Pengaruh Variasi Konsentrasi NaOH Pada Proses Alkalisasi Terhadap Ektraksi dan Karakteristik Asam Humat Batubara Lignit

Kezia, Angelin (2026) Pengaruh Variasi Konsentrasi NaOH Pada Proses Alkalisasi Terhadap Ektraksi dan Karakteristik Asam Humat Batubara Lignit. Bachelor thesis, Institut Teknologi Kalimantan.

[img] Text
06221007_cover.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_statement_of_authenticity (1).pdf
Restricted to Repository staff only until 4 October 2028.
Download (562kB) | Request a copy
[img] Text
06221007_publishing_agreement (1).pdf
Restricted to Repository staff only until 4 October 2028.
Download (514kB) | Request a copy
[img] Text
06221007_approval_sheet.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_preface.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_abstract_id.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_abstract_en.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_table_of_content.pdf
Restricted to Repository staff only until 4 October 2028.
Download (2MB) | Request a copy
[img] Text
06221007_illustrations.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_tables.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_notations.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_chapter_1.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_chapter_2.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_chapter_3.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_chapter_4.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_conclusions.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_bibliography.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_enclosure.pdf
Restricted to Repository staff only until 4 October 2028.
Download (1MB) | Request a copy
[img] Text
06221007_paper.pdf
Restricted to Repository staff only until 4 October 2028.
Download (362kB) | Request a copy
[img] Text
06221007_Form.TA-020.pdf
Restricted to Repository staff only until 4 October 2028.
Download (653kB) | Request a copy
[img] Text
0621007_approval_sheet.pdf
Download (600kB)

Abstract

Batubara lignit merupakan batubara peringkat rendah yang memiliki kandungan substansi humat cukup tinggi sehingga berpotensi dimanfaatkan sebagai sumber asam humat bernilai tambah. Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi NaOH pada proses alkalisasi terhadap yield, gugus fungsional, dan karakteristik pori asam humat hasil ekstraksi batubara lignit. Proses ekstraksi dilakukan menggunakan larutan NaOH dengan variasi konsentrasi 0,55 M, 0,60 M, dan 0,70 M pada suhu 60°C selama 2 jam, kemudian dipresipitasi menggunakan HCl hingga pH 1–2. Karakterisasi dilakukan menggunakan FTIR dan BET/BJH. Hasil penelitian menunjukkan bahwa yield asam humat meningkat dari 8,14% pada konsentrasi NaOH 0,55 M menjadi 8,62% pada 0,60 M, kemudian menurun menjadi 6,08% pada 0,70 M. Analisis FTIR menunjukkan keberadaan gugus hidroksil (O–H), alifatik (C–H), aromatik (C=C), dan gugus beroksigen (C–O) yang merupakan karakteristik khas asam humat. Analisis BET/BJH pada sampel optimum (NaOH 0,60 M) menghasilkan luas permukaan pori sebesar 0,074 m²/g, volume pori sebesar 0,00135 cm³/g, dan radius pori sebesar 47,53 nm yang menunjukkan karakteristik material berpori. Berdasarkan hasil penelitian, konsentrasi NaOH 0,60 M merupakan kondisi optimum pada proses ekstraksi asam humat dari batubara lignit dengan yield tertinggi sebesar 8,62%.

Item Type: Thesis (Bachelor)
Subjects: Q Science > QD Chemistry
Divisions: Jurusan Ilmu Kebumian dan Lingkungan > Teknik Material dan Metalurgi
Depositing User: Angelin Maysel Kezia
Date Deposited: 16 Jul 2026 08:10
Last Modified: 16 Jul 2026 08:10
URI: http://repository.itk.ac.id/id/eprint/27489

Actions (login required)

View Item View Item