorption, Manganese
PENERAPAN SMART FARMING MAGGOT BSF DALAM MENDORONG KUALITAS AYAM UNGGUL Pradnya, Irene Nindita; Zakia, Maulida; Sukestiyarno, Yohanes Leonardus; Enjelita, Anggun; Emyu, Dalnius; Maulana, Ivan
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 2 (2025): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i2.30036

Abstract

Abstrak: Desa Karangkobar di Kendal memiliki lingkungan alam yang subur, menjadikannya tempat yang cocok untuk peternakan ayam. Ketersediaan pakan alami, udara bersih, dan kualitas air yang baik mendukung kesehatan ternak. Masalah pada Tini Farm, mitra peternakan mikro dalam program ini, hanya terdapat 6 pekerja berpendidikan dasar. Peternak ayam masih mengandalkan pakan konvensional (pur) yang rendah protein dan berisiko mengandung zat berbahaya. Alternatif seperti maggot BSF memiliki nutrisi tinggi dan ramah lingkungan, tetapi budidayanya terkendala teknologi, media wadah, serta suhu dan kelembaban yang kurang optimal untuk pertumbuhannya. Tujuan pengabdian adalah penerapan smart farming maggot BSF yang meningkatkan kualitas ayam siap dijual dalam 1–3 bulan antara 125-200 ekor ayam per siklus serta keterampilan mitra dalam pemantauan pertumbuhan maggot berbasis IoT. Metode pelaksanaan koordinasi dengan 6 peternak Tini Farm di Desa Karangkobar, konstruksi, praktik, serta pendampingan penggunaan advanced technology maggot cultivation dan automatic feeder berbasis IoT terutama penerapan suhu optimal (30–36°C) dan kelembaban (60–70%). Sosialisasi meliputi instalasi, kontrol suhu dan kelembaban, serta monitoring real-time. Evaluasi dilakukan melalui wawancara serta kuesioner sebanyak 15 pertanyaan, dengan pendampingan lanjutan selama 3–6 bulan. Hasil survei menunjukkan 72,2% masyarakat tertarik mengenai budidaya maggot sedangkan dalam evaluasi lanjutan 60,6% masyarakat mengalami peningkatan produksi dari budidaya maggot BSF. Teknologi ini mampu menekan biaya produksi dan meningkatkan daya saing peternak.Abstract: Karangkobar Village in Kendal has a fertile natural environment, making it an ideal location for poultry farming. The availability of natural feed, clean air, and highwater quality supports livestock health. However, Tini Farm, a micro-scale poultry farming partner in this program, faces several challenges. It only employs six workers with basic education, and the farmers still rely on conventional feed (pur), which is low in protein and may contain harmful substances. Alternative feeds like BSF maggots offer high nutritional value and are environmentally friendly, but their cultivation is limited by technology, container media, as well as suboptimal temperature and humidity conditions. This program aims to implement smart farming using BSF maggots to enhance chicken quality, enabling sales within 1–3 months, producing 125–200 chickens per cycle. It also focuses on improving farmers' skills in IoT-based maggot growth monitoring. Implementation includes coordination with six poultry farmers at Tini Farm, construction, practical training, and assistance in using advanced maggot cultivation technology and IoT-based automatic feeders. Training covers installation, temperature and humidity control, and real-time monitoring. Evaluation involved interviews and a 15-question questionnaire, followed by 3–6 months of additional assistance. Results show 72.2% of the community is interested in maggot farming, with 60.6% increasing production. This technology reduces costs and boosts competitiveness.
Co-Authors Agung Ari Wibowo Bahlawan, Zuhriyan Ash Shiddieqy Bayu Triwibowo Chafidz, Achmad Dhoni Hartanto Diana, Savira Rahma Emyu, Dalnius Enjelita, Anggun Fandika, Putri Maharani Adinda Hadikawuryan, Danang Subarkah Heni Pujiastuti Imani, Nadya Alfa Cahaya Imanullah, Kautsar Taqi Khoiroh, Ianatul Maftukhaturrizqiyah, Maftukhaturrizqiyah Maharani Kusumaningrum Maulana, Ivan Maulida Zakia Permanadewi, Indrasukma Prakasita, Iffat Ganjar Fadhila Pramitha, Deva Aurelya Pratama, Muhammad Herdi Prima Astuti Handayani Purwana, Yulian Candra Ratna Dewi Kusumaningtyas Ria Wulansarie, Ria Riza Mazidu Sholihin Sadan, Serlia Fitri Salsabila, Luvena Sukestiyarno Sukestiyarno Suwandi, Luluk Arvi Cahyaning Syahputra, Adhika Bintang Wati, Afifah Sagita Fitria Widi Astuti Wijayanti, Reni Titis Wulansari, Durroti Zuhriah