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All Journal Jurnal Rekayasa Proses Bulletin of Chemical Reaction Engineering & Catalysis Indonesian Journal of Science and Technology JURNAL KONVERSI Indonesian Journal of Chemistry Warta Pengabdian CHEESA: Chemical Engineering Research Articles Jurnal Rekayasa Proses Makara Journal of Science Journal of Biobased Chemicals (JOBC) InSTEM Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Rekayasa Proses
Felix Arie Setiawan
Department Of Chemical Engineering, Faculty Of Engineering, University Of Jember, Jalan Kalimantan No.37, Krajan Timur, Sumbersari, Kabupaten Jember, Jawa Timur 68121, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Physics Social Sciences Other

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Studi Awal Pembuatan Membran Chitosan-Silica Based dari Berbagai Limbah Setiawan, Felix Arie; Arimbawa, I Made; Putri, Navisa Ayudia; Fachri, Boy Arief
CHEESA: Chemical Engineering Research Articles Vol. 3 No. 1 (2020)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.595 KB) | DOI: 10.25273/cheesa.v3i1.5701

Abstract

Jember memiliki potensi perikanan terutama udang sebagai sumber kitin yang merupakan dasar pembuatan kitosan. Kitosan berasal dari limbah kulit udang yang dicampur dengan limbah lain yaitu padatan silika dari Pembangkit Listrik Panas Bumi dan fly ash dari Pembangkit Listrik Tenaga Uap untuk menghasilkan membran yang dapat digunakan dalam filtrasi logam berat dalam air. Membran tanpa silika dibuat sebagai negative control dan dengan silika murni sebagai positive control. Membran kitosan dibuat dengan cara mencampurkan 1,0 gram kitosan dalam 100 mL larutan asam asetat 2% v/v dan 0,8 gram senyawa silika serta 0,5 gram polyethylene glycol. Membran yang telah dibuat diuji untuk menyaring larutan yang mengandung logam berat Cu dan Pb. Konsentratsi optimum dari Cu dan Pb dalam badan cairan dapat dikurangi sebesar 87% dan 80% menggunakan membran kitosan-silika.
Implementation of Appropriate Technology for Durian Peel Waste Extractor in Rowosari Village to Realise An Independent Village for Green Economy Kamiliah, Thiflatul; Taufiqurrohman, Muhammad; Arkan, Naufal; Brilianto, Mochamad Syadam; Alfarizi, Muhammad Alfian; Ahmad Reza Maulufi; Septiana, Windi Yudita; Syawaludin, Syafriel Razaan; Saputra, Dicky Aditya; Nurkholisah, Siti; Setiawan, Felix Arie; Rahmawati, Istiqomah
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 3 No. 1 (2025): Mei
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v3i1.1626

Abstract

The University of Jember's Student Village Program (Promahadesa) was implemented in Pringpadhu Hamlet, Rowosari Village, Sumberjambe District, Jember Regency, with the aim of overcoming the problem of durian peel waste that has not been utilized and causes environmental pollution. This activity aims to process the waste into products of economic value through the application of appropriate technology tools (TTG) in the form of extractors. The method used in this activity is Participatory Action Research (PAR), which involves the community actively in all stages of the activity, from problem identification, planning, implementation, to evaluation. The implementation of activities includes: design and assembly of household scale extractor tools, pretreatment of durian skin waste, the process of making dish soap and liquid organic fertilizer (POC), as well as socialization and demonstration of tools to the community. The results of this activity are the creation of TTG extractor tools and two main processed products, namely dish soap and POC, which are produced from durian skin distillate. The conclusion of this activity shows that the application of technology can increase community knowledge, minimize environmental pollution, and potentially add local economic value through the utilization of waste into village superior products.
A Comparison of Unconventional Microwave and Ultrasound-Assisted Extraction Methods used for Flavonoids Rahmawati, Istiqomah; Azizi, Daffa Hafiziaulhaq; Wibowo, Jihan Nafila; Reza, Muhammad; Fachri, Boy Arief; Palupi, Bekti; Rizkiana, Meta Fitri; Amini, Helda Wika; Ramadana, Ifan; Setiawan, Felix Arie
Makara Journal of Science Vol. 29, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Cocoa pods (Theobroma cacao L.) are a rich source of flavonoids, which are natural antioxidants known for their health benefits. This study investigated the use of microwave-assisted extraction (MAE) and ultrasound-assisted ex-traction (UAE) to extract the maximum flavonoids and antioxidants from cocoa pods. MAE and UAE are efficient and sustainable methods for extracting bioactive compounds like flavonoids and antioxidants from cocoa pods, offer-ing faster extraction, reduced solvent use, and better compound preservation compared to conventional methods. These technologies unlock the untapped potential of cocoa pods for applications in food, cosmetics, and pharmaceuti-cals. The effects of extraction time (2–10 min), microwave power (100–300 W), and the ratio of cocoa husk powder to solvent (0.02–0.06 g/mL) were evaluated for MAE. Meanwhile, for UAE, different temperatures (30–50 °C), times (10–30 min), and powers (16–48 W) were studied. The Design-Expert® software with Response Surface Methodology (RSM) and a Box-Behnken Design was utilized to analyze the effects of a combination of these parameters. The re-sults showed that extraction time, microwave power, and the ratio of cocoa husk powder–solvent significantly affected the total flavonoid yield and antioxidant capacity. The highest total flavonoid yield obtained by the MAE method (123.07 ppm) was at an extraction time of 10 min, cocoa husk–solvent ratio of 0.06 mg/mL, and microwave power of 300 W. The extract obtained by the MAE method showed an excellent antioxidant capacity of 43.49 mg/mL GAEAC, and a robust antioxidant activity indicated by an IC50 value of 42.19. Conversely, the highest total flavonoid yield of the UAE method (8.45 mg/mL GAEAC) was achieved at 30 min, 40 °C, and 40 W. The extract from the UAE method demonstrated a better antioxidant capacity (7.51 mg/mL GAEAC) and antioxidant activity (IC50 value of 23.46) than that from the MAE technique
Co-Authors Agus Prasetya Ahmad Reza Maulufi Alfarizi, Muhammad Alfian Ambrosius Aditya Ambrosius Aditya Antoko Ari Susanti Arkan, Naufal Atiqa Rahmawati Azizi, Daffa Hafiziaulhaq Bekti Palupi Boy Arief Fachri Brilianto, Mochamad Syadam Conny Julanda Ayanie Conny Julanda Ayanie Ditta Kharisma Yolanda Putri Edia Rahayuningsih Halomoan Siagian Helda Wika Amini Helda Wika Amini Heru Pratomo Al Himawan Bayu Petrus Himawan Tri Bayu Murti Petrus Himawan Tri Bayu Murti Petrus I Made Arimbawa Isana Supiah Yosephine Louise Istiqomah Rahmawati Istiqomah Rahmawati Kamiliah, Thiflatul Meta Fitri Rizkiana Muhammad Reza Muhammad Taufiqurrohman, Muhammad Muharja, Maktum Nurkholisah, Siti Putri, Navisa Ayudia Ramadana, Ifan Rizki Fitria Darmayanti S. Sulistyani Saputra, Dicky Aditya Septiana, Windi Yudita Siti Marwati Syawaludin, Syafriel Razaan Wibowo, Jihan Nafila Yosephine Intan Ayuningtyas Yosephine Intan Ayuningtyas