Preparation and Characterization of Alumina and Silica Modified Chitosan

Abstract

In this present work, the modified chitosan composite is prepared by using Alumina and Silica. The prepared composites are characterized by SEM, EDAX, XRD and FTIR techniques. The physiochemical characteristics such as Carbon Yield (%), Moisture content, pH, Acidity and Basicity, Zero point charge, Boehm's titration, Iodine number are also carried out. The yield and iodine number of chitosan modified silica 91.6% and 2743.555mg/g is higher than the chitosan modified alumina 85.2% and 2121.457mg/g. The prepared composites are used as remarkable adsorbents in the treatment of wastewater due to its biodegradable and non-toxic nature.

Synthesis and Characterization of Chitosansilica Hybrid Adsorbent From the Extraction of Timor-East Nusa Tenggara Island Silica and Its Application to Adsorption of Copper(ii) Ion

“…The precipitation was dried in room temperature and cleaned using aquadest 5 times. Finally, it was filtered and dried in an oven at 105 o C for 5 hours 23,24 .…”

“…Chitosan solution was made by diluting 2 g of chitosan in 100 mL of 3% acetic acid and constantly stirred using a magnetic stirrer for 1 h to form a homogeneous solution 24 . 1 g silica that had been prepared was mixed with chitosan solution and stirred to form a homogenous mixture for 12 h. The mixture was then neutralized with 50 mL of 1 M NaOH and diluted until a precipitation was formed.…”

“…The precipitation was reacted with 30 mL of 3% acetic acid and mixed with 50 mL of 1% sodium tripolyphosphate (b/v) then stirred using a magnetic stirring for 1 h. The result was filtered using a no. 1 Whatman filter paper and heated in an oven at 60 o C for 5 h. Finally, the mixture was cooled inside a desicator 24,25 .…”