Insights into the removal of lithium and molybdenum from groundwater by adsorption onto activated carbon, bentonite, roasted date pits, and modified-roasted date pits
المؤلف | Ahmad A.Y. |
المؤلف | Al-Ghouti M.A. |
المؤلف | Khraisheh M. |
المؤلف | Zouari N. |
تاريخ الإتاحة | 2022-05-31T19:01:12Z |
تاريخ النشر | 2022 |
اسم المنشور | Bioresource Technology Reports |
المصدر | Scopus |
المعرّف | http://dx.doi.org/10.1016/j.biteb.2022.101045 |
الملخص | This study investigated the removal of lithium (Li) and molybdenum (Mo) from groundwater using activated carbon, bentonite, roasted date pits, and modified-roasted date pits as adsorbents under different experimental parameters including pH, initial concentration, and temperature. Various adsorption isotherm models were used to determine the best-fit model for the obtained experimental data. The negative values of Gibbs energy (ΔG°) indicated a spontaneous and favorable adsorption process of the adsorption at high temperatures. The positive entropy values (ΔS°) that controlled the adsorption process suggested the possibility of some structural changes or readjustments in the adsorbate–adsorbent complex. The adsorption efficiency of Li increases at 35 °C using the four adsorbents. At 35 °C, the maximum adsorption efficiency reached 95% for AC, 94% using MDPs, 63% using bentonite, and 38% using RDPs. The modified-roasted date pits showed the highest adsorption of Mo in all real groundwater samples. The adsorption of Mo increased with the increase in concentrations, and its maximum removal at 25 °C was 80%. |
اللغة | en |
الناشر | Elsevier Ltd |
الموضوع | Adsorption isotherm models Agricultural waste Groundwater Thermodynamics |
النوع | Article |
رقم المجلد | 18 |
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