Pemanfaatan AkarWangi (Chrysopogon zizanioides) sebagai Tanaman untuk Fitoremediasi Tanah Terkontaminasi Cesium-137 di Batan Indah Serpong
ALFIANSYAH MALIK NUGROHO, Ir. Susetyo Hario Putero, M.Eng.; Drs. Syarbaini, MSc.
2025 | Skripsi | TEKNIK NUKLIR
The management of metal-contaminated soil is carried out to support the sustainability of the soil ecosystem in an environment because metals in the soil do not undergo biodegeneration. The cesium-137 pollution that occurred in the Batan Indah housing complex in early 2020 became the background of research for the management of polluted soil. Management was carried out using phytoremediation which utilizes plants to absorb polluting substances. The research was conducted to determine the ability of vetiver (Chrysopogon zizanioides) to absorb cesium-137 and the effect of its growth.
The research was conducted by analyzing the absorption of cesium-137 and the growth of vetiver in a 25 cm diameter pot. Each pot contained 3 vetiver plants, and there were 19 pots with 9 different activities. Plant growth was observed for 10 weeks with an observation interval of 1 week. After the observation, the plant activity was measured for 3600 seconds using a High-purity germanium (HPGe) detector.
From the research that has been done, the results obtained the highest growth rate of 3 cm/day for pot H7-2 2nd plant (H7-2-2) and the highest crown activity concentration of 94.44 Bq / g for pot H5-2 and roots of 28.05 Bq / g for pot H2-1. From the results that have been shown vetiver growth and absorption of cesium-137 levels affect each other whereas if cesium-137 are absorbed the plant will slightly affect the growth rate of the plant. The ability of vetiver plants to reduce cesium-137 in the soil is moderate where the value of the bioaccumulation factor (BAF) obtained some passes more than 1. However, the value of the translocation factor is less than 1.
Kata Kunci : fitoremediasi, cesium-137, akar wangi, detektor HPGe