Carbon Dots Synthesized from Tofu Pulp for Liquid Tofu Waste Photo-degradation

Authors

  • Yosi Nurohman Universitas Negeri Yogyakarta
  • Elisabeth Pratidhina Universitas Negeri Yogyakarta
  • Emi Kurnia Sari Universitas Negeri Yogyakarta
  • Wipsar Sunu Brams Dwandaru Universitas Negeri Yogyakarta http://orcid.org/0000-0002-9692-4640

DOI:

https://doi.org/10.12928/irip.v4i1.3327

Keywords:

Carbon Dots, Liquid Tofu Wastes, Photo-degradation, Tofu Pulp, UV Light

Abstract

This study was aimed to prepare and characterize carbon dots (CDs) from tofu pulp for liquid tofu wastes photo-degradation. The tofu pulp was dried, heated in an oven for an hour at 250 oC, mashed into powder, weighted as much as (g) 1; 2; 3; 4; and 5, dissolved into 100 ml distilled water, filtered, and characterized using UV-Vis, PL, and FTIR. The photo-degradation experiment was conducted for pure waste, waste + CDs, and waste + CDs + UV light, then the BODs were measured. The CDs reduced the wastes to 14.29% and 53.90% without and with UV light, respectively. The pure wastes, wastes + CDs, and wastes + CDs + UV light produced BOD values of (mg/l) 385; 200; and 135, respectively. The decrease in BOD showed that CDs with and without UV light successfully restore dissolved oxygen in the wastes.

Author Biographies

Yosi Nurohman, Universitas Negeri Yogyakarta

Department of Physics Education, Faculty of Mathematics and Natural Sciences

Elisabeth Pratidhina, Universitas Negeri Yogyakarta

Department of Physics Education, Faculty of Mathematics and Natural Sciences

Emi Kurnia Sari, Universitas Negeri Yogyakarta

Department of Physics Education, Faculty of Mathematics and Natural Sciences

Wipsar Sunu Brams Dwandaru, Universitas Negeri Yogyakarta

Department of Physics Education, Faculty of Mathematics and Natural Sciences

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Published

2021-08-27

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