SERAPAN SIANIDA (CN) PADA Mikania cordata (Burm.f) B.L. Robinson, Centrosema pubescens Bth DAN Leersia hexandra Swartz YANG DITANAM PADA MEDIA LIMBAH TAILING TERKONTAMINASI CN

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Fauzia Syarif


Some plant species growing in the contaminated areas, indicated high tolerance
and potentially affective in accumulating pollutants in their roots and above ground
portions. These plants can be utilized as hyperaccumulators for cleaning up the
contaminated sites. Study on heavy metal and CN contamination and potential
plant species for accumulator is urgently needed in order to understand the problems
and to obtain suitable technology for the solution. This research aims to examine
CN accumulator plants growing in CN contaminated tailing to find a possible solution
of cleaning up by using green technology of phytoremediation. Phytoremediation is
defined as clean up of pollutants primarily mediated by photosynthetic plants. This
study aims to characterized plants that grow under extreme contaminated media of
gold mined tailing and to analyse their potencies as hyperaccumulators. Mikania
cordata (Burm.f) B.L.Robinson,Centrosema pubescens Bth and Leersia hexandra
Swartz which proven tolerant and dominant in the contaminated site were examined
in this research. The plants were grown in tailing waste media added by 0 ppm CN,
2.5 ppm CN, 5 ppm CN dan 7.5 ppm CN using complete randomized design with 5
replicates. The results showed that the plants were capable of growing under the
highest level of CN. Among three species, Mikania cordata showed the highest
biomass production followed by Centrosema pubescens and Leersia hexandra. Total
CN accumulation varied between species, the highest was reached in 2.5 ppm CN
treatment i.e. 22.48 mg/kg in Leersia hexandra, followed by Centrosema pubescens
(18.92 mg/kg) and Mikania cordata (12.03 mg/kg). The highest CN content was
0.085 mg in Mikania cordata treated with 7.5 ppm CN. High ratio of shoot to root CN
(>1) was expected in hyperaccumulator plants to indicate that CN was more distributed
in the above ground portions than in the roots. In this study the highest shoo to root
CN ratio was showed in Mikania cordata i.e.11.75

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Author Biography

Fauzia Syarif, Lembaga Ilmu Pengetahuan Indonesia

Peneliti di Bidang Botani, Pusat Penelitian Biologi