The present research focused on evaluating the role of waste fishbone hydroxyapatite (FB-HAP) in stabilizing heavy metals, particularly Pb and Zn, in incineration fly ash (IFA). Bones were collected from various fish species and processed for batch experiments. A commercial apatite product (Apatite II™) was also obtained for a comparative analysis. The experiments were performed at fishbone/fly ash ratios of 0.0 (control group) and 1:10 (by weight), settling times of 6, 12, 24, and 672 h (28 days), and W/S ratios of 1.0 and 1.5 mL/g. The highest Pb removal efficiency reached 86.39% at 28 days settling periods, when the FB-HAP dose was only 10% at W/S 1.5 mL/g. FB-HAP was found noticeably more effective (approximately 1.5 to 2 times) than Apatite II™, particularly at shorter settling periods. Stabilization of Zn was efficient at longer settling period (28 days) using FB-HAP. The highest stabilization rate of Zn was 62.67% at W/S 1.0 mL/g. The results indicated that settling time and W/S ratio were the most important factors to enhance the stabilization of Pb and Zn in IFA. Utilization of waste fishbone is expected to be a low-cost and eco-friendly technology.

本研究的重点是评估废鱼骨羟基磷灰石（FB-HAP）在稳定焚烧飞灰（IFA）中的重金属（尤其是铅和锌）中的作用。从各种鱼类中收集骨头，并进行批处理实验。还获得了商业磷灰石产品（Apatite II™）用于比较分析。实验是在鱼骨/粉煤灰比为0.0（对照组）和1:10（以重量计），沉降时间为6、12、24和672 h（28天），W / S比为1.0和10的条件下进行的。 1.5 mL /克。在28天的沉降期中，当W / S为1.5 mL / g时FB-HAP剂量仅为10％时，最高的Pb去除效率达到86.39％。发现FB-HAP比Apatite II™明显更有效（约1.5至2倍），特别是在更短的沉降时间内。使用FB-HAP在更长的沉降期（28天）内锌的稳定化是有效的。锌的最高稳定率在W / S 1.0 mL / g时为62.67％。结果表明，稳定时间和W / S比是增强IFA中Pb和Zn稳定性的最重要因素。废鱼骨的利用有望成为一种低成本且环保的技术。