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All Journal Jurnal Teknik ITS Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Maksipreneur: Manajemen, Koperasi, dan Entrepreneurship Madaniya Formosa Journal of Applied Sciences (FJAS) Abdi Teknoyasa Journal of Biobased Chemicals (JOBC) AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Inovasi Daerah Jurnal Rekayasa Proses
Arnesya Ramadhani
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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Aspects Supporting Lecturers’ Scientific Publications as Educational Development in Universities Dina Prasetyaningrum; Arnesya Ramadhani; Dini Novi Rohmah
Jurnal Maksipreneur Vol 15 No 2 (2026)
Publisher : Universitas Proklamasi 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jmp.v15i2.2614

Abstract

Social Exchange Theory examines how people interact within a group or company. It focuses on how workers think and make decisions based on fair treatment and trust in their leaders. When workers feel their relationships are built on fairness and mutual respect, they are more likely to put in their best effort. The study shows the importance of examining how managers lead, how much work lecturers have, and how they are rewarded in higher education to help them publish more scientific work. The findings suggest that transformational leadership and rewards are significantly associated with lecturers' performance in scientific publications, indicating that higher levels of these factors correlate with improved performance. The workload variable shows a negative link between workload and lecturers' scientific publication performance. This means that as the workload increases, the quality or amount of scientific publications decreases because the workload is too heavy for their abilities. If rewards can support such a large workload under social exchange theory, lecturers' scientific publication performance will also increase.
Utilization of Fly Ash as a Coagulant in the Coagulation Process of Coal Yard Wastewater Fajri Wan Hidayat; Ramadhani, Arnesya; Ichya Musytafizur Ziqri; Siti Khuzaimah
Journal of Biobased Chemicals Vol. 6 No. 1 (2026): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jobc.v6i1.60006

Abstract

Coal yard wastewater is an industrial effluent characterized by high turbidity, high total suspended solids (TSS), and acidic pH, which may cause environmental pollution if discharged without proper treatment. One commonly applied treatment method is coagulation; however, the use of conventional chemical coagulants may increase operational costs and sludge generation. This study aims to evaluate the use of fly ash as an alternative coagulant for treating coal yard wastewater. Fly ash was activated using sulfuric acid (H2SO4) at concentrations of 1%, 3%, 5%, 7%, 10%, and 15%. The coagulation process was conducted using coagulant dosages of 2 mL and 4 mL per 500 mL of wastewater. The analyzed parameters included pH, turbidity, and total suspended solids (TSS). The results showed that activated fly ash significantly reduced turbidity and TSS by up to approximately 80%. The optimum performance was achieved at fly ash activation concentrations of 5% and 7%. These results indicate that fly ash has strong potential as an effective, economical, and environmentally friendly alternative coagulant for coal yard wastewater treatment.
Pengaruh Material Fly Ash Dan Zeolit Pada Alat Filtrasi SIFA Terhadap Penurunan Biochemical Oxygen Demand (BOD) Dalam Limbah Domestik Sigit Suwarto; Frida Amriyati Azzizzah; Arnesya Ramadhani; Christian Soolany; Virgiawan Listanto; Kharismatun Nafa
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 9 No. 2 (2023)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v9i2.225

Abstract

Indonesia merupakan negara yang padat penduduk sehingga jumlah air limbah yang dihasilkan semakin meningkat, terutama limbah domestik yang merupakan limbah cair buangan yang berasal dari kegiatan rumah tangga. Sehingga dengan kondisi ini, kebutuhan akan air bersih menjadi sangat vital. Langkah alternatif yang digunakan untuk mengurangi limbah domestik dan memperoleh air yang lebih bersih adalah dengan penggunaan proses filtrasi. Proses filtrasi tersusun atas beberapa media filter yang digunakan untuk mengadsorbi polutan-polutan dari limbah cair. Penelitian ini dilakukan dengan tujuan untuk mengetahui waktu optimum pada proses filtrasi menggunakan absorben fly ash batubara dan zeolit. Parameter yang menjadi tinjauan adalah kadar Biochemical Oxygen Demand (BOD) dan pH pada limbah domestik pondok pesantren Al-Ihya Ullumadin Kecamatan Kesugihan, Kabupaten Cilacap. Media filter yang digunakan tersusun dari 5 lapisan yaitu kerikil, ijuk, zeolit, pasir dan fly ash. Tahapan kerja pada penelitian ini yaitu mencari waktu filtrasi yang optimum dari variasi waktu 90, 150 dan 210 menit. Filtrat yang dihasilkan diuji kadar BOD dan pH. Hasil analisis menunjukkan waktu filtrasi yang paling optimum adalah 90 menit, menghasilkan penurunan BOD dari 13.294 mg/L menjadi 199 mg/L, yang berarti terjadi penurunan BOD sebesar 98,5% dan pH menurun dari 7 menjadi 6,5. Kata kunci :  biochemical oxygen demand; filtrasi; fly ash; limbah domestik; zeolit.
Co-Authors Aji Kusumastuti Hendrawan Anisha Dian Iswahyuni Azzizzah, Frida Amriyati Badril Azhar Dina Prasetyaningrum Dini Novi Rohmah Dini Novi Rohmah Dini Novi Rokhmah Fajri Wan Hidayat Happy Ayu Puspa Sari Happy Ayu Puspa Sari Ichya Musytafizur Ziqri Kharismatun Nafa Kharismatun Nafa Manasikana, Arina Nani Kurniasih Nur Alimah, Gustin Nyamiati, Retno Dwi Sigit Suwarto Siti Khuzaimah Siti Khuzaimah Siti Nurkhamdah Sonya Hakim Raharjo Soolany, Christian Virgiawan Listanto Virgiawan Listanto Yeni Rahmawati, Yeni