A Study on Removal Characteristics of (Mn2+) from Aqueous Solution by CNT
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.
[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 http://www.who.int/water_sanitation_health/dwq/gdwq0506
[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
[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 http://www.who.int/water_sanitation_health/dwq/gdwq0506
[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
@article{"International Journal of Earth, Energy and Environmental Sciences:63873", author = "Nassereldeen A. Kabashi and Suleyman A. Muyibi. Mohammed E. Saeed. and Farhana I. Yahya", title = "A Study on Removal Characteristics of (Mn2+) from Aqueous Solution by CNT", abstract = "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, CNT, DOE, Manganese, Parameters.", volume = "3", number = "11", pages = "381-5", }