adhitama, anang mei (2026) Sintesis Natrium Lignosulfonat Berbasis Lignin Dari Limbah Serbuk Gergaji Kayu Jati Dengan Metode Sulfonasi Tidak Langung. Undergraduate thesis, Universitas Pembangunan Nasional "Veteran" Jawa Timur.
![[img]](https://repository.upnjatim.ac.id/style/images/fileicons/text.png) |
Text (Cover)
22031010042.-cover.pdf Download (760kB) |
|
Text (Bab 1)
22031010042.-bab 1.pdf Download (115kB) |
|
Text (Bab 2)
22031010042.-bab 2.pdf Restricted to Repository staff only until 22 July 2029. Download (180kB) |
|
Text (Bab 3)
22031010042.-bab 3.pdf Restricted to Repository staff only until 22 July 2029. Download (410kB) |
|
Text (Bab 4)
22031010042.-bab 4.pdf Restricted to Repository staff only until 22 July 2029. Download (385kB) |
|
Text (bab 5)
22031010042.-bab 5.pdf Download (108kB) |
|
Text (Daftar pustaka)
22031010042.-daftarpustaka.pdf Download (135kB) |
|
Text (Lampiran)
22031010042.-lampiran.pdf Restricted to Repository staff only Download (631kB) |
Abstract
This study focuses on the synthesis of Sodium Lignosulfonate (NLS) from teak wood sawdust lignin through an indirect sulfonation method, investigating the optimization of pH and sulfonation time. The research successfully identified sulfonate groups via FTIR, confirming the formation of NLS. Optimal conditions were determined to be at pH 10 and a reaction time of 1.5 hours, yielding a maximum purity of 40.57%. The obtained product was characterized using Fourier Transform Infrared (FTIR) spectroscopy to identify functional groups and Ultraviolet-Visible (UV-Vis) spectroscopy to evaluate absorbance behavior. The FTIR results indicated the presence of sulfonate groups (-SO₂), confirming the successful formation of sodium lignosulfonate. Meanwhile, UV-Vis analysis showed variations in absorbance corresponding to changes in pH and sulfonation time, indicating differences in the degree of sulfonation. The results were compared with previous studies and showed consistent characteristics of sodium lignosulfonate. This study demonstrates that pH and sulfonation time significantly influence the properties of the synthesized product
| Item Type: | Thesis (Undergraduate) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Contributors: |
|
||||||||
| Subjects: | T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155 Chemical engineering |
||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | ANANG MEI ADHITAMA | ||||||||
| Date Deposited: | 23 Jul 2026 08:44 | ||||||||
| Last Modified: | 24 Jul 2026 02:45 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/57859 |
Actions (login required)
 |
View Item |