Biosorption of Nickel by Brown Algae Laminaria Japonica Immobilized in Calcium Alginate

摘要：

In this study, the brown algae Laminaria Japonica immobilized in calcium alginate was used as a biosorbent for nickel (Ⅱ) removal from aqueous solutions. The biosorption of nickel ions on the immobilized Laminaria Japonica beads adapted to the aqueous solution of a large pH (4-7) and temperature range. The maximum uptake capacity for nickel ions of the immobilized algae beads is 39.43 mg/g. The experimental results fitted satisfactory to the Langmuir and Freundlich isotherm models explaining that the sorption of nickel on the sorbents is physical and chemical sorption. The results of the kinetic studies show that the sorption of nickel ions on this algae adsorbent follows pseudo second-order kinetics suggesting the determined step of the biosorption is chemisorption process.

关键词： biosorbent sodium alginate glutin nickel Laminaria Japonica

作者: XU Zhizhen FAN Wenhong FENG Lijuan

作者单位: Department of Environmental Science and Engineering, Beihang University, Beijing 100083, China

会议类型: 国际会议

会议名称: 2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-11-13（万方平台首次上网日期，不代表论文的发表时间）