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Title
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Biosorption of Mg(II) from water by Rhizopus arrhizus
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Sub-Title |
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Subject |
Biosorption; Rhizopus arrhizus; Kinetic and equilibrium modeling
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Sub-Subject |
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Author |
Ammara Waheed
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Publish Year |
2018 |
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Supervisor |
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Diss#. |
doi: 10.5004/dwt.2018.21873 |
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Pages |
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Text Language |
English |
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Accession |
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Library Section |
Research Article |
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Abstract |
The current research was performed on dead and immobilized Rhizopus arrhizus (D.I.R.a.), in order
to remove Mg(II) from water; this includes the effects of pH, contact time, initial dye concentration,
temperature, and co-ions. It was observed that the optimum pH for the process was 6.5. The extent of
removal was enhanced with an increase in contact time and initial concentration. The uptake of Mg(II)
onto D.I.R.a. grew rapidly, from 0.705 to 7.13 mg/g, when the initial concentration was raised from 2
to 100 mg/L. Kinetic and equilibrium studies revealed that equilibrium was achieved within 60 min.
Sorption isotherm studies showed that Freundlich isotherm model is applicable, and the values of R2,
Kf, and n were 0.987, 0.74, and 1.62, respectively. The experiments on co-ions revealed that the presence
of Cu(II) ions inhibits the uptake of Mg(II) by D.I.R.a.
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