The current investigation signified to produce hydroxyapatite (HA) from eggshell via self-combustion route to uptake disperse dyes, Blue 60, Red 152, and Yellow 23, from the industrial single, and multi-contaminated systems. The fabrication process involved subjecting the calcined eggshell powder to nitric acid, and urea solutions followed by heating at 90 °C to form a gel for auto-ignition stage. The self-combustion favors to create the meso-porous HA particles with average diameter of 35 nm, leading to achieve a superior adsorption capacity, 520–950 mg g⁻¹, for the removal of disperse dyes from the multi-contaminated system. The lowest adsorption capacity, 520 mg g⁻¹, was determined for the treatment of concentrated wastewater, containing 66.6% blue dye, and the same proportions of red, and yellow dyes, 16.7%. Although the chemical structure of disperse dye could affect the remediation, the adsorption capacity follows the order of blue > red > yellow. The adsorbent performance in the treatment of multi-contaminated systems did not coincide well with the adsorption affinity order. The calcination of fragile powder at 700 °C led to create pronounced hydrogen bonds which are beneficial to treat the mentioned wastewater. The excellent thermal stability of fabricated adsorbent provided a condition for the regeneration of contaminated HA which is a promising strategy to reuse in the recovery process, and prevent the generation of secondary pollution.

目前的研究意味着通过自燃路线从蛋壳中生产羟基磷灰石 (HA)，以从工业单污染和多污染系统中吸收分散染料蓝色 60、红色 152 和黄色 23。制造过程包括将煅烧过的蛋壳粉置于硝酸和尿素溶液中，然后在 90°C 下加热以形成用于自燃阶段的凝胶。自燃有利于产生平均直径为 35 nm 的中孔 HA 颗粒，从而实现卓越的吸附能力，520-950 mg g ^-1，用于从多污染系统中去除分散染料。最低吸附容量，520 mg g ^-1, 被确定用于处理浓缩废水，含有 66.6% 的蓝色染料，以及相同比例的红色和黄色染料，16.7%。虽然分散染料的化学结构会影响修复，但吸附能力遵循蓝色>红色>黄色的顺序。多污染系统处理中的吸附剂性能与吸附亲和顺序不一致。易碎粉末在 700 °C 下的煅烧导致产生明显的氢键，这有利于处理上述废水。制备的吸附剂优异的热稳定性为受污染的 HA 的再生提供了条件，这是一种很有前景的策略，可以在回收过程中重复使用，并防止产生二次污染。