Removal of heavy metal ions from aqueous solutions by bamboo wastes

in English journal, 英文期刊
標題Removal of heavy metal ions from aqueous solutions by bamboo wastes
AuthorsFu-Lan Hsu, 許富蘭, Yu-Chen Peng 彭于珍, & Hong-Lin Lee 李鴻麟
出版日期2009 / 9

In the present study, the ability of wastes of 5 local bamboo species (Dendrocalamus latiflorus, Phyllostachys makinoi, P. pubescens, Bambusa stenostachya, and B. dolichoclada) to remove heavy metal ions of Cu (II), Pb (II), Cd (II) and Ni (II) from aqueous solutions, with different reaction times, particle sizes, and pH values were evaluated and compared with 4 known biosorbents of activated carbon, bark, exhausted coffee, and exhausted tea by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The results showed that the absorptive capacity of bamboo waste for heavy metal ions increased with prolongation of the reaction times and a decrease in the particle size. The optimum pH value for metal adsorption was in the range of 4~6. Phyllostachys
pubescens was the most effective in removing heavy metal ions from aqueous solutions among the wastes of the 5 bamboo species. By hot-water-extraction treatment, the available volume and surface area of the raw bamboo materials greatly increased which effectively improved the metalremoval efficiency. The performance of hot-water-extracted bamboo for removing heavy metal ions was even better than those of bark, exhausted coffee, and exhausted tea. Therefore, the use of hot-water-extracted bamboo waste as an adsorbent may be an alternative to other more-costly materials.

期刊名稱Taiwan Journal of Forest Science
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