Comparison of the biosorption of copper(II) aqueous solution by the Spirogyra and Cladophora filamentous macroalga
碩士 === 崑山科技大學 === 環境工程研究所 === 97 === Copper is an important pollutant in the wastewater of metal treatment and semi-conductor industries. Several treatment technologies have been proposed to remove copper from wastewater, such as chemical precipitation, electrode deposition, reverse osmosis, adsorp...
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| Format: | Others |
| Language: | zh-TW |
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2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/9bk88r |
| Summary: | 碩士 === 崑山科技大學 === 環境工程研究所 === 97 === Copper is an important pollutant in the wastewater of metal treatment and semi-conductor industries. Several treatment technologies have been proposed to remove copper from wastewater, such as chemical precipitation, electrode deposition, reverse osmosis, adsorption, etc. Among these remedy methods, adsorption is a relatively inexpensive alternative for copper removel. The aim of this research is to develop a low cost adsorbent for wastewater treatment.
This study evaluated the biosorption capacity of green alga Spirogyra and Cladophora species for Cu(Ⅱ) from aqueous solutions. The biosorption capacities were examined by Langmuir and Freundlich isotherms and the results indicated that the biomass is a suitable material for the development of high capacity biosorbent for Cu(Ⅱ) removal.
Powdered biomass of Spirogyra species can rapidly sorbent the target metals. It is observed that the biosorption capacity of the biomass strongly depends on pH and algal dose. The maximum biosorption capacity of 117.65 mg Cu(Ⅱ)/g as dry weight of biomass was observed at an optimum pH of 5.0 in 120 min with an algal dose of 0.1 g/L and 150 mg/L metal concentration in the solution.
The potential of commonly available green algae belonging to Cladophora species investigated isotherms of Cu(Ⅱ) biosorption. It is observed that the biosorption capacity of the biomass strongly depends on pH and algal dose. The maximum biosorption capacity of 188.7 mg Cu(Ⅱ)/g as dry weight of biomass was observed at an optimum pH of 5.0 in 60 min with an algal dose of 0.5 g/L and 150 mg/L metal concentration in the solution. The sorption of both algae was very well described by the Langmuir isotherm.
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