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All Journal Jurnal Teknika SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Nemui Nyimah
Marta Pramudita, Marta
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

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Ekstrak Kulit Manggis (Garcinia Mangostana L) Sebagai Inhibitor Korosi Baja Lunak (Mild Steel) Dalam Larutan H 2 SO 4 1 M Pramudita, Marta; Juliansyah, Hendri; Rizki, Muhammad Andre
TEKNIKA Vol 10, No 1 (2014): Juli
Publisher : Fakultas Teknik Universitas Sultan Ageng Tirtayasa

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Abstract

Berdasarkan berbagai penelitian, kulit manggis memiliki potensi yang baik sebagai inhibitorkorosi Tujuan dari penelitian ini adalah untuk mengetahui efisiensi ekstrak inhibitor kulitmanggis pada baja lunak dalam larutan asam sulfat. Pertama yang harus disiapkan adalahsampel baja yang telah dihaluskan dan bubuk kulit manggis. Kulit manggis yang sudahdisiapkan di ekstrak dengan metoda maserasi menggunakan pelarut etanol selama 6 jam.Siapkan larutan media korosif H 2 SO 4 1 M dan sampel baja berukuran 1 x 2 x 0,5 cm.Setelah itu merendam baja dengan larutan asam dan larutan ekstrak kulit manggis untuksampel awal. Analisa SEM dilakukan pada baja yang telah direndam. Kandungan tanin yangterbesar terdapat pada ekstrak kulit manggis dengan pelarut etanol adalah 1 : 10 dengankadar 28,05 mg/100g. Nilai efisiensi inhibisi ekstrak kulit manggis pada media korosif larutanH 2 SO 4 1M sebesar 38,74% pada konsentrasi 300 ppm dengan waktu perendaman 9 jam.
Strategies for Clean Production in Methyl Isocyanate Synthesis for Pesticide Raw Materials Faisal, Deni; Sulaiman, Fatah; Pramudita, Marta
Rekayasa Vol. 21 No. 1 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v21i1.15782

Abstract

The increasing demand for pesticides in agriculture has led to a rise in the production of methyl isocyanate, a key intermediate in carbamate pesticide manufacturing. However, this process generates sodium sulfate as a by-product, dissolved in an aromatic solvent, which, if not adequately managed, contributes to environmental pollution and resource inefficiency. Chemical and environmental engineering are crucial in addressing this issue by developing effective separation and recovery methods. One potential solution is the distillation process, which separates sodium sulfate based on boiling point differences with water. However, the effectiveness of this method depends on operational conditions, particularly pressure and sulfuric acid concentration. This research focuses on optimising the recovery of sodium sulfate from methyl isocyanate production waste by investigating different operating pressures (atmospheric, vacuum, and combined) and sulfuric acid concentrations (0 M, 0.07 M, 0.15 M, 0.22 M, and 0.30 M). A recovery efficiency of sodium sulfate as high as 92.5% using vacuum distillation at a 0.22 M sulfuric acid concentration. Additionally, the condensate water contained 98.7% purity, making it suitable as a precursor for struvite fertiliser. Sodium sulfate is used as a raw material in producing insecticidal pesticides, with a purity level of 97.3%. This study demonstrates that an optimised distillation process can enhance the efficiency of pesticide production by minimising waste and maximising resource utilisation, contributing to cost efficiency and environmental in industrial pesticides.
PENGEMBANGAN INOVASI PANGAN LOKAL PADA PEMBUATAN TEPUNG JAMUR TIRAM DI KELOMPOK TANI HUTAN MEKAR HASANAH LEBAK-BANTEN Agustina, Sri; Pitaloka, Alia Badra; Pramudita, Marta
Nemui Nyimah Vol. 1 No. 2 (2021): Nemui Nyimah
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/nm.v1i2.11

Abstract

Budi daya jamur tiram (Pleurotus ostreatus) merupakan salah satu usaha pangan pertanian di kabupaten Lebak, Banten yang dikembangkan oleh Kelompok Tani Hutan dibawah pembinaan Dinas Lingkungan Hidup dan Kehutanan Provinsi Banten. Salah satunya adalah Kelompok Tani Hutan Mekar Hasanah dari kampung Cihelang, Rangkasbitung, Lebak. Jamur tiram memiliki daya simpan yang cukup rendah karena mudah mengalami kerusakan setelah dipanen.Salah satu cara untuk memperpanjang umur simpan jamur tiram adalah melalui proses pengolahan menjadi produk pangan yang baru, seperti tepung serbaguna. Melalui kegiatan pengabdian kepada masyarakat ini, masyarakat Kelompok Tani Hutan Mekar Hasanah diberikan pengarahan mengenai cara pengolahan jamur tiram menjadi tepung. Tepung yang diperoleh melalui proses pengolahan jamur tiram ini dapat digunakan dalam berbagai macam jenis makanan olahan dan memiliki nilai gizi yang baik.
Empowering Rural Housewives Through Creative Packaging Design: The Case of Beneng Taro Products in Juhut Village, Banten Agustina, Sri; Ummi, Nurul; Rahman, Arief; Pramudita, Marta; Al Aziz, Muhammad Daffa; Priyatna, Aufa Irsyad
SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Vol. 6 No. 2 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/spekta.v6i2.14467

Abstract

Background: This community service program was conducted in Juhut Village, Pandeglang, Banten, to address limited market access of Beneng taro-based food products produced by local housewives. Despite abundant raw materials, product competitiveness remains low due to unsafe processing practices and poor packaging design. Contribution: This program bridges the gap between product quality and consumer trust by integrating food safety education with creative packaging innovation. It offers a participatory model that strengthens visual identity, labeling compliance, and branding for rural microenterprises. Method: The program applied a participatory approach involving 20 local women from the Sendaloka group. Activities included technical training on oxalate reduction techniques, visual communication in packaging, and safe food processing. Results: The initiative led to the development of Talaschips, a branded Beneng taro chip product with complete labelling, health claims, and consumer-oriented design. Evaluation showed a 65% increase in knowledge based on post-training interviews, and more than 30% of participants expressed intent to register their products for food certification. Conclusion: The program effectively empowered rural women by improving their technical and design capabilities. It fostered self-recognition as legitimate entrepreneurs and improved market access for local food products. The model is scalable and can be adapted to other rural settings for inclusive economic development and gender-equitable entrepreneurship.
Co-Authors Al Aziz, Muhammad Daffa Alia Badra Pitaloka, Alia Badra Arief Rahman Faisal, Deni Hendri Juliansyah, Hendri Muhammad Andre Rizki, Muhammad Andre Nurul Ummi Priyatna, Aufa Irsyad Sri Agustina, Sri Sulaiman, Fatah