Cahyani, Fatikhah (2026) Removal Ion Pb2+ dari Larutan Pb(NO3)2 Menggunakan Geopolimer Berbasis Abu Sekam Padi dan Metakaolin. Undergraduate thesis, UPN Veteran Jawa Timur.
![[img]](https://repository.upnjatim.ac.id/style/images/fileicons/text.png) |
Text (Cover)
21031010029-cover.pdf Download (843kB) |
|
Text (Bab 1)
21031010029-bab1.pdf Download (212kB) |
|
Text (Bab 2)
21031010029-bab2.pdf Restricted to Repository staff only until 27 August 2029. Download (437kB) |
|
Text (Bab 3)
21031010029-bab3.pdf Restricted to Repository staff only until 27 August 2029. Download (230kB) |
|
Text (Bab 4)
21031010029-bab4.pdf Restricted to Repository staff only until 27 August 2029. Download (379kB) |
|
Text (Bab 5)
21031010029-bab5.pdf Download (209kB) |
|
Text (Daftar pustaka)
21031010029-daftarpustaka.pdf Download (239kB) |
|
Text (Lampiran)
21031010029-lampiran.pdf Restricted to Repository staff only Download (969kB) |
Abstract
Heavy metal contamination in aquatic environments is a serious environmental issue due to its toxicity, persistence, and tendency to accumulate in organisms. One promising approach to address this problem is adsorption using aluminosilicate-based geopolymers. This study aimed to evaluate the ability of rice husk ash and metakaolin-based geopolymers to remove Pb²⁺ ions and to investigate the effects of Si/Al molar ratio and NaOH concentration on removal efficiency and adsorption capacity, and identify the adsorption mechanism of Pb²⁺ ions. Geopolymers were synthesized using rice husk ash as a silica source and metakaolin as an alumina source with varying Si/Al molar ratios and NaOH concentrations. The synthesized geopolymers were characterized using SEM-EDX and FTIR, while their adsorption performance was evaluated based on Pb²⁺ removal efficiency and adsorption capacity. The results demonstrated that the geopolymer was successfully synthesized and showed potential as an effective adsorbent for Pb²⁺ removal. SEM-EDX and FTIR analyses confirmed the formation of an aluminosilicate structure and indicated that Pb²⁺ adsorption involved ion-exchange mechanisms and interactions with active functional groups on the geopolymer surface. Variations in the Si/Al molar ratio and NaOH concentration affected the removal efficiency and adsorption capacity of the geopolymer. The optimum adsorption condition was achieved at a Si/Al molar ratio of 4.2 and a NaOH concentration of 10 M, resulting in an adsorption capacity of 7.94 mg/g and a removal efficiency of 99.83%. Keywords: geopolymer, rice husk ash, metakaolin, adsorption, Pb²⁺.
| Item Type: | Thesis (Undergraduate) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Contributors: |
|
||||||||
| Subjects: | T Technology > T Technology (General) T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155 Chemical engineering |
||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | Fatikhah Cahyani | ||||||||
| Date Deposited: | 01 Sep 2026 02:48 | ||||||||
| Last Modified: | 01 Sep 2026 03:30 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/59074 |
Actions (login required)
 |
View Item |