Citation :

Sumarni, Eni Sabela, Sukmawati, Adam Saputera, Rian Erlangga Saputera, Nila Choirunayli, Sri Lestari, "Optimization of Dye Waste Degradation Through Electrolysis with PbO2/Pb from Used Batteries," International Journal of Agriculture & Environmental Science, vol. 13, no. 3, pp. 1-7, 2026. Crossref, https://doi.org/10.14445/23942568/IJAES-V13I3P101

Abstract

Chemical laboratories have a risk of danger due to the use of chemicals, including liquid waste that can pollute the environment. Laboratory liquid waste contains hazardous organic and inorganic compounds. One of the laboratory liquid wastes is dye waste. Waste treatment is important to reduce the negative impacts and hazards to health and the environment. One effective method for degrading dye waste is Electrodecolorization, an electrochemical process for degrading dyes using electric current. This method is able to degrade dye waste without producing new waste. This study aims to determine the optimization of the degradation of dye waste from the laboratory by electrolysis using PbO2/Pb electrodes from used batteries. This study was conducted by electrolyzing dye waste with variations in working potential, variations in electrolysis time, and variations in electrode distance. The absorbance of dye waste before and after electrolysis was measured using a UV-Vis Spectrophotometer at a wavelength of 330 nm. The results showed that the optimization of dye waste degradation occurred at a working potential of 6 V, electrolysis time of 90 minutes, and electrode distance of 1 cm.

Keywords

Degradation, Dye Waste, Electrodecolorization, Used Batteries, Electrolysis.

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