STUDI STABILITAS SISTEM SUB SURFACE FLOW CONSTRUCTED WETLAND (SSF-CW) MENGGUNAKAN TANAMAN MELATI AIR DAN MEDIA TANAM ZEOLIT DALAM MENURUNKAN LOGAM Hg

Angge Dhevi Warisaura, Ilma Fadlilah, Agus Prasetya, Moh. Fahrurrozi

Abstract


Amalgamation to gold in artisanal small scale generally uses mercury (Hg) that decrease the quality of environment especially water. A study of mercury artisanal small scale gold mine waste water was conducted by utilizing simple technology using Sub Surface Flow - Constructed Wetland (SSF-CW) system.   This system is a combination of phytoremediation methods using Echinodorus palaefolius plant with zeolite as growth media. The purpose of this study was to determine the stability of SSF-CW in reducing Hg concentration in water. This SSF-CW system model has dimensions of 820 mm x 320 mm x 585 mm consisting of 3 zones, namely the inlet zone, the reaction zone and the outlet zone. The study was conducted with an initial HgCl2 waste concentration of 14.94 mg / L which was carried out in two stages, continuous and batch for 12 hours and lasted for 3 days for each stage. Effluent samples were taken every 0 hours, 4 hours, 8 hours, and 12 hours for mercury concentration analysis using Direct Mercury Analyzer (DMA). The result showed that SSF-CW could support the process of reducing Hg concentration n wastewater with removal efficiency of 98.99%. Echinodorus had the ability to accumulate metals with a BCF value of 9,117.  and the accumulation of Hg in the zeolite (as growth media) was still far from the saturated capacity to absorb mercury


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DOI: https://doi.org/10.35970/jppl.v1i01.41

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