Toxins released into water streams from several industrial effluents have a negative impact on the ecosystem. High level of heavy metals (Zn, Pb, Hg, Ni, Cu, and Fe) in wastewaters lead to a number of health risks, including immune system dysfunction, gastrointestinal issues, birth defects, and neurological diseases. This study is centred on utilizing Meleagris gallopavo domesticus Egg Shells (MES) as a precursor to chelate Ni(II), Pb(II) and Zn(II) ions from aqueous media after acid / base treatment. Metal sequestering ability of the Treated MES powder (TMES) was studied via pilot method. Batch Equilibration verification was carried out to optimize the influential parameters and extended to effluent collected from oil industry. Microscopic analysis, BET / BJH, FT-IR, SEM / EDAX, TG–DTA analysis were conducted to characterize the physical and chemical nature of the material. Initial and residual metal concentrations of metal solutions were determined using Atomic Absorption Spectrophotometer (Shimadzu (AA 6200). TMES had confiscated 82.4% Ni(II), 84.5% Pb(II) and 90% Zn(II) under lab conditions, whereas 80% Ni(II), 81.5% Pb(II) and 87.3% Zn(II) for field samples. Based on the Batch results, isothermal, kinetic studies and thermodynamic factors were derived for AMES – aqueous metal solutions. Upon derived isothermal plots, most linear fit of Langmuir isotherm favored monolayer sorption. Kinetic studies revealed the applicability of pseudo-second order model. Occurrence of multi-stage processes were envisaged from Intraparticle diffusion plot. Thermodynamic factors registered spontaneity, exothermicity and high disorderliness for the systems. From the made observations, it is concluded that TMES possess excellent heavy metal scavenging nature, both from hydrous solutions and effluents.
