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A Study on Removal Characteristics of (Mn2+) from Aqueous Solution by CNT

Authors: Nassereldeen A. Kabashi, Suleyman A. Muyibi. Mohammed E. Saeed., Farhana I. Yahya


It is important to remove manganese from water because of its effects on human and the environment. Human activities are one of the biggest contributors for excessive manganese concentration in the environment. The proposed method to remove manganese in aqueous solution by using adsorption as in carbon nanotubes (CNT) at different parameters: The parameters are CNT dosage, pH, agitation speed and contact time. Different pHs are pH 6.0, pH 6.5, pH 7.0, pH 7.5 and pH 8.0, CNT dosages are 5mg, 6.25mg, 7.5mg, 8.75mg or 10mg, contact time are 10 min, 32.5 min, 55 min, 87.5 min and 120 min while the agitation speeds are 100rpm, 150rpm, 200rpm, 250rpm and 300rpm. The parameters chosen for experiments are based on experimental design done by using Central Composite Design, Design Expert 6.0 with 4 parameters, 5 levels and 2 replications. Based on the results, condition set at pH 7.0, agitation speed of 300 rpm, 7.5mg and contact time 55 minutes gives the highest removal with 75.5%. From ANOVA analysis in Design Expert 6.0, the residual concentration will be very much affected by pH and CNT dosage. Initial manganese concentration is 1.2mg/L while the lowest residual concentration achieved is 0.294mg/L, which almost satisfy DOE Malaysia Standard B requirement. Therefore, further experiments must be done to remove manganese from model water to the required standard (0.2 mg/L) with the initial concentration set to 0.294 mg/L.

Keywords: Adsorption, parameters, manganese, DOE, CNT

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[1] Pongrácz, E. (2004). "Waste minimization - resources use optimization". Finland: University of Oulu,.2004.
[2] WHO: Guidelines for Drinking-water Quality 2006. (2008, Jan 17) Available
[3] Jane, E and Thomas Callaghan "Impacts of mine drainage on aquatic life, water uses and man-made structures". Ins. Brady, K., Smith, M. & Scheuck, J. (edit.) Coal Mine Drainage Prediction and Pollution Prevention in Pennsylvania: 3-1 - 3-11. Pennsylvania: The Pennsylvania Department of Environment Protection. 1998.
[4] Deanen, M. et al, The wondrous world of carbon nanotubes: a review of current carbon nanotube technologies. Eindhoven University of Technology, 2003
[5] Meyyappan, M. & Srivastava, D, Carbon nanotube: A revolution in nanotechnology. IEEE Potentials, vol 19, no 3, pp. 16-18, 2000.
[6] Ahmad bin Jusoh et al, "Study on the removal of iron and manganese in groundwater by granular activated carbon". Desalination, vol 182, pp. 347 - 353. Elsevier Science Publisher.
[7] Box, G., Hunter, W., Hunter, J., Statistics for Experiments. Wiley, New York, 1958
[8] Augustine, A.A., Orike, B.D., & Edidiong, A.D, Adsorption Kinetics and modeling of Cu (II) ions sorption from aqueous solution by mercaptoacetic acid modified cassava wastes. Electronic Journal of Environmental, Agricultural and Food Chemistry,vol 6, no 4 pp. 2221- 2233, 2007