科研之友
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摘要
In the current research work, the ability of a Fe-modified clinoptilolite for Cu2+ adsorption from aqueous solution was investigated. Mineral characteristics were examined by optical microscope, X-ray diffraction, SEM, and chemical analysis using XRF spectroscopy. Results showed that clinoptilolite, quartz, and gypsum are the main minerals and natural clinoptilolite contained high amounts of SiO2 (61.0%) and Al2O3 (9.3%) in the representative sample. The effects of important parameters including chemical conditioning, initial metal concentration, initial pH, and environmental temperature on Cu2+ adsorption were investigated. The results showed that the Cu2+ adsorption mechanism was strongly dependent on metal concentration and pH. In addition, adsorption data have been interpreted in terms of Langmuir and Freundlich equations. Basing on observation, Fe-modified clinoptilolite has a particularly high potential for Cu2+ removal.
- 出版日期2016-12
