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All Journal Rekayasa Mesin Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian Jurnal IPTEK Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Journal of Research and Technology SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan IJEMS (Indonesian Journal of Environmental Management and Sustainability) Chemistry Indonesian Journal of Chemical Research ASEAN Journal of Community Engagement G-Tech : Jurnal Teknologi Terapan Abdimasku : Jurnal Pengabdian Masyarakat Nusantara Science and Technology Proceedings Community Empowerment Envirous AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Pengbdian Teknik Mesin Madani: Jurnal Pengabdian Masyarakat dan Kewirausahaan JURNAL REKAYASA KIMIA & LINGKUNGAN
Pujiastuti, Caecilia
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Inovasi Pembuatan Biobriket dari Limbah Kotoran Sapi di Desa Kalipucang, Kecamatan Tutur, Pasuruan Erlinda, Riska Melati; Annisa Anwar, Miranda; Pujiastuti, Caecilia; Pertiwi, Beta Cahaya
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 11 No. 3 (2025): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.11.3.534-542

Abstract

The community development program implemented in Kalipucang Village, Tutur District, Pasuruan Regency, aims to assist residents in utilizing cow manure waste by producing environmentally friendly biobriquettes. The activities involved a series of steps, including drying the cow manure, burning, mixing with binders, and molding the biobriquettes. The results of this program show that biobriquettes made from cow manure have a longer burning time compared to conventional charcoal. This program has successfully enhanced residents' skills in waste management, opened new economic opportunities, and promoted the use of alternative energy sources. Overall, the program demonstrates that support from the village government and continuous training is essential to ensure the ongoing development and benefits of the biobriquette enterprise in the village.
Optimization of Acetone Concentration and Reflux Ratio for Enhanced Oil Extraction from Spent Bleaching Earth: A Response Surface Methodology Approach Monica, Clarissa Putri; Anggraeni, Verendria Putri Caesar; Sumada, Ketut; Sari, Ni Ketut; Pujiastuti, Caecilia
Indonesian Journal of Environmental Management and Sustainability Vol. 9 No. 4 (2025): December
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2025.9.4.183-191

Abstract

Spent bleaching earth with an oil content exceeding 3% is classified as hazardous and toxic waste, requiring appropriate processing prior to environmental disposal. Extraction is one effective method for processing spent bleaching earth. This study focuses on the optimization of oil extraction from spent bleaching earth using acetone as a solvent, specifically analyzing the effects of solvent concentration and reflux ratio on oil recovery efficiency and evaluating the quality of recovered bleaching earth for potential reuse in vegetable oil refining processes. The extraction method employed was soxhlet extraction using acetone as the solvent. Five different acetone concentrations (50%, 60%, 70%, 80%, and 90%) were tested in combination with five reflux ratios (2, 3, 4, 5, and 6), creating a total of 25 experimental conditions. Response surface methodology (RSM) was utilized to optimize these parameters and identify the ideal conditions for maximum oil recovery. The experimental design and statistical analysis were conducted using Design Expert 13.0.5.0 software. The quality of recovered bleaching earth was assessed against Indonesian National Standards (SNI) for potential reuse applications. The optimization results indicated optimal conditions of 69.15% acetone concentration and a reflux ratio of 4, yielding a maximum oil recovery rate of 17.52%. Analysis of the recovered bleaching earth showed that while it met most SNI standards for bleaching earth quality parameters, the pH remained acidic (below neutral), indicating that alkaline pretreatment would be necessary before the material could be effectively reused in vegetable oil bleaching processes. The study demonstrates that acetone-based soxhlet extraction can effectively recover oil from spent bleaching earth while producing a secondary product suitable for reuse after appropriate pH adjustment.
Co-Authors Achmad Rizal Afandi, Fadila Ardiansyah Alwansyah, Yuki Amru Amanda, Nabila Ayu Angelia Tantyono Anggoro, Achmad Rahditya Viman Anggraeni, Verendria Putri Caesar Annisa Anwar, Miranda Anugerah Dany Priyanto, Anugerah Dany Arianti, Rahma Dea Rerindra Arief S, Purwanto Aththobarani, Muhammad Daffa' Azka, Salsabilla Betafachreza, Aditya Fadhilaskha Chakim, M. Ghufron Djarwatiningsih, Djarwatiningsih Egita Yulisningtyas Erfani, Rif’atul Firda Erlinda, Riska Melati Erliyanti, Nove Erliyanti, Nove Kartika Fadilah, Muhammad Fajrin, Alifah Nur Aini Fernanda, Moza Ayu Hafiza, Putri Nur Hamzah, Maditya Amirul Hidayah, Bimantara Ira Pareira Ketut Sumada Caecillia Pujiastuti Kindriari Nurma Wahyusi Kusuma, Prasdinata Meidaus Lisa Rizky Amalia Maharani, Hijria Putri Moenandar, Siswanto Monica, Clarissa Putri Muchamad, Raka Selaksa Charisma Muhammad Septianto Nana Dyah Siswati, Anwar Zain and Mohammad Ni Ketut Sari Nofitasari, Luluk Novianah, Delia Indah Panjaitan, Legipson Panjaitan, Renova Pertiwi, Beta Cahaya Pradana, Alfian Rizki Puput Srianah, Puput Srianah Puspitasari, Indah Maharani Putra, Andre Yusuf Trisna Putra, Andreansyah Brilliant Putra, Boni Mulia Putra, Sandy Buana Putri, Megawati Setiawan Rachmawati, Fadiatul Rizqullah, Rafitrah Rohmah, Aisyah Alifatul Zahidah Royyan, Irham Alva Soemargono Soemargono SRIE MULJANI Suprianti, Lilik Suprihatin Susilowati Susilowati Syahrani, Alza Nadilla triani, nova Trianna, Nurul Widji Wicaksono, Akhmad Permadi Widya P, Vika Wira, Guardiola Rosa Yustina Ngatila Yustina Ngatilah Zain, Tama Rahmandha