ISOLASI DAN KARAKTERISASI ASAM HUMAT DARI TANAH GAMBUT

atik rahmawati

doi:10.21580/phen.2011.1.2.440

ISOLASI DAN KARAKTERISASI ASAM HUMAT DARI TANAH GAMBUT

* - Fakultas Saintek UIN Walisongo, Indonesia

(*) Corresponding Author

DOI: 10.21580/phen.2011.1.2.440

Abstract
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Telah dilakukan penelitian tentang isolasi dan kara- kterisasi asam humat hasil isolasi tanah gambut yang be- rasal dari Desa Sambutan, Kecamatan Samarinda Ilir, Sa- marinda, Kalimantan Timur.
Isolasi asam humat dari tanah gambut menggunakan metode ekstraksi alkali, pemurnian dan penentuan kand- ungan gugus fungsional asam humat secara titrasi poten- siometri.
Hasil penelitian menunjukkan gugus fungsional utama asam humat hasil isolasi tanah gambut adalah gu- gus –COOH dan gugus –OH. Secara kuantitatif kandungan gugus fungsional tersebut masing-masing sebesar 426,2 cmol/kg (gugus –COOH), 289,6 cmol/kg (gugus –OH fenolat) dan 37,0 cmol/kg (gugus –OH alkoholat).

Keywords: Asam humat, Tanah Gambut, Isolasi, Karak- terisasi

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