ACADSTAFF UGM
| Title | : | Recoverable Adsorbent of Natural Zeolite/Fe3O4 for Removal of Pb(II) in Water |
| Author | : |
Prof. Dr. Endang Tri Wahyuni, M.S. (2) Prof. Drs. Mudasir, M.Eng., Ph.D. (3) |
| Date | : | 5 2020 |
| Keyword | : | Pb(II) ion,Adsorption,Natural Zeolite,Magnetization Pb(II) ion,Adsorption,Natural Zeolite,Magnetization |
| Abstract | : | A recoverable adsorbent of magnetized natural zeolite (zeolite-Fe3O4) has been prepared by two different techniques, named as co-precipitation and impregnation. The characters and the performance of the zeolite-Fe3O4 adsorbents prepared by the two of different techniques were compared. The performance of the adsorbents was evaluated for Pb(II) removal. In addition, the influence of the Fe3O4 fraction (25.0% w/w, 33.3% w/w, 50.0% w/w) on the adsorption capacity and recoverability was also studied. The adsorptions of Pb(II) was proceeded by batch experiment, where the operating parameters, including adsorbent mass, pH, and time were optimized. The adsorption kinetic and isotherm were also determined. The research results assign that zeolite-Fe3O4 prepared by co-precipitation has larger surface area, better Fe3O4 dispersion, higher recoverability, and considerably same adsorption capacity compared to that of by impregnation technique. Further, increasing Fe3O4 fraction can raise the recoverability, but leads to a decrease in the adsorption capacity. The 33.3%w/w fraction of Fe3O4 in the adsorbents give compromisingly good adsorption capacity and recoverability. The maximum of Pb(II) adsorption (95.15%) from 1 L solution with Pb(II) concentration of 150 mg L-1 is reached by using 1.25 g of the adsorbent mass, pH 3, and contact time 90 min. The adsorption kinetic best fits to pseudo second order with adsorption rate = 3.752 g mg?1 min?1. The corresponding adsorption is well described by Langmuir isotherm model with adsorption capacity = 55.249 mg g?1. The adsorption energy is found to be 31.548 kJ mol-1 suggesting that the adsorption follows the chemisorption phenomena. |
| Group of Knowledge | : | Kimia |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
Published
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