Envirotek : Jurnal Ilmiah Teknik Lingkungan https://envirotek.upnjatim.ac.id/index.php/envirotek <p>Envirotek : Jurnal Ilmiah Teknik Lingkungan is scientific journal published by Department of Environmental Engineering, Universitas Pembangunan Nasional “Veteran” Jawa Timur. Our journal accredited <a href="https://drive.google.com/file/d/1GwLKM6U8gep1g3Z7z2g5Io_9GwfhMmvl/view">SINTA 3 by Kemendikbud</a> and indexed in <a href="https://garuda.kemdikbud.go.id/journal/view/25387">Garuda</a> with P-ISSN <a href="https://issn.brin.go.id/terbit/detail/1328775969">2085-501X</a> and E-ISSN <a href="https://issn.brin.go.id/terbit/detail/1532312690">2623-1336</a> published twice a year, in April and October. This journal aimed to inform its readers about all aspects of environmental issues related to environmental engineering, science and management.</p> Universitas Pembangunan Nasional Veteran Jawa Timur en-US Envirotek : Jurnal Ilmiah Teknik Lingkungan 2085-501X Bioremediasi Lahan Sawah Terkontaminasi Oli Bekas Menggunakan Teknik Pengomposan Secara Ek-Situ https://envirotek.upnjatim.ac.id/index.php/envirotek/article/view/1937 <p><span style="vertical-align: inherit;"><span style="vertical-align: inherit;">Penggunaan oli bekas sebagai bahan tambahan senyawa pestisida untuk mengusir hama pada pertanian padi di Kabupaten Karawang berpotensi menyebabkan kontaminasi tanah oleh hidrokarbon yang bersifat toksik. Salah satu upaya pemulihan yang dapat diterapkan adalah bioremediasi menggunakan teknik pengomposan yang memanfaatkan jerami pasca panen dan kapur dolomit sebagai bahan baku kompos. Penelitian sampel bersifat eksperimen, dimana tanah diambil pada sawah seluas 0,15 ha sebanyak 9 (sembilan) titik pada kedalaman 0,00-30,00 cm yang kemudian dikomposit menjadi satu. Proses pengomposan dilakukan dengan mencampurkan tanah dan bahan baku kompos (rasio 1:1, b/b) menggunakan 5 (lima) variasi yaitu kontrol tanah (tanah 4.500 g), kontrol jerami (4.500 g), A (tanah:jerami:dolomit sebanyak 4.500 gr: 4.410 gr: 90 gr), B (tanah:jerami:dolomit sebanyak 4.500 gr: 4.275 g: 225 g): dan C (tanah:jerami:dolomit sebanyak 4.500 g: 4.050 g: 450 g) dengan 3 (tiga) ulangan selama 30 hari. Hasil penelitian menunjukkan bahwa nilai pH, suhu, dan kelembaban semua rekator berada pada rentang optimal yaitu 5,07-6,43; 33,00-40,00°C; 50,00-70,00%. Kondisi tersebut mendukung terjadinya biodegradasi bahan organik melalui kadar hidrokarbon, dimana penurunan tertinggi ditemukan pada variasi C sebesar 66,22%.</span></span></p> GINA LOVA SARI ANNISA NUR SAFITRI Copyright (c) 2025 GINA LOVA SARI, ANNISA NUR SAFITRI https://creativecommons.org/licenses/by/4.0 2025-06-23 2025-06-23 17 1 Tofu Wastewater Treatment and Bioelectricity Production Potential by Combining Anaerobic Baffled Reactor and Microbial Fuel Cells https://envirotek.upnjatim.ac.id/index.php/envirotek/article/view/2050 <p><em>Anaerobic Baffled Reactor (ABR) systems have only been utilized to reduce pollutant compounds in wastewater. Anaerobic conditions in ABR can double as an anode chamber in Microbial Fuel Cells (MFCs) which require anaerobic conditions. This study aims to test the ability of COD and TSS removal in tofu wastewater and the potential electricity generated from a combination unit of ABR and MFCs. The experiment was conducted on a laboratory scale using a continuous system for 96 hours. ABR reactor was made consisting of 5 compartments, where the second compartment was installed anode for MFCs. The cathode chamber of the MFCs system was made separate from the ABR reactor and filled with electrolyte solution. The anode chamber in the ABR and the cathode chamber are connected by a salt bridge. Electrodes used in MFCs are zinc as anode and copper as cathode. The removal of pollutants in tofu wastewater reached 55.85% for COD and 88.68% for TSS. The electrical potential of MFCs increases along with the increase of organic matter removal in wastewater. The electric voltage generated reached 0.94 V and electric current 0.40 mA. The power density generated in this MFCs system reached 94 mW/m².</em></p> Syadzadhiya Qothrunada Zakiyayasin Nisa' Restu Hikmah Ayu Murti Achmad C. Ni'am Praditya Sigit Ardisty Sitogasa Elysia C. Wibowo Copyright (c) 2025 Syadzadhiya, Restu Hikmah Ayu Murti, Achmad C. Ni'am, Praditya Sigit Ardisty Sitogasa, Elysia C. Wibowo https://creativecommons.org/licenses/by/4.0 2025-06-21 2025-06-21 17 1 7 11 10.33005/envirotek.v17i1.2050