Using Thiophene Supported on SiO2 for Removal Cr(VI) from Water Receptor
2016
Jodeh, S. | Naem, Ahmad | Abu Obaid, A. | Salghi, R. | Lgaz, H. | Jodeh, D. | Radi, S. | Tighadouini, S.
Water pollution is a major environmental problem especially that produced from different industries, which produce large amounts of toxic heavy metals to the soil and wastewater; these heavy metals affect human health. This study was made to study the removal of one of these toxic heavy metals which is Cr(VI) by adsorption technique using silica gel compound 3-Glycidoxypropyl- functionalized silica.The adsorption experiments were applied for a range of pH (2-13), temperature, adsorbent dosage, initial concentration, and contact time. The results revealed that the percentage removal of Cr(VI) decreased with the increase of Cr(VI) concentration, pH and temperature, while the percentage removal increase with increase contact time and adsorbent dose.The removal efficiency for Cr(VI) adsorption was more than 75% after 24 hour this achieved at pH around 6, and temperature 25ºC, using 0.04g weight of dose, at initial concentration 10 ppm for 10 mL Cr(VI) solution.The adsorption of Cr(VI) onto MSiTh was optimized under acidic conditions (pH< 7) at room temperature. According to pseudo second order the Cr(VI) sorption, the results achieved shows the MSiTh is able to remove Cr(VI)within 20 min with high removal efficiency.
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Эту запись предоставил Université Ibn Zohr Agadir
