Calcium hydroxyapatatite (CHAP) has been fabricated from waste material as an egg shell towards the applicability of glyphosate (GLY) removal from aqueous phase via biosorption method. However, regarding parameters, which have been obtained to influence adsorption capability to perform the optimization study by Box–Behnken design (BBD). The materials were characterized by BET surface, field-emission scanning electron microscope (FESEM) equipped with an energy-dispersive X-ray spectrometer (FESEM-EDX), Fourier transformed infrared spectroscopy (FT-IR study), zero-point charge (ZPC), X-ray patterns (XRD), etc. The highest optimization was recorded as 99.9532% adsorption, regarding adsorption dose of 0.05 g, GLY concentration of 49.99 mg/L and pH of 4.22, respectively. The adsorption kinetics study was demonstrated with pseudo-first order, pseudo-second order and intraparticle diffusion modelling, as compared to maximum fitted with pseudo-second order. The study of equilibrium was employed through Langmuir, Freudlich, Dubinin–Radushkevitch (D–R), Tempkin isotherms, leads maximum with Freundlich (K_F = 177.47 Lmg⁻¹) and Temkin to derive the mechanism as usually engaged chemisorption. The thermodynamic parameters revealed that ΔH^o (5E-13 kJ/mol) has positive showed with negative on ΔS^o (− 0.0572 kJ/mol) to conform endothermic reaction facilitated with spontaneous response. The regeneration study was examined by three types of eluting agents, the NaOH: NaCl medium is the best recommended in stage of six cycles with 80% efficiency. This adsorbent utility could be beneficial to GLY adsorption in sustainable ways.

羟基磷灰石钙（CHAP）由废料制成卵壳，适用于通过生物吸附法从水相中去除草甘膦（GLY）的适用性。但是，关于通过Box-Behnken设计（BBD）获得的影响吸附能力的参数进行优化研究。通过BET表面，配备能量色散X射线光谱仪（FESEM-EDX）的场发射扫描电子显微镜（FESEM），傅立叶变换红外光谱（FT-IR研究），零点电荷（ZPC）对材料进行了表征最高的优化记录为99.9532％的吸附，吸附剂量为0.05 g，GLY浓度为49.99 mg / L，pH值为4.22。吸附动力学研究用伪一级证明，伪二阶和粒子内扩散建模，与最大伪二阶拟合相比。通过Langmuir，Freudlich，Dubinin – Radushkevitch（D – R），Tempkin等温线进行平衡研究，Freundlich（K_F  = 177.47 Lmg ^-1）和Temkin推导该机理通常是化学吸附。的热力学参数表明，ΔH ^Ö（5E-13千焦/摩尔）具有正与负ΔS表明^Ö（ - 0.0572千焦/摩尔）与自发响应便利，以符合吸热反应。通过三种类型的洗脱剂对再生研究进行了检查，NaOH：NaCl培养基是六个循环阶段中效率80％的最佳推荐。该吸附剂实用性可能以可持续的方式有益于GLY吸附。