Mohammad Reza Massoudinejad, Akbar Eslami, Hamed Mohammadi, Hossein Najafi, Behzad Rezayi Fard, Gholam Hossein Joshani,
Volume 5, Issue 2 (13 2012)
MicrosoftInternetExplorer4
Background and Objectives: The
increasing demand for drinking water has led scientists to the use of saline waters,
but existing desalinating processes are very expensive. carbon aerogel is a
type of organic aerogel that is suitable for desalination owing to its
unique porous structure. Low
potential of fouling and deposits, very low wastewater
production, electrostatic regeneration of aerogels and, in turn, no need
to acid consumption, and lower power consumption are some of this
technology benefits.
Materials and Method: In
this experimental- analytical study, the purpose was survey of saline
and brackish water desalination using carbon aerogel technology and
its comparison with electrolysis.The
community
studied was synthetic salt
water
samples, using of TDS and
EC indicators. The minimum synthetic samples were 243. In this regard, after polymerization of
Resorsinol and Formaldehyde compounds under ambient pressure conditions
and then its pyrolysis, we fabricated plates of carbon aerogel.
Result: With
manufacturing in the pilot-scale, the effect of different parameters, including
input salt concentration, current, water flow, distance of
between electrodes and pH, on NaCl sorption amount of carbon aerogel
electrodes were studied. Generally,
adsorption amount increased with increasing of current and NaCl
concentration and decreased with increasing of distance electrodes, flow and
pH.
Results: Fabricating
reactor at
pilot-scale, we studied the effect of different parameters, including
input salt concentration, current, water flow, intra-distance
of electrodes, and pH on the NaCl sorption using carbon aerogel electrodes. Generally, adsorption capacity increased
with increasing of current and NaCl concentration in the inlet flow,
and it decreased with increasing intra-distance of electrodes, flow, and pH.
Conclusion: Under the most optimal conditions, our results showed that the NaCl
adsorption rate on carbon aerogel electrodes was about 1.43×10
-4 M
NaCl per g of carbon aerogels indicating its cost-effectiveness.
