Pemanfaatan Ampas Tebu, Serabut Kelapa, dan Pac Sebagai Koagulan Untuk Menurunkan Tss Pada Limbah Cair Industri Batik

Abstract

Batik industrial waste water contains high levels of Total Suspended Solids (TSS) so it has the potential to reduce the quality of water if disposed of without adequate treatment. This study aims to analyze the effect of variations in the natural coagulant composition of bagasse and coconut fiber as well as the settling time on the reduction of TSS in batik liquid waste. The study used a coagulation-flocculation method with variations in the composition of bagasse: coconut fibers of 100:0, 80:20, and 60:40 and settling times of 0, 60, 90, and 120 minutes with two replications. The characterization of the coagulant included the moisture content and lignocellulose content, while the parameters analyzed included TSS, pH, dispensation efficiency, and coagulation kinetics. The characterization results showed that the moisture content of bagasse was 0.063% and coconut fiber was 0.101% which met SNI 06-3730-1995. Bagasse has a higher cellulose content (41.243%), while coconut fiber has a higher lignin content (44.980%). The addition of coagulants was able to lower TSS better than controls, with a composition of 100:0 and a settling time of 120 minutes resulting in the lowest final TSS of 33.9 mg/L and 29.1 mg/L and the highest dispensing efficiency of 71–73%. The pH value of the entire treatment was in the range of 11.3–12.0 and did not experience significant changes. Kinetic analysis showed that the coagulation process was more suitable for following the Pseudo First Order (PFO) model with a higher R² value than the Pseudo Second Order (PSO). This study shows that bagasse has the potential to be used as an effective biocoagulant to reduce the TSS level of batik liquid waste. Composition of bagasse: 100:0 coconut fiber with a settling time of 120 minutes is the optimal condition in the coagulation-flocculation process based on TSS parameters, dispensing efficiency, and process kinetics.