Abstract
This paper described the adsorption characteristics of heavy metal-cadmium from aqueous solution onto activated carbon and recycle materials. The adsorbent materials selected in our study were activated carbon, sawdust, and peanut shell. The effects of adsorption time, particle size of adsorbent, adsorbent mass and initial adsorbate concentration were investigated using batch adsorption experiments. The adsorption isotherms were obtained using concentrations of the cadmium ion ranging from 5 to 40 mg/L. Our results demonstrate that the removal rate of cadmium for each material initially increased rapidly with the increase of adsorption time and the optimal removal efficiencies were reached within 3 h; with the increase of the adsorbent particle size, the removal rate of cadmium for both sawdust and peanut shell decreased whereas for activated carbon almost all cadmium were removed; The removal rate increased when the amount of sawdust and peanut shell increased from 0.2 g to 1 g, the amount of activated carbon increased from 0.05 g to 0.4 g; the removal rate decreased with the increase of initial cadmium concentration.
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Liu, X., Xu, X., Dong, X., Park, J. (2019). Adsorption of Cadmium from Aqueous Solutions onto Activated Carbon and Recycle Materials. In: Zhan, L., Chen, Y., Bouazza, A. (eds) Proceedings of the 8th International Congress on Environmental Geotechnics Volume 1. ICEG 2018. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-2221-1_25
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DOI: https://doi.org/10.1007/978-981-13-2221-1_25
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