کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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588548 | 878580 | 2011 | 6 صفحه PDF | دانلود رایگان |

In this paper, functional macromolecule poly (methacrylic acid) (PMAA) was grafted onto the surface of silica gel particles using 3-methacryloxypropyl trimethoxysilane (MPS) as intermedia, and the grafted particle PMAA/SiO2 with strong adsorption ability for Cd2+ was prepared. The adsorption properties of Cd2+ on the PMAA/SiO2 were investigated with both batch and column methods. The experimental results showed that the PMAA/SiO2 possesses very strong adsorption ability for Cd2+, and the saturated adsorption amount could reach up to 42.6 mg g−1. The equilibrium adsorption data were found to be consistent with the Langmuir isotherm model. pH and temperature have great influence on the adsorption amount. PMAA/SiO2 can be easily regenerated using diluted hydrochloric acid solution as eluent. The PMAA/SiO2 possesses excellent reusability properties as well.
Research highlights▶ The PMAA/SiO2 possesses very strong adsorption ability for Cd2+. ▶ The PMAA/SiO2 possesses very strong adsorption ability for Cd2+. ▶ The equilibrium adsorption data are consistent with the Langmuir isotherm model. ▶ PMAA/SiO2 can be easily regenerated.
Journal: Process Safety and Environmental Protection - Volume 89, Issue 2, March 2011, Pages 127–132