Disposal and recycling of heavy metal-enriched biomass is the key to measure the success of phytoremediation. This study employed innovative approach to use (. ) for the treatment of Cd-contaminated L. (sunflower) stalk after phytoremediation. Single-factor results showed that the removal of Cd at an initial pH of 3 was superior to sucrose and inoculation amount. 67.67% of Cd was removed by leaching system after 11 days based on response surface methodology optimum conditions (sucrose: 76.266 g L; inoculation amount: 10%; initial pH: 3), while the concentrations of nitrogen, phosphorus and potassium (N, P and K) of sunflower stalk were unaffected. While physicochemical pretreatment effectively enhanced the bioleaching efficiency, it also resulted in significant loss of P and K elements, thereby reducing the value of biomass for recycling and utilization. Therefore, the direct leaching method without pretreatment is more advantageous for the safe treatment and recycling of Cd-contaminated sunflower stalks.

中文翻译：

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黑曲霉对受污染向日葵茎中镉的生物浸出及其副产物的安全利用

富含重金属的生物质的处置和回收是衡量植物修复成功与否的关键。本研究采用创新方法，使用 (. ) 来处理植物修复后受镉污染的向日葵（向日葵）茎。单因素结果表明，初始pH为3时Cd的去除效果优于蔗糖和接种量。根据响应面法最佳条件（蔗糖：76.266 g·L；接种量：10%；初始pH：3），浸出系统在11天后去除了67.67%的Cd，而氮、磷和钾的浓度（N，向日葵茎的P和K）不受影响。物化预处理在有效提高生物浸出效率的同时，也造成了P、K元素的大量损失，从而降低了生物质的回收利用价值。因此，不经预处理的直接浸出法更有利于镉污染葵花秆的安全处理和资源化。