Soil pollution (heavy metals and organic matter) is becoming more and more serious, phytoremediation has rapidly become a highly important method to deal with this problem. Therefore, the treatment and disposal of hyperaccumulators have been a topic of concern. In this paper, carambola leaves are selected as feedstock considering that carambola is a potential hyperaccumulator. A series of tests were performed to discuss 6 main influencing factors on total gas yield and metal fixing using a non-thermal arc plasma setup, to investigate the feasibility of plasma treatment of hyperaccumulator and provide a new method to utilize the harvested hyperaccumulator. The maximum total gas yield reached approximately 85% at an airflow rate of 3 L/min, the processing time of 7 min, discharge power of 29.95 W with the addition of water (water: sample = 1:1). A reducing or inert carrier gas or the addition of some specific inorganic additives at optimal conditions were in favor of increasing metal fixing efficiency. However, the effects of these factors usually have two sides, and some factors may have conflicting effects between gas yield and metal fixing, and. It is necessary to optimize these factors for achieving the desired goal. The obtained solid products exhibit the potential to fix metals and act as activated carbon.

土壤污染（重金属和有机物）变得越来越严重，植物修复已迅速成为解决这一问题的重要方法。因此，超蓄积物的处理和处置已成为关注的话题。在本文中，考虑到杨桃是潜在的超蓄积性，选择了杨桃叶作为原料。进行了一系列测试，讨论了使用非热电弧等离子体装置对总气体产率和金属固着性的6个主要影响因素，以研究对超蓄能器进行等离子体处理的可行性，并提供了一种利用收获的超蓄能器的新方法。在加水的情况下（水：样品= 1：1），在3 L / min的空气流速，7 min的处理时间，29.95 W的放电功率下，最大总气体产率达到了约85％。在最佳条件下还原或惰性载气或添加某些特定的无机添加剂有利于提高金属固定效率。但是，这些因素的影响通常有两个方面，有些因素可能在气体产量和金属固着之间具有冲突的影响。有必要优化这些因素以实现期望的目标。所获得的固体产物具有固定金属和充当活性炭的潜力。