Skripsi

SINTESIS KOMPOSIT SIO2 DARI SEKAM PADI DENGAN POLIVINIL ALKOHOL UNTUK ADSORPSI ZAT WARNA CONGO RED

---

Penilaian

---

Rice husk is an agricultural waste abundant in silica (SiO₂). SiO2 extracted from rice husk has a porous structure, so it has the potential to be used as an adsorbent material. To increase the stability and effectiveness of the adsorption process, silica was modified by adding Polyvinyl Alcohol (PVA) and used to removal Congo red dye. SiO₂ extraction was carried out through a calcination process at three different temperatures, namely 600, 700, and 800 °C. Morphological analysis and elemental composition using SEM-EDX showed the presence of a polymer layer on the surface of the material, which functions as a distribution medium for SiO₂ particles. In addition, an increase in carbon (C) content was detected after the addition of PVA, confirming the presence of PVA in the composite. The optimum conditions for the adsorption process of Congo red dye by SiO₂-PVA were obtained at pH 1, contact time 75 minutes, and solution concentration 75 mg/L. Experimental data showed that the Langmuir isotherm model was most suitable for describing adsorption behavior compared to the Freundlich model, with an adsorption capacity of 14.31 mg/g. These results indicate that SiO₂-PVA has the potential as an alternative adsorbent for the treatment of waste containing dyes. Keywords: rice husk, SiO2, adsorption, Congo red dye, isotherm

---

Availability

Inventory Code	Barcode	Call Number	Location	Status
2507003559	T176169	T1761692025	Central Library (Reference)	Available but not for loan - Not for Loan

Detail Information

Series Title

-

Call Number

T1761692025

Publisher

Indralaya : Prodi Magister Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2025

Collation

xv, 108 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

-

Classification

540.07

Content Type

Text

Media Type

-

Carrier Type

-

Edition

-

Subject(s)

Kimia

Specific Detail Info

-

Statement of Responsibility

MI

Other version/related

File Attachment

Comments

---

You must be logged in to post a comment