Microwave assisted modification of cellulose by gallic acid and its application for removal of aluminium from real samples.
Microwave assisted preparation of cellulose modified with gallic acid (MA-Cell-GA) was developed for high efficient adsorption of Al3+. The as-prepared modified cellulose has been characterized by elemental analysis, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and zeta potential measurements. Energy dispersive X-ray (EDX) spectrum was utilized to proof the adsorption of Al3+. The effect of various experimental factors, as pH, amount of adsorbent, shaking time, initial metal ion concentration, temperature, concomitant ions and desorption conditions on the extraction efficiency was investigated and optimized in batch mode experiments. The adsorption capacity and the surface area of MA-Cell-GA were 59.6mgg-1and 160m2g-1, respectively which were significantly higher than those of the sorbent obtained via traditional reflux procedure. The thermodynamic factors (ΔH° and ΔG°) values for adsorption of Al3+on MW-Cell-GA confirmed the non-spontaneousity and exothermic character of the adsorption process. It was indicated that the prepared adsorbent can be regenerated easily using EDTA. The procedure was successfully applied for the preconcentration of Al3+in water, rocks, blood and soil samples prior to the determination using inductively coupled plasma optical emission spectrometry (ICP-OES).
Urology and Nephrology Center, Mansoura University, Mansoura 35516, Egypt. Electronic address: w.mortada@yahoo.com.
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Mortada
Chemistry Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt.
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Kenawy
Chemistry Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt.
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Abou El-Reash
Chemistry Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt.
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Mousa
D000327:Adsorption; D000535:Aluminum / Q000737:chemistry / Q000302:isolation & purification*; D002482:Cellulose / Q000737:chemistry*; D004777:Environment; D005707:Gallic Acid / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008872:Microwaves; D012987:Soil / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
D012987:Soil; D014867:Water; D005707:Gallic Acid; D002482:Cellulose; D000535:Aluminum
Aluminium; Gallic acid; Modified cellulose nanoparticles