KEBERADAAN ANILIN DI SUNGAI CITARUM HULU AKIBAT PENGGUNAAN AZO DYES PADA INDUSTRI TEKSTIL

Abstract

A bstract The dyeing and printing process es in textile industry produces wastewater containing residual dye s . The most widely used textile dyes are azo dyes. The textile industry is one of the main industr ies in West Java province, where one of the textile industry center s is Majalaya textile industry center. Majalaya textile industry center had beg u n since the 1910s, where in Majalaya subd istrict located the most textile companies which produc ed textile wastewater. Textile w astewater which contain ed azo dyes discharged into the Citarum Hulu River directly or after treatment in the Waste Water Treatment Plant (WWTP) owned by the company. One of the p roduct metabolites produced from azo dyes biodegradation by bacteria in anaerobic conditions are various anilines. Several aniline s which are persistent , c ould flow to downstream of Citarum Hulu River. Various anilines, referred to as total aniline s , c ould be analyzed by the colorimetric method using visual spectrophotometer. T otal aniline s in water sample s after biodegradation by anaerobic bacteria was 14.46 mg/l highest . While total aniline in river water samples was 3.58 mg/l highest. And at the downstream of Citarum Hulu River, there was total of aniline 1,825 mg/l highest in the river sediment samples . DO in the river water samples were 4.25 - 7.8 mg/l, while pH of the river water samples were 7.1 - 10.7. The occurence of total aniline in textile wastewater and river water samples in Citarum Hulu River ( Majalaya subdistrict) and in river sediments at the downstream of Citarum Hulu indicated biodegradation of azo dyes from textile wastewater by anaerobic bacteria. Key words : Citarum Hulu River, textile wastewater, azo dyes, total aniline