Removal of iron (ii) from aqueous solutions using prepared from waste-derived siliceous materials
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Date
2011-05
Authors
Mohd Luqman Hakim Bin Mohd Zain
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Abstract
Iron is one of the heavy metals that abundance in present environment. It differs from
other metals through its chemical behavior, bioavailability and toxicity. It can be toxic
pollutant which causing adverse affects severe environmental problem as well as to
human body and natural ecosystem. Thus, the treatment on Iron in waste water must be
properly conducted before discharge into water bodies. Commonly the technologies
used for the treatment are effective but high cost. Therefore, this study was carrying out
using sorption as a treatment method. The combination of rice husk ash (RHA), Palm
fuel ash (PFA) and coal fly ash (CFA) are used as sorbent in this study. The effect of
initial Iron concentration, pH, agitation time, agitation rate, sorbent dosage on removal
efficiency of Iron was investigated. pH 2 was found to be optimum conditions to
remove Fe2+ from solutions. The agitation time was found to be 40 minutes. At 60
mg/l, the removal efficiency was the highest while 0.9 g of sorbent affected the highest
removal efficiency. Besides that, physical and chemical analyses have been done to
study the physical and chemical characteristic respectively. X-ray diffraction (XRD)
was used to determine the crystal structure that present in the selective sorbent while
Scanning electron microscope was done to identify sorbent surface morphologies.
Thus, from the study, this treatment method is able to remove Iron from aqueous
solutions using waste-derived materials.