| Autor: |
Xi Liu1,2, Hongyi Ao1, Jinguang Xiao3, Xiong Xiong1,2, Jiantong Liu1 jtliu@ihb.ac.cn |
| Předmět: |
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| Zdroj: |
Fresenius Environmental Bulletin. 2011, Vol. 20 Issue 11a, p3059-3067. 9p. |
| Abstrakt: |
The potential application of bamboo shoot shell (BSS), which is a naturally available waste biomass, in the removal of malachite green (MG) from aqueous solutions was evaluated in this work. Batch adsorption studies were performed to investigate the effects of adsorbent dosage, adsorbent particle size, contact time, initial MG concentration and temperature on adsorption process. The results showed that the MG adsorption capacity of BSS increased with increasing initial MG concentration and temperature. In contrary, it decreased with the increases of BSS dosage and particle size. The adsorption kinetics of MG was best described by the pseudo-second-order rate model. Intrapartide diffusion was not the only rate-controlling factor. The Freundlich isotherm was adequate to explain the adsorption equilibrium. Thermodynamics parameters such as free energy change, enthalpy change and entropy change were analyzed and it was found that the adsorption of MG by BSS was spontaneous and endothermic in nature. Based on these results, BSS could be a promising adsorbent for the treatment of MG contaminated water. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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