Paper Title
Effect of Chemical Fertilizer on Arsenic Using Phytotechnologyin Tailing Storage Facility from Gold Mining

This research studied the effect ofchemical fertilizer on Arsenic (As)by growing monocot species, which were V. nemoralis and B. bambos, and dicot species, which were A. mangium and L. leucocephala, in the Tailing Storage Facility (TSF)from gold mining and investigated the uptake and accumulation of As in different parts of plants, namelyaboveground parts (shoots, leaves) and underground parts (root) of monocot species and the root, stem, and leaf of dicot species. The experiment sets were planted in the experimental plot or in the TSF(In-situ) and in the nursery (Ex-situ) at 1-180 days.The samples were collected every 30 days. The results of the study on the amount of As accumulation in the TSF indicated that the accumulation was likely to decrease when the experiment time increased in both In-situ and Ex-situ sets. The amount of As, uptake of the plantsat 180 days showed that V. nemoralisand A.mangiumin the Ex-situ set absorbed more As than those in the In-situ set. V. nemoralisabsorbed and accumulated As in the underground parts the most, at 7.07 mg/kg.A.mangiumabsorbed and accumulated As in the leaf at 5.64 mg/kg. Therefore, A.mangium(dicot species) and V. nemoralis(monocot species) had high potential to absorb toxins or increase the amount of heavy metals. Note that, both plants were native plants that grew and adjusted to the environment of the studied area very well. The findings could be applied to finding solutions for As contaminated soil problems in other areas. Keywords - Chemical fertilizers, Phytoremediation, Arsenic, Tailing Storage Facility, Gold mining