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All Journal JURNAL KIMIA SAINS DAN APLIKASI
Rifana Adilla Safitri
Department of Chemistry, Faculty of Science and Technology, Universitas Islam Negeri Sunan Kalijaga Yogyakarta
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering

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Characterization and Application of Chitosan as a Natural Coagulant in Reducing Remazol Red Dyestuff Concentration and COD Value of Batik Liquid Waste Rifana Adilla Safitri; Maya Rahmayanti
Jurnal Kimia Sains dan Aplikasi Vol 23, No 9 (2020): Volume 23 Issue 9 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (26.79 KB) | DOI: 10.14710/jksa.23.9.333-337

Abstract

Research on chitosan application as a natural coagulant in reducing the concentration of remazol red dye from batik liquid waste has been carried out. This study aims to study the effect of the acidity of batik wastewater on the coagulant ability to reduce the remazol red dye concentration and the COD value of batik liquid waste. In this study, chitosan compounds before and after coagulation were characterized using Fourier Transform Infrared (FTIR) Spectroscopy. The pH range used in the coagulation process was pH 2-6. Post-coagulation chitosan FTIR spectra showed a shift in the wave number in the 3400 cm-1 area, which indicated an interaction between the -OH group of chitosan and the dye remazol red. Remazol red dye was maximally coagulated by chitosan at pH 2. The percentage reduction in the dye concentration reached 100%, and the decrease in COD value at that pH was 71.69%.
Co-Authors Maya Rahmayanti