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Removal of Cd(II) Ions from Aqueous Solutions using adsorption By Bentonite Clay and Study the Adsorption Thermodynamics | ||
| Pollution | ||
| دوره 9، شماره 3، مهر 2023، صفحه 994-1005 اصل مقاله (843.06 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2023.353137.1741 | ||
| نویسندگان | ||
| Ahmed Yosif Hamood1؛ Inas K Mohammed1؛ Ahmed Abdalhadi Majeed* 2، 3 | ||
| 1Department of Marine Environmental Chemistry, Marine Science Center, University of Basrah, Basrah, Iraq | ||
| 2Scientific Research Center, Al-Ayen University, Thi-Qar, Iraq | ||
| 3Education Directorate of Thi-Qar, Ministry of Education Iraq | ||
| چکیده | ||
| cadmium usually enter the environment and water resources through wastewater, released by various industries, and may have adverse effects. The current study employs surface of bentonite clay available locally in order to remove cadmium In solutions contaminated with this type of ions, in order to research on a surface with a high ability to adsorption of cadmium (II) ions, study Some factors affect the adsorption process on bentonite clay, such as contact time, pH the solution, Adsorbent particle size, Initial concentration of solutions and temperature of the solution were examined in the a batch process mode. The amount of adsorbed Cd (II) increased with height temperature, the optimum adsorption pH was about 6.5. Under this condition, the percent removal was 95.17%. The adsorption isotherms were studied and the results of adsorption processes were more fitted with Friendlich model rather than Langmuir adsorption model. Thermodynamic study showed that, ΔH was endothermic, ΔG is found to be negative That is, the process is automatic and ΔS was found to be positive. The current study also involves practical application using bentonite to get rid of Cd(II) ions to from wastewater of Hamdan's station of the Basra- iraq, The results indicate high affinity (97.84%) removal of Cd(II) ions. | ||
| کلیدواژهها | ||
| Adsorption؛ bentonite؛ Cd(II) ions, Langmuir and Freundlich models؛ Thermodynamic | ||
| مراجع | ||
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