EVALUASI TOKSISITAS LIMBAH BATIK TRADISIONAL DENGAN UJI TOKSISITAS AKUT DAN SUB AKUT

• Main Author: Mutiara Kami, Indah
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/37509
• Institution: Institut Teknologi Bandung

Along with the increasing demand for batik, traditional batik industry is growing. Until now, wastewater from the batik industry is still being a concern. Besides having to meet quality standards, there is also a toxicity test that can measure the damage that occurs in organisms when exposed to waste with a certain amount and concentration. This study measured acute and sub-acute toxicity of industrial wastewater of traditional batik using Daphnia magna and Chlorella sp as test organisms. This study used four types of samples. They were sample from wastewater tank during the morning (A), the rest of dyeing cloth with naphthol (B), the rest of dyeing cloth with salt (C), and sample from wastewater tanks during the afternoon (D). In the first sampling, sample A’s TUa value was 40, sample B’s TUa was 4,52, sample C’s TUa was 8,19, and sample D’s TUa was 32,2. While in the second sampling, TUa values of each sample were 19,23 (A), 17,54 (B), 13,16 (C), and 29,42 (D). IC50 values for toxicity testing of second sampling were 65,23% (A), 7,96% (B), 68,75% (C), and 63,92% (D). Based on the characteristics of the parameters measured in this study, the factors that affected the traditional batik effluent toxicity were pH, DO, BOD, COD, and TSS. However, the toxicity can also be caused by contaminants or other interaction among the contaminants that are not measured in this study. Based on the applicable standard, traditional batik industrial wastewater is toxic and requires treatment before discharge into water bodies.