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All Journal Jurnal Ilmu Lingkungan Berkala Ilmiah Pertanian Geoplanning : Journal of Geomatics and Planning Rekayasa Sipil Jurnal Dampak Jurnal Ilmu Alam dan Lingkungan Jurnal Pembangunan Berkelanjutan Turast: Jurnal Penelitian dan Pengabdian JAIM (Jurnal Abdi Masyarakat) Geodika: Jurnal Kajian Ilmu dan Pendidikan Geografi Jurnal EnviScience (Environment Science) PREPOTIF : Jurnal Kesehatan Masyarakat Jurnal Sains Agro Spizaetus: Jurnal Biologi dan Pendidikan Biologi Jurnal Abdimas Berdaya : Jurnal Pembelajaran, Pemberdayaan dan Pengabdian Masyarakat Jurnal Mandala Pengabdian Masyarakat Jurnal Jaring SainTek Journal of Industial Engineering and Technology Baselang: Jurnal Ilmu Pertanian, Peternakan, Perikanan dan Lingkungan Environmental Engineering Journal ITATS De`Teksi : Jurnal Teknik Sipil Journal of Emerging Science and Engineering GeoEco Advances in Tropical Biodiversity and Environmental Sciences Analit: Analytical And Environmental Chemistry LEMBAH: Jurnal Pengabdian Masyarakat
Heri Mulyanti
Program Studi Ilmu Lingkungan, Fakultas Sains Dan Teknik, Universitas Bojonegoro
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Pemanfaatan Biochar Sekam Padi sebagai Agen Reduksi Kandungan Merkuri (Hg) pada Air Lindi Adinda Dhayu Anggraini; Heri Mulyanti; Nindy Callista Elvania
Environmental Engineering Journal ITATS Vol 6, No 1 (2026): Environmental Engineering Journal ITATS
Publisher : Teknik Lingkungan, Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.envitats.2026.v6i1.8683

Abstract

Air lindi yang dihasilkan dari proses dekomposisi sampah di Tempat Pemrosesan Akhir (TPA) berpotensi mengandung logam berat berbahaya, salah satunya merkuri (Hg), yang dapat mencemari lingkungan apabila tidak dikelola dengan baik. Salah satu metode yang dapat digunakan untuk menurunkan kadar Hg dalam air lindi adalah proses adsorpsi menggunakan biochar berbahan limbah pertanian. Penelitian ini bertujuan untuk menganalisis efektivitas biochar sekam padi teraktivasi dalam menurunkan kadar merkuri (Hg) pada air lindi, menentukan waktu kontak yang paling efektif, serta mengevaluasi kesesuaian hasil pengolahan dengan baku mutu air lindi berdasarkan Peraturan Menteri Lingkungan Hidup dan Kehutanan Nomor 59 Tahun 2016. Penelitian dilakukan secara eksperimental dengan metode adsorpsi batch menggunakan variasi dosis biochar sekam padi teraktivasi sebesar 15 g dan 30 g, serta variasi waktu kontak 120 menit dan 180 menit pada suhu ruang. Hasil penelitian menunjukkan bahwa seluruh perlakuan mampu menurunkan kadar Hg pada air lindi. Efisiensi penurunan tertinggi diperoleh pada dosis biochar 15 g dengan waktu kontak 120 menit, yaitu sebesar 48,65%. Seluruh hasil pengolahan menunjukkan kadar Hg akhir berada di bawah baku mutu yang ditetapkan. Biochar sekam padi teraktivasi berpotensi digunakan sebagai adsorben ramah lingkungan dan berbasis limbah lokal untuk pengolahan air lindi. Kata kunci: adsorpsi, air lindi, biochar, merkuri, sekam padi
Analisis Konsentrasi CO2 di Kawasan Pasar Wisata Bojonegoro Evi Cici Kumala; Heri Mulyanti; Solikhati Indah Purwaningrum
Spizaetus: Jurnal Biologi dan Pendidikan Biologi Vol 6 No 2 (2025): Spizaetus: Jurnal Biologi dan Pendidikan Biologi
Publisher : Program Studi Pendidikan Biologi, FKIP, Universitas Nusa Nipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55241/spibio.v6i2.553

Abstract

Carbondioxide (CO?) is one of the greenhouse gases that contribute to climate change and global warming. Indoor and urban CO? concentrations can affect air quality and human health. Pasar Wisata Bojonegoro is a central economic hub with high mobility and trading activities, which may increase CO? emissions. This study aims to identify peak CO? concentration hours in the area and compare them with the air quality standards set by the WHO. A quantitative research method was used, involving direct observation and measurement over 7 (seven) days at a single observation point. The results show that on weekdays, the peak CO? concentration occurred between 16:00 and 16:59 WIB, reaching 424 ppm, while the lowest concentration was recorded between 18:00 and 18:59 WIB at 351 ppm. On weekends, the peak concentration was 441 ppm between 16:00 and 16:59 WIB, while the lowest was 113 ppm between 21:00 and 21:59 WIB. Several weekdays recorded CO? concentrations exceeding the WHO standard (310–330 ppm), with the highest reaching 466 ppm. However, CO? concentrations on Thursdays and weekends remained within the acceptable limits. The conclusion of this study shows that the results of CO? concentration on weekdays (Monday, Tuesday, Wednesday, Friday) exceed the quality standard with CO? concentrations of 466 ppm, 462 ppm, 413 ppm, and 433 ppm. Meanwhile, on weekdays (Thursdays) and weekends, it meets the quality standards with CO? concentrations of 217 ppm, 243 ppm, and 267 ppm.
Co-Authors A. P. Rimansa, Salwa Adinda Dhayu Anggraini Agustiana, Elsa Ahmad Niamul Abrori Amalia, Faza Amalia, Isna Nur Anggraini, Adinda Dhayu Anggraini, Sholikhah Risqi Dwi Ayu Kurnia Ratna Sari Ayu Pebiola, intan Bagus Saputra Callista E, Nindy Eka Luluk Fitriani Eka Luluk Fitriani Elana Firdayanti Elika Febriati Elsa Agustiana Elvania, Nindy Callista Endi Adriansyah Eric Apriliawan Saputra Evi Cici Kumala Evi Cici Kumala Exta, Febri Febri Novita Sari fjasmine, Marshada Harjono Harjono I. Istadi Ilham Muchtar Ashari Intan Ayu Pebiola Intan Ayu Pebiola Istadi Luky Wahyu Saputra Mahendra Kusuma, Rieza Mrabawani Insan Rendra Nabila Nalalizza Nalalizza, Nabila Nindy Callista Elvania Nindy Callista Elvania Oktavianus Cahya Anggara Putri Astin Ningrum Rahmat Gernowo Rahmat Gernowo Rahmawati, Laily Agustina Reva Putri Sugianti Risqi Dwi Anggraini, Sholikhah Rizaliansyah, Moh. Ainun Rizky Stighfarrinata, ST., MT. Romadhoni, Novita Santi Amanda Tiara Putri Saputra, Akbar Andis Sari, Andini Ratna Solikhati Indah Purwaningrum Solikhati Indah Purwaningrum Uswatun, Winda Wibowo, Candra Guruh Adi Wisnujati, Andika Yenny Sri Margiani