REDUCING AMMONIA AND CHROMIUM CONCENTRATION IN BATIK WASTEWATER BY VETIVER (CHRYSOPOGON ZIZANIOIDES L.) GROWN IN FLOATING WETLAND

Waste of batik industry that is not well processed potentially contaminate the aquatic environment. Liquid waste concentration of 0%, 50%, 75%, and 100% was applied to vetiver (Chrysopogon zizanioides L.) grown in floating wetland system for treatment of batik industry liquid waste. Research was conducted in Akademi Kimia Analis (AKA) Bogor, Indonesia. This study aimed to determine the ability of vetiver for reducing the concentration of NH3 and NH4+, TAN, BOD, COD, and total chromium. 50% of batik waste water was revealed to be the most suitable concentration treated by vetiver in floating wetland, since it could reduce not only ammonia, confirmed by biplot analysis, but also 40.29% total chromium concentration.