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International Journal of Marine Science 2013, Vol.3, No.27, 212-218
http://ijms.sophiapublisher.com
214
Figure 1 Population (×1 000 ind/L) of
Porphyridium cruentum
(S.F.Gray) Nägeli
on the treatment of Pb, Cd, Cr, and Cu, on
concentration 1, 3, and 5 mg/L
on the concentration of 3 and 5 mg/L had lowered
P.
cruentum
populations (Figure 1). The concentrations
of heavy metals in the sea water before treatments
were 0.17 mg/L Pb, 0.01 mg/L Cd, 0.15 mg/L Cu, and
0.03 mg/L Cr. Therefore, the initial concentration of
heavy metals was the concentration of treatments
added with the sea water concentration.
On the preliminary research, the population growth
of
P. cruentum
on the 0.5 mg/L concentration of Pb,
Cd, Cu, and Cr were fluctuated, the peak population
growth were on the day of 4, 10, and 13
(Soeprobowati and Hariyati, 2012). The life cycle
of
Porphyrydium
tent to go a day forward in the
higher heavy metal concentrations, but with the
lower population.
Generally, the culture media of
P. cruentum
with Pb,
Cd, Cu, and Cr 1 mg/L had the highest reduction of
heavy metals than on the concentrations of 3 and 5
mg/L, respectively. For
P. cruentum,
the percentage of
heavy metals concentration reduction was highest on
Cu treatment (92% in the day of 15, Figure 2). On the
0.5 mg/L of Pb, Cd, Cu, and Cr treatments,
P.
cruentum
culture had shown the highest reduction
of Cu and Cd concentrations of 96% and 70%,
respectively (Soeprobowati and Hariyati, 2012). On
the higher treatment concentrations of this research,
the concentration of 3 and 5 mg/L had reduced
population growth, and
P. cruentum
shown the
highest reduction of Cu concentration compare with
others, therefore
P. cruentum
was good to remediate
Cu pollution.