Abstract
The results of the water quality monitoring by Perum Jasa Tirta II mentioned that water from the Cisanti outlet (upstream of the Citarum River) contained heavy metals that exceed the quality standard threshold. This study aimed to determine the effectiveness of heavy metal absorption with various absorbents, such as quartz sand, andisol soil, zeolite, and activated carbon in the Citarum River, West Java. The method that used in this work was refining silica and synthesized various combinations of quartz sand, andisol soil, zeolite, and activated carbon. The results showed that the composition of quartz sand/andisol soil/zeolite/activated carbon by 20/20/20/40 gave the best performance in the absorption. The studies of Fe, Mn, BOD, and COD revealed that the adsorption-treated water had met the parameters of PERMENKES RI number 32 of 2017. The variations of adsorbent composition did not affect the absorption of Mn and Fe metals content from water taken from the location before the dam and Citarum River 2, as indicated by statistical analysis. Although, for other locations, the variations of adsorbent composition impacted the reduction of Mn, Fe, BOD, and COD contents.
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