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Volume 25, Issue 2, 2024

Removal of Thallium (TI+3) from Simulated Wastewater by Raw Rice Husks: Isotherms and Kinetics

Zainab Abbas Gadooa, Mohammed Nsaif Abbas

> DOI: https://jeeng.net/issue/view/?id=100

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Thallium, Batch adsorption, Rice husk, Isotherm model, kinetics model



All feasible sources of affordable adsorbents should be investigated, as well as their practicality for the removal of heavy metals. As a result, this paper discusses the using inexpensive adsorbents made of agricultural waste, such as rice husk with a surface area of 17.5 m2/g with a maximum adsorption capacity of 2.099 mg/g for thallium via the adsorption process. The experimental data fitted to the Langmuir isotherm model and intra-particle diffusion model with (R2=0.9999). Thermodynamic studies show that the adsorption of thallium was exothermic. A Batch system has been used on thallium for studying the effect of pH, contact time, initial concentration, dose of adsorbents, and agitation speed and the results showed that optimum conditions to get the best removal percentage for thallium of 82.4083% were high pH value of 10, contact time 180min, dose of adsorbents 5g, C0 = 80mg/L, agitation speed 360 rpm. as a result of the research, rice husk can be effectively used as a low-cost option for metal ion removal.