H. Akhmad Muntaha, S.Pd., MM Dosen Pembimbing 2 H. Haitami, M.Sc Ketua Penguji Neni Oktiyani, M.Sc Dosen Pembimbing 1 Fakhir Surya Adha Pengarang

ABSTRAK Pengaruh Arang Aktif dari Tulang Ikan Gabus (Channa striata) terhadap Kadar Besi Total pada Air Sungai Desa Mekar Sari Kecamatan Tatah Makmur Kabupaten Banjar Pembimbing: Neni Oktiyani, Akhmad Muntaha Kandungan besi (Fe) yang ditemukan di Air Sungai Desa Mekar Sari Kecamatan Tatah Makmur Kabupaten Banjar Provinsi Kalimantan Selatan masih cukup tinggi yaitu sebesar 1,04 mg/L, sedangkan baku mutu yang dianjurkan adalah maksimal 0,3 mg/L. Arang aktif dapat mengadsorpsi ion ferro dan ion ferri, tergantung pada besar atau volume pori-pori dan luas permukaan. Tulang ikan gabus (Channa striata) mengandung karbon amorph, sehingga dapat digunakan sebagai bahan untuk membuat arang aktif. Tujuan penelitian ini adalah untuk mengetahui pengaruh arang aktif tulang ikan gabus terhadap kadar besi total pada Air Sungai Desa Mekar Sari Kecamatan Tatah Makmur Kabupaten Banjar. Jenis penelitian ini yaitu eksperimen dengan rancangan penelitian yang digunakan adalah desain pretest-posttest. Pretest adalah pengukuran kadar besi total sebelum penambahan arang aktif (0 g) tulang ikan gabus (Channa striata), sedangkan posttest adalah pengukuran kadar besi total setelah penambahan arang aktif tulang ikan gabus sebanyak 1 g, 2 g, 3 g, 4 g dan 5 g. Hasil penelitian menunjukkan rata-rata kadar besi total yang diberi perlakuan perendaman selama 60 menit dengan massa 0 g = 0.38 mg/L, 1 g = 0.32 mg/L, 2 g = 0.28 mg/L, 3 g = 0.185 mg/L, 4 g = 0.11 mg/L, dan 5 g = 0.07 mg/L. Kesimpulan penelitian ini adalah terdapat pengaruh arang aktif tulang ikan gabus terhadap besi besi total dalam air sungai. Penelitian dapat dilanjutkan tentang variasi metode perendaman arang aktif terhadap kadar besi total. Kata kunci: Arang aktif, tulang ikan gabus, kadar besi total, air sungai. ABSTRACT Effect of Activated Charcoal from Snakehead Fish Bone (Channa striata) on Total Iron Levels in River Water in Mekar Sari, Tatah Makmur District, Banjar Regency Advisor: Neni Oktiyani, Akhmad Muntaha The iron (Fe) content found in the river water of Mekar Sari Village, Tatah Makmur District, Banjar Regency, South Kalimantan Province is still quite high, namely 1.04 mg/L, while the recommended quality standard is a maximum of 0.3 mg/L. Activated charcoal can adsorb ferrous ions and ferric ions, depending on the size or volume of the pores and surface area. Snakehead fish bone (Channa striata) contains amorphous carbon, so it can be used as an ingredient to make activated charcoal. The purpose of this study was to determine the effect of activated charcoal from snakehead fish bones toward total iron levels in the River Water of Mekar Sari Village, Tatah Makmur District, Banjar Regency. This type of research is experimental with the research design used is the pretest-posttest design. The pretest was a measurement of the total iron content before the addition of activated charcoal (0 g) of snakehead fish bone (Channa striata), while the posttest was a measurement of the total iron content after the addition of 1 g, 2 g, 3 g, 4 g, and 5 g of snakehead fish bone activated charcoal. The results showed that the average total iron content was treated by soaking for 60 minutes with a mass of 0 g = 0.38 mg/L, 1 g = 0.32 mg/L, 2 g = 0.28 mg/L, 3 g = 0.185 mg/L, 4 g = 0.11 mg/L, and 5 g = 0.07 mg/L. The conclusion of this study is that there is an effect of activated charcoal from snakehead fish bones on total iron levels in river water. Research can be continued on the variation of activated charcoal immersion method on total iron content. Keywords: Activated charcoal, snakehead fish bones, total iron content, river water