7
2BV. Mn which has an initial concentration of 0.55 mg/L
starts with concentration 0.79 mg/L at the 2BV and desorbs
until it reaches a concentration of 0.362 mg/L. The higher
desorption of Ca and Mg only shows there were a commi-
nution of the material and that the access to the respective
ions was made easier.
2) Experiment B: Activated Coke
In this experiment we notice that about 75% of the total
BV, the Ca concentration exceeds its initial concentration
of 128.9 mg/L before it lowers back to around 95 mg/L. A
similar situation happens with Mg resulting in a rise of its
curve. The initial concentration of 25.9 mg/L is reached at
around 75% of the total BV after it desorbs from a higher
concentration of 32.41 mg/L. This shows a sorption of Ca
and Mg right from the sorption phase of the experiment.
There is also adsorption of Mn as it starts at a concentra-
tion of 0.012 mg/L and rises sharply until it exceeds the
initial concentration of 0.61 mg/L. Although a correla-
tion of these elements and the zinc sorption could not be
observed, it can be inferred that these adsorptions impacted
slightly the adsorption capacity of the material due to the
ion exchanges between the Ca, Mg and the Zn. This mate-
rial therefore has the affinity to adsorb the elements Ca, Mg
and Mn.
3) Experiment C: Charred Fermentation Residue
From this graph it can be observed that whose initial con-
centration in the initiating solution being 152 mg/L starts
very high and rises steadily before reaching back to the ini-
tial concentration and lowers back to 127.9 mg/L. Mg on
the other hand also adsorbs very little at the sorption phase
of the experiment but rises through reaching back to its
initial concentration of 26.2 mg/L before rising further and
above it. The curves of the Zn, Mg and Ca are very similar
in this regard and all show adsorption. The material seems
to sorb Mn at the initial phase but very little and through-
out the experiment it begins to desorb from the initial con-
centration until the concentration reduces. This affinity to
adsorb Mg and Ca as well as Zn in higher concentrations
without seemingly affecting the running time of the mate-
rial only confirms it’s a very good material.
Figure 9. Breakthrough curve of Exeperiment C
Figure 10. Breakthrough curve of zinc and other elements
Figure 11. Breakthrough curve of zinc and other elements:
Activated coke
2BV. Mn which has an initial concentration of 0.55 mg/L
starts with concentration 0.79 mg/L at the 2BV and desorbs
until it reaches a concentration of 0.362 mg/L. The higher
desorption of Ca and Mg only shows there were a commi-
nution of the material and that the access to the respective
ions was made easier.
2) Experiment B: Activated Coke
In this experiment we notice that about 75% of the total
BV, the Ca concentration exceeds its initial concentration
of 128.9 mg/L before it lowers back to around 95 mg/L. A
similar situation happens with Mg resulting in a rise of its
curve. The initial concentration of 25.9 mg/L is reached at
around 75% of the total BV after it desorbs from a higher
concentration of 32.41 mg/L. This shows a sorption of Ca
and Mg right from the sorption phase of the experiment.
There is also adsorption of Mn as it starts at a concentra-
tion of 0.012 mg/L and rises sharply until it exceeds the
initial concentration of 0.61 mg/L. Although a correla-
tion of these elements and the zinc sorption could not be
observed, it can be inferred that these adsorptions impacted
slightly the adsorption capacity of the material due to the
ion exchanges between the Ca, Mg and the Zn. This mate-
rial therefore has the affinity to adsorb the elements Ca, Mg
and Mn.
3) Experiment C: Charred Fermentation Residue
From this graph it can be observed that whose initial con-
centration in the initiating solution being 152 mg/L starts
very high and rises steadily before reaching back to the ini-
tial concentration and lowers back to 127.9 mg/L. Mg on
the other hand also adsorbs very little at the sorption phase
of the experiment but rises through reaching back to its
initial concentration of 26.2 mg/L before rising further and
above it. The curves of the Zn, Mg and Ca are very similar
in this regard and all show adsorption. The material seems
to sorb Mn at the initial phase but very little and through-
out the experiment it begins to desorb from the initial con-
centration until the concentration reduces. This affinity to
adsorb Mg and Ca as well as Zn in higher concentrations
without seemingly affecting the running time of the mate-
rial only confirms it’s a very good material.
Figure 9. Breakthrough curve of Exeperiment C
Figure 10. Breakthrough curve of zinc and other elements
Figure 11. Breakthrough curve of zinc and other elements:
Activated coke