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All Journal EKSAKTA: Journal of Sciences and Data Analysis Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Jurnal Bio-Geo Material Dan Energi Jurnal Sains dan Teknologi Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia Jurna Beta Kimia Indonesian Journal of Science and Pharmacy Jurnal Bakti Nusantara Jurnal Polimesin Nexus
Hasibuan, Adelia Yesya Putri
Program Studi Teknik Rekayasa Kimia Industri, Teknik Mesin, Politeknik Negeri Medan
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Optimasi Pupuk Organik Cair Limbah Pisang dengan EM4 sebagai Bioaktivator untuk Pertumbuhan Kangkung Muhammad Abdi Lubis; Nina Hartati; Edi Kurniawan; Anjar Siti Mashitoh; Ayu Syufiatun Br Tarigan; Adelia Yesya Putri Hasibuan
Nexus Sains dan Teknologi Vol. 2 No. 1 (2026): Nexus: Jurnal Sains dan Teknologi (Edisi Mei)
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/nst.v2i1.3302

Abstract

Penelitian ini bertujuan untuk memanfaatkan limbah batang dan bonggol pisang sebagai bahan baku Pupuk Organik Cair (POC) dengan penambahan bioaktivator EM4 serta mengevaluasi kualitas dan pengaruhnya terhadap pertumbuhan tanaman kangkung. Penelitian dilakukan dalam dua tahap, yaitu produksi dan karakterisasi POC serta aplikasi pada tanaman. Variasi perlakuan meliputi dosis EM4 (40 ml, 50 ml, dan 60 ml) dan waktu fermentasi (14, 18, dan 22 hari). Parameter yang diamati meliputi uji fisik, pH, dan tinggi tanaman. Hasil penelitian menunjukkan bahwa POC mengalami perubahan warna menjadi lebih gelap dan bau menyengat sebagai indikasi fermentasi. Nilai pH menurun hingga rata-rata 3,3 dan belum memenuhi standar mutu. Aplikasi POC menunjukkan peningkatan tinggi tanaman kangkung dibandingkan kontrol, meskipun tidak signifikan. Secara umum, POC dari limbah batang dan bonggol pisang berpotensi sebagai pupuk organik alternatif, namun memerlukan optimasi proses fermentasi dan peningkatan kandungan hara.
Produksi Biochar dari Berbagai Sumber Biomassa: Metode, Karakteristik, dan Potensi Pemanfaatan Adelia Yesya Putri Hasibuan; Ayu Syufiatun Br Tarigan; Erna Juwita; Nina Hartati; Imas Masriah; Pina Budiarti Pratiwi
Nexus Sains dan Teknologi Vol. 2 No. 1 (2026): Nexus: Jurnal Sains dan Teknologi (Edisi Mei)
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/nst.v2i1.3304

Abstract

Pemanfaatan limbah biomassa sebagai bahan baku biochar merupakan salah satu alternatif yang efektif dalam mengurangi pencemaran lingkungan sekaligus meningkatkan nilai tambah limbah. Penelitian ini bertujuan untuk melakukan systematic review terhadap produksi biochar dari berbagai sumber biomassa dengan fokus pada jenis bahan baku, metode produksi, kondisi proses, serta karakteristik biochar yang dihasilkan. Metode yang digunakan meliputi pencarian literatur dari berbagai basis data ilmiah dengan kriteria inklusi dan eksklusi yang telah ditentukan. Hasil kajian menunjukkan bahwa jenis biomassa dan metode produksi sangat mempengaruhi kualitas biochar. Biomassa lignoselulosa cenderung menghasilkan biochar dengan kandungan karbon dan stabilitas tinggi, sedangkan limbah organik menghasilkan biochar yang kaya unsur hara. Proses pirolisis, khususnya pada suhu 400–600°C, merupakan metode yang paling umum digunakan dan mampu menghasilkan biochar dengan sifat fisikokimia yang baik. Selain itu, peningkatan suhu pirolisis diketahui dapat meningkatkan kandungan karbon, stabilitas termal, serta luas permukaan biochar, meskipun dapat menurunkan yield. Biochar yang dihasilkan memiliki potensi aplikasi sebagai pembenah tanah, adsorben, serta media penyimpanan karbon yang berkontribusi terhadap mitigasi perubahan iklim.Dengan demikian, pemilihan bahan baku dan kondisi proses yang tepat menjadi faktor penting dalam optimasi produksi biochar yang berkelanjutan.
Analisis Kualitas Air Hygiene Sanitasi Secara Fisika dan Kimia di Perumahan Green View Sunggal Devi Lestari; Imas Masriah; Sulwiyatul Kamariah Sani; Siti Mahmudha; Adelia Yesya Putri Hasibuan
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 3 (2025): Juni 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i3.5309

