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| 標題: | Removal of copper, nickel, lead, and zinc using chitosan-coated montmorillonite beads in single- and multi-metal system |
| 作者: | Tsai, Wan-Chi
Ibarra-Buscano, Sonia
Kan, Chi-Chuan
Futalan, Cybelle Morales
Dalida, Maria Lourdes P.
Wan, Meng-Wei |
| 貢獻者: | Kaohsiung Med Univ, Dept Med Lab Sci & Biotechnol
Univ Philippines Diliman, Dept Chem Engn
Chia Nan Univ Pharm & Sci, Inst Hot Spring Ind
Frontier Oil Corp, Operat Dept
Chia Nan Univ Pharm & Sci, Dept Environm Engn & Sci |
| 關鍵字: | Ionic strength
Multi-metal system
Chitosan
Groundwater
Hydrated ionic radius
water |
| 日期: | 2016-05 |
| 上傳時間: | 2018-01-18 11:39:59 (UTC+8) |
| 出版者: | Taylor & Francis Inc |
| 摘要: | In this study, the removal of Cu(II), Ni(II), Pb(II), and Zn(II) from aqueous solution in single and multi-metal system using chitosan-coated montmorillonite (ChiMC) beads was investigated. The non-crosslinked and crosslinked ChiMC beads were characterized using SEM-EDX, Fourier transform infrared, and Brunauer, Emmett, and Teller analysis. The effect of ionic strength and pH on the adsorption capacity and percent (%) removal of ChiMC was examined. Kinetic studies revealed that adsorption using ChiMC follows the pseudo-second-order equation with high correlation coefficient values (R-2>0.95). The equilibrium data were correlated with Langmuir and Freundlich isotherm models, where crosslinked ChiMC provided higher maximum adsorption capacity over ChiMC. The calculated Langmuir adsorption capacities for Cu(II), Ni(II), Pb(II), and Zn(II) using ChiMC in single-metal system are 13.04, 12.18, 29.85, and 13.50mg/g, respectively. An increase in the calculated adsorption capacities derived from Langmuir isotherm was observed in multi-metal system, indicating a synergistic effect. The adsorption capacity in single- and multi-metal system followed the order: Pb(II)>Cu(II)>Zn(II)>Ni(II). The kinetic rate and adsorption capacity of the four metals were observed to increase in multi-metal systems. The removal of Cu(II), Ni(II), Pb(II), and Zn(II) from groundwater by adsorption onto ChiMC was also investigated. |
| 關聯: | Desalination and Water Treatment, v.57 n.21, pp.9799-9812 |
| 顯示於類別: | [環境工程與科學系(所)] 期刊論文
[觀光事業管理系(含溫泉所)] 期刊論文
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