Studi Pengaruh Intensitas Cahaya dan Kecepatan Pengadukan Untuk Degradasi Limbah Cair Tekstil Menggunakan Fotokatalis ZnO-Zeolit

Riski Alpina; Lety Trisnaliani; Didiek Hari Nugroho

Authors

Riski Alpina Politeknik Negeri Sriwijaya Author
Lety Trisnaliani Politeknik Negeri Sriwijaya Author
Didiek Hari Nugroho Politeknik Negeri Sriwijaya Author

Keywords:

Textile Waste, Photocatalyst, Battery Waste, ZnO-Zeolite, Degradation

Abstract

Photocatalysis is an environmentally friendly method for treating textile wastewater. Zinc oxide (ZnO), a potential photocatalyst, can be synthesized from Zn-C battery waste, and its performance can be enhanced by adding zeolite. This study aimed to evaluate the performance of ZnO–zeolite photocatalysts derived from Zn-C battery waste and to determine the effects of UV light intensity (576, 810, and 1324 lux) and stirring speed (200, 400, 600, and 800 rpm) on textile wastewater degradation efficiency. The ZnO–zeolite composite was synthesized using the coprecipitation method. Material characterization revealed a crystal size of 16.08 nm and a bandgap energy of 2.98 eV. The results showed that increasing UV light intensity and stirring speed up to an optimal point enhanced degradation efficiency. Under optimal conditions (1324 lux and 600 rpm), COD, TSS, and pH values of 56 mg/L, 44.55 mg/L, and 7.05, respectively, were achieved. Higher light intensity promoted the formation of hydroxyl radicals, while optimal stirring maximized contact between pollutants and the catalyst surface. Conversely, excessive stirring reduced efficiency due to turbulence that impeded the adsorption process.

Author Biographies

Riski Alpina, Politeknik Negeri Sriwijaya

D4 Teknologi Kimia Industri, Jurusan Teknik Kimia, Politeknik Negeri Sriwijaya
Lety Trisnaliani, Politeknik Negeri Sriwijaya

Dosen, Jurusan Teknik Kimia, Politeknik Negeri Sriwijaya
Didiek Hari Nugroho , Politeknik Negeri Sriwijaya

Dosen, Jurusan Teknik Kimia, Politeknik Negeri Sriwijaya

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