Phytoremediation study of Cu-contaminated soil using soybean (Glycine Max (L) Merril) with compost addition was conducted. This study was aimed to determine the Cu concentration in soil and soybean plant, to examine the feasibility of soybean plant (Glycine Max (L) Merril) as a hyperaccumulator plant for Cu metals with compost addition. Analysis methods used in this study included voltammetry, translocation factor, and enrichment factor. Study results indicated that Cu concentration in soil and plant was 87.363 mg/g and 68.509 mg/g, respectively. Soybean plant (Glycine Max (L) Merril) was classified as Cu hyperaccumulator with EF value > 1 and total accumulated Cu for control and compost treatment group was 80.444 mg/g and 63.234 mg/g, respectively. The addition of compost was capable of inhibiting the heavy metal Cu rate in the soil.
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