期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 6, 页码 1776-1780出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.10.035
关键词
Biosorption; Nickel; Barley straw; Crab shells; Adsorption isotherm
资金
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation
- Saskatchewan Innovation Science Fund
- University of Saskatchewan
- Saskatchewan Environmental Industry Management Association
Wastewater containing nickel sulphate generated from a nickel plating industry is of great concern. In the present work, biosorption of nickel by barley straw from nickel sulphate solution was investigated. Nickel uptake at room temperature (23 +/- 0.5 degrees C) was very sensitive to solution pH, showing a better uptake value at a pH of 4.85 +/- 0.10 among the tested values. The nickel biosorption isotherm fitted well the Langmuir equation. When the ionic strength (IS) of the solution was increased from less than 0.02-0.6 M, nickel uptake was reduced to 12% of that obtained at IS of less than 0.02 M. Barley straw showed a higher nickel uptake (0.61 mmol/g) than acid washed crab shells (0.04 mmol/g), demonstrating its potential as an adsorbent for removal of nickel. (C) 2009 Elsevier Ltd. All rights reserved.
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