Efektivitas Biosorben Ampas Tebu Teraktivasi Asam HCl untuk Menurunkan Kadar Zat Warna Limbah Cair Batik

Abstract

The textile industry is a key contributor to Gross Domestic Product (GDP), with significant advancements observed in the batik sector in terms of both quality and quantity. The coloring process in the growing batik industry involves the use of various dyes, including synthetic ones like remazol, rapid, and naphtol. However, synthetic batik dyes pose challenges due to their non-biodegradable nature. To address waste issues, a research study explores a biosorbent adsorption method utilizing sugarcane bagasse as a base material activated with HCl. The research focuses on creating HCl-activated biosorbent, determining color removal efficiency, and examining the impacts of contact time and biosorbent mass on removal efficiency. The process involves washing, drying, and sieving sugarcane bagasse to eliminate impurities. Activation is achieved using 1M HCl to expand the biosorbent's pore size. Results indicate that a biosorbent mass variation of 0.4 grams yields the highest removal efficiency, averaging 58.20% at 15 minutes, 60.98% at 30 minutes, 53.34% at 45 minutes, and 53.39% at 60 minutes. A contact time of 30 minutes demonstrates the highest removal efficiency, with percentages ranging from 37.19% to 60.98% across different mass variations. ANOVA analysis reveals the significant influence of biosorbent mass on removal efficiency (p-value of 4.7582x10-21), while contact time is not significant (p-value of 0.876). In conclusion, the study outlines a process involving cleaning, drying, cutting, and sieving sugarcane bagasse, followed by activation with 1M HCl and drying to obtain HCl-activated biosorbent. The optimal conditions for maximum removal efficiency are a mass variation of 0.4 grams and a contact time of 30 minutes, achieving a removal percentage of 60.98%.