Study on the ph effect of metal solution and biosorbent concentration on cooper (Cu) removal by Saccharomyces.cerevisie from simulated waste water
The production of heavy metals has increased rapidly since the industrial revolution. Heavy metals usually form compounds that can be toxic even in very low concentrations. The conventional methods of removing metals from wastewaters such as chemical precipitation, chemical oxidation or reduction, i...
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| Main Author: | |
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| Format: | Undergraduates Project Papers |
| Language: | English |
| Published: |
2008
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/627/1/Suhaiza_Kassim.pdf http://umpir.ump.edu.my/id/eprint/627/ |
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| Summary: | The production of heavy metals has increased rapidly since the industrial revolution. Heavy metals usually form compounds that can be toxic even in very low concentrations. The conventional methods of removing metals from wastewaters such as chemical precipitation, chemical oxidation or reduction, ion exchange, filtration, electrochemical treatment, membrane technologies and solvent extraction are generally expensive and have many limitations. It is also generate huge quantity of toxic chemical sludge. The search for new technologies has directed attention to biosorption. Bioadsorption is a process that utilizes inexpensive biomass to sequester toxic heavy metals and is particularly useful for the removal of contaminants from industrial effluents. Algae, bacteria and fungi and yeasts have proved to be potential metal biosorbents. The biosorption of copper ions from simulated wastewater using baker’s yeast biomass will be investigated. The major purpose of this research is to study the effect of pH and biomass concentration on copper uptake by Saccharomyces cerevisiae from simulated waste water. The level of copper (II) accumulation depends on the pH and initial biomass concentration. Optimum pH values for maximum copper (II) accumulation were determined in range of 3.0-8.0, while effects of concentration on biosorption were in the range 5.0-20.0 mg/ml of the biomass. As the result, there was an increase in biosorption capacity with increasing of pH. pH value of 8.0 shows the highest percent of metal accumulated which is almost 70%. For biomass concentration parameter, the analysis for 10 mg/ml of biomass concentration gives the optimum uptake of heavy metal with 60% removal from the simulated wastewater. |
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