Abstract

This study analyzed the quality of borehole water in Green View Sunggal Housing located in a rice field area. This research used a descriptive analytical method with a cross-sectional design. Samples were taken from 25 boreholes through a purposive sampling technique divided into three zones: north (8 wells), middle (7 wells), and south (10 wells). The parameters evaluated included physical aspects (temperature, odor, taste, color, turbidity) and chemical aspects (pH, hardness, Fe, Mn, nitrate, nitrite, chloride). Laboratory analysis was carried out at the Medan State Polytechnic following SNI standards and the APHA method, with statistical analysis using SPSS for Pearson correlation and linear regression. The results showed that the majority of parameters met the standards of Permenkes No. 32 of 2017. The parameters of temperature, odor, taste, hardness, manganese, nitrate, nitrite, and chloride reached a compliance level of 100%. However, there were discrepancies in color (92%), turbidity (84%), pH (64%), and iron content (80%). Samples from the southern zone adjacent to rice fields within a 200-meter radius showed significant problems with acidic pH (5.8-6.4) and excessive iron content (1.12-1.42 mg/L). Statistical analysis revealed significant correlations between well depth, distance from rice fields, and water quality. Distance from rice fields was the strongest predictor for nitrate (R² = 0.475) and iron (R² = 0.374). The study concluded that better environmental management is needed to maintain and improve water quality in the residential area.
Green Synthesis of Silver Nanoparticles Using Piper crocatum Leaf Extract and Their Antibacterial Activity Against Staphylococcus aureus Miswanda, Dikki; Yanti, Elsa Novri; Tarigan, Ayu Syufiatun Br; Hasibuan, Adelia Yesya Putri; Pratiwi, Pina Budiarti
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 7, ISSUE 2, October 2026
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol7.iss2.art8

Abstract

Silver nanoparticles (AgNPs) were synthesized by a green route using an aqueous infusion of red betel (Piper crocatum Ruiz & Pav.) leaves as the reducing agent. The leaves contain tannins, flavonoids, alkaloids, terpenoids and saponins; their phenolic constituents reduce Ag+ and also have antibacterial activity. Synthesis was carried out at four AgNO3 concentrations (1, 2, 3 and 4 mM) and monitored for six days. UV–Vis spectra showed a surface plasmon resonance (SPR) band with absorption maxima at 420–444 nm. The mean hydrodynamic diameter measured by dynamic light scattering decreased from 238 nm (1 mM) to 102 nm (4 mM) as the AgNO3 concentration increased. Antibacterial activity against Staphylococcus aureus was assessed by disc diffusion, with inhibition zones quantified as area by automated digital image analysis. The net inhibition areas of the AgNPs (24.5–35.6 mm2; equivalent diameters 8.2–9.0 mm) did not differ significantly among AgNO3 concentrations and were smaller than that of the crude extract (141.4 mm2). Piper crocatum leaf extract is therefore an effective, eco-friendly reducing agent for AgNP synthesis, but the antibacterial activity of the resulting colloids was moderate, and their colloidal stability must be improved before an advantage over the extract can be expected.
Co-Authors Anjar Siti Mashitoh Arridina Susan Silitonga - Ayu Syufiatun Br Tarigan Ayu Syufiatun Br Tarigan Ayu Syufiatun Br Tarigan Ayu Syufiatun Tarigan Devi Lestari Devi Lestari Devi Lestari Dikki Miswanda Edi Kurniawan Erna Juwita Erna Juwita Husni Husin Iis Siti Jahro Imas Masriah Imas Masriah Imas Masriah Imas Masriah Inten Pangestika Mira Fatmawati Muhammad Abdi Lubis Nahzim Rahmat Najma Aurellia Rahmadhani Nina Hartati Pina Budiarti Pratiwi Pina Budiarti Pratiwi Pina Budiarti Pratiwi Pina Budiarti Pratiwi Pratiwi, Pina Budiarti Prisca Caesa Moneteringtyas Prisca Caesa Moneteringtyas Rahmat, Nahzim Siti Mahmudha Sulwiyatul Kamariah Sani Sulwiyatul Kamariyah Sani Teuku Mukhriza Yanti, Elsa Novri