Trichoderma Species Biosorption Of Nickel And Cadmium From Aqueous Solutions
The effect of ph on growth of trichoderma sp. In shake flask culture was studied. The highest biomass was obtained at ph 5 which is 1.45g in 100 ml of liquid media. In this research, the biosorbent was characterized by fourier transform infrared spectroscopy (ftir) and scanning electron microscop...
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| Format: | Thesis |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | http://eprints.usm.my/62915/ http://eprints.usm.my/62915/1/18-Pages%20from%20PHS18020663.pdf |
| Summary: | The effect of ph on growth of trichoderma sp. In shake flask culture was
studied. The highest biomass was obtained at ph 5 which is 1.45g in 100 ml of liquid
media. In this research, the biosorbent was characterized by fourier transform
infrared spectroscopy (ftir) and scanning electron microscope (sem), energy
dispersive x-ray spectroscopy (edx) and ph point of zero charge (phpzc). The
optimum biosorption conditions were determined as a function of ph, biosorbent
dosage, and contact time. The equilibrium data were better fit by the langmuir
isotherm model than by the freundlich isotherm. The maximum adsorption capacity
of nickel and cadmium were found to be 5.456 mg/g and 2.380 mg/g respectively. The
central composite design (ccd) in response surface methodology was used for
designing the experiments as well as for full response surface estimation. The
optimum condition for maximum removal of nickel and cadmium from an aqueous
solution of 50 mg/l were as follows: ph 4.92, biosorbent dosage (0.70 g), contact
time (8.28 hours) for nickel and ph 9.99, biosorbent dosage (0.60 g), contact time
(11.93 hours) for cadmium. The high correlation coefficient (/?2 = 0.877 for nickel, r2
= 0.959 for cadmium) between the models and experiment data showed that the
models were able to predict the removal of nickel and cadmium from aqueous solution
by using trichoderma sp. Efficiently. |
